E PIC NI X9751035-A by mikeholy

VIEWS: 8 PAGES: 32

									SENSORS & SYSTEMS
Authority in Displacement Measurement




         PRINCIPL E

            CAPA
           NCDT



                   Non-Contact
                   Capacitive
                   Displacement
                   Measurement
                                 Contents
1.      Safety ............................................................................... 5
1.1     Symbols Used ......................................................................................... 5
1.2     Warnings ................................................................................................. 5
1.3     Notes on CE Identification ...................................................................... 6
1.4     Proper Use .............................................................................................. 7
1.5     Proper Environment ................................................................................ 7
2.      Functional Principle, Options, Technical Data ............. 8
2.1     Measuring Principle ................................................................................. 8
2.2     Model Designation .................................................................................. 9
2.3     Structure ................................................................................................ 10
2.3.1   Signal Conditioning Electronics ............................................................ 11
2.3.2   Sensors ................................................................................................. 12
2.3.3   Sensor Cable ........................................................................................ 13
2.4     Technical Data ....................................................................................... 14
3.      Delivery .......................................................................... 15
3.1     Unpacking ............................................................................................. 15
3.2     Storage ................................................................................................. 15
4.      Installation and Assembly ............................................ 16
4.1     Precautionary Measures ........................................................................ 16
4.2     Sensor ................................................................................................... 16
4.3     Electronics, Ground Connection, Earthing ........................................... 18
4.4     Power Supply and the Display/Output Device ...................................... 18
5.      Operation ....................................................................... 19
5.1     Starting Up ............................................................................................ 19
5.2     Basic Settings ....................................................................................... 20
5.3     Calibration with Metal Targets ............................................................... 20
5.4     Linearity Adjustment and Calibration with Insulator Targets .................. 21
5.5     Measuring ............................................................................................. 23
6.      Operation and Maintenance ........................................ 24
7.      Warranty ........................................................................ 25
8.      Appendix ....................................................................... 26
8.1     Accessories and Spare Parts ................................................................ 26
8.2     Sensor Dimensions ............................................................................... 26
8.3     Sensor Cable Dimensions ..................................................................... 28
8.4     Electronic Housing Dimensions ............................................................ 29
8.5     PIN-Assignment ..................................................................................... 30
8.6     System Characteristics .......................................................................... 31
                                                                                                                           MICRO-EPSILON
                                                                                                                           MESSTECHNIK
                                                                                                                             GmbH & Co. KG
                                                                                                                            Koenigbacher Str. 15

                                                                                                                        D-94496 Ortenburg / Germany

                                                                                                                             Tel. +49/85 42/1 68-0
                                                                                                                            Fax +49/85 42/1 68-90
                                                                                                                        e-mail: info@micro-epsilon.de
                                                                                                                        http://www.micro-epsilon.com

X9751004-B020101MSC
X9751004-B020101MSC
Safety



1.    Safety
Knowledge of the operating instructions is a prerequisite for equipment operation.

1.1 Symbols Used

The following symbols are used in this instruction manual:


                   DANGER!             - imminent danger




                   WARNING!            - potentially dangerous situation




         i         IMPORTANT!          - useful tips and information




1.2 Warnings

• Disconnect the power supply before touching the sensor surface
      ð     Static discharge - danger of injury
      ð     Danger of injury

• The power supply and the display/output device must be connected in
 accordance with the safety regulations for electrical equipment
      ð     Danger of injury
      ð     Damage to or destruction of the sensor and/or electronics

• Avoid banging and knocking the sensor and electronics
      ð     Damage to or destruction of the sensor and/or electronics

• The power supply may not exceed the specified limits
      ð     Damage to or destruction of the sensor and/or electronics
      ð     Danger of injury

• Protect the sensor cable against damage
      ð      Destruction of the sensor
      ð      Failure of the measuring device




X9751004-B020101MSC                                                                  5
                                                                               Safety



    1.3 Notes on CE Identification

    The following applies to the capaNCDT series 62x:

                              EC regulation 89/336/EEC
                              EC regulation 73/23/EEC (DT 621 only)

    Products which carry the CE mark satisfy the requirements of the EC regulation
    EC 89/336/EEC ‘Electromagnetic Compatibility’ and the European standards
    (EN) listed therein.
    The EC declaration of conformity is kept available according to EC regulation,
    article 10 by the authorities responsible at

                            MICRO-EPSILON MESSTECHNIK
                                  GmbH & Co. KG
                               Koenigbacher Straße 15

                                    D-94496 Ortenburg
                                        Germany

    The system is designed for use in industry and satisfy the requirements of the
    standards

          • EN 50 081-1       RFI emission
          • EN 50 082-2       Immunity to interference

    The systems satisfy the requirements if they comply with the regulations
    described in the instruction manual for installation and operation.


    The system has been tested according to the following EMC standards:


    EN 55 011

    Emission of electromagnetic fields            Group1 / Class B
    RFI emission over mains cable                 Group1 / Class B


    EN 50 082-2

    ESD (air and contact discharge)              EN 61000-4-2         Criterion B
    Transient disturbance variables (burst)      EN 61000-4-4         Criterion A
    Magnetic fields                              EN 61000-4-8         Criterion A
    Mains-borne disturbance                      ENV 50141            Criterion A
    Radiated interference                        ENV 50140            Criterion B




6                                                                X9751004-B020101MSC
Safety



1.4 Proper Use

The capaNCDT series 62x measuring system is designed for use in industrial areas.

It is used for
        - displacement, distance, thickness and movement measurement
        - position measuring of parts or machine components

The systems may only be operated within the limits specified in the technical data
(see chap. 2.4).

