Vaisala HMP260 SERIES Instrukcja Obsługi Pobierz pdf (Strona 54)

HMP260 SERIES

Operating Manual HMP260-U017en-1.5

48 1997-11-25

6.3 Calibration of analogue outputs

The analogue outputs have been calibrated at the factory and since they are

very stable, calibration of the outputs should be performed only when there is

reason to believe that their adjustments have changed.

6.3.1 Using serial commands

Disconnect the security lock jumper!

ACAL <cr>

The outputs on channels 1 and 2 are measured and the measured values (mA

or V) entered as calibration coefficients.

Example: both channels have 0...10 V outputs (set with AMODE command);

enter the voltages measured at the analogue outputs:

>ACAL <cr>

Ch1 U1 ( V ) ? 0.123 <cr>

Ch1 U2 ( V ) ? 9.98 <cr>

Ch2 U1 ( V ) ? 0.120 <cr>

Ch2 U2 ( V ) ? 9.98 <cr>

6.3.2 Using display/keypad commands

Disconnect the security lock jumper!

• Connect an ammeter/voltmeter to the output of channel 1, select Cali

in the main menu and Analog outputs in the Cali menu. The follow-

ing is displayed (the quantity can be either mA or V):

• Enter the measured lower end current/voltage on channel 1.

• Enter the measured upper end current/voltage on channel 1.

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Vaisala HMP260 SERIES Instrukcja Obsługi Strona 54