CO260-en-GB_v1.0 8/17
10
6.
Short press the MXMN/AV/
button to save the setting and advance to the second
setup.
7.
Short press the MXMN/AV/
button to save the settings and return to P40.
8.
Short press the
/ESC button to exit without saving.
9.
Short press the H/
button to advance to the next step.
Note: The datalogging sampling range is from 1 second to 4 hours 59 minutes 59 seconds.
P50 Changing the Barometric Pressure Compensation
1.
When in pressure setup mode, P50 and “PrES” display on the LCD. Short press the H/
button to advance to P50 if necessary.
2.
Short press the MXMN/AV/
button to set the pressure compensation value for the CO
2
measurement. The current pressure compensation value in hPa will flash on the LCD.
3.
Short press the H/
or MEM/
button to adjust the barometric pressure value. The
pressure compensation range is from 70 to 199 hPA.
4.
Short press the MXMN/AV/
button to save the setting and return to P50.
5.
Short press the
/ESC button to exit without saving.
6.
Short press the H/
button to advance to the next step.
P60 Setting the Real-Time Clock
1.
When in Real-Time Clock mode, P60 and “rtC” display on the LCD. Short press the H/
button to advance to P60 if necessary.
2.
Short press the MXMN/AV/
button to advance to P61 and set the time as 12-hour or
24-hour format. The current time format will flash on the LCD.
3.
Short press the H/
or MEM/
button to change the format between 12-hour and 24-
hour.
4.
Short press the MXMN/AV/
button to save the setting and advance.
5.
The year will flash in the secondary display. Short press the H/
or MEM/
button to
change the value.
6.
Short press the MXMN/AV/
button to save the setting and advance to the month
setup.
7.
Short press the H/
or MEM/
button to change the value.
8.
Short press the MXMN/AV/
button to save the setting and advance to the next step.
9.
Repeat the above steps to complete the setup for the month/day/hour/minute/second
settings.
10.
Short press the MXMN/AV/
button to save the selection and return to P60.
11.
Short press the
/ESC button to exit setup mode.
Calibration
RH CALIBRATION
The meter is calibrated to a standard 33% and 75% salt solution bottle. Calibration must be
performed in a controlled temperature environment of 25°C.
CAUTION: Do not calibrate the humidity without the default calibration salts. The meter will lose
its current calibration data and will become inoperable. Contact Extech to order calibration salts
or to inquire about calibration services.
