
USER'S GUIDE____________________________________________________________________
134 _________________________________________________________________ M210762EN-D
5. Wait at least 30 minutes for the sensor to stabilize. Follow the
stabilization from the GRAPH display. Press EXIT to return to the
previous display.
6. Press READY when stabilized. Enter the reference value by using
the arrow keys.
0706-019B
Figure 68 Waiting for Readings to Stabilize
Now proceed to the adjustment at the wet end reference condition
(30 ... 75 %RH) and carry out the procedure as described in the
previous items.
7. Answer YES to confirm the adjustment. Press OK to return to the
adjustment menu.
8. Before closing the adjustment mode, feed the adjustment
information into the device, see section Adjustment Information on
page 132. Press EXIT to close the adjustment mode and return to
the basic display.
Using Serial Line
NOTE
Reference humidities must be ~0 %RH and 30 ... 75 %RH. A suitable
product for the two point RH calibration is for example the Vaisala
Humidity Calibrator HMK15.
1. Connect the DMT345/346 to a PC. See section Serial Line
Communication on page 72. Open a terminal program.
2. Carry out the chemical purge.
3. Press the ADJ button.
4. Remove the filter from the probe and insert the probe in the dry end
reference conditions (~0 %RH).
5. Issue the FCRH command and press Enter.
FCRH
6. Wait at least 30 minutes for the sensor to stabilize.
7. Press Enter a few times to check if the reading is stabilized.
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