Sper Scientific 800047 Oxygen Pen - Manual (Page 8)

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MEASUREMENT PROCEDURES
O
2
and Air Temperature
Measurement
1. Press POWER to turn the meter on.
Note…
Press POWER again to turn the unit off.
2. Point the oxygen/temperature
sensor toward the intended
measurement area.
3. The O
2
value appears on the primary
display as %O
2
. The temperature
value appears on the secondary
display as °C or °F.
Hold Function
1. During measurement, press HOLD
to freeze the current readings on the
display. “Hold” will appear on the
LCD.