Vaisala HMP240 - Manual (Page 35)

HMP240 series
M210300en User's Guide
33
5.3.7 Others
5.3.7.1 Setting the averaging time
Disconnect the security lock jumper!
With command FILT the transmitter can be given the averaging time during
which the individual measurement samples are integrated to get an averaged
reading. The time can be set in seconds within the range of 0 - 1024 (0 = no
averaging time).
• Select More in the main menu, select More in the More menu and
select Filt in the second More menu:
• Pressing ENT returns the programme to the main menu without
changing the filtration time.
• If the filtration time needs to be changed, press CL; enter the new
filtration time with the arrow keys.
5.3.7.2 Setting the pressure for mixing ratio and wet bulb
calculations
The atmospheric pressure has an effect on mixing ratio and wet bulb. Accurate
calculations can be achieved only when the ambient pressure is taken into
consideration.
• Select More in the main menu:
• Select Pressure:
• Pressing ENT returns the programme to the main menu without
changing the pressure reading.
• If the pressure needs to be changed, press CL; enter the new pressure
with the arrow keys