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					3-2750 pH/ORP Sensor




                * Electrodes sold separately.



                                                               1 August, 2001
                                                2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
Description of Product(s)
3-2750 In-Line or Submersible pH/ORP Sensor

                  3-2750-3                      3-2750-1 or -2*
                Submersible                   In-Line Assembly
                 Assembly


Use with                                                      Use with +GF+
3-8050-1,2*                                                   SIGNET fittings
Universal                                                     0.5 to 4 in.
Mount Kit                                                     OR
OR                                                            1-1/4 in. adapters
3-8052-1,2*                                                   (P31515)
3/4” Integral                                                 CPVC-0C200
Mount Kit.                                                    PVC-0P200
                                                              PVDF-0V200


                         * Electrodes sold separately.
                                                                                 1 August, 2001
                                                                  2750/2754 Product Introduction
Description of Product(s)
3-2754 thru 3-2757 Combination Electrode

                pH                                               ORP

                                             PT-1000
                                      PT-1000

                                                mV

                                       GND




                                                pH




                                             10K ohm
                                      10K ohm

 3-2754 Flat         3-2756 Bulb                mV
                                                       3-2755 Flat      3-2757 Bulb
                                       GND
     -HF             (shown in B&W)                                       (shown in B&W)

 HF resistant         -DI
                 For < 100 uS                ORP
                                                                                1 August, 2001
                                                                 2750/2754 Product Introduction
Description of Product(s)
3-8050-1,2* and 3-8052-1,2*


     PCB with
     internal
     calibration
     switches

                              Dual Terminal
                              Blocks for easy
                              wiring
 Green LED for
 Visual Indication
 of calibration




                                             1 August, 2001
                              2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
Theory of Operation

           IMPEDANCE   POWER AND SIGNAL   uPROCESSOR       ANALOG OUTPUT/
            MATCHING      ISOLATION         CONTROL       POWER CONNECTION   BLACK - "+"
 mV IN
                                                                             5 VDC FOR S3L
               +
               -                                                             12-24 VDC FOR 4-20 mA

                                            uController
                                                                             RED -
                                                                             DATA OUT FOR S3L
                                                                             CALIBRATE FOR 4-20 mA
               +
 pt-1000       -                                                             WHITE - "-"
                                                                             SIGNAL GND FOR S3L
                                                                             Loop - FOR 4-20 mA

                                                                                   SHIELD
 1. Unit outputs 4-20mA when input power exceeds 12 VDC
 2. In Cal Mode unit has auto buffer recognition of pH 4, 7, 10 pH
     or 87, 264 mV’s ORP.
         2a. RESET TO FACTORY - Remove electrode; push and hold button for
         10 secs. LED steady ON, then OFF indicates reset (let go).
         2b. CAL - Push and hold button for 10 secs. LED steady ON, then OFF
         indicates proper calibration.
 3. Calibration error indicated by blinking LED, previous values kept.

                                                                                               1 August, 2001
                                                                                2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
    Features, Advantages and Benefits
    2750 Sensor Electronics

            CPVC Submersible                     PBT In-Line
               Assembly                           Assembly

Features:               Advantages:                       Benefits:
    3/4” NPT                Simple Process                     Saves install./
     (ISO coming)             Connection                          service time
    DryLoc™                 Waterproof/                        Forgiving
     Connection               Foulproof                           system vs. BNC
    Auto-Buffer             Simplifies                         Reduces training
     Recognition              calibration/use                    Saves OEM/
    4-20 mA or              Allows minimal                      Distributor $$’s
     S3L™ Digital             stocking to meet                    inventory red.
     signal for               applications -                      Common signal
     planned                  sets stage for                      for future meters
     products                 multi-parameter
                              meters
                                                                             1 August, 2001
                                                              2750/2754 Product Introduction
    Features, Advantages and Benefits
    275X Electrodes

