Walchem WebMaster - 6 Specifications

20
6.0 Specifications
Calibration
Weekly
Change electrolyte
3-6 months
Change membrane cap
1 year
Electrical
Power requirements
±5 VDC, 5 mA maximum
Signal
0 to -2000 mVDC
Maximum cable length
100 feet (30.5 meters)
Extension cable
2 twisted pair, 22 AWG, shielded, 35 pF/ft (Walchem
100084 or Belden 8723)
Mechanical
Operating Temperature
Free Chlorine/Bromine
0 to 45°C (32 to 113°F)
Free Chlorine/Bromine
(Extended pH Range)
Total Chlorine
Chlorine Dioxide
0 to 50°C (32 to 122 °F)
Peracetic Acid
0 to 45°C (32 to 113 °F)
Ozone
0 to 50°C (32 to 122 °F)
Hydrogen Peroxide
0 to 45°C (32 to 113 °F)
Operating Pressure (Sensor)
0 to 3 atmosphere (0 to 44 psi) – Total Chlorine (CP4)
0 to 1 atmosphere (0 to 14.7 psi) – All other sensors
Operating Pressure (Optional
flow switch)
0 to 10.3 atmosphere (0-150 PSI) see graph on next
page
Storage
Sensor: Frost-protected, dry and without electrolyte no
limit at >5 to <40°C ( >41 to <104 °F)
Membrane cap: Used membrane caps cannot be stored!
Electrolyte: in original bottle protected from sunlight
min. 1 year at >5 to <25°C (>41 to <77°F)
Flow cell inlet
¼” NPTF
Flow cell outlet
¾” NPTF
Wetted materials of construction
Sensor
Free Chlorine/Bromine
PVC, Polycarbonate,
Silicone rubber
Free Chlorine/Bromine
(Extended pH Range)
PVC, Polycarbonate,
Silicone rubber, SS, PEEK
Total Chlorine
Chlorine Dioxide
Peracetic Acid
Ozone
Hydrogen Peroxide
Flow cell body
Isoplast
O-Ring
FKM