Replacement electrodes for ISE sensors VARiON@Plus WTW Germany

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.

Specification :

• 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	NO3-N: 1 … 1,000 mg/l / 1 mg/l; 0.1 ... 100 mg/l / 0,1 mg/l NO3-: 5 … 4500 mg/l / 1 mg/l; 0.5 ... 450.0 mg/l / 0,1 mg/l
  Compensation Ranges	K+: 0.1 ... 1,000 mg/l / 0.1 mg/l	Cl-: 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)
  Warranty	1 year for defects of quality