water hardness measuring instrument / digital / electronic / potentiometric
Softening Control



  • Measured value:

    water hardness

  • Technology:

    digital, electronic, potentiometric

  • Applications:

    industrial, process, for liquids, for long-term measurements

  • Other characteristics:

    automatic, compact, high-precision, continuous, in-line, for integration


Device for online water hardness monitoring with output of additional information for the optimation of regeneration activation

Softening Control monitors a soft water hardness threshold, which can be parameterized in individual steps of 0.25% up to 10% residual water hardness in reference to raw water hardness. Through a current loop the indicated water hardness value can put out and allows a record of the hardness progress. It works without any addition of indicators or reagents.


Dimension of case: 95 x 145 x 35 mm (B x H x D), wall mounted

Installation space: 120 x 220 x 120 mm (B x H x D)

Weight appr.: 800 g

Surrounding temperature: 5°C ... 50°C

Relative humidity: 20% ... 80%

Power supply: 100 … 240 V / 50 … 60 Hz

Power consumption: 15 V DC, appr. 4 Watt

Raw and soft water connection: branch pipe with connecntion for PA-tube o.d. 4 mm, i.d. 2 mm, up
streamed dirt filter ≤ 0,1 mm recommended

Raw and soft water pressure: minimum 1 bar up to maximum 10 bar

Drain: minimum ø 6 mm, pressure free

Quality of raw and soft water: natural water, free of grease, oil or brine
germ content < 5000 CFU/ml

Hardness range raw water: 0.18 mmol/l up to 10.8 mmol/l, natural water

Evaluation of water hardness in raw water: 100%

Evaluation of residual hardness in soft water: defined threshold value between 0,25% up to 10% in
reference to raw water hardness

Operation time of sensor: approx. 6 … 9 month (without warranty)