The system should only be used in such a way that in case of malfunction or failure
personnel or machinery are not endanged.

Additional precautions for safety and damage prevention must be taken for
safety-related applications.



1.5 Proper Environment

• Protection class for electronics:      IP 40

• Protection class for sensor:           IP 54

• Operating temperature
             electronics:                +10 to +50 °C (+50 to +122 °F)
             sensor:                     -50 to +200 °C (-58 to +392 °F)
                                         (exception S 600-1 max. +150 °C / +302°F)
              sensor cable:              -50 to +150 °C (-58 to +302 °F)

• Storage temperature:                   -10 to +75 °C (+14 to 167 °F)

• Humidity:                              5 - 95% (non condensing)

• Ambient pressure:                      atmospheric pressure

• The space gap between the sensor face and the target must have an un-varying
  dielectric constant

• The space gap between the sensor face and the target may not be contaminated
  (e.g. water, rubbed-off parts, dust, etc.)

• Vibration                              According to IEC 68-2-6

• Mechanical shock                       According to IEC 68-2-27

• EMC:                           Acc. to EN 50 081-1 RFI emission
                                         EN 50 082-2 Immunity to interference




X9751004-B020101MSC                                                                   7
                                                            Functional Principle, Options, Technical Data



                                2.         Functional Principle, Options, Technical Data
                                2.1 Measuring Principle

                                The principle of capacitive distance measurement with the capaNCDT system is
                                based on the parallel plate capacitor.

                                If a constant AC current Ic flows through the sensor capacitor, the amplitude of
                                the AC voltage Uc at the sensor is proportional to the distance d between the
                                capacitor electrodes.
                                       Uc   1
                                Xc =      =
                                       Ic   wC                     Ic d
                                                           Uc =               >> Uc ~ d
                                             A                    weoer A
                                C = e oe r
                                             d




                                 Uc


                                                              ground
                                                              Masse
                                                              screening electrode (guardring)
                                                              Schirmelektrode
                                                              measuring electrode
                                                              Meßelektrode
                                       d
                                                              target: electrical conductor
                                                                 Meßobjekt: elektrischer Leiter



                                Fig. 2.1: Functional principle of the guardring capacitor

                                The two plate electrodes are formed by the sensor and the target opposite. The
                                measured AC voltage is compared with a compensating voltage, rectified,
                                amplified and output as an analog voltage.
      i         IMPORTANT!
                                The sensor design with guard ring electrodes guarantees that the necessary
    A small target and bent     homogenous electrical field is realized for all practical purposes.
    (uneven) surfaces cause a
    nonlinear characteristic.   The linear characteristic of the measuring signal is achieved without extra
                                electronic linearization when measuring against targets made of electrically
                                conductive materials (metals). Small changes in the conductivity or magnetic
                                properties do not affect the sensitivity or linearity.

                                The capaNCDT system also measures reliably against insulating materials. The
                                linear behaviour for this category of targets is achieved by special electronic
                                circuitry. A constant relative dielectric of the material is, however, a prerequisite
                                for accurate measurement.




8                                                                                                 X9751004-B020101MSC
Functional Principle, Options, Technical Data



2.2 Model Designation

Signal conditioning electronics:


             DT62

Series 620                     0     ±15 VDC supply
                               1     230 VAC supply (110 VAC optional)


Sensors:


             S6       -

Series 600                     Measuring range in mm

                               Sensor housing
0 Metalls and insulators       0 Cylindrical
1 Insulators                   1 Cylindrical (precision design)
                               2 Special design (only on request)


Sensor cable:


             C 60     -

Series 600                     Cable length in m
                               Standard 1 m (optional max. 5 m)
Connectors
1    for sensors S 601-0,05 to S 610-0,7
2    for sensors S 600-1 to S 600-10
2/90 single-sided 90° angled connector for sensors S 600-1 to S 600-10




X9751004-B020101MSC                                                      9
                                Functional Principle, Options, Technical Data



     2.3 Structure

     The non-contact, single-channel measuring system of the capaNCDT series 62x
     installed in a compact aluminium housing, consists of:
            • signal conditioning electronics
              (oscillator, demodulator with integral preamplifier)
            • capacitive sensor and
            • sensor cable.




     Fig. 2.2: Complete measuring system capaNCDT 620

     Two versions with different supply voltages are available:

       • DT 620
         - Single-channel compact electronics for ±15 VDC/±50 mA external supply
         - 0 to 10 VDC output

       • DT 621
         - Single-channel compact electronics with integral power supply unit
           (230 VAC / 16 VA), mains cable and on/off-switch.
           (110 VAC optional)
         - 0 to 10 VDC output




10                                                                X9751004-B020101MSC
Functional Principle, Options, Technical Data



2.3.1 Signal Conditioning Electronics

The electronics consists of an oscillator and a demodulator board with integral
preamplifier. These modules have Europe size. The model DT 621 has an integral
power supply unit on the oscillator board.

Both cards are plug mounted in an aluminium housing. Connection is made via
a small mother board.

Ground socket                  Demodulator       Slide switch
                                                 (Selecting the target)
    8-pin socket
    Supply and signal output




 Sensor plug           Mother board          Oscillator


Fig. 2.3: Arrangement of components of the capaNCDT 62x measuring system


Oscillator / Power supply

The oscillator supplies the sensor with a frequency and amplitude-stable
sinusoidal voltage. The frequency is 20 kHz. With the DT 621 the transformer is in
the front area of the oscillator module.

The fuse (0.16 A, medium time-lag) is under a protection cap and only
accessible after removing the front panel and unplugging the oscillator card.




