Vaisala HMP260 SERIES Instrukcja Obsługi Pobierz pdf (Strona 72)

HMP260 SERIES

HMP260-U017en-1.5 Appendix 1: Serial commands

FCRH Relative humidity calibration after sensor change

Disconnect the security lock jumper!

FCRH <cr>

After humidity sensor change the transmitter must be calibrated using this command and

the calibration must be done at two reference points. The calibration is performed as

follows:

FCRH <cr>

RH : 1.90 Ref1 ? 11.3 <cr>

Press any key when ready ...

RH : 76.30 Ref2 ? 74.9 <cr>

The command can also be divided into two commands, so the computer can be used

for other purposes while waiting for the sensor to stabilize to the higher humidity.

FCRH 1 <cr>

RH : 1.90 Ref1 ? 11.3 <cr>

FCRH 2 <cr> ...

RH : 76.30 Ref2 ? 74.9 <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:

FCRH <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>

CT Temperature calibration

Disconnect the security lock jumper!

CT <cr>

With this command the transmitters can be calibrated against an accurate reference,

such as a Pt 100 simulator. A two-point calibration is performed as follows:

CT <cr>

T : 0.80 Ref1 ? 0.0 <cr>

Press any key when ready ...

T : 56.20 Ref2 ? 55.0 <cr>

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 117 118

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Vaisala HMP260 SERIES Instrukcja Obsługi Strona 72