Vaisala WMS302 Guia do Utilizador descarregar pdf (Página 132)

User's Guide ______________________________________________________________________

130 __________________________________________________________________M210630EN-B

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 in bold font. You can not change the

cells with the value N/A. Table 15 on page 130 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 a 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 its

measurement channel 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 16 on

page 132.

Table 15 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.

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