X9751004-B020101MSC                                                                  11
                                 Functional Principle, Options, Technical Data



     Demodulator Module

     Demodulation, linearization and amplification of the distance-dependent
     measuring signal are the tasks of the demodulator module. The three trimmers
     (see fig. 2.4)
                         • Linearity
                         • Gain
                         • Zero
     are used for setting linearity, gain and zero point of the complete measuring
     channel (see chap. 5.2).

     The two-position slide switch (see fig. 2.3) is set for conductive targets or non-
     conductive targets.

                         Slide switch    Target
                         position 1      conductive
                         position 2      non-conductive




             Linearity    Gain       Zero




     Fig. 2.4: Front view of capaNCDT 62x

     Only the zero potentiometer is active in position 1. In this case the demodulator
     output voltage is set from 0 to +10 Volts over the whole measuring range.


     2.3.2 Sensors

     In order to obtain accurate measuring results, the surface of the sensor must be
     kept clean and free from damage.

     The sensor face can be reground if the surface is scratched. To guarantee the
     system specification, class N2 surface roughness for measuring ranges up to 1
     mm and N5 for measuring ranges above 2 mm must be observed according to
     DIN ISO 1302.

     The following limits must be observed for grinding:

     Measuring range up to 1 mm - .5 mm max. (up to .039 in - .019 in max.)
     Measuring range above 2 mm - 1 mm max. (up to .078 in - .039 in max.)

     The capacitive measuring process is area-related. A minimum area (see table) is
     required depending on the sensor model and measuring range. In the case of
     insulators the dielectric constant and the target thickness also play an important
     role.


12                                                                  X9751004-B020101MSC
Functional Principle, Options, Technical Data



Sensors for metallic targets

  S en so r          Measuring       Min. diameter C omments
  model                range         of the target
                   mm      inches    mm     inches
  S   601-0,05     0.05    0.002      3      0.12    maxi mum resoluti on
  S   600-0,2       0.2    0.008      5      0.20    parti c. temperature-stable
  S   601-0,2       0.2    0.008      5      0.20    vacuum-ti ght
  S   601-0,5       0.5    0.019      7      0.28    8 mm standard holder
  S   600-1          1     0.039      9      0.35    low-cost model
  S   601-1          1     0.039      9      0.35    hi ghly stable
  S   600-2          2     0.078     17      0.67    uni versal sensor
  S   600-3          3     0.118     27      1.06    uni versal sensor
  S   600-5          5     0.197     37      1.46    uni versal sensor
  S   600-10        10     0.393     57      2.24    uni versal sensor



Sensors for insulator targets


  S en so r           Measuring       Min. diameter Comments
  model                 range         of the target
                    mm      inches     mm     inches
  S    600-0,2       0.4     0.016      5      0.20
  S    601-0,2       0.4     0.016      5      0.20     Calibration and
  S    610-0,7       0.7     0.028      8      0.31     measurement performance
  S    600-1          2      0.078     12      0.47     (zero point, sensitivity and
  S    601-1          2      0.078     12      0.47     linearity) depend on the
  S    600-2          4      0.156     24      0.94     insulating material,
  S    600-3          6      0.236     36      1.42     geometry and installation
  S    600-5         10      0.393     48      1.89     conditions
  S    600-10        20      0.786     72      2.83




                                                                                                   WARNING!
2.3.3 Sensor Cable

The sensor and electronics are connected by a special, double screened,                Switch off the device when
1 m (3 ft) long sensor cable.                                                          plugging and removing
                                                                                       connectors.
Type             Can be used for
                                                                                       The sensor cable may not be
C601-1           sensors S 601-0,02 / S 600-0,2 I S601-0,2 I S601-0,5 / S 610-0,7      crushed.
C602-1           sensors S 600-1 to S 600-10 with two straight connectors
C602/90-1        sensors S 600-1 to S 600-10 with one straight connector and           The minimum bending radius
                 one right-angle connector                                             is 10 mm (0.39 inch).

The user may not shorten or lengthen these special cables. A damaged cable             No modifications may be
can not usually be repaired.                                                           made to the sensor cable.




X9751004-B020101MSC                                                                                                 13
                                                                                                        Functional Principle, Options, Technical Data



                                                       2.4 Technical Data




                                                             S 601-0,05
                                S en so r




                                                                             S 601-0,2


                                                                                         S 600-0,2


                                                                                                      S 601-0,5


                                                                                                                      S 610-0,7




                                                                                                                                                                                                S 600-10
                                                                                                                                       S 600-1


                                                                                                                                                 S 601-1


                                                                                                                                                               S 600-2


                                                                                                                                                                           S 600-3


                                                                                                                                                                                      S 600-5
     Specification

                                  el. cond.           mm         .05            .2         .2          .5                               1           1            2           3         5         10
                                                                                                                      --
                                    (metal)          inch       .002          .008       .008        .019                             .039        .039          0.78       .117      .195       .39
     Measuring range
                                insulator 1            »
                                                   mm ( )
                                                                    --
                                                                                .4         .4          1               .7               2           2             4          6         10       20
                                                       »
                                                  inch ( )                    .015       .015        .039            .027             .078        .078          .156       .234       .39       .78

                                  el. cond.           mm          3             5          5           7                                9           9            17        27         37         57
                                                                                                                      --
     Min. diameter                  (metal)          inch       .117          .195       .195        .273                             .351        .351          .663      1.053      1.443      2.22
     of target                                        mm                        7          7           10              8               12          12            24        36         48        72
                                insulator 1                         --
                                                     inch                     .273       .273         .39            .312             .468        .468          .936       1.4       1.87       2.8

