Sper Scientific 800037 WBGT Heat Stress SD Card Logger - Manual (Page 18)

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MEASUREMENT
PROCEDURES
Humidity and Air Temperature
1. Press POWER to turn the meter on.
2. Press and hold FUNC to cycle through
the options until “tA” appears on the
LCD. Release the FUNC button. The
humidity value appears on the upper
display and the air temperature value
appears on the lower display.
Black Globe Temperature
1. Press POWER to turn the meter on.
2. Press and hold FUNC to cycle through
the options until “tg” appears on the
LCD. Release the FUNC button. The
black globe temperature value appears
on the upper display.
Hold Function
1. When measuring any parameter, press
HOLD to freeze the reading on the
display. “HOLD” will appear on the
LCD. Press HOLD again to release
the hold function.
Maximum and Minimum
To record maximum and minimum
readings:
1. When measuring any parameter, press
REC to begin recording the maximum
and minimum values. “REC” appears
on the LCD.