DeFelsko PosiTector DPM Instruction Manual page 13

Wet Bulb
Displays the wet bulb temperature (Tw) 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 from the main screen.
NOTE:
Trend charts can only be displayed
when memory is off.
Flip Display
This option causes the display to rotate 180°. Ideal for right-side-
up viewing when the sensors are pointed away from the user.
White on Black
Inverts the LCD display to white on a black background to provide
better readability in some surroundings.
Backlight
Selects display brightness (Sun, Normal or Night). All settings will
dim slightly after a period of no activity to conserve battery life.
Press the Down button to brighten the display.
Set Clock
All batches are date-stamped when created, and all datasets are
time-stamped (24 hour format) when stored into memory. It is
therefore important to keep both the date and time current using
this menu option. Use the Up and Down buttons to scroll, and the
(-) and (+) buttons to adjust a value. The instrument's date and
time can also be viewed in Info (pg. 11).
(Advanced models only)
(Advanced models only)
(Advanced models only)
(Advanced models only)
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