Vaisala HUMICAP HMP155, Руководство пользователя, Страница: 71 / 102

9. Using the - and + buttons, make the temperature offset adjustment by making sure the
A
out
voltage is correct and press the ADJ button. Red indicator LED turns off and back.
If you do not wish to perform the two-point temperature adjustment now,
press the ADJ button one more time so that the red indicator LED turns off.
After reset, HMP155 exits the adjustment mode. Otherwise, continue with the
next step.
10. Insert the probe into another reference temperature.
Do not touch the adjustment buttons before the conditions have stabilized.
11. Using the - and + buttons, make the temperature gain adjustment by making sure the A
out
voltage is correct.
12. Press the ADJ button and the red indicator LED turns off.
6.2.2 Performing one-point humidity and temperature
adjustment
1. To perform one-point humidity or temperature adjustment, carry out the chemical purge
(if available).
See Chemical purge option (page 14) .
2. Uncover the adjustment buttons on the probe by removing the protective cover and
removing the calibration seal.
3. Open the protective plug and you can see three buttons marked - ,
□
and + . There is also a
two-colored indicator LED. See Figure 12 (page 67) .
4. Remove the filter and insert the probe into a measurement hole of the salt chamber to do
the humidity adjustment.
5. Press the ADJ button and hold it down until the green indicator LED lights up. This puts
HMP155 in the adjustment mode.
Do not touch the adjustment buttons before the conditions have stabilized.
6. Using the - and + buttons, make sure the Aout voltage is correct and press the ADJ
button.
Green indicator LED turns off and back on.
7. To move on to the temperature adjustment, press the ADJ button once and the red
indicator LED lights up.
Chapter 6 – Calibration and adjustment
69