DeFelsko PosiTector DPM Guide Rapide page 5

Wet Bulb
When selected, the wet bulb temperature (Tw) is displayed on the
main screen. It is calculated from Ta and RH using an air pressure
of 1.0 atmospheres (1013 mbar). Variations of Tw at other
pressures could be greater than ±1°C (±2°F).
NOTE:
This menu item only appears when all memory functions
are turned off. Wet Bulb readings cannot be stored in memory.
Trend Chart
Displays a real-time graph of the readings over
the last three minutes. Use Trend Charts to
monitor short-term environmental changes and
spot trends.
Shortcut:
Press the Up button to scroll through
the trend charts.
NOTE:
Trend charts can only be displayed when memory is off.
Battery Type
Selects the type of batteries used in the Gage from a choice of
"Alkaline",
rechargeable). If NiMH is selected, the gage will trickle charge the
batteries while connected via USB to a PC or optional AC charger.
The battery state indicator icon is calibrated for the selected
battery type. No damage will occur if the wrong battery type is
selected.
NOTE:
DeFelsko recommends the use of eneloop (NiMH)
rechargeable batteries.
(Advanced models only)
(Advanced models only)
"Lithium" or "NiMH" (Nickel-metal
4
hydride