Redox probe with controller M 1322

Measuring range: from -2000 to +2000 mV

  • Online Redox measurement
  • PI regulation option
  • Communication output (SELECAN) or galvanically separated current output
  • IP 65 housing


Redox measurement is used in chemical industry, in swimming-pools, potable and waste water treatment and also in different kinds of industrial measurements.

 Controlmatik probe M 1322  is designed for continuous measurement of Redox. With special versions of measuring electrodes it can also be used for measurement of other media. 

The unit consists of :

Redox measuring electrode

Controller with graphic display 

Electronics evaluates and amplifies the measured potential. PI regulator that independently controls a certain process, can be build in a probe. The probe can be equipped with the galvanic separated 4–20 mA signal on the amplifiers output. The user can easily communicate with a probe over graphic display and four function keys. 

The probe  guarantees accurate and continuous measurement.

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General data:

Ambient temperature: -10...+50ºC

Relative humidity: 10...95 % non-condensating

Control unit protection: IP 65

Dimensions: 98 x 64 x 38

Weight: 0,2 kg


Redox measurement

Max. Measuring range (MR): from –2000 to +2000 mV

Measured value resolution: 1 mV

Deviation of indication, measured value: maximum 0,2% of M.R.

Redox input signal:

- Input resistance at nominal operating conditions > 1000 MOhm

- Current input at nominal operating conditions  <  1 pA



Electrical data:

Power supply: 9 - 36 VDC,12 - 24 VAC±10%

Power: 2 W 


Current output connector:

Modules: 2 (galvanic separated)

Isolation voltage: 500V

Current range: 4...20 mA

Power supply: 9...26 VDC

Output range: adjustable to (MR)

Output Mode options:
- Redox signal output
- Regulator output

Regulator connector:

Regulator 3 point switch or PI regulator

Outputs: 3 x 24 VAC / 250 mA

Inputs: 3 x 24 VAC

Mode options:
- Motor Control
- Pump Control