5
GF 263X Series Chlorine Electrodes
Operation
Electrode Range:
The electrode must match the type and range of
chlorine concentration to be measured.
Flow Rate:
The electrode must have a stable and constant
fl
ow of water past its
membrane for accurate measurement. When the sensor is installed
in the Tee
fl
ow cell (see Ordering Information), the
fl
ow rate must range
from 37.8 to 75.7 LPH (10 to 20 US g/h).
When the sensor is installed in the Flow Cell Block
3-4630.392 (159 001 690), the
fl
ow rate range should be
30.24 to 45.36 LPH (8 to 12 US gph).
Sensor Conditioning: 4 hours
A new electrode requires conditioning of 4 hours with the electrode
powered on and chlorinated water
fl
owing past the sensor tip to
generate a stable reading.
Subsequent start-ups can require an electrode conditioning of up to two hours.
The maximum allowable operating pressure
must be less than 0.48 bar (7 psi).
Higher pressures will damage the electrode.
The electrode should not be used in water
containing surfactants, oils, organic chlorine
or stabilizers such as cyanuric acid.
Part Number
Chlorine Range
Chlorine Type
3-2630-1
0.02 to 2 ppm (mg/L)
Free Chlorine
3-2630-2
0.05 to 5 ppm (mg/L)
3-2630-3
0.1 to 20 ppm (mg/L)
3-2632-1
0.02 to 2 ppm (mg/L) Chlorine Dioxide
Calibration
A new chlorine electrode or one that has had the membrane cap changed must be calibrated. Refer to the 463X Analyzer System
or 9950-3 Chlorine Controller manuals for electrode and instrument calibration information. A diethyl-p-phenylenediamine (DPD)
colorimeter test kit (not included) is required for sensor calibration. A sample is taken and analyzed with the DPD test kit, then this
value is entered into the Signet 9950-3 Chlorine Controller.
•
Calibrate after a membrane cap change.
•
Check calibration one day after sensor is placed in service.
•
Check calibration weekly to monthly depending on process requirements.
