Vaisala HydroMet User's Guide download pdf (Page 77)

Chapter 3 _______________________________________________________ AWS Client Software

VAISALA_______________________________________________________________________ 75

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Figure 38 Manual Calibration Window

4. Enter the new value for the offset in the Offset field and the new

value for the calibration factor (gain) in the Factor field. If you do

not want to change either the offset or the gain, leave that field

unchanged.

The 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 the QML

logger, enter the sensor-dependent sensitivity factor

[V/Wm

-2

], which is given in the type sticker or calibration sheet of

the particular sensor. To calibrate other listed sensors, enter the

gain of the measurement, that is, the slope of the conversion curve.

5. Calibrate the sensor by selecting Calibrate.

NOTE

The values you have changed in the Manual Calibration window but

have not yet sent to the QML logger by selecting Calibrate are

displayed in bold. You can obtain the current Offset and Factor values

again from the QML logger by selecting the Refresh button.

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Vaisala HydroMet User's Guide Page 77