Sending HMP155 for calibration - AWS810

Once a year, or if the sensor readings seem inaccurate, send HMP155 to Vaisala for calibration. Replace it with a calibrated spare probe if available, or wait until Vaisala sends the probe back from calibration.

1. Remove the probe from inside the radiation shield.
2. Send the probe to Vaisala for calibration.
3. Check the operation of the calibrated probe.
4. Place the calibrated probe inside the radiation shield.