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 (range varies with solution temperature). Lower pressure (up to 150 PSI, 10 bar) polypropylene sensors are available with graphite or stainless steel electrodes, and may be installed inline or submersion. High pressure (up to 300 PSI, 20 bar) 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, W600 and W900 series controllers’ 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 70°C, 32 to 158°F.
Boiler Contacting Conductivity Sensors
These cell constant 1.0 sensors are designed for boilers with water up to 30,000 μS/cm (range varies with solution temperature) and pressures up to 250 PSI (16.7 bar). These inline sensors are constructed from stainless steel and PEEK.
For the W100, W600 and W900 series controllers, a cell constant 10.0 sensor is available designed for boilers with water up to 300,000 μS/cm (range varies with solution temperature).
WebMaster controllers require active sensors. These sensors contain electronics to convert the sensor signal to a voltage that these controllers can read. W100, W400, W600 and W900 series controllers use passive sensors.
Performance specifications vary with the type of controller (refer to the controller brochure). Typical boiler temperatures are 0 to 205°C, 32 to 401°F.
General Purpose Contacting Conductivity Sensors (for W100, W600 and W900 Series Controllers ONLY)
These passive sensors are available in a variety of cell constants for use in conductivities up to 300,000 μS/cm (range varies with solution temperature). Typical applications include RO systems and boiler condensate monitoring. They may be mounted inline or submersion, using either polypropylene (0-100 °C, 100 PSI/6.9 bar) or stainless steel (0-120 °C, 200 PSI/13.8 bar) ½” NPT mounting fittings. These inline sensors are constructed from stainless steel and PTFE with EPR o-rings.
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