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NEW +GF+ SIGNET 8750 pH/ORP Transmitter

8750-1 Print Operation ManualFrench ManualGerman ManualSpanish Manual

8750-2 Print Operation ManualFrench ManualGerman ManualSpanish Manual

8750-3 Print Operation ManualFrench ManualGerman ManualSpanish Manual

3-8750-X (FIELD) 3-8750-XP (PANEL)

Features 

  • Display in Deg. C or Deg. F
  • Hold and Simulate functions
  • Integral or remote mounting

    • Relay options
  • Output scalability
  • Dual output option allows temperature and pH signal transmission
  • 2 x 16 character dot matrix LCD
  • Chemical resistant enclosure and self-healing window
  • Large pushbuttons
  • Clearly marked terminal labels

Applications

  • Neutralization systems
  • Heavy metals recovery
  • Plating control
  • Scrubber control
  • Pool and spa control
  • Environmental study
  • Water treatment
  • Water quality monitoring
  • Waste treatment
  • Disinfecting 

Description

The +GF+ SIGNET 8750 pH/ORP Transmitter is designed for broad application and ease of setup and use. The unit auto-configures for either pH or ORP use when connected to +GF+SIGNET pH or ORP sensors. Multiple mounting options allow for installation best suited to your particular application. The automated "Easy-cal" menu features automatic buffer recognition for mistake proof pH or ORP sensor calibrations. Two-line LCD provides sensor diagnostic information for ease in system maintenance.

Technical Features

Mounting Version Part No. Wire Power Sensor Input 4 to 20 mA Output Open Collector/Relay
Field
 
 

3-8750-1 2 1 1 1 O.C. Hi, Lo
Pulse or Off
3-8750-2 4 1 1 2 Relays Hi, Lo
Pulse or Off
3-8750-3 4 1 2
pH, Temp
or ORP		 2 O.C.'S Hi, Lo
Pulse or Off
Panel
 
 

3-8750-1P 2 1 1 1 O.C. Hi. Lo
Pulse or Off
3-8750-2P 4 1 1 2 Relays Hi, Lo
Pulse or Off
3-8750-3P 4 1 2
pH, Temp
or ORP		 2 O.C.'S Hi, Lo
Pulse or Off

 

Dimensions

8750 Dimensions

Installation

The transmitter is available in a panel mout or a field version. Select the universal mount kit (3-8050) to mount the transmitter on a surface near the sensor.
 
1. Panel Mount 3-8750-XP 

2. Universal Mount 3-8750-X Transmitter

All panel mount transmitters (3-8750-XP) include a mounting bracket and gasket for a NEMA 4X watertight panel installation. Panel mount transmitters fit into a standard 1/4 DIN panel cutout.  The Universal Mount Kit (3-8050) can be ordered separately and includes a conduit base, locking ring, and universal adapter for mounting the transmitter on a pipe, wall, or other stationary surface.

Wiring

Technical Data

General
Compatible electrodes: +GF+ SIGNET 3-27XX pH/ORP
Preamplifier/Electrodes 
Accuracy: ±0.03 pH, ±2 mV's ORP 
Enclosure: 
· Rating: NEMA 4X/IP65 front 
· Case: PBT 
· Window: Polyurethane coated polycarbonate 
· Keypad: Sealed 4-key silicone rubber 
· Weight: Approx. 325g (12 oz.) 
Display: 
· Alphanumeric 2 x 16 LCD 
· Contrast: User selected, 5 levels 

Environmental
Operating temperature: -10 to 70°C (14 to 158°F) 
Storage temperature: -15 to 80°C (5 to 176°F) 
Relative humidity: 0 to 95%, non-condensing

Standards and Approvals
· CSA, CE, UL listed 
· Manufactured under ISO 9001

 Electrical
Sensor input range: 
· pH: 0.00 to 14.00 pH 
· temp. 3K Balco, -25 to 120°C (-13 to 248°F) 
· ORP: -1000 to +2000 mV, isolated (10K I.D. resistance T+, T-) 
Current output: 
· 4 to 20 mA, isolated, fully adjustable and reversible 
· Power: 12 to 24 VDC ±5%, regulated 
· Max loop impedance: 50 ohms max. at 12 V, 325 ohms max. at 18 V, 600 ohms max. at 24 V 
· Update rate: 0.5 seconds 
· Accuracy: ±0.03 mA at 25°C, 24 V
Relay output: 
· Mechanical SPDT contacts: Hi, Lo, Pulse, Off 
· Maximum voltage rating: 5 A at 30 VDC, or 5 A at 250 VAC resistive load 
· Hysteresis: User-adjustable 
· Max 400 pulses/min. Open-collector output: Hi, Lo, Pulse, Off 
· Open-collector, optically isolated, 50 mA max, sink, 30 VDC max. pull-up voltage. 
· Max 400 pulses/min. 

Ordering Information 

Mfr. Part No. Code  Description
3-8750-1 159-000-053 pH/ORP transmitter Field mount
3-8750-1P 159-000-054 pH/ORP transmitter Panel mount
3-8750-2 159-000-055 pH/ORP transmitter Field mount with relays
3-8750-2P 159-000-056 pH/ORP transmitter Panel mount with relays
3-8750-3 159-000-057 pH/ORP xmtr Field mount with dual input/output
3-8750-3P 159-000-058 pH/ORP xmtr Panel mount with dual input/output

Accessories

Mfr. Part No. Code  Description
3-8050 159-000-184 Universal mounting kit
3-8050.395 159-000-186 Transmitter NEMA 4X cover
3-8050.396 159-000-617 RC Filter kit

Engineering Specifications
· The transmitter shall be manufactured under ISO 9001 certified processes. 
· The transmitter shall be field or panel mountable.
· The transmitter shall display pH, mV and temperature.
· The display units shall be fully scaleable.
· The device shall meet NEMA 4X and IP65 standards.
· The operating voltage shall be 12 to 24 VDC.
· The transmitter shall have a 4 to 20 mA output with an open collector output, 5 to 30 VDC or a 4 to 20 mA output with 2 relays, or dual 4 to 20 mA outputs with dual open collector capability.
· The transmitter shall have security code capability.
· The transmitter shall have simulate capability.
· The transmitter shall hold an output value while calibrating.
· The transmitter shall be +GF+SIGNET, Model 8750 pH/ORP Transmitter.

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