Sper Scientific 800047 Oxygen Pen - Manual (Page 9)

- 9 -
MEASUREMENT PROCEDURES
2. Press HOLD again to release the
hold function.
Record Data
The data record functions holds one
maximum and one minimum reading in
memory. To record:
1. Press REC to start recording. “REC”
will appear on the LCD.
2. With “REC” on the display, press
REC
. “REC MAX” and the maximum
value will appear on the LCD.
Note…
To delete the maximum value, press
HOLD
. The display will show “REC” on-
ly and the meter will resume exe-
cuting the memory function.