Gill GMX100 User Manual page 63

Gill Instruments Ltd
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Temperature
Temperature Sensor:
Temperature Units:
Dew Point Sensor:
Dew Point Units:
Pressure
Pressure Sensor:
Pressure Units:
Height Above Sea Level:
Height Above Station:
The user can set the HASL figure together with the HASTN figure to allow pressure at sea level to be
calculated.
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MaxiMet
Doc. No. 1957-PS-021
ON or OFF
C, K or F (Centigrade, Kelvin, Fahrenheit)
ON or OFF
C, K or F
ON or OFF
HPA, MB, MMHG, INHG
(Hectopascals, Millibars, Millimetres Mercury, Inches Mercury).
+00000.00 (0 to 10000 metres)
Elevation (on the ground) of the unit relative to the average sea level
point.
Atmospheric pressure varies with height above sea level as well as with
atmospheric conditions. As the altitude at which the pressure sensor
operates is usually constant (the station height), a correction is made to
make the reading of the pressure sensor seem as if it were made at sea
level. This means that the pressure reading has to be slightly increased
from the value read by the MaxiMet sensor situated above sea level
(often known as the station pressure).
+00000.00 (-100 to +100 Metres)
Page 63 Issue 3
May 2018