Vaisala HMP228 User Manual

Page 77

HMP228

M210282en-A

Appendix 2: Display commands

1.1.3

Others

1.1.3.1

Setting the measurement integration time

By lengthening the measurement integration time any stray changes in the
output can be filtered out: the transmitter calculates the average of a number
of measurement cycles defined by the user.

•

Select More in the main menu, select More in the More menu and
select Mtim in the second More menu:

•

Pressing ENT returns the programme to the main menu without
changing the integration time.

•

If the integration time needs to be changed, press CL; enter the new
integration time with the arrow keys (4...255)

1.1.3.2

Setting the pressure for mixing ratio calculations

The atmospheric pressure has an effect on mixing ratio. Therefore 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