Sper Scientific 850045 Dissolved Oxygen - DO Pen - Manual (Page 8)

MEASUREMENT PROCEDURES
8
Temperature Measurement
1. When not in calibration mode, the meter continually
displays the temperature at the bottom left hand corner
of the LCD in either ºC or ºF.
2. Press and hold the REC button (Fig., 1-4) for at least 2
seconds to switch the temperature unit from ºC to ºF.
Note...
The temperature unit cannot be changed when the meter is
in record mode (when the REC indicator is displayed on the
LCD).
Data Hold
1. While measuring, press the Hold button (Fig., 1-3) to
hold the displayed value. The LCD will show the HOLD
symbol.
2. Press the Hold button once again to release the data
hold function.