Vaisala HMP260 SERIES Instrukcja Obsługi Pobierz pdf (Strona 71)

HMP260 SERIES

Appendix 1: Serial commands HMP260-U017en-1.5

2 CALIBRATION COMMANDS

CRH Relative humidity calibration

Disconnect the security lock jumper!

CRH <cr>

With this command the transmitters can be calibrated against a reference. A one-point

calibration can be done against an accurate transfer standard in the field and a two-point

calibration using saturated salt solutions in controlled conditions. A two-point calibration

is performed as follows:

CRH <cr>

RH : 12.00 Ref1 ? 11.3 <cr>

Press any key when ready ...

RH : 76.00 Ref2 ? 75.5 <cr>

In one-point offset correction, the Ref2 prompt is acknowledged with <cr>:

CRH <cr>

RH : 12.80 Ref1 ? 11.3 <cr>

Press any key when ready ...

RH : 75.50 Ref2 ? <cr>

If the stabilization of the sensor to the humidity in the calibrator needs to be monitored,

the measurement output can be repeated by giving command c<cr> at Ref1 and Ref2:

CRH <cr>

RH : 12.00 Ref1 ? c <cr>

RH : 11.70 Ref1 ? c <cr>

RH : 11.50 Ref1 ? 11.3 <cr>

Press any key when ready ...

RH : 76.00 Ref2 ? 75.5 <cr>

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 117 118

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Vaisala HMP260 SERIES Instrukcja Obsługi Strona 71