• Replacement Electrodes for ISE Sensors - WTW
  • Replacement Electrodes for ISE Sensors - WTW
  • Replacement Electrodes for ISE Sensors - WTW
  • Replacement Electrodes for ISE Sensors - WTW

Replacement electrodes for ISE sensors - WTW

  • SKU: 107044
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  • Description

    Replacement electrodesfor ion selective NH4/NO3 sensors of the IQ SENSOR NET

    The replacement electrodes for the digital ISE sensors convince with reliable measurements:

    • Long lifetime (18 months)
    • Fast exchange
    • No drift
    • Easy matrix adjustment

    These especially stable electrodes ensure long operation times and a simple cleaning method. To measure, simply install the respective electrode into the IQ SENSOR NET, everything else will take place automatically. In the measured value display, the values that have already been compensated, are displayed, you can select potassium or chloride output. These values also stand for the signal output per 0/4-20 mA output or digital output (Profibus, Modbus RTU, Ethernet/IP, Modbus TCP, PROFINET) is directly available.

    The electrodes are replacement electrodes for the ISE sensors VARiON®, AmmoLyt® and NitraLyt®. Thereby, all 5 electrodes (1 reference, 2 measuring, 2 compensation electrodes) are basically usable for the 2 parameter sensor VARiON®. The measuring electrode VARiON®Plus NH4 and the compensation electrode VARiON®Plus K can further be used for the ammonium sensor AmmoLyt®. The measuring electrode VARiON®Plus NO3 and the compensation elektrode VARiON®Plus Cl are also fitting into the nitrate sensor NitraLyt®. The reference electrode can be connected to all 3 sensors.

  • Specifications

    Measuring range/ Resolution

    NH4-N: 1 ... 2,000 mg/l / 1 mg/l;
    0.1 ... 100 mg/l / 0,1 mg/l

    NH4+: 1 ... 2,580 mg/l / 1 mg/l;
    0.1 ... 129.0 mg/l / 0,1 mg/l

    Compensation Ranges

    K+: 0.1 ... 1,000 mg/l / 0.1 mg/l

    Measuring Accuracy in laboratory standard solutions

    ± 5 % of measured value ± 0.2 mg/l in standard solutions

    Calibration Procedures

    Matrix adjustment against any reference value, 2-point-calibration possible with multiple standard solution

    Working Life (typically)

    Reference electrode: 18 months,
    measuring and compensation electrode: 18 months (in typical application - municipal sewage plants)

    Temperature Measurement and Compensation

    Integrated NTC thermistor,

    Range 32 °F … 104 °F (0 °C … +40 °C), Accuracy ±0.5 K, Resolution 0.1 K, t95 < 20 s

    Pressure Resistance

    Maximum 0.2 bar (incl. SACIQ sensor connection cable, with installed electrodes)

    Ambient Conditions

    Operating temperature: 32 °F … 104 °F (0 °C … +40 °C), storing temperature: 32 °F … 104 °F (0 °C … +40 °C)


    1 year for defects of quality