Vaisala DMP248 Manual de Serviço descarregar pdf (Página 50)

OPERATING MANUAL_______________________________________________________________

44 _____________________________________________________________________ U263EN-1.4

• press CL

• the number starts flashing

• if the interval needs to be changed, press CL again and enter the

new interval; otherwise press ENT

• the unit (s, min, h) starts flashing

• the unit can be changed with the arrow keys and acknowledged

with ENT

• after this the programme returns to Mode menu

Others

Pressure compensation

The pressure is used for pressure compensation of the DRYCAP



sensor in order to ensure the best possible measurement accuracy. If

the process pressure differs from normal ambient pressure, the value

has to be entered in the transmitter memory. The pressure also has a

considerable effect on the ppm

value. The pressure to be entered is

the absolute pressure in hPa (for converting pressure units, see

Appendix 8).

• Select 3UHV in the main menu and the following appears:

• 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

NOTE

The pressure compensation takes place only with the security lock

umper connected. If the security lock jumper is not connected, the

pressure compensation is performed with the value 1013.25 hPa.

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Vaisala DMP248 Manual de Serviço Página 50