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Product code: 30802001
The KNX Sensor / Controller Galvanic isolated instrumentation amplifier and bus couple unit for measurement and control of the water quality indicators, pH and ORP. For monitoring and control of the water quality in aquariums, swimming pools, ponds and service water systems. For indoor / outdoor and damp room applications. There are an optional input for a temperature sensor ( PT1000 ) and two potential-free contact inputs.
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  • Measured data pH-Wert und ORP (redox potential)
  • Two-position controller with switching and pulsed 1 Bit output for pH and ORP
  • Pulsed controller output for chemical and fresh water input
  • PI controller with static 8 Bit or pulse-width modulated 1 Bit output for pH and ORP
  • Measured Value can be periodically displayed or when value changes
  • Adjustable periodic sending of control variable
  • All controllers with release and lock function
  • Threshold alarm for upper and lower thresholds
  • Auxiliary quantity for changing the set point or threshold via the bus
  • Calibration of the sensors (1 point and 2 point calibration)
  • Reset to factory settings available
  • Operating time counter with threshold and reset
  • Additional inputs for one Temperature sensor and two dry contacts

Technical Details


  • Bus Voltage: KNX Bus 21...30VDC
  • Bus Current Consumption: 10mA
  • Measurement: pH, ORP
  • Accuracy: pH: +/- 0.1
  • Resolution: pH: +/- 0.01
  • Accuracy: OPR: +/- 10mV
  • Resolution: OPR: +/- 1mV
  • Accuracy: water temperature: +/- 1 C
  • Resolution: water temperature: +/- 0.01 C
  • Electrode Set: Single-rod measuring cell, gel-filled, low-maintenance for standard applications pH: HI2114P-2 ORP: HI3214P-2
  • Electrode Cable 2m with BNC plug
  • Inputs: 2 x Potential Free



Technology KNX
Mounting Surface
Inputs 2
Operating voltage KNX Bus (29VDC)
IP rating IP65

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