Sper Scientific 840088 pH Kit - Basic - Manual (Page 6)

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3-D. Data Hold
• While measuring, press the HOLD (3) button to freeze the displayed value.
• "HOLD" and the measurement are displayed.
• Press the HOLD (3) button again to exit
.
3-E. Maximum / Minimum
To record the maximum and minimum readings:
• Press the REC (4) button once. "REC" appears on the LCD.
• Press the REC (4) button again. "MAX", "REC" and the maximum meas-
urement appear on the LCD.
• Press the REC (4) button again. "REC Min" and the minimum measure-
ment appear on the LCD.
• To exit this function, press and hold the REC (4) button for at least 2 sec-
onds, until the display reverts to the current reading.
3-F. Data Logger
The data logger function can save up to 16,000 data points along with the
time (hour-min-sec) and date (year-month-day). When there are 16,000 data
points in memory, the display indicates "FULL."
•
To momentarily display sampling time, press the LOGGER (8) button
once.
• To change the sampling time, see item 4-D on page 7.
• Press the REC (4) button once, "REC" will be displayed. Depending on
your set sampling time, continue to step "a" or "b" (below).
a. Auto Data Logger (sampling time can be set for 2 seconds to
8 hours, 59 minutes, 59 seconds):
• Press the LOGGER (8) button once, "REC DATA" is displayed and
"Recording. . . ." flashes at each preset interval.
• Press the LOGGER (8) button again to exit. "REC" is still displayed,
but "DATA" is no longer shown.
• To resume data logging, simply press the LOGGER button (8) again.
• To exit the "REC" function, press and hold the REC button (4) for at
least 2 seconds.
b. Manual Data Logger (sampling time MUST be set to "0" zero):
• Press the LOGGER (8) button once to save each data point.
• To exit this function, press and hold the REC button (4) for at
least 2 seconds.