Sper Scientific 800021 RH/Temp SD Card Logger - Manual (Page 20)

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MEASUREMENT
PROCEDURES
Note
The meter will default to the last
function setting used when it is turned
off and on again.
Humidity and Temperature
1. Press POWER to turn the meter
on.
2. Plug the probe plug into the probe
input socket.
3. Press and hold FUNC to cycle
through the options until “rH”
appears on the LCD. Release the
FUNC button. The humidity value
(%RH) appears on the upper
display and the temperature value
(°C or °F) appears on the lower
display.
Note
When using the meter for the first
time, the meter will default to the
humidity/temperature function and to
the Celsius scale for the temperature
value. See page 16 for instructions