The Model 420 consists of an OxyGuard Standard probe with "built-on" 2-wire 4-20mA transmitter. A calibration screw in the side permits the 4-20 mA to be calibrated to correspond to the desired range of oxygen concentration.

The Model 420 is ideal for use wherever a single oxygen measurement without local display is wanted, or where oxygen measurements are to be incorporated in or added to "non-OxyGuard" computer or PLC systems.

A special version is available that includes a temperature sensor with its own 4-20 mA transmitter. Please Contact OxyGuard for further information of this, and click on the link to download the Brochure for the Model 420.