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HMP80 Series User Guide
7.4 Adjusting measurement with Insight software
• Computer with a Microsoft Windowsâ operating system (64-bit version) and
Vaisala Insight PC software installed
• Indigo USB adapter (item code USB2) or USB connection cable (item code
242659)
• Reference environment(s) for producing the desired humidity and/or
temperature
This procedure can be used to adjust the probe's humidity or temperature measurement. If you
want to adjust both, repeat the procedure.
Because stabilization of temperature and humidity takes time, you should expect the
adjustment procedure to take at least 30 minutes for each adjustment point.
1. Connect the probe to the Insight software.
2. If you intend to adjust humidity measurement, first select
sensor purge to condition the sensor. Wait a few minutes for purge to complete.
3. Select
> Calibrate > Yes to switch the probe to calibration mode.
In calibration mode, the device will not use functions that may interfere with calibration
and adjustment.
4. Select the type of adjustment to perform: RH adjustment or T adjustment.
5. Define the needed adjustment for the first measurement point:
a. Insert the probe head in the reference environment for the first calibration point.
b. Wait for the measurement to stabilize fully. This may take more than 30 minutes.
Monitor the readings to see when both the RH and temperature measurements have
stabilized.
c. Click the Reference value, point 1 text box and enter the reference value of the
calibration point. Press ENTER or click outside the text box when done.
d. The probe automatically enters the measured values for the calibration point.
6. If you want to adjust in more than one point, repeat the previous step for all desired
calibration points.
You can adjust humidity measurement in up to five points when Insight is set
to Advanced mode.
7. Check the difference between each reference and measured value. Very large differences
may be due to insufficient stabilization time or unsuitable calibration setup.
• To save the adjustment into the device, select Activate adjustment.
• To exit without taking the adjustment in use, select Close.
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> Sensor purge to perform
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