Adjusting dewpoint td/f, Adjusting dewpoint t, Figure 81 – Vaisala DMT340 User Manual
Page 158: Starting the adjustment, Figure 82, Performing purge
User's Guide _______________________________________________________________________
156 __________________________________________________________________ M210704EN-G
Adjusting Dewpoint T
d/f
Before adjusting dewpoint, first carry out the two-point relative humidity
adjustment, which will ensure the basic adjustment level. After that,
continue with the actual T
d/f
adjustment.
Two-Point Relative Humidity Adjustment
using Display/Keypad
For DMT340 M-sensor, the humidity references of 0 % (for example
Nitrogen) and 10 ... 20 % are required.
NOTE
For the DMT340 M-sensor both reference humidities must be below
20 %RH.
To make the adjustment, follow the instructions below. Use preferably
the display keypad and let the display information guide you through the
two-point RH adjustment process.
1.
Press the Adjustment button ADJ on the motherboard inside the
transmitter to enable adjustments.
2.
Select Adjust Td measurement
, press the ►arrow button.
3.
Select 2-point RH adjustment, press Start. Press OK to perform
purge of point 1.
0706-018
Figure 81
Starting the Adjustment
0706-019
Figure 82
Performing Purge