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Electrodeless Conductivity Sensors
From Walchem Corporation

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

Electrodeless Conductivity Sensors

Electrodeless Conductivity SensorsElectrodeless 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.

  • CPVC or PEEK construction
  • In-line or submersion

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:

Conductivity Ranges: 100-1000 �S/cm, 1000-10,000 �S/cm, 10-100 mS/cm , 100–1000 mS/cm
Conductivity Resolution: 1 �S/cm, 1 �S/cm, 0.1 mS/cm, 1 mS/cm
Conductivity Accuracy: � 1% of Span within the specified range
Temperature Range: -5 to 80ºC, 20 to 180ºF (CPVC) -5 to 88ºC, 20 to 190ºF (PEEK)
Temperature Resolution: 1º(C or F)
Temperature Accuracy: � 1% of Reading

W100 controllers require passive sensors. A single sensor functions over the entire range of conductivity
(500 - 2,000,000 �S/cm), and the range is selected in the controller's software.

Measurement Performance for Passive Sensors:

Conductivity Ranges: 500-12,000 �S/cm, 3,000-40,000 �S/cm, 10,000-150,000 �S/cm, 50,000-500,000 �S/cm, and 200,000-2,000,000 �S/cm
Conductivity Resolution: 1 �S/cm, 1 �S/cm, 10 �S/cm , 10 �S/cm and 100 �S/cm
Conductivity Accuracy: � 1% of Span within the specified range
Temperature Range: 0 to 70ºC, 32 to 158ºF (CPVC) 0 to 88ºC, 32 to 190ºF (PEEK)
Temperature Resolution: 1º (C or F)
Temperature Accuracy: � 1% of Reading





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