Vaisala HMP243 Guida Utente Scaricare il pdf (Pagina 53)

HMP240 series

M210300en User's Guide

6.2.1 One point offset calibration

6.2.1.1 With serial commands

• Leave the reference instrument and the transmitter for at

least 4 hours in the same space so that their temperatures

have time to equalize. Remove the filter cap prior to

calibration.

Disconnect the security lock jumper!

• Check the transmitter against the reference.

• After giving the correct temperature value (Ref1) and

pressing <cr>, press any key and then <cr>.

6.2.1.2 With display / keypad commands

• Leave the reference instrument and the transmitter for at

least 4 hours in the same space so that their temperatures

have time to equalize. Remove the filter cap prior to

calibration.

Disconnect the security lock jumper!

• Check the transmitter against the reference.

• Select T 1 point cal (or Ta 1 point cal), change the

reading to correspond to the reference and press ENT.

6.2.1.3 With LED commands

• Leave the reference instrument and the transmitter for at

least 4 hours in the same space so that their temperatures

have time to equalize. Remove the filter cap prior to

calibration.

Disconnect the security lock jumper!

• Check the transmitter against the reference.

• After adjusting the offset point and pressing ENT, the sec-

ond LED from left flashes. Press ENT without changing

the output value.

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Vaisala HMP243 Guida Utente Pagina 53