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Capacitive sensors for displacement_ distance and position

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					Capacitive sensors for displacement,
distance and position
                        Capacitive measurement
                        system and sensors with
                        micrometer resolution for
                        linear measurement of
                        displacement, distance
                        and position ideal for
                        insulators and
                        semiconductors
                        Non-contact capacitive sensors also known as
                        oszillation sensors, flatness sensor, position
                        sensor, dislocation sensor, displacement sensor,
                        distance sensor, heat resistant, stable, robust,
                        industry sensor, measurement system for layer
                        thickness, thickness measurement, gap,
                        compact measurement system for elongation,
                        also for customer-specific OEM sensors
   capaNCDT 6019
   Technical specifications


Measuring principle                                                     For machine integration
The operating principle of non-contact capacitive displace-             The non-contact capacitive displacement measuring system
ment measurement used by the capaNCDT system (capaci-                   capaNCDT 6019 is developed for machine and facility
tive Non-Contact Displacement Transducer) is based on the               integration. The compact design, the special performed
ideal parallel plate capacitor. The two plate electrodes are            technical data and the low cost prices make the system
formed by the sensor and the target opposite. If an AC                  ideally suited for OEM applications. The capacitive principle
current with constant amplitude flows through the sensor                allows to measure against any conductive target -
capacitor, the amplitude of the AC voltage on the sensor is             furthermore, it ensures very stable and very accurate
proportional to the distance between the capacitor electro-             measuring results. Typical applications can be found in
des; an adjustable compensating voltage is simultaneously               positioning, wear measurements, gap measurements,
generated in the amplifier electronics. After demodulation of           displacement, roundness and other.
both AC voltages the difference is amplified and output as an
analog signal.                                                           Instant sensor swap within 5 seconds!
                                                                         Replace any capaNCDT controller and any capaNCDT sensor
                                                                         within seconds without recalibration !
Electrical conductors as targets
The linear characteristic of the measurement signal is
achieved without extra electronic linearization when measu-
ring against targets made of electrically-conductive materials
(metals). Changes in the conductivity do not affect sensitivity
or linearity.                                                                                                            controller


Linearization and calibration
capaNCDT 6019 system is factory-calibrated for metallic                 Instant sensor swap without recalibration
targets (output 0-10 Volt). In critical sensor mounting                 The unique MICRO-EPSILON capacitive technology allows
conditions, the rated range of the output characteristic can            changing any capaNCDT sensor in seconds! Replacing
be adjusted and optimized, through the use of the zero and              sensors with different measuring ranges and any capaNCDT
gain potentiometers.                                                    controller without recalibration. A sensor swap with
                                                                        capaNCDT needs no more than 5 seconds, while other
Tri-Electrode technology with active guarding                           capacitive systems are not designed for replacing compo-
Due to the unique design of the MICRO-EPISLON Tri-                      nents without the need of individual calibration and lineariza-
Electrode sensor probes in conjunction with the active                  tion.
guarding technology the capaNCDT 6019 system enables
extreme signal stability and immunity.

 Active guarding for stable measuring results

                              MICRO-EPSILON capaNCDT sensor                       Common capacitive sensor
                                                                                                          measuring electrodes
                measuring electrode                  ground
                                                                                                           ground
                guard ring electrode                  homogeneous
                                                      measuring field                                        erratic
                         guard field                                                                         measuring
                                                                                                             field
Technical data



                   capaNCDT 6019: single channel system (SMD-model with integral sensor connecting cable)
                                            Model S601-0.2          S600-0.5       S600-1          CS2            CS3             CS5     CS10
Measuring range                                        0.2 mm        0.5 mm         1 mm          2 mm            3 mm            5 mm   10 mm
Resolution (static)                                                                           ? 0.01% FSO
Linearity                                                                                       ? 1% FSO
Frequency response                                                                            500 Hz (-3dB)
Active measuring area (diameter)                       2.3 mm        3.9 mm        5.5 mm        7.9 mm        9.8 mm        12.6 mm     17.8 mm
Guard ring width                                        1 mm         1.4 mm        1.5 mm         4 mm         8.1 mm        11.8 mm     18.1 mm
Sensor connecting cable                                                              120mm, triax angle connector
Storage temperature                                                                           -10°C to 70°C
Operation temperature                                                                         10 °C to 50 °C
Air humidity                                                                       5% to 95% r.H., non-condensing
Min. load resistance                                                                             2 kOhm
Output                                                                            0 to 10V (within measuring range)
Power supply                                                                                    ± 15V DC
Max. permissible power supply voltage                                                           ± 18V DC
Min. required power supply voltage                                                              ± 12V DC
Current consumption (±15V)                                                max. -7 mA / +10 mA (end of measuring range)
Voltage output                                                                              short circuit proof
Temperature stability                                                            ? 0.05% FSO / °C (+10°C to +50°C)
                                          Sensors         2g            4g            8g           48 g           65 g            95 g    180 g
Weigth
                                         Controller                                                 60g
Measuring target                                                                         any conductive target
FSO = Full scale output
Technical specifications are valid for electrical conductors (metal) as reference material at 20 °C (68 °F) ambient temperature
and for the standard length (0,12 m) of the sensor cable.