Features:             Advantages:                             Benefits:
   DryLoc™              Waterproof/                                Secure
    Connection            Foulproof                                   connection
   In-Line or           One sensor                                 Simplifies
    Submersible           type                                        maintenance
   Double                for both                                   Provides long life
    Junction             Two barriers                                expectancy
   Long                  for reference                              Greater accuracy
    Reference            Accurate,                                   and stability
    Path                  reliable sensor                            User risk reduced
   Various               reference                                   with sensors
    Options              Can handle                                  available
                          many
                          process types     (Bulb electrode
                                            shown in B&W)
                                                                                 1 August, 2001
                                                                  2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
 Key Technical Specifications
 2750 Sensor Electronics
General                                                                Accuracy:              ± 32µA
Compatible Electrodes: +GF+ SIGNET 3-275x pH/ORP Electrodes            Resolution:            ± 5µA
Operational Range: pH:          0.00 to 14.00                          Update Rate:           0.5 s
                   ORP:         ± 2,000 mV                             Error indication:      3.6mA
                   Temp.        : 0° C to 85° C (32 to 185°F)          S3L output             Serial ASCII, TTL level 9600 bps
Response Time*: pH:             < 6 s for 95% of change                Accuracy:              pH:         ± 0.03 pH @ 25° C (77°F)
                   ORP:         application dependent                                         ORP:        ± 2mV @ 25° C (77°F)
                   Temp : 140 seconds (2754), 196 seconds (2756)      Resolution:            pH:          0.02 pH
                   * includes response time of electrodes                                     ORP:         1mV
Enclosure:         2750-1&2 (in-line):           NEMA 4X/IP65                                 Temp.:       0.2°C
                   2750-3 &4 (submersible): NEMA 6P/IP68 (with         Update Rate: 0.5 seconds
                   pipe extension and/or watertight conduit)           Error indication: Initiates “Check Sensor” command via S3L output
Materials:         2750-1&2 (in-line):           Valox® (PBT)          Input Impedance, Z:                >1011
                   2750-3&4 (submersible):       CPVC
Weight:            2750-1&2 (in-line):           0.75 kg (1.65 lbs.)   Environmental
                   2750-3&4 (submersible):       0.64 kg (1.41 lbs.)   Operating Temp.:     0° C to 85°C (32° to 185°F)
Immunity:          EN 50082-2                                          Storage Temp.:       -20° C to 85°C (-4° to 185°F)
Emissions:         EN 50081-1                                          Relative Humidity:   0 to 95%, non-condensing
Electrical                                                                                  (without electrode connected)
Cable:             4.5m (15 ft.), 3-conductor shielded 22AWG           Enclosure Rating:
Power:             12 to 24VDC for 4 to 20mA Loop                                           3-2750-1&2: NEMA 4X/IP65 with electrode
                   5VDC ± 5% regulated, 3mA max.                                            connected
Current output:    pH: Fixed 4 to 20mA, isolated, = 0.00 to 14.00 pH                        3-2750-3&-4: NEMA 6P/IP68 with electrode and
                   (custom scaling available)                                               watertight conduit and/or extension pipe connected
                   ORP: Fixed 4 to 20mA, isolated, = -1000 to
                   2000mV (custom scaling available from -2000 to      Standards and Approvals
                   2000mV)                                             • CE
Max Loop Resistance:            50 max. @ 12V                         • Manufactured under ISO 9001 and ISO 14001
                                325 max. @ 18V
                                600 max. @ 24V

                                                                                                                          1 August, 2001
                                                                                                           2750/2754 Product Introduction
Key Technical Specifications
2754 and 2756 pH Electrodes
Operating Range: 0 to 14 pH
                                                                       Primary Functions:
Temperature:
                                                                                  2754: Flat surface resists fouling
       2756:      0°C to 85°C (32° to 185°F)
                                                                                  2756: Bulb surface for general use
       2754:      10° to 85°C (50° to185°F)
                                                                                  2754-HF: Extended use in applications with trace
       2754-HF: 0° to 85°C (32° to 185°F)
                                                                                  hydrofluoric acid (<2%)
Storage Temperature: > -12° C (11° F)
                                                                                  2756-DI: Extended use in pure waters (< 100 µS)
Pressure:         6.89 bar @ 0°C (100 psi @ 32° to 149°F)
                                                                       Efficiency:            >97% @ 25°C (77° F)
                  4.00 bar @ 85°C (58 psi @ 150° to 185°F)
                                                                       pH Response Time: < 5 s for 95% of signal change (for flat
Pipe Size Range: 1/2 in. and up. Use +GF+SIGNET installation
                                                                                              and bulb style electrodes)
                  fittings from 0.5 to 4.0 in. (use pipe adapter in
                                                                       Weight: 0.25 kg (0.55 lb)
                  pipes over 4 in.) Vertical mounting ±60° required.
                  Submersion with 3-2750 sensor requires 3/4 in.
                  NPT or ISO 7-1/R 3/4 male threaded extension
                  pipe.
Temperature Sensor: PT-1000 (1096.8 = 25°C)
       Response Time,  =140 s (2754), 196 s (2756)
Wetted Materials: CPVC Body
                  Glass
                  FPM - Viton® O-rings
                  Porous UHMW Polyethylene reference junctions
Reference:        Electrolyte: Solidified Acrylamide Gel
                  3.5M KCI (2754, 2754-HF, 2756)
                  0.1 M KCl (2756-DI)
                  Element: Ag/AgCl




                                                                                                                        1 August, 2001
                                                                                                         2750/2754 Product Introduction
Key Technical Specifications
2755 and 2757 ORP Electrodes
 Operating Range:        ORP: -2,000 to +2,000 mV
 Operating Temperature/Pressure:
          6.89 bar @ 0°C (100 psi @ 32° to 149° F)
          4.00 bar @ 85°C (58 psi @150° to 185°F)
 Storage Temperature: > -12° C (11° F)
 Pipe Size Range:        1/2 in. and up. Use +GF+ SIGNET installation fittings from 1/2 to 4 in. (use pipe adapters in pipes over 4 in.)
                         Submersion with 3-2750 sensor requires 3/4 in. NPT or ISO 7-1 /R 3/4 male threaded extension pipe.
 Efficiency:             > 97% @ 25°C (77 °F)
 ORP Response Time: Application dependent
 Materials:              CPVC Body
                         Glass
                         FPM-Viton® O-rings
                         Porous UHMW Polyethylene reference junctions
                         Platinum sensing surface
 Reference:              Solidified Acrlyamide Gel: 3.5M KCL saturated with AgCl
                         Element: Ag/AgCl
 Primary Functions:      2755: Flat surface resists fouling
                         2757: Bulb surface for general use
 Weight:                 0.25 kg (0.55 lb)




