Starting at $4,212.00
Starting at $3,790.80

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  • Reagent-free measuring
  • Complete panel system
  • Quick and easy installation
  • Applies constant flow and pressure to sensors
  • 100-240 VAC power supply
  • Two 4 to 20 mA outputs
  • Two mechanical relays
  • Optional pH and temperature compensation
  • CE, UL, and China RoHS

The GF Signet 4630 Chlorine Analyzer System is an integrated all-in-one system designed to measure free chlorine. The 3-4630 chlorine panel with pH sensor is used to accurately calculate free chlorine in applications that have varying pH values (±0.20 pH units).

In applications where the pH is stable, the pH sensor is not required and the pH value is manually entered into the transmitter to calculate the chlorine levels. The 3-4630 chlorine system can be used for reporting chlorine residuals in accordance with EPA Method 334.0

The unique integrated clear flow cell combines sensors, flow regulator, filter and variable area flow indicator in one compact unit. An integrated flow regulator with removable filter accepts inlet pressures of 1 to 8 bar (15 to 120 psi), while maintaining constant flow and minimal pressure to the sensors.

Water flows vertically into sensor tip eliminating bubble entrapment. The flow cell is designed to maintain a minimum amount of water to ensure sensors stay submerged, even when the system and flow is turned off.

The Signet 4630 Chlorine Analyzer System allows quick setup and easy installation and is supplied with a 100-240 VAC power supply, two 4 to 20 mA outputs and two dry contact mechanical relays. The flow cell accommodates two sensor: one chlorine and an optional pH sensor.

Residual chlorine monitoring applications for the GF Signet 4630 Chlorine Analyzer System

  • Water Distribution
  • Ground Water
  • Surface Water
  • HVAC Applications (cooling water)
  • Gray Water Dechlorination
  • Food and Beverage
  • RO Membrane Protection
  • Swimming Pools
  • Aquariums
  • Water Parks
GF Signet 4630 Chlorine Analyzer System Specifications:
Compatible Electrodes
Signet 3-2630-2 Free Chlorine Electrode
Signet 3-2724-00 Flat pH Electrode
Maximum Temperature/Pressure Rating
System Inlet Pressure Rating 1 to 8 bar (15 to 120 psi)
Pressure Regulator < 0.69 bar (10 psi) variation over all ranges
Flow Tolerance ±15%
Flow Rate Limits 30.24 to 45.36 LPH (8 to 12 US gal/h)
Operating Temperature 0 to 45°C (32°F to 113°F)
AC Input (standard) 100-240 VAC; 50-60 Hz, 0.17 A @ 100 VAC
DC Input 12 to 24 VDC ±10% regulated, 250 mA max.
Relative Humidity 0 to 95%
Maximum Altitude 2000 m (6,562 ft)
Enclosure NEMA 4X (with output wire glands sealed)
Standards and Approvals
Manufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management
China RoHS
UL Pending


GF Signet 2630 Free Chlorine Sensor
Designed to measure free chlorine in drinking water and wastewater treatment applications
GF Signet 2724-2726 pH and ORP Electrodes
DryLoc connector with corrosion-resistant gold-plated contacts, connects to the 2760 preamplifier or the 2750/1 sensor electronics
In Stock


GF Signet pH Buffer Solutions
Liquid pH buffer solutions conveniently packaged in one pint bottles
GF Signet pH Calibration Kit
Includes buffer solutions, mixing cups and a cup stand
GF Signet pH Buffer Kit
Includes 4, 7, 10 pH buffers in powder form


Please consider these optional accessories.

GF Signet 2650 Amperometric Electronics
Provides the polarization voltage and signal conditioning required by GF Signet Amperometric Sensors
GF Signet 8630 Chlorine Transmitter
Simultaneously displays free chlorine and pH levels
GF Signet FCL Electrolyte Kit
Replacement electrolytes for servicing GF Signet free chrlorine sensors


This product can be used in the following applications: