DeFelsko POSITECTOR DPM Full Manual page 5

Typical Screen
DPM-D probes only display RH, Ta, & Td
NOTE:
Protective Cap
The PosiTector DPM is shipped with a protective plastic cap over
the surface temperature sensor. Remove this cap prior to use.
Replace it when the Gage is not in use to protect the sensor.
Wrist Strap
We recommend attaching and
wearing the supplied wrist strap.
Protective Lens Shield
The LCD is covered with a thin plastic film for protection against
fingerprints and other marks during shipment. This film, while
usually removed before using the Gage, can be left in place to
protect against paint overspray or debris. Replacements can be
purchased.
RH - Relative Humidity (measured)
Ta - Air Temperature (measured)
Ts - Surface Temperature (measured)
Td - Dew Point (calculated)
Ts-Td - Surface minus Dew Point
Temperature (calculated)
Tw - Wet Bulb Temperature (calculated)
(Advanced Models Only)
V - Wind Velocity (DPM-A model only)
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