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Disinfection Sensor0 pages
Disinfection Sensors
Amperometric Disinfection Sensors
Walchem’s amperometric disinfection sensors offer a cost effective and reliable
solution to your disinfection control requirements. Compatible with the WDIS and
WebMaster® series controllers, the sensors continuously and directly measure the
chemical concentration, without the use of reagents.
We offer sensors, in varying ranges of concentration, for free chlorine/bromine, total
chlorine, chlorine dioxide, ozone, peracetic acid and hydrogen peroxide. Whether
the application is a cooling tower, food and beverage, drinking water, wastewater, or
swimming pool, these sensors are the ideal solution.
Summary of Key Benefits
Low maintenance - no costly reagents or tubing to replace
Broad range of applications - wide variety of oxidizers and measurement ranges
Fast response - continuous measurement technique
No waste - the sample can be returned to the process
Free Chlorine/
Bromine
Range (Nominal)
Free Chlorine/Bromine
- Extended pH Range
Total
Chlorine
Chlorine
Dioxide
Peracetic
Acid
Ozone
Hydrogen
Peroxide
0-2 mg/l
0-20 mg/l
0-200 mg/l
0-20 mg/l
0-20 mg/l
0-2 mg/l
0-20 mg/l
0-200 mg/l
0-200 m/l
0-2,000 mg/l
0-20,000 mg/l
0-20 mg/l
0-200 m/l
0-2,000 mg/l
0-20,000 mg/l
0-16.75 mg/l
0-1.67 mg/l
0-16.75 mg/l
0-167.5 mg/l
0-167.5 mg/l
0-1,675 mg/l
0-16,750 mg/l
0-16.75 mg/l
0-167.5 mg/l
0-1,675 mg/l
0-16,750 mg/l
0-100 mg/l
0-1000 mg/l
0-10,000 mg/l
0-10 mg/l
0-100 mg/l
0-1000 mg/l
0-10,000 mg/l
0.01 mg/l
0.1 mg/l
1 mg/l
10 mg/l
Range (WDIS)
0-1.33 mg/l
0-13.25 mg/l
0-132.5 mg/l
Range (WIND)
0-0.8 mg/l
0-8 mg/l
0-80 mg/l
0-7.5 mg/l
0-10 mg/l
0-1.0 mg/l
0-10 mg/l
0-100 mg/l
Range (WM1)
0-8 mg/l
0-7.5 mg/l
0-10 mg/l
0-10 mg/l
0.001 mg/l
0.01 mg/l
0.1 mg/l
0.01 mg/l
0.01 mg/l
0.001 mg/l
0.01 mg/l
0.1 mg/l
0.1 mg/l
1 mg/l
10 mg/l
Total Cl2 (100%)
ClO2 (100%)
Ozone (130%)
ClO2 (100%)
Free Chlorine (5%)
Ozone (2500%)
PAA (100%)
Ozone (250%)
ClO2 (100%)
H2O2 (0.5%)
Resolution
Sensitivity
HOCl (100%)
HOBr (100%)
Ozone
ClO2 (900%)
NOT for use
with isocyanuric
acid or stabilized
bromine
0-12.5 mg/l
HOCl (100%)
HOBr (100%)
Ozone
ClO2 (100%)
HOCl with isocyanuric
acid
NOT for use with
stabilized bromine
Flow rate of sample
Ozone (100%)
ClO2 (6%)
H2O2 (100%)
Chlorine
PAA
Ozone
(none may be
present)
30 to 100 liters/hour (0.13 to 0.44 gal/min)
pH range of sample
6.8 – 8.0 (pH
must be stable
within ± 0.10)
Conductivity range
of sample
Up to 4% NaCl
4.0 – 12.0
1.0-11.0
1.0-7.0
2.0-11.0
2.0-11.0
50-10,000 µS/cm
Response time
30 seconds
2 minutes
2 minutes
30 seconds
3 minutes
50 seconds
5-10 minutes
Conditioning time
60 minutes
120 minutes
120 minutes
60 minutes
60 minutes
60 minutes
180 minutes
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