COSA Xentaur Xentaur LPDT - Manual (Page 29)

LPDT User’s Manual
page 22
2. Push the MODE key a few times until the display shows
&$/.
3. Press the UP button. The display will show
&1), prompt-
ing you to confirm that you want to start the calibration
procedure. You can abort the calibration procedure by
pressing the MODE key.
4. Remove the sensor from its packaging container so that
the porous metal filter is visible and the sensor is
exposed to in-hand micro-climate. Close the packaging
container as soon as you have removed the sensor to
avoid degradation of the desiccant inside of the con-
tainer. You may want to re-use the container at a later
date.
5. Push the UP button again to confirm that you want to
start the calibration procedure. The display will flash $&
for 60 seconds, while the sensor is saturating. Make sure
you keep the sensor exposed to in-hand micro-climate
until the display shows
(1'.
6. After 60 seconds, the display will flash the selected sen-
sor type (see “Selecting a sensor type 3.4.5.2”) and then
the instrument will calculate the slope and offset of the
sensor curve while displaying the calculations and then
will display
(1' for a few seconds, after which the
instrument will automatically go into measuring mode.
The sensor calibration is completed. (The display may
flash
6$7, indicating that the sensor has super-saturated.
As soon as the sensor is exposed to an atmosphere with
a dewpoint lower than the saturation dewpoint, the dis-
play will indicate the dewpoint measured by the sensor.)
The display may show alternating
6(1and/2as an
indication that the measured capacitance is too low to be
from a saturated sensor, in this case make sure that the
sensor is fully engaged into the LPDT, and repeat the