User`s guide

Chapter 3 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 97
The list in the Sensor Calibration tab does not refresh automatically.
To read the latest measurement values, click the Refresh button. You
may enter new values to the cells that have bold font. You can not
change the cells with N/A. Table 13 on page 97 describes the columns
in the Sensor Calibration tab.
Calibration is done by entering the sensor specific Value and/or Cal.
Factor parameters.
- The Value parameter affects the offset of the measurement.
Entering the new value changes the sensor reading to the given
value and the new offset for the measurement is set.
- The Cal. Factor parameter has sensor dependent use. It affects the
gain of the measurement or the sensitivity of the radiation sensors.
To calibrate radiation sensors QMN10x and QMS10x with
MAWS, enter the sensor dependent sensitivity factor [V/Wm-2],
which is given in the type sticker or calibration sheet of the
NOTE
When Value is expressed as N/A, it indicates that the calibration factor
has been altered but not saved, the sensor has not been measured or the
measurement channel of it has failed, or the sensor is disabled. Further
information about the possible reason can be obtained by comparing
the value in the Status column against the values listed in Table 14 on
page 99.
Table 13 Columns in the Sensor Calibration Tab
Column Description Input
Sensor The sensor name as
defined in the setup.
n/a
Channel The measurement channel
of the sensor.
n/a
ID The measurement identifier n/a
Status The sensor status n/a
Value The last measured sensor
reading shown in physical
units.
Overwrites the sensor reading
with the entered value, that is,
changes the offset of the
measurement.
Cal.Factor The measurement gain for
the sensors, except for the
radiation sensors (QMN10x
and QMS10x) the
sensitivity value.
Overwrites the old gain value
with the new one. For radiation
sensors (QMN10x and
QMS10x) changes the
sensitivity value.