Vaisala HMP243 Guida Utente Scaricare il pdf (Pagina 48)

HMP240

User's Guide M210300en

• Insert the sensor head into the measurement hole of the

LiCl chamber.

• Wait at least 10 minutes for the reading to stabilize.

• Give command CRH <cr>, enter the first point value and

press <cr>.

>CRH <cr>

RH : xx.x Ref1 ? yy.y <cr>

Press any key when ready...

• If you want to see how the sensor stabilizes to the humid-

ity in the calibrator, enter c <cr>:

RH : 11.9 Ref1 ? c <cr>

RH : 11.5 Ref1 ? c <cr>

RH : 11.5 Ref1 ? 11.3 <cr>

Press any key when ready...

• Insert the sensor head into the measurement hole of the

NaCl chamber.

• Wait at least 20 minutes for the reading to stabilize.

• Press any key, 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>.

6.1.2.2 With display / keypad commands

• 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.

Disconnect the security lock jumper!

• Insert the sensor head into the measurement hole of the

LiCl chamber.

• Wait at least 20 minutes for the reading to stabilize.

• Select Cali in the main menu and then RH cal; select Not

changed and then two-point calibration RH 2 point cal.

Change the first point reading with the arrow keys to cor-

respond to the reference humidity and press ENT; pressing

an arrow once changes the reading by 0.05 %RH.

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Vaisala HMP243 Guida Utente Pagina 48