Electrodeless Conductivity Sensors From Walchem Corporation
Electrodeless conductivity sensors measure conductivity of a solution utilizing encapsulated, non-contacting, toroidal technology.
They may be installed in a variety of very harsh chemical control applications, including oily cleaner baths, chromates, rinse tanks, fume scrubbers and other concentrated chemicals up to a conductivity of 1000 mS/cm. The non-contacting, toroidal sensor technology is immune to thin coatings and the contamination and calibration problems that direct contacting sensors are prone to.
W400 and WebMaster controllers require active sensors. These sensors contain electronics to convert the sensor signal to a voltage that these controller can read. Each sensor is specific for the range of conductivity that it can detect.
Measurement Performance for Active Sensors:
W100 controllers require passive sensors.
A single sensor functions over the entire range of conductivity
Measurement Performance for Passive Sensors: