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Main menu Input
for control unit
Measurement menu
Select "Input"
Activate "Parameter"
Select "Pres."
Select "Absolute"
58
P
RESSURE
Note
The absolute pressure is determined in the measuring
procedure depicted to the side. The absolute pressure
results from
• Altitude pressure (metres above sea level)
This has an annual average at sea level of 1013 mbar. The
higher the location is above sea level, the lower the
pressure.
• Barometric pressure
This has an annual average independent of the altitude
1013 mbar. This pressure can fluctuate from the annual
average by approx. ±20 mbar depending on the weather
(see local barometer display).
• Differential pressure
This is the higher or lower pressure in the duct.
The entry of the absolute pressure (in hPa only; it is
impossible to switch to other units) has an effect on the
pressure-dependent measurement values. These are
automatically compensated by the pressure: for humidity
(g/kg, J/g), CO2 and in all thermal probes!
Enter the pressure as a parameter:
1 Connect probe, switch on control unit.
2 Change to the main menu with key
3 From Main menu – Input – Parameter – select Absolute
pressure menu.
4 Accept the current reading with key
"Input absolute pressure" with the cursor keys.
5 With function key
to the menu "Input density" or with key
measurement menu.
or
Enter the absolute
pressure
, an automatic branch is made
E E n n d d
Current reading
comes into effect
.
or select
, back to the
E E n n d d
Menu: Set
density value
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