Vaisala HUMICAP MMT162 Guide de l'utilisateur télécharger pdf (Page 57)

Chapter 6 ___________________________________________________ Calibration and Adjustment

VAISALA ________________________________________________________________________ 55

Adjustment Points

Humidity Measurement

You can adjust the humidity measurement of the MMT162 in one or two

points:

- One-point adjustment changes the RH measurement offset or gain.

The transmitter determines which coefficient (offset or gain) should

be changed based on the measured humidity.

- Two-point adjustment changes both offset and gain. The following

requirements apply to the two points:

- The adjustment must be started from the dry end of the

measurement, with the point being < 50 %RH.

- The second point must be > 50 %RH.

- There must be at least 30 %RH difference between the points.

Temperature Measurement

You can adjust the temperature measurement of the MMT162 in one or

two points:

- One-point adjustment changes the T measurement offset.

- Two-point adjustment changes both offset and gain. The following

requirements apply to the two points:

- The adjustment must be started from the cool end of the

measurement.

- The second point must be at least 30 °C warmer than the first

point.

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Vaisala HUMICAP MMT162 Guide de l'utilisateur Page 57