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LPDT User’s Manual
page 24
taken that the sensor temperature is not below the tempera-
ture of the hand, as in such case condensation could occur
and super saturate the sensor. For the same reason, avoid
exhaling directly onto the sensor.
3.4.4.4 Viewing Serial Number Mode
In this mode the user can view the serial number of the sen-
sor calibrated and shipped with the instrument. This number
is also engraved on the stainless steel sintered filter of the
sensor element. The display shows the serial number by
alternately displaying
;61
and the number. If the number is
larger than 1999 then it is displayed in 2 parts, first part is
the thousands signified by the x10
3
legend in the upper right
corner of the display and the second part is the units. For
example serial number 12345 will be shown as:
Pressing the UP and DOWN buttons simultaneously resets
the instrument, this is useful for restarting in the set-up state
(by holding the MODE button), in installations where
power can not be turned on and off easily.
Pressing the MODE button changes the unit to the Viewing
Dewpoint Mode.
3.4.5 SetUp State
To enter the Setup State power-up the unit (or reset it from
the serial number Mode), and hold the MODE key pressed
while the unit is initializing. Refer to Appendix B for a flow
x10
3 12 345 XSN