Replacing Sensors; Recalibrating/Adjusting Sensors - TESTO 320 Instruction Manual

7 Maintaining the product
7.4.

Replacing sensors

✓ The measuring instrument must be switched off.
1. Place the measuring instrument on its front.
2. Unscrew, lift up and remove the service cover.
3. Disconnect the hose connections from the faulty sensor/bridge.
4. Remove the faulty sensor/bridge from the slot.
5. Install new sensor / new bridge in the slot.
6. Push the hose connections on to the sensor/bridge.
7. Refit and close the service cover.
7.5.

Recalibrating/adjusting sensors

See Recalibration/adjustment, page 40.
60
After replacing an O2 sensor, wait for an equalisation
period of 60 min to elapse before using the instrument
again.
When retrofitting a sensor, the associated measurement
parameter and unit must be enabled, see Sensor settings,
page 39.