A reference probe and a display device for viewing the reference measurement. Vaisala recommends using a Vaisala HPP270 series probe that
has recently been factory-calibrated.
An H2O2 vapor chamber that can produce a stable H2O2 vapor concentration level and where you
can install your probe and the reference probe at the same time in such a location that their readings are comparable.
Install your probe and the reference probe in the calibration environment. Make sure
their installation location is such that the probes' readings are comparable, that is, the
environment is identical for both probes.
Connect the probe you are adjusting to the Indigo transmitter, and then connect the
Indigo transmitter to Insight PC software.Wait until Insight detects the probe.
Perform a sensor purge, or wait for the start-up purge to finish.
To open the Insight PC software calibration menu, select to access
Insight main menu. In the main menu, select Calibrate > Yes.
Open the H₂O₂ adjustment tab.
CAUTION It is very important
to select H2O2 as the calibration mode. If you leave the probe in
the
RH calibration mode (default mode),
the sensor heating is switched off and the sensor will not withstand exposure to
H2O2 vapor.
Remove any possible previous adjustments by selecting Restore factory adjustment.
Wait until the ambient H2O2 concentration has reached the desired calibration and adjustment level. Monitor the H2O2 readings of both probes
and allow the measurements to stabilize fully.
When the measurements have stabilized, check the H2O2
concentration reading of the reference instrument. Enter the value of the reference into
the Reference value, point 1 field.
The probe automatically enters the
measured value for the calibration point.
Select Activate adjustment to store the adjustment in the probe.
