Sper Scientific 850045 Dissolved Oxygen - DO Pen - Manual (Page 9)

Data Record (Maximum & Minimum Reading)
1. The data record function records the maximum and min-
imum readings. Press the REC button (Fig., 1-4) to start
the Data Record function - the display shows REC.
2. Press the REC button: the REC MAX symbol, along with
the maximum value shows on the display.
3. Press the REC button again and the REC MIN symbol,
along with the minimum value shows on the display.
4. To exit the record function, press and hold the REC
button for a minimum of 2 seconds. The display will
return to the current reading.
MEASUREMENT PROCEDURES
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