     Sensitivity
                                                  V/mm          200            50         50           20           » 10               10          10            5         3.33       2          1
                                                  V/inch       5080           1270       1270         508          » 254              254         254           127       83.58      50.8       25.4

     Non-Linearity
                            ± .2 % FSO 1           ± µm             .1           .4         .4           1            1.4              2             2            4          6        10        20
      a
     ( t 20 °C)

                            stat. (...30 Hz)
                                                      µm        .002          .008       .008         .02             .03              .04         .04           .08       .12        .20       .40
                           ≤ .004 % FSO
     Resolution 2
                            dyn. (...6 kHz)
                                                      µm          .01           .04        .04        .10             .14              .20         .20           .40       .60          1        2
                           ≤ .02 % FSO

     Band width                                                                                                       static ... 4 kHz (-0.1 dB), ... 6 kHz (-3 dB)

                                      Zero ± µm/°C                .03           .06        .03        .06             .17              .17         .06           .17       .17        .17       .17
     Temp. stab.
     sensor                     Sensitivity -ppm/°C                 3            11          3         30             30               30           11           30         30        30        30

     Weight                                             g           2             2       2.5         12              3.5              7.1         7.1           61         95       120        230

     Temp. stab. electronics                                                                                            ≤ ±0.01 % FSO / °C

     Long term stability                                                                                                0.02 % FSO / month

                                                 Sensor                                                                            max. 150 °C
                                                                          -50 to +200 °C (-60 to +400 °F)                           (300 °F)
                                                                                                                                                           -50 to +200 °C (-60 to +400 °F)
     Temp.
     range                              Sensor cable                                                              -50 to +150 °C (-60 to +300 °F)

                                               Electronic                                                         +10 to +50 °C (+50 to +125 °F)

     Air humidity                                                                                                   5 to 95 % (non condensing)

     Storage temperature                                                                                           -10 to +75 °C (+15 to 165 °F)

                                            Series 620                                                            ±15 VDC (max. ±5 %) / ±50 mA
     Power
     supply                                 Series 621                                   230 VAC / 16 VA / fuse 0.16 A slow blow (110 VAC optional)

     Output                                      Voltage                                             0 to 10 VDC (max. 10 mA short circuit proof)

     Impedance                                                                                                                     ≤ 10 Ω

                                                                                                         EN50081-1 RFI emission
     Electromagnetic compatibility (EMC)
                                                                                EN 50082-2 Immunity to interference - uncertainty of measurement max. 2.6 %


 1) The measuring range for insulators is approximate and depends on the relative dielectric constant of the insulator.
 2) The range of the static resolution is up to 30 Hz (Lowpass filter on the input of the data aquisition electronics). The
    range of the dynamic resolution is up to 6 kHz.

 The data specified apply for electrically conductive material (metal) as reference target. Data may vary for insulators.

 FSO = Full Scale Output                                                      1 µm = 1 micron                                     ppm = part per million

14                                                                                                                                                                       X9751004-B020101MSC
Delivery



3.       Delivery
3.1 Unpacking

Remove the parts of the system carefully from the packaging and transport them
in such a way that they are not damaged. Check for completeness and shipping
damage immediately after unpacking. The delivery includes:

     1   Signal conditioning electronics
     1   Sensor
     1   Sensor cable with plug
     1   Power and output cable PC3/8 (available as an accessory)
     1   Plug (if PC3/8 was not ordered)
     1   Instruction manual

In case of damage or missing parts, please contact the manufacturer or supplier.

3.2 Storage

Storage temperature:        -10 to +75 °C (+14 to 165 °F)
Humidity:                   5 - 95 % (non condensing)




X9751004-B020101MSC                                                                15
                                                                                   Installation and Assembly



                                4.    Installation and Assembly
                                4.1 Precautionary Measures

                                No sharp-edged or heavy objects may come into contact with the sensor cable
     i       IMPORTANT!         sheath.

 A damaged cable cannot be      In pressurised areas the cable must be protected against pressure loads.
 repaired.
                                The minimum bending radius is 10 mm (.39 inch). Kinks must be avoided at all
                                cost.

                                The connections must be checked for a tight fit.


                                4.2 Sensor

                                The sensors of the capaNCDT series 62x may be mounted free-standing or flush.
                                Choose the sensor position such that the sensor and the target do not touch.

                                When assembling, make sure that the polished sensor surface is not scratched.

                                Radial point clamping with grub screw

                                This simple type of fixture is only recommended for a force and vibration-free
                                installation position.

                                The grub screw must be made of plastic so that it cannot damage or deform the
                                sensor housing.

     i       IMPORTANT!


 Do not use metal grub screws                          Madenschraube
                                                       grub screw
 ð Danger of damaging the
   sensor




                                Fig 4.1: Radial point clamping with grub screw.




16                                                                                           X9751004-B020101MSC
Installation and Assembly



Circumferential clamping

This type of sensor mounting offers maximum reliability because the sensor is
clamped around its cylindrical housing.

It is absolutely necessary in difficult installation environments, e.g. on machines,
production plants etc.



                               Mounting with
                               clamping ring




Fig. 4.2: Circumferential clamping


Connecting the sensor to the electronics

The sensor is connected to the signal conditioning electronics by the sensor
cable. The connection is made by simple plugging. The connector locks                    i         IMPORTANT!
automatically.
                                                                                       Switch off the system when
The tightness of fit can be checked by pulling the connector housing (cable            plugging or releasing the
bushing).                                                                              cable connections.

The lock can be released and the connector opened by pulling the knurled               Pulling on the cable must be
housing sleeve of the cable bushing.                                                   avoided. Use strain relief.




