RLV 01 Reference air supply for Oxygen probes


Complete unit for supplying an oxygen probe with reference air and purge air – fully assembled in a control box


  • Regulation of the reference air volume and the purge air volume for an oxygen probe by means of stepless modulation of the pumps
  • Generation, storage and display of fault signals in the event of a deviation from the specified target values ​​for reference air volume and purge air volume
  • Detection of a loosened reference air connection on the probe
    By regulating the flow rates and recognizing a decrease in pump output, the use of commercially available, inexpensive pumps is possible without risk.
  • Separate pumps for reference air and purge air prevent measurement errors due to a leaky purge air valve.
  • Network interface with Modbus / TCP protocol for providing all setpoints, measured values ​​and fault signals to a higher-level system, with MQTT protocol for integration in IIOT environments and web server for easy configuration and visualization.
  • Complete recording and documentation of reference air volume and purge air volume possible (CQI9)
  • Generation, Storage and display of malfunction reports such as Setpoint deviation (CQI9)
  • Early detection for pump replacement or maintenance
  • Cost savings through the use of commercially available, inexpensive pumps
  • Supply with 230V AC max. 250 mA
About us

Products and services related to measurement, control and regulation technology as well as process control software for the heat treatment industry


Address: Gmuender Straße 23, D-73072 Donzdorf

Phone: +49 7162 2270 520

Fax: +49 7162 2270 528

Email: info@millivolt.de



Millivolt GmbH: Gmuender Straße 23, 73072 Donzdorf

Click to open a larger map