Vaisala HMP243 Guide de l'utilisateur télécharger pdf (Page 46)

HMP240

User's Guide M210300en

6.1.1.1 With serial commands

• Make sure that the sensors of the transmitter and the

reference instrument are close to each other. Allow enough

time for the sensor heads to stabilize to the measurement

conditions

Disconnect the security lock jumper!

• Give command CRH <cr>, enter the humidity 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 refer-

ence humidity, enter c <cr> instead of the first reference:

RH : 11.9 Ref1 ? c <cr>

RH : 11.5 Ref1 ? c <cr>

RH : 11.5 Ref1 ? 11.3 <cr>

Press any key when ready...

• Press any key and <cr> when the transmitter requests the

second point value.

RH : yy.y Ref2 ? <cr>

6.1.1.2 With display / keypad commands

• Make sure that the sensors of the transmitter and the

reference instrument are close to each other. Allow enough

time for the sensor heads to stabilize to the measurement

conditions

Disconnect the security lock jumper!

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

changed and then one-point offset correction RH 1 point

cal. Change the humidity reading with the arrow keys to

correspond to the reference value and acknowledge it with

ENT; pressing an arrow once changes the reading by 0.05

%RH.

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Vaisala HMP243 Guide de l'utilisateur Page 46