Sper Scientific 850039 Conductivity TDS Meter - Datalogging - Manual (Page 6)

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3-D. 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 se-
conds. The display reverts to the current reading.
3-E. 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 the set sampling time, press the LOGGER (8) but-
ton 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 set 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 (8) button again.
 To exit the "REC" function, press and hold the REC (4) button for at
least 2 seconds.
b. Manual Memory (sampling time MUST be set to "0" zero)
 Press the LOGGER (8) button once to save each data point.
 Up to 250 data points can be saved and reviewed on the meter’s LCD
by pressing and holding the SEND button and then using ▲UP (5) and
▼ DOWN (6) to scroll.
 To exit the this function, press and hold the ESC (3) button for at
least 2 seconds.
4. ADVANCED AJUSTMENT PROCEDURES
Press the SET (8) button for at least two seconds to enter the advanced
adjustment procedures. Press the ESC (3) button to exit.
Before executing the advanced adjustment procedures,
exit the HOLD and RECORD functions.