Vaisala HMT310 - Manual (Page 69)

Chapter 6 ___________________________________________________ Calibration and Adjustment
VAISALA ________________________________________________________________________ 69
CHAPTER 6
CALIBRATION AND ADJUSTMENT
This chapter describes the relative humidity and temperature adjustment
procedures. Note that after adjustment, the original calibration certificate
shipped with the product is not valid anymore.
Vaisala recommends using the calibration services offered by Vaisala.
Vaisala Service Centers perform calibrations and adjustments as well as
repair and spare part services, and offer accredited calibrations and
maintenance contracts.
Calibration services can also be ordered online at http://store.vaisala.com .
CAUTION If you think the HMT310 is not measuring correctly, calibration and
adjustment is not the first thing to do. Try the following first:
- Make sure nothing is interfering with the measurement: heat sources.
temperature differences, or condensation
- Check that there is no moisture on the probe. If the sensor has become
wet, you must allow it to dry before you can measure.
- Always wait for the measurement to stabilize.
NOTE For an introduction to calibration, order or download the free calibration
book from Vaisala at the following address:
www.vaisala.com/calibrationbook