The GF Signet 3-2630-3 Free Chlorine Electrode is designed for accurate and reliable measurement of free chlorine concentrations ranging from 0.1 to 20 ppm in freshwater treatment applications. It utilizes an amperometric sensing method and features built-in memory, temperature compensation, and quick-connect installation via the patented DryLoc® connector. This sensor requires the 2650 Amperometric Electronics and is compatible with the 9950-3 or 9950-4 Chlorine Controller.
⚠ Important: This sensor must be in chlorinated water at all times during operation and should not be used in water with surfactants, oils, organic chlorine, or stabilizers such as cyanuric acid.
Features:
-
Measurement range: 0.1 to 20 ppm (mg/l) free chlorine
-
Integrated Pt1000 temperature element for automatic temperature compensation
-
Embedded memory chip stores sensor information including calibration and service data
-
DryLoc® quick-connect with gold-plated contacts ensures a watertight and reliable seal
-
Accurate and repeatable measurements when paired with GF 2650 Electronics
-
CPVC body with gold working electrode and silver halide reference
Applications:
-
Water distribution networks
-
Ground and surface water monitoring
-
Food and beverage process water
-
Swimming pools and water parks
-
HVAC cooling water systems
Specifications:
| Parameter | Specification |
|---|---|
| Measurement Range | 0.1 to 20 ppm (mg/l) |
| Repeatability | ±0.08 ppm or 3% of range (whichever less) |
| Response Time (T90) | < 2 minutes |
| Operating pH Range | 5.5 to 8.2 pH |
| Temperature Range | 5°C to 45°C (41°F to 113°F) |
| Pressure Rating | Max 7 psi @ 25°C (0.48 bar @ 77°F) |
| Required Flow Rate | 8–12 GPH (30.24–45.36 LPH) across membrane |
| Connection | DryLoc® connector |
| Materials (Wetted Parts) | PVC, PTFE, FKM, Nylon, Silicone |
| Shipping Weight | 0.30 lb (0.14 kg) |
| Certifications | UKCA, CE, FCC, RoHS, ISO 9001 |
Compatible Components (Sold Separately):
-
2650 Amperometric Electronics
-
9950-3 or 9950-4 Chlorine Controller
-
Flow Cell 3-3610-1 / 3-3610-2
-
Sensor Maintenance Kit: 3-2630.398
-
Membrane Replacement: 3-2630.394
-
Electrolyte Kit: 3-2630.391
