Chapter 5 calibration and adjustment, Calibration interval, Factory calibration and adjustment – Vaisala GMP343 User Manual
Page 63: Chapter 5, Calibration and adjustment
Chapter 5 __________________________________________________ Calibration and Adjustment
VAISALA_______________________________________________________________________ 61
CHAPTER 5
CALIBRATION AND ADJUSTMENT
This chapter contains information for performing the calibration and
adjustment of the GMP343.
In this user's guide the term calibration means comparing the transmitter's
reading to a reference concentration. Adjustment, which is usually done
after calibration, the reading of the transmitter is changed to correspond to
the reference concentration. After adjustment, the original calibration
certificate shipped with the product is not valid anymore.
The GMP343 can be sent to Vaisala for calibration, or be calibrated by the
user.
Calibration Interval
GMP343 is calibrated as shipped from the factory. The recommended
calibration interval is one year. The operating conditions affect the long-
term stability. For more information, see sections
(long-term stability). In a harsh
operating environment it is recommended to check readings more often
than in an easy environment.
Factory Calibration and Adjustment
You can send the device to Vaisala Service Center for calibration and
adjustment. For more information, see