Contacting Conductivity Sensors
From Walchem Corporation

Contacting Conductivity Sensors

Contacting conductivity sensors measure conductivity of a solution via electrodes. They are ideal for use in cooling towers and boilers, reverse osmosis equipment, and other non-oily applications. A variety of cell constants are available to handle a range of conductivities. They are available in several different configurations:

Cooling Tower Contacting Conductivity Sensors

These cell constant 1.0 sensors are designed for cooling towers with water up to 30,000 µS/cm. Lower pressure (up to 150 PSI, 10 atm) polypropylene sensors are available with graphite or stainless steel electrodes, and may be installed inline or submersion. High pressure (up to 300 PSI, 20 atm) inline sensors are constructed from stainless steel and PEEK.

WebMaster controllers require active sensors. These sensors contain electronics to convert the sensor signal to a voltage that these controllers can read. W400 series controllers use passive sensors that have cables dressed specifically for them. W100 series controller’s passive sensors are dressed differently.

Performance specifications vary with the type of controller, refer to the controller brochure. Typical cooling tower temperatures are 0 to 70ºC, 32 to 158ºF.

Boiler Contacting Conductivity Sensors

These cell constant 1.0 sensors are designed for boilers with water up to 10,000 µS/cm and pressures up to 250 PSI, 16.7 atm). These inline sensors are constructed from stainless steel and PEEK.

WebMaster controllers require active sensors. These sensors contain electronics to convert the sensor signal to a voltage that these controllers can read. W400 and W100 series controllers use passive sensors.

Performance specifications vary with the type of controller, refer to the controller brochure. Typical boiler temperatures are 0 to 205ºC, 32 to 401ºF.

General Purpose Contacting Conductivity Sensors (for W100 Series)

These passive sensors are available in a variety of cell constants for use in conductivities up to 300,000 µS/cm. Typical applications include RO systems and boiler condensate monitoring. They may be mounted inline or submersion, using either polypropylene (0-100 ºC, 100 PSI) or stainless steel (0-120 ºC, 200 PSI) ½” NPT mounting fittings.

Note:Conductivity ranges above apply at 25°C. At higher temperatures, the range is reduced per the range multiplier chart.

Conductivity Sensors Downloads

	Conductivity Sensor Brochure
	Contacting Conductivity Sensors for W100 Series