Dissolved Oxygen Smart Sensor

The Model 32 is a solid state DO sensor with built-in smarts which outputs to Modbus RTU through RS232 hardware.


  • Combines advanced electronics with a solid-state optical sensor
  • Does not consume oxygen like all standard membrane sensors
  • No membranes. DO is measured by fluorescence and does not require frequent calibration, or have consumables like membranes or caps to be changed
  • Very reliable, and stable calibration
  • Anti-fouling copper ring option available
  • Modbus RTU via RS232 hardware

I’m glad we got onto these, they’re great sensors, the M32 we have deployed is running like clockwork.”  Lia –  Hydrographer. VIC.