Sper Scientific 840002 Anemometer Hotwire CFM Datalogger - Manual (Page 6)

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3-C. Zero Setting
• Slide the RETRACTABLE SENSOR COVER (21) up over the SENSOR
HEAD (20)
• Press the ▲UP (5) for about 2 seconds, or until the air velocity value
equals zero.
3-D. Type K, J Thermometer Measurement
• Unlock and remove the anemometer sensor from the meter and slide the
PROBE LOCK SWITCH (18) to the ◄LOCK position.
• Insert the thermocouple probe in the TYPE K/J PROBE INPUT (16).
• Turn on the meter by pressing the POWER (2) button.
• Press the FUNCTION (6) button to switch between type K or J,
"J type" or K type" will be displayed.
3-E. 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-F. 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
measurement 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-G. 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 8.
• Press the REC (4) button once, "REC" will be displayed. Depending on
your set sampling time, continue to step "a" or "b" (below).