
USER'S GUIDE____________________________________________________________________
136 _________________________________________________________________ M210762EN-D
One-Point Dewpoint Adjustment
One-Point Dewpoint Adjustment Using
Display/Keypad
NOTE
This is a highly critical adjustment, to be performed only in laboratory
conditions.
Preferably use the display/keypad interface to perform one-point
dewpoint T
d/f
adjustment. Before proceeding with the Td/f adjustment
you must perform the RH adjustment. For DMT345/346, the reference
dewpoint must be below -25 °C (-13 °F) and temperature must be below
40 °C (104 °F).
NOTE
This adjustment is valid only if the measurement or process is in the
lower end of the measurement range (in very dry). See Specifications on
page 142.
When adjusting the dewpoint, refer to the following instructions:
1. Press the ADJ button on the motherboard to open the
ADJUSTMENT MENU.
2. Press the ► arrow button to select Adjust T
d
measurement.
3. Select by pressing 1-point T
d
adjustment. Press START to start
adjusting.
4. Leave the sensor to stabilize for at least one (1) hour. Follow the
instructions on the display.
0706-043
Figure 69 Following Stabilization
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