Bamosoft Control
 Bamosoft Control - Water Hardness Monitor

Water Hardness Monitor

Bamosoft Control

  • Compatible with any water softener system

  • Monitoring water softening process

  • Easy to install

  • Reagent-free

  • Application of calcium and magnesium ion-selective electrode

  • Easy to operate and maintain

  • Visual alarm and 4-20 mA Output

  • Environmentally friendly


BAMOSOFT Control is an online water hardness measuring system for continuous monitoring of water hardness differences between process inlet and process outlet of a connected water softening system based on cations exchange.
BAMOSOFT Control provides automatic water quality monitoring with a visual alarm and 4-20 mA output signal. The monitored softened water threshold value can be defined from 0.25% up to 10% in reference to raw water hardness (8 step values available). An independent pulse signal input allows triggering a monitoring cycle, when necessary. Through a current loop, the indicated relative water hardness value will obtained and allow a record of the softening progress. Using a bypass sampling, the instrument samples, time controlled or flow rate depending minimal amounts, raw and softened water from the process. It evaluates the residual hardness and alerts with exceeding of a preset threshold value. The threshold value can be configured with DIP switches by steps from 0.25% up to 10% (8 steps) of residual hardness in reference to 100% raw water hardness.

Example with tap water:
- Raw water hardness inlet: 100ppm
- Threshold value set up at 10%: 10 ppm
- 4-20 mA signal will cover the range 0 to 10 ppm

The water hardness measurements will be carried out cyclically every 15 minutes in a flow-through chamber (measuring cell) where a selective sensor for calcium and magnesium ions operates in an environment protected against pressure. In each measurement cycle, the water sample stays a preset period in the measuring cell and will be evaluated after a preset resting time. The measurement cycle can be controlled optionally by impulses from a flow meter. By automatically opening and closing of the upstream solenoid valves, the water samples will be replaced and rejected free of pressure. With exceeding of threshold value, a potential free switch will be activated with a delay of 1 minute. With recognizing of an interference or need of sensor exchange, a second potential free switch will be activated.

Required water features

Natural raw water with a hardness value between 20 ppm and 1,000 ppm

Water temperature: +5 to 30°C
pH-range: 5...9 pH
Chlorine content: < 500 μg/L
Germ content: < 5000 KBE/mL (< 5000 CFU/mL)

The water has to be free of acids, bases incl. brine and other basic liquids, tensides (surfactants), oils, solvents and heavy metals.

Technical Specifications

Dimensions: Wall mounting housing: 95 x 145 x 35 mm (Overall system 120 x 220 x 120 mm)
Mass: 800 g
Ambient temperature: +5...+50°C
Measuring range: 0.5 to 1,000 ppm
% R. H.: 20...80 %
Power supply: 100...240 V — 50/60 Hz / 0.2 A, included separated unit
Consumption approx. 6 Watt
Relay outputs: 2 SPDT, switching power 24 V / 1 A
Water connections For PA tube o.d. 4 mm, i.d. 2 mm
Pressure limits: 1 to 10 bar
Recommended up stream dirt filters ≤ 0.1 mm
Drain sample: Ø 6 mm as a minimum, pressure free
Water quality: Raw water, free of grease, oil and brine
Germ content: < 5000 KBE/mL
External cycle switch: Pulse limit: > 0.5 s as a minimum


Alarm threshold: / brine: Contact, potential free; switching power 24 V DC / 1 A
Alarm system:
(electrode / valves)
Contact, potential free; switching power 24 V DC / 1 A
Output signal: 4-20 mA (max. 250 Ohm)
0...16% (% of raw water 100%); resolution 1% (1% = 1 mA)
Electrode check up: Self diagnostic with alarm for low efficiency
Electrode time life:: 6 to 12 months
 Water hardness analyzer - Bamosoft Control System