$1,038.00 $934.20
  • 3-8630-3P
  • Usually ships in 1-2 weeks



  • Displays free chlorine 0 to 5 ppm (mg/l)
  • Two programmable 4 to 20 mA outputs
  • Two mechanical relays
  • Temperature and pH Compensation
  • Displays diagnostic information from sensor memory
  • Simple setup and easy customization
  • Backlit LCD display


The GF Signet 8630 ProcessPro Chlorine Transmitter simultaneously displays free chlorine and pH levels on a bright LCD backlight display.

The 8630 transmitter has two 4 to 20 mA outputs that can be programmed to transmit chlorine, pH or temperature information to a data collection device.

Two dry-contact mechanical relays can be used to deliver an alarm signal or activate a chlorine dosing system.

Programming is simple and easy with GF Signet's standard 4 button keypad. The menu option allows the use of an optional pH sensor to accurately calculate free chlorine level or select "Manual pH input" and enter the applications stable pH level to determine free chlorine levels.

GF Signet 8630 Chlorine Transmitter Specifications:
Signet 3-2630-2 Free Chlorine Electrode
3-2650-7 Amperometric Electronics
3-2724-00 Flat pH Electrode
3-2750-7 pH sensor electronics
System Operational Ranges Free Cl: 0 to 5 ppm
pH Input Range: 0 to 14 pH
Chlorine Compensation Range pH: 5.0 to 9.0 pH (Free Chlorine)
Temperature Range 0 to 45°C (32 to 113°F)
Max. Cable Distance Digital (S3L): 30 m (100 ft) max.
4 to 20 mA output: 305 m (1,000 ft) max.
Power 12 to 24 VDC ±10%, regulated, 250 mA max. current
Sensor Power 5 VDC ±1% @ 25 °C, regulated
Input Specifications One Digital (S3L) input from amperometric sensor,
One Digital (S3L) input from pH sensor
Output Specifications 4 to 20 mA, isolated, adjustable span, reversible with minimum and maximum endpoint adjustment
Relay Outputs 2 mechanical SPDT contacts: High, Low, Off Pulse, or Window range
Operating Temperature -25 to 120°C (-13 to 248°F)
Relative Humidity 0 to 95%, non-condensing
Maximum Altitude 2000 m (6,562 ft)
Enclosure NEMA 4X/IP65 front
Standards and Approvals
ISO 9001 for Quality and ISO 14001 for Environmental Management
RoHS compliant