X9751004-B020101MSC                                                                                                 17
                                                                                       Installation and Assembly



                                    4.3 Electronics, Ground Connection, Earthing

                                    The sensor housings are connected to signal ground and supply ground.


       i          IMPORTANT!        Mounting the sensor in a metal holder establishes a sufficient ground
                                    connection.

     The signal ground of the       If the target is small and isolated from earth it is advantageous for the measuring
     measuring system must be       process to connect the target to the electronic. Using the ground socket shown
     connected to the protective    in fig. 2.3.
     earth conductor of the mains
     connection.

                                    4.4 Power Supply and the Display/Output Device

                                    The power supply (DT 620) and signal output (capaNCDT 62x) are connected by
                                    the 8-pin built-in connector (DlN 45326).

                                    See the drawing and table for the pin assignment. The standard signal
                                    conditioning electronics contains an 8-pin cable socket for the user-side
                                    assembly of your own connecting cable.

                                       PIN         Assignment

                                       1           0 Volt (24 V operation)                                  6         7
                                       2           +15 Volt                                                      8
                                                                                                       1                  3
                                       3           output A displacement signal/voItage
                                       4           -15 Volt                                            4                  5
                                       5           0 Volt (±15 V operation)                                      2
                                       6           +24 Volt (24 V operation)
                                       7           0 Volt (analog output)                                  solder pin side
                                       8           Output B signal option (e.g. current)                   cable socket



                                    The pins 2, 4 and 5 are not required for the DT 621 with internal power supply.

                                    In addition the following should be noted when assembling the user-side
       i          IMPORTANT!        connecting cable:

                                           - A double screened cable must be used!
     Requirements of power and
     output cables to satisfy the          - Outer screening mesh surrounds all cable wires
     EMC regulations.
                                           - Inner screening mesh surrounds signal wires PIN 3, 7, 8

                                           - Inner screening mesh at pin 7

                                           - Total screen via connector housing to housing ground

                                           - Recommended conductor cross-section 0.14 mm2 (AWG 26)

                                    The EMC regulations (see chap. 1.3) are only satisfied if these basic conditions
                                    have been observed.



18                                                                                                X9751004-B020101MSC
Operation



PC3/8 is a 3 m (10 ft) long, pre-assembled 8-wire power and output cable. It is
supplied as an accessory.

Pin assignment and colour codes

PIN Cable colour       Assignment

 2    brown            +15 Volt      standard
                                                                 outer cable area
 4    yellow           - 15 Volt     ±15 VDC
                                     supply                      with total screen
 5    grey                0 Volt

 3    green            output signal (distance) / voltage
                                                            inner cable
 7    blue             0 Volt
                                                            3-wire with
 8    red              output signal options                screen
                       e.g. current 4 - 20 mA

      black            outer screen
      bare             inner screen (connect with pin 7, blue)


The DT 621 (with integral power supply unit) is connected to the mains electricity
supply with the mains cable. The pins 2, 4 and 5 of the 8-pin socket (power
supply/signal output) are not wired.




5.    Operation
5.1 Starting Up

The display/output devices must be connected through the signal output socket
(see chap. 4.4) before connecting the device to the power supply and switching
the power supply on.

Please check the following points before you start working with the system:            i         IMPORTANT!

- Has the right target material been selected?
                                                                                     Allow the measuring system
                                                                                     to warm up for about
- Are the cable connections tight?
                                                                                     one minute before the first
                                                                                     measurement or calibration.




X9751004-B020101MSC                                                                                                19
                                                                                                                Operation



                                      5.2 Basic Settings

                                      The linearity, gain and zero point of each measuring channel are adjusted with
                                      the ’linearity’, ’gain’ and ’zero’ trimmer potentiometers (see fig. 2.4). The setting
                                      range is approx. 20 turns per potentiometer. The end settings at the left and right
                                      stops are recognizable by a slight click.

                                      The following assignment applies for a standardized setting value:

                                      Tr i m m e r p o s i t i o n   A d ju s t m e n t

                                      l e f t s to p                 m a x i m um

                                      middle                         m e d i um

                                      r i g h t s to p               m i ni m um




                                      5.3 Calibration with Metal Targets

                                      Preconditions:
                                           - Specific resistance of the target < 100 Wcm.
                                           - Slide switch on the demodulator in position 1
     connector,
     32-pin




                  1          2        For metallic targets the demodulator´s linearization function is switched off since
                  Slide switch        a linear characteristic is already available automatically on account of the
                                      measuring principle and sensor construction. The ’gain’ and ’linearity’
                                      potentiometers on the demodulator module are disabled.
      Target material selection for
      metals.
                                      The measuring device is set to a sensitivity of 10 Volts corresponding to the
                                      measuring range of each sensor model.

                                      The electrical zero point can be set across the whole measuring range with the
                                      ’zero’ potentiometer of the demodulator module. The start of the measuring
                                      range (= mechanical zero point) is on the front face of the sensor.
           i          IMPORTANT!
                                      If the sensor (or target) is at a tilt, a reduction in the measuring range and a shift
                                      in the zero point occur corresponding to the tilt.
      No linearization necessary
                                      Curved target surfaces lead to a reduction in linearity especially when the
                                      distances are small. Linearity and sensitivity deviations occur on smaller targets.




20                                                                                                     X9751004-B020101MSC
Operation

               Extension of the measuring range:

               The sensor measuring ranges can be extended considerably (by a factor of 2-3)
               with some loss in linearity and sensitivity. The maximum output voltage is about
               5 - 7 VDC.

               To do this, move the slide switch on the demodulator board to position 2. Make
               the necessary linearity adjustment as discribed in chapter 5.4.

