WQ201 pH Sensor

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The pH sensor output is 4-20 mA with a three wire configuration. The pH sensor's electronics are completely encapsulated in marine grade epoxy within a stainless steel housing (online version has 1 x 8 inch PVC pipe nipple, threaded both ends with cap). The pH sensors also use removable shields and replaceable pH sensor elements for easy maintenance.

  • Overview


    • Fully encapsulated electronics
    • 4-20 mA output
    • Marine grade cable with strain relief
    • Stainless steel housing
    • Replaceable pH sensor element

    Global Water's GL500 data logger adds recording capabilities to the pH sensors. The GL500 data logger connects to the sensor's 4-20mA output to record data. In addition, Global Water offers the PC320  Controller to use the pH sensor's output to control pumps or alarms.

  • Specifications
    WQ201 pH Sensor  
    Output 4-20 mA

    0-14 pH

    Accuracy 2% of full scale
    Maximum Pressure

    40 psi

    Operating Voltage 10-30 VDC

    Current Draw

    5.5 mA plus sensor output

    Warm Up Time

    3 seconds minimum

    Operating Temperature 23 to +131°F (-5 to +55°C)
    Size of Probe Standard: 1-1/4" Diameter x 10" L (3.2 cm dia. x 25.4 cm long)
    Online: 2" Diameter x 12" L (5 cm dia. x 30.5 cm long)
    Weight Standard and Online 1 lb. (454 g)
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