Sensor purge is a 4-minute process where the sensors are heated to remove possible contamination. The purge is essential for the long-term performance and accuracy of the probe in demanding H2O2 environments. During the purge, H2O2 and H2O measurements are not available.
The purge is automatically performed:
- At probe start-up.
- After an RH for H2O2 adjustment is made.
- At intervals (default 24 hours, configurable between 1 hour ... 1 week using Vaisala Insight software, Modbus, or Indigo transmitters). Purge is postponed by 30 minutes if H2O2 is present or ambient humidity is not steady.
| If required, you can also enable purge during H2O2 exposure with the Insight PC software or an Indigo transmitter. |
Purge is recommended at least every 24 hours of powered-on time, even if the probe has not been continuously exposed to H2O2.
Optional: if needed, you can also trigger a purge at any time with Vaisala Insight software, Modbus (in digital mode) or pin #5 on the M12 connector (in analog mode).