               In step 1 here the following potentiometer setting is assumed:
                             • zero right stop
                             • gain left stop
                             • linearity right stop

               Carry out the complete calibration up to step 4.


               5.4 Linearity Adjustment and Calibration with Insulator
                   Targets

               Preconditions:




                                                                                       connector
                     - Specific resistance of the target > 106 Wcm.




                                                                                       32-pin
                     - Slide switch on the demodulator in position 2                               1         2
                                                                                                   Slide switch
               The measuring channel must be individually linearized and calibrated prior to
                                                                                      Target
               measurements against insulator targets. Adjustment takes place at defined material selection for
                                                                                      insulators.
               distances which are prescribed by a reference. A special micrometer calibration
               device with a non-rotating micrometer spindle (e.g. MC25 from MICRO-EPSILON)
               has proved to be particularly suitable. Spacer discs are not suitable.

               The following parameters influence the calibration:

               -   Resistivity of the target
               -   Dielectric constant of the target                                       i        IMPORTANT!
               -   Shape and thickness of the insulator
               -   With thin targets, metal behind the target may influence the propagation of the
                                                                                      Linearization necessary
                   field lines.

               If one of these parameter changes, recalibration is recommended. Later operating
               conditions should be simulated as accurately as possible for the calibration.

               Targets with very low er (= relative dielectric constant, e.g. PTFE) lead to low
               sensitivity.




X9751004-B020101MSC                                                                                               21
                                                                                                           Operation



                                  Step 1

                                  Settings: ’zero’ right stop, ’gain’ middle, ’linearity’ middle

                                  Record the measuring curve of the sensor (at least 10 points) and draw on graph
                                  paper.

                                    Signal

     i        IMPORTANT!                                            C
                                                                         C-B
 ’Zero’ potentiometer at right                        B
                                                                                  C-A
 stop. The measuring signal
                                                          B-A
 must not exceed 10 Volt for          A
 the chosen measuring range.
 Reduce sensitivity with ’gain’
 potentiometer if necessary.
                                                                             Distance d

                                  Choose a range of low and as constant as possible curvature from this curve and
                                  determine the points:

                                          • A Start of measuring range
                                          • B Centre of measuring range
                                          • C End of measuring range

                                  The output signal should not exceed 10 V in the chosen measuring range. If
                                  necessary, the sensitivity can be reduced with the ’gain’ potentiometer.

                                  Step 2: Linearity

                                  The measured value differences B-A and C-B are calculated from the fixed
                                  measuring points A B C and compared with each other.

                                  The setting of the ’linearity’ potentiometer is now altered until B-A and C-B are
                                  identical. If the value C exceeds 10 V the sensitivity (’gain’) must be reduced. If the
                                  ’linearity’ potentiometer is at the stop and B-A and C-B are still not equal, points
                                  A and C have probably been badly chosen. Start again with step 1.

                                  The ’linearity’ potentiometer is fixed and the position noted for documentation.

                                  Note: With the ’linearity’ potentiometer a quadratic component is fed to the
                                        measuring signal. This causes a particularly strong peaking of the signal
                                        for large distances and subsequent linearization of the physically
                                        induced nonlinear characteristic of insulators. No quadratic component is
                                        added at right stop for potentiometer setting.




22                                                                                                 X9751004-B020101MSC
Operation



Step 3: Sensitivity

In order to set a practicable sensitivity, first form the signal difference C-A and
select a sensitivity which matches the measuring range (e.g. 1 V/mm). Set the
distance point C and calculate the required measured value C'
                             E
      C'=C
                           (C - A)

C = signal value at distance point C
A = signal value at distance point A
E = desired signal span point A to C                                                        i         IMPORTANT!

If C' is not more than 10 V, set it with the ’gain’ potentiometer and then fix the
potentiometer. As a final check, run through the whole measuring curve and                The measuring signal must
document it.                                                                              not exceed 10 V otherwise
                                                                                          the sensor signal will be
Step 4: Zero                                                                              electronically limited,
                                                                                          causing a strong non-
The electrical zero point can now be shifted without affecting the linearity and          linearity.
sensitivity.

                  V
      1/1                                                   3
       Output signal




                                      2



                                     1/2
                       1
        0                        Measuring range (Distance) 1/1
        Sensor




                                     Target




                                                                  Fig. 5.1: Calibration
                                                                  steps




5.5 Measuring

With the capaNCDT either the deflection or the compensation method of
measurement can be applied.

Deflection method for fast events, tolerance monitoring and for insulators. Put
the zero point in the centre of the measuring range, the output signal is then in
proportion to the distance. Fast events are displayed on a suitable external
recorder (oscilloscope, recorder, transient recorder).

Compensation method for constant or slowly changing distances.
Compensation is carried out with the ’zero’ potentiometer until the output signal
is 0 Volt. You raise the resolution when reducing the noise. Sensitivity is not
affected by doing this.

X9751004-B020101MSC                                                                                                   23
                                                                                    Operation and Maintenance



                                   6.    Operation and Maintenance
                                   Please note the following for operation and maintenance:


       i         IMPORTANT!
                                   - Make sure that the sensor surface is always clean.

                                   - Switch off the power supply before cleaning.
     Disconnect the power supply
     before touching the sensor    - Clean with a damp cloth; then rub the sensor surface dry.
     surface.
      ð Static discharge           - Changing the target or very long operating times can lead to slight reductions
      ð Danger of injury             in the operating quality (long-term errors). These can be eliminated by
                                     recalibration (see chap. 5.3 and 5.4).