                                                                                                                              1 August, 2001
                                                                                                               2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
Target Applications

Application:                           Use:
   Waste Treatment Systems            Final Effluent Input to Recorder
                                       Input to Proportional Controller

   Plating Systems                    Input to Proportional Controller

   Aquatic Environmental Monitoring   Process Input to Recorder

   Cooling Towers                     Input to Proportional Controller

   Pool/Spas/Fountains                Input to Proportional Controller




                                                                       1 August, 2001
                                                        2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
  Wiring and Installation
  2750 (4-20 mA)

Process Signal          Wire Color
4-20 mA "+"             BLK
                                                                  SW2
                        RED




                                                            Run




                                                                        Cal
                                           SW1
4-20 mA "-"             WHT
                        SHLD                                                   D1
                                     +                                  BLK
                                                                        RED
                                     -                                  WHT

                                     S                                  SHLD




              +        -                   -         +
                  Power                       Load
                 Supply                  up to 600 ohms
              12 to 24 VDC               including wiring




                                                                                                   1 August, 2001
                                                                                    2750/2754 Product Introduction
 Wiring and Installation
 2750 (S3L)

Process Signal      Wire Color
S3L Power           BLK
                                                               SW2
S3L Data            RED




                                                         Run




                                                                     Cal
                                                SW1
S3L GND             WHT
                    SHLD                    +                                  D1
                                                                     BLK
                                                                     RED
                                            -                        WHT

                                            S                        SHLD




                    +             -
                          S3L
                        pH/ORP
                         Device

                                                RS-232
                                                Device
                                                  *
                                        3                                  3
          * Products under development: S L™ pH/ORP devices and S L to RS-232 adapter card / command set
                                                                                                   1 August, 2001
                                                                                    2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
    Competitive Matrix




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                                                                                                                                        S
    Make/Model      Price                               4
                    $465      Multiple           0 to 14 pH               Yes       Yes          Yes       Yes   CPVC or Valox   Viton or EPDM      Panel Option
+GF+SIGNET 2750              pH or ORP         -2000 to +2000                                                                                         3-5091
                                               Factory Scaled
                    $675      Bulb only          0 to 14 pH               Yes       Yes           No       No     LCP Epoxy         Rubber              None
   GLI 6428-9001                                                                                                                     RTV

                    $430     Not included        0 to 14 pH       Remote only Remote only         No       No        N/A              N/A          3-1/2 digit LCD
  Omega pHTX-11                                Field Scalable      15 ft. limit 15 ft. limit




  Information presented herein is deemed accurate as of July 5, 2001.
  +GF+ SIGNET is not responsible for changes in accuracy thereafter.
                                                                                                                                                  1 August, 2001
                                                                                                                                   2750/2754 Product Introduction
Table of Contents

   Description of Product(s)

   Theory of Operation

   Features, Advantages and Benefits

   Key Technical Specifications

   Target Applications

   Wiring/Installation

   Competitive Matrix

   Ordering Information


                                                       1 August, 2001
                                        2750/2754 Product Introduction
Ordering Information

pH/ORP Sensors
Part Number         Code No.      Description
3-2750-1            159 000 744   In-Line pH/ORP Sensor
3-2750-2            159 000 745   In-Line pH/ORP Sensor w/Cal
3-2750-3            159 000 746   Submersible pH/ORP Sensor(NPT)
3-2750-4            159 000 842   Submersible pH/ORP Sensor (ISO)
pH Electrodes
3-2754              159 000 747   Flat pH Electrode
3-2754-HF           159 000 748   Flat pH Electrode, HF-RES
3-2756              159 000 750   Bulb pH Electrode
3-2756-DI           159 000 751   Bulb pH Electrode, DI-RES
ORP Electrodes
3-2755              159 000 749   Flat ORP Electrode
3-2757              159 000 752   EXT TIP ORP Electrode
J-Box Accessories
3-8050-1            159 000 753   UNI-MOUNT J-BOX
3-8050-2            159 000 754   UNI-MT J-BOX, pH/ORP Cal
3-8052-1            159 000 755   NPT MOUNT J-BOX
3-8052-2            159 000 756   NPT-MT J-BOX, pH/ORP Cal
3-9000.392-1        159 000 839   Liquid tight connector kit, NPT (1 connector)
3-9000.392-2        159 000 841   Liquid tight connector kit, PG13.5 (1 connector)

                                                                                  1 August, 2001
                                                                   2750/2754 Product Introduction
+GF+ SIGNET “Product”

             Conveyance



                          Measurement




                                           Control

                                                  1 August, 2001
                                   2750/2754 Product Introduction

				
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