Chlorine Analyzer | 4630

Chlorine Analyzer | 4630

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Chlorine Analyzer 4630 Overview

The Chlorine Analyzer 4630 System is an integrated all-in-one system designed to measure free chlorine. The Chlorine Analyzer 4630 has a pH sensor that is used to accurately measure free chlorine in applications that have varying pH values (±0.20 pH units).  Because free chlorine concentration is pH-dependent, the Chemical Guard feature interrupts/disables the relay that is assigned to the oxidant chemical (such as sodium hydrochloride) until the pH of the application is corrected. The 4630 series also comes complete with a flow switch that will disable the mechanical relays to the dosing pumps when the system is off or the flow is interrupted to the flow cell.

The unique integrated clear flow cell accommodates the free chlorine and pH electrode, flow regulator, filter, and variable area flow indicator in one compact unit. An integrated flow regulator with a 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 the 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 4630 Free Chlorine Analyzer System comes complete with everything needed to support chlorine monitoring for 1 full year of operation. Panel design allows quick and easy installation and comes complete with four 4 to 20 mA outputs, a flow switch with relay interrupt, four binary inputs, and two mechanical relays.

Chlorine Analyzer 4630 Features

  • EPA 334.0 Compliant
  • Reagent free measuring
  • Chemical Guard prevents overdosing on oxidants chemicals
  • Built-in flow switch
  • Chlorine and pH electrode performance data
  • Automatic timestamp after successful calibration
  • Customer enabled alarm feature for recalibration
  • Complete panel system allows for quick and easy installation
  • Built-in flow regulator maintains constant flow and pressure to the sensors regardless of inlet pressure
  • Automatic pH compensation



Chlorine Analyzer 4630 Technical Specifications

Panel Black Acrylic
Flow Cell Acrylic
Wiring Enclosure Polycarbonate
Wetted Materials
Flow Cell
   Flow Cell, Spacer Rings Acrylic
   Flow Regulator Housing Polycarbonate
   Strainer, E-clip, Regulator Spring, Float Stainless Steel
   Valves, Vent Polypropylene
   Flow Cell O-rings, Diaphragm EPR (EPDM), FKM
   Chlorine Electrode PVC | PTFE | FKM | Nylon | Silicone
   pH electrode PPS | Glass | UHMWPE, FKM
Flow Switch Polypropylene
Sealing Tape on Valves, Plug and Vent PTFE
Plug Polyethylene
Max. 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 of flow and pressure
Flow Tolerance ± 15% or rated specification above
Flow Rate Limits 30.24 to 45.36 LPH 8 to 12 gph (US)
Storage Temperature 0 °C to 65 °C 32 °F to 149 °F
Operating Temperature 0 °C to 45 °C 32 °F to 113 °F
pH Range 5.0 to 8.2 pH
DC Input (standard) 24 VDC nominal (12 to 32 VDC, ± 10% regulated)
Relative Humidity 0 to 95%
Maximum Altitude 4000 m (13,123 ft)
Enclosure NEMA 4X (with output wire glands sealed)
Shipping Weight
10 kg 22 lb
Standards and Approvals
China RoHS
Manufactured under ISO 9001, ISO 14001, and ISO 45001


Georg Fischer

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Additional information


0.02 to 2 ppm, 0.02 to 5 ppm, 0.05 to 20 ppm


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