                                   In the event of a defect in the electronics, the sensor or the sensor cable, the
                                   parts concerned must be sent to

                                                                   MICRO-EPSILON
                                                                   MESSTECHNIK
                                                                     GmbH & Co. KG
                                                                    Koenigbacher Str. 15

                                                                D-94496 Ortenburg / Germany

                                                                     Tel. +49/85 42/1 68-0
                                                                    Fax +49/85 42/1 68-90
                                                                e-mail: info@micro-epsilon.de
                                                                http://www.micro-epsilon.com

                                   for repair or replacement.

                                   In the case of faults the cause of which is not clearly identifiable, the whole
                                   measuring system must be sent back for repair or replacement.

                                   The sensor can be reground if the surface is scratched. To guarantee the system
                                   specification class N2 surface roughness (acc. to DIN ISO 1302) for measuring
                                   ranges up to 1 mm and class N5 for measuring ranges from 2 mm should be
                                   maintained.

                                   There are limits for the grinding:

                                   Measuring range up to 1 mm - .5 mm max. (up to .039 in - .019 in max.)
                                   Measuring range from 2 mm: 0.5 mm max. (up to .078 in - .039 in max.)




24                                                                                                 X9751004-B020101MSC
Warranty



7.    Warranty
All components of the system have been checked and tested for perfect function
in the factory.

In the unlikely event that errors should occur despite our thorough quality control,
this should be reported immediately to MICRO-EPSILON.

The warranty period lasts 12 months following the day of shipment. Defective
parts, except wear parts, will be repaired or replaced free of charge within this
period if you return the device free of cost to MICRO-EPSILON.

This warranty does not apply to damage resulting from abuse of the equipment,
from forceful handling or installation of the devices or from repair or modifications
performed by third parties.

No other claims, except as warranteed, are accepted. The terms of the
purchasing contract apply in full.

MICRO-EPSILON will specifically not be responsible for eventual consequential
damage.

MICRO-EPSILON always strives to supply it's customers with the finest and most
advanced equipment. Development and refinement is therefore performed
continuously and the right to design changes without prior notice is accordingly
reserved.

For translations in other languages, the data and statements in the German
language operation manual are to be taken as authoritative.




X9751004-B020101MSC                                                                     25
                                                                                                                    Appendix



                8.          Appendix
                8.1 Accessories and Spare Parts

                MC 25                       Micrometer calibration fixture, range 0-25 mm / 0-1 inch,
                                            2 µm / 0.001 inch divisions , adjustable offset (zero), for all sensors

                MC 2,5                      Micrometer calibration fixture, range 0-2.5 mm / 0-0.1 inch,
                                            1 µm divisions for sensors S 601-0,05 thru to S 600-2

                MC 25D                      Digital micrometer calibration fixture,
                                            Range 0-25 mm / 0-1 inch, adjustable offset (zero), for all sensors

                PS100/230/15                Power supply for mounting in cabinets
                                            output ± 15 VDC / 500 mA,
                                            input 115 VAC / 230 VAC

                DD800                       Digital readout unit, programmable, for mounting in cabinets

                FC8                         8-pin cable socket DIN 45326

                PC3/8                       Power- and output cable, 3 m (10 ft) long, 8-wire

                Sensor cable (see chap. 2.3.3)

                Sensors (see chap. 2.3.2)


                8.2 Sensor Dimensions
                            (not to scale)




     Legend:
        mm
     (inches)
                                               (.12DIA.)




                                                                                                               (.23DIA.)
                                                                                   (.23DIA.)
                (.23DIA.)




                                                           (.23DIA.)




                                                                                                      5 (.2)
                                                                                                               Ø 6e7




                                   5 (.2)
                                                           Ø 6e7
                                               Ø3




                                                                                   Ø6
                Ø6




                              12 (.46)                                                           12 (.46)



                                         S 601-0,05                                            S 601-0,2
                                             (.23DIA.)
                (.27DIA.)




                              8 (.31)
                                                                       (.31DIA.)




                                                                                                       40 (1.56)
                                             Ø 6f7




                                                                       Ø 8h7
                Ø7




                            12 (.46)

                                         S 600-0,2                                             S 601-0,5


26                                                                                                    X9751004-B020101MSC
Appendix




                                                                                                         21 (.82)




                                                                                                                           (.39DIA.)
                                              (.39DIA.)
(.39DIA.)




                   11 (.43)




                                                                                                                           Ø 10f7
                                              Ø 10f7
Ø 10




                                                                                                                                                                 = Connector side
                      20 (.78)


                                        S 601-1                                                                        S 600-1

                                                                                      Ø 20h7 (.78DIA.)



                                                                                                               S 600-2
                                            (.27DIA.)




                         12 (.46)
                                            Ø 7h7




                                                                                                              30 (1.17)


                                        S 610-0,7                                                                      S 600-2
                                                                                                                                                                       Fit tolerance
                                                                                                                                                          Dimension
                                                                                                                                                                             µm
                                                                                                                                                                              0
                                                                                                                                                             7 h7
                                                                                                                                                                            -15
                                                                                                                                                                            - 13
                                                                                                                                                              7 f7
Ø 20h7 (.78DIA.)




                                                           Ø 30 (1.17DIA.)




                                                                                                                                                                            - 28
                                                                                                                                                                              0
                                                                                                                                                             8 h7
                                                                                                                                                                            - 15
                                                                                                                                                                              0
                                                                                                                                                            20 h7
                                                                                                                                                                            - 21
S 600-3                                                                                                                                                                     - 10
                                 20 (.78)                                                                                                                     6 f7
                                                                                                                                                                            - 22
                                                                                                                                                                            - 20
                                                                                                                                                             6 e7
                                                                                                                                                                            - 32
                                                                             Ø 20h7 (.78DIA.)




                                                                                                                                       Ø 60 (2.34DIA.)




                                    30 (1.17)
                                                                                                                                                                            - 13
                                                                                                                                                             10 f7
                                                                                                                                                                            - 28

                                                                                                                                                         1 µm = 0.001 mm = 1 micron

                                                                                                         S 600-10
Ø 20h7 (.78DIA.)




                                                          Ø 40 (1.56DIA.)




                                                                                                           20 (.78)



                                                                                                               30 (1.17)


S 600-5
                              20 (.78)



                                      30 (1.17)

X9751004-B020101MSC                                                                                                                                                                    27
                                                                                                                    Appendix



                8.3 Sensor Cable Dimensions
                             (not to scale)

                                                                  Sensor
                                                                   cable
                              Sensor                              C602-1
                               cable
                              C601-1                                        Ø9
                                                                            (.35DIA.)

     Legend:
        mm
     (inches)
                25 (.98)




                                                      1000 (39)


                                                                       Ø3
                                                                       (.12DIA.)

                Ø3
                (.12DIA.)                                                   24.5 (.96)              Sensor
                14 (.55)




                                       Ø6
                                       (.24DIA.)                                                                    Sensor
                                                                                                                     cable
                                                                                                                   C602/90-1
                                     Sensor




                                                                        Sensor




                                                                   1 straight +
                                               2 straight
                           Model                                    1 angled                   suitable for sensors
                                              connectors
                                                                    connector

                                                                                         S 601-0,05 / S 601-0,2 / S 600-0,2
                           C 601-1
                                                  •                                            S 601-0,5 / S 610-0,7


                           C 602-1
                                                  •                                        S 600-1 / S 601-1 / S 600-2
                                                                                           S 600-3 / S 600-5 / S 600-10
                 C 602 / 90-1
                                                                        •




28                                                                                                       X9751004-B020101MSC
Appendix



8.4 Electronic Housing Dimensions
               (not to scale)



                                          14.5
                                          (.56)




                                                                                           Legend:
                                                                                              mm
130 (5.07)

              120 (4.68)




                                                                                           (inches)




                                                                               4.5 (.17)

                                                     165 (6.43)

                                                     188 (7.33)



Weight: 840 g




                              linearity    gain   zero
                                                                     2 (.08)




             12.5                                 12.5
             (.49)                                (.49)

                           8-pin socket
                                                  LEMO-connector
                            DIN 45326
                                                                  69 (2.69)




                                      input sensor
                                     output




X9751004-B020101MSC                                                                                   29
                                                                                               Appendix



                 8.5 PIN-Assignment

                                                  P in      Ro w " a "                       Ro w " c "

                                                   2             -                                   -

                                                   4             -                                   -

                                                   6             -                                   -

                                                   8             -                                   -

                                                  10                          +1 5 V

                                                  12                          Grou n d

                                                  14                          - 15 V

                                                  16             -                                   -

                                                  18                 O s c i l l a to r o u tp u t

                                                  20             -                                   -

                                                  22             -                                   -

                                                  24                          +1 5 V
        Tab. 8.1: OSPK 602, connector DIN
        41612, design C, 32-pin, 3-rows           26             -                                   -

                                                  28             -                                   -

                                                  30             -                                   -

                                                  32             -                                   -




                                                  P in      Ro w " a "                       Ro w " c "

                                                   2       U- o s c-V V                              -

                                                   4             -                                   -

                                                   6     U- s e n s o r-V V                          -

                                                   8             -                                   -

                                                  10                          +1 5 V

                                                  12                          Grou n d

                                                  14                          - 15 V

                                                  16             -                                   -

                                                  18                  O s c i l l a to r i n p u t

                                                  20             -                                   -

                                                  22             -                                   -

                                                  24                          +1 5 V

                                                  26             -                                   -

                                                  28             -                                   -
     Tab. 8.2: DLK 600/PA, connector DIN 41612,
     design C, 32-pin, 3-rows                     30             -                                   -

                                                  32         Si g n a l                 Si g n a l - g rou n d


30                                                                             X9751004-B020101MSC
Appendix



8.6 System Characteristics



        U [V]
7


6


5                    1 V/mm

4
                                                      Target: 8 mm pertinax
                                                      Lin 900
3                                                     Gain 550

2


1


0
    0       1        2      3     4    5     6        Distance
                                                      [mm]

Fig. 8.1: Standard measurment, sensor S 600-2




        U [V]

5


4

                                                      Target: metal
3               1 V/mm                                Lin 202
                                                      Gain 936
2                                                     Zero 0

1

          standard       enlargement
0
    0       1        2      3     4    5   distance
                                           [mm]


Fig. 8.2: Range enlargement, sensor S 600-2




X9751004-B020101MSC                                                           31
                                                                                          Appendix




             U [V]
     7


     6

                                                                      Target: 8 mm pertinax
     5                                                                Lin 1000
                 free-standing                                        Gain 500
     4           installation
                                         flush installation
     3


     2


     1


     0
         0       1      2        3         4       5          6     Distance
                                                                    [mm]

     Fig. 8.3: Influence of the sensor mounting, sensor S 600-2




             U [V]
     7


     6
                                                                      Target: 4 mm pertinax
                                                                      Lin 1000
     5
                         B = 18 mm                                    Gain 500

     4
                                     B = 8 mm

     3
                                                          S 600-2




     2
                                                                               A
                                     B
     1
                                                  grounded metal
     0
         0       1      2        3         4       5          6     Distance
                                                                    [mm]


     Fig. 8.4: Influence of the sensor surroundings, sensor S 600-2



32                                                                                 X9751004-B020101MSC

								
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