Reversible Backlight LCD
The LCD display automatically reverses its presentation orientation depending on measurement
mode. This is to match the display orientation with the selected sensor mode (light, air velocity,
or environmental measurements such as Wet bulb temperature).
The LCD is equipped with backlighting for easier viewing, especially in dimly lit areas. With the
meter powered ON, short press the power button to turn ON the backlight. The backlight will
power OFF after several seconds.
Display Hold
Short press the H (Hold) button to freeze and unfreeze the displayed reading. The Display Hold
mode is not operational when using the MAX-MIN Recording mode.
MAX-MIN Record Mode
In this mode, the meter records the maximum and minimum readings over time.
• Short press the R (Record) button to start recording MAX/MIN readings.
• Now use short presses of the R button to toggle MAX and MIN reading displays.
• Short press the H button to reset MAX and MIN memories.
• Press and hold the R button to exit the Recording mode.
Measurement Modes
Air Velocity with Air temperature
• With the meter ON, press and hold the M (Mode) button until ‘An’ is displayed; then release
the button.
• Hold the measurement vane in the air stream (in either direction).
• View the air velocity and air temperature readings on the LCD.
Light Measurements
• Press and hold the M button until ‘LigHt’ is displayed; then release.
• Hold the meter so that the source of light fully encompasses the light sensor dome.
• View the light reading on the LCD (light readings are displayed in reverse orientation).
Type K/Wind chill/Relative Humidity/Dew point/Wet bulb/Heat index
Measurements
• Press and hold the M button until the desired function is displayed:
• CHiLL Wind chill; rH Relative Humidity (with air temperature); dP Dew point; _Et Wet bulb;
HEAt Heat index; tYPE Type K thermocouple temperature (attach thermocouple to meter)
• Place the meter or type K probe in the measurement area and view the readings on the LCD.
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