COSA Xentaur Xentaur LPDT - Manual (Page 34)

Section 3: Instrument
page 27
f. Observe the display, if the buttons are not being
pressed; the display will every few seconds show for a
short duration the dewpoint as being computed at the
moment (utilizing the current cal-adjust value in the
computation).
g. Use the UP or DOWN buttons to modify the cal-
adjust value and observe the alternately displayed dew-
point. Perform this adjustment until the dewpoint
matches the value shown by the reference instrument.
h. Press the MODE button to go to the next mode, this
will save the new cal-adjust value, and it will be retained
even if power is turned off.
② Entering a known Adjustment Value: If the sensor is
being replaced an adjustment value should be supplied
with the sensor, to enter it into the instrument:
a. Go to the
&$/$'- mode and press the UP button, the
display will show the current value, in the range of -1.99
to +1.99 followed by blinking horizontal lines, ignore
the alternately displayed dewpoint.
b. Use the UP or DOWN buttons to modify the cal-
adjust value as necessary.
c. Press the MODE button to go to the next mode, this
will save the new cal-adjust value, and it will be retained
even if power is turned off.
2), 3), 4) and 5) are set at the factory and need only be
modified when a sensor is changed.
6. Testing the analog output: By pushing the UP or
DOWN buttons, the user forces the analog output to its
low and high values, respectively. This facilitates the
hook-up and testing of the user’s monitoring equipment.
7&8Output range setting: These modes are used to set
dewpoints corresponding to the low and/or high end of