The high linearity is in the measuring principle                               Sensor installation
The capaNCDT system evaluates the reactance Xc of the                          All sensors can be installed free-standing or flush and are
capacitor which changes strictly in proportion to the                          secured by clamping or with a chuck.
distance:
Xc =
         1
       j wC
               capacitance C =       er e0         area
                                                 distance                          Clamping ring mounted                     Grub screw mounted
                                                                                                                                  (plastics)
Xc = constant distance




This theoretical relationship is put into practice by
constructing the sensors as guard ring capacitors.
capaNCDT 6019 Sensors and Controller - dimensions in mm (rounded inch), not to scale

                                        S 601-0.2                                                       S 600-0.5                                                                                  S 600-1                                                                                  Dimension            Fit tolerance (µm)
                                                                                                                                                                                                                                                                                              7 h7                                  0 -15
                                                                                                                                                                                                                                                                                               7 f7                    - 13 -28
                                                      Ø 6e7 (0.12)
Ø 6 (0.24)




                                                                                                                                                                                                                                                                                              8 h7                                  0 -15




                                                                                                                                                                                                                                              Ø 10f7 (0.39)
                                                                                                                                 Ø 8h7 (0.31)
                                          5 (0.20)                                                      12 (0.47)
                                                                                                                                                                                                           21 (0.83)                                                                          20 h7                                 0 -21
                                        12 (0.47)
                                                                                                                                                                                                                                                                                               6 f7                    - 10 -22
                                                                                                                                                                                                                                                                                              6 e7                     - 20 -32
                                                                                                                                                                                                                                                                                              10 f7                    - 13 -28

                                         CS2                                                              CS3                                                                                                                          CS5                                                                      CS10
                                                      Ø 20h7 (0.79)




                                                                           ø20h7 (0.78)




                                                                                                                                                 ø30h7 (1.17)




                                                                                                                                                                                                                                                                                                 ø20h7 (0.78)
                                                                                                                                                                                         ø20h7 (0.78)




                                                                                                                                                                                                                                                                 ø40h7 (1.56)




                                                                                                                                                                                                                                                                                                                                            ø60h7 (2.34)
                                  24 (0.94)
                                                                                                 16.5 (0.65)
                                                                                                                                                                                                                          16.5 (0.65)
                                                                                                         24 (0.94)
                                                                                                                                                                                                                                  24 (0.94)
                           = connector
                                                                                                                                                                                                                                                                                                                16.5 (0.65)
                                                                                                                                                                                                                                                                                                                    24 (0.94)


DT6019-B with angle connector for sensors S 600-1 - CS10                                                                                                                                DT6019-C with angle connector for sensors S 601-0.2 and 600-0.5
                                                                           ø9 (0.35)

                                                                                          ø2.2 (0.09)




                                                                                                                                                                                                                                                                                ø4 (0.16)




                                                 ø24.4 (0.96)
                                                                                                                                                                                                                                             16 (0.63)
                                                                                                                                                                                                                            8 (0.31)
                                                                                                                                                                                                            13.1 (0.67)
                                                                                                                                                                                             16.9 (0.67)




                                                                                                                                                                                                                                                         ø6 (0.24)
      30.6 (1.20)




                                                                                                                                                                                                                                                       ø5.4 (0.21)
                                                      ø10 (0.39)
                           10 (0.39)




                                                                                                                                                                                            17.5 (0.69)




                                                                      DT6019 Single-Channel-Controller                                                                                                                                                                                                             8.2 (0.32)
                                                                                                                                                                                                                                                                                                                        21 (0.83)
                                                                                                                                                                40 (1.57)
                                                                                                                                                                            24 (0.94)
                                                                                                                6.5 (0.26)

                                                                                                                             10 (0.39)




                                                                                                                                                                                                                                              4 mounting holes M3
                3 (0.12)




                                       1x45°


                                                                                                                                                                                                                                                                                                                   terminal block
                                                                                                                                                                            8 (0.31)




                                                                                                                                                                                                                                                               66 (2.60)                                          3.25 (0.13)
                                                                                                                                                                                                                                                              72.5 (2.85)




MICRO-EPSILON
info@micro-epsilon.com                                                info@micro-epsilon.co.uk                                                  info@micro-epsilon.us                                                                  certified DIN EN ISO 9001 : 2000
www.micro-epsilon.com                                                 www.micro-epsilon.co.uk                                                   www.micro-epsilon.us                                                                   modifications reserved / Y9761169-A010075MLO