Vaisala HMP260 SERIES Manuel de service télécharger pdf (Page 49)

HMP260 SERIES

HMP260-U017en-1.5 Operating Manual

1997-11-25 43

• Press any key and enter the second point value and press <cr>.

RH : xx.x Ref2 ? yy.y <cr>

•

The stabilization of the sensor can be monitored by entering c <cr>

instead of the reference value.

6.1.3.2 Using display commands

Disconnect the security lock jumper!

• Leave the calibrator and the transmitter for at least 4 hours in the

same space so that their temperatures have time to equalize. Remove

the filter cap on the transmitter.

• Place the sensor head into the calibration hole of the LiCl bottle in the

humidity calibrator.

• Wait for 10 minutes.

• Select Cali in the main menu and then RH cal; select Sensor

changed. Change the first point reading with the arrow keys and

press ENT.

• Place the sensor head into the calibration hole of the NaCl bottle in

the humidity calibrator.

• Wait for 10 minutes.

• If necessary, change the second point reading with the arrow keys and

press ENT.

6.1.3.3 Using LED commands

Disconnect the security lock jumper!

• Leave the calibrator and the transmitter for at least 4 hours in the

same space so that their temperatures have time to equalize. Remove

the filter cap on the transmitter.

• Place the sensor head into the calibration hole of the LiCl bottle in the

humidity calibrator.

• Wait for 10 minutes.

• Connect an ammeter/voltmeter to the analogue outputs (connector

X2). Give command l¡¡¡. At the first calibration point the LED

on the left flashes; adjust the first point with the arrow switches to the

value given in the calibration table (Chapter 6.1.4) and press ENT

switch.

• Place the sensor head into the calibration hole of the NaCl bottle in

the humidity calibrator.

• Wait for 10 minutes.

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Vaisala HMP260 SERIES Manuel de service Page 49