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Note: The manual recording mode is not operational in Min/Max mode.
Recalling Manually Stored Readings
The meter can recall up to 99 previously saved readings.
1.
While in normal operating mode, long press the M/RCL button until 'Recall' flashes on
the display.
Short press the H/ or MEM/ buttons to scroll through the memory locations. The
2.
selected memory location will flash for approximately 3 seconds and then the stored
reading will display on the screen.
3.
Short press the M/RCL
4.
The secondary display shows the time and date the data was recorded into memory.
5.
To exit memory recall mode, short press the /ESC button.
Automatic Datalogging
The CO260 automatically records CO
32,000 records. The sample rate can be set from 1 second to 4 hours 59 minutes and 59 seconds.
See 'Setup Mode' for information on setting the sample rate.
1.
After the sample rate is selected, long press the /ESC button to begin logging. The 'rec'
icon flashes and the primary display shows the real time value. The secondary display
shows the current time and date alternately.
2.
Short press the M/RCL button to select a different measurement mode to record.
3.
To exit the datalogger mode, long press the /ESC button. The 'rec' icon stops flashing.
Notes:
Previous records are overwritten any time logging is started.
The M/RCL button is the only button that is operational while in datalogging mode.
CO Alarm
The meter features an audible alarm (80db beep) that warns when CO concentration exceeds
the set limit. The beeper stops when the readings fall below the limit. The meter beeps again if
the value exceeds the limit. See the section 'Setup Mode' for more information.
Auto Power OFF
The meter turns off automatically after 20 minutes of inactivity. To override the function, long
press both the
display.
NOTE: Auto power off is not operational while in calibration mode.
button
/SET and H/ buttons while powering ON the meter until "n" appears in the
to change the displayed measurement parameter.
, CO, Temperature, or RH readings and can store up to
2
8
CO260-en-GB_v1.0 8/17
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Questions and answers
How do I calibrate this meter?
To calibrate the Extech Instruments CO260 meter for relative humidity:
1. Ensure calibration is performed in a controlled temperature environment of 25°C.
2. Plug the sensor probe into a 33% salt solution bottle.
3. Long press the ESC, MEM, and SET buttons simultaneously to enter calibration mode.
4. The LCD will blink "CAL" and display the current value (e.g., 32.8% at 25°C).
5. The meter will calibrate for about 60 minutes until the value stops blinking.
6. The calibration is complete once the value remains steady.
Caution: Do not calibrate without the default calibration salts, as this may cause the meter to lose calibration data and become inoperable. Contact Extech for calibration salts or services if needed.
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