Extech Instruments EA80 User Manual page 9

Calibration
CO2 Calibration
Humidity Calibration
Temperature Calibration
PC Interface, Software Installation and Operation
This meter has the capability to connect to and communicate with a PC. To install and use
the software, please refer to the instructions provided on the supplied CD-ROM and/or the
instructions provided in the HELP Utility within the software program.
Check the software download page of the website
the PC software and its operating system compatibility.
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1. Press " " to turn the meter on.
2. Place the meter in a known CO2 reference for 10 minutes.
3. Press the "SET" button 5 times until "C-01" is displayed in the second display.
4. Press "►" or "◄" to select digits to adjust (flashing).
5. Press "▼" or "▲"to adjust the display to the reference value.
6. Press "" to store the value and exit the calibration mode.
1. Press " " to turn the meter on.
2. Place the probe in a known humidity reference for 60 minutes.
3. Press the "SET" button 6 times until "SET" and "CAL" are displayed on the LCD.
4. Press "▼" or "▲" to adjust the display to the reference value.
5. Press "" to store the value and exit the calibration mode.
1. Press " " to turn the meter on.
2. Place the probe in a known temperature reference for 60 minutes.
3. Press the "SET" button 7 times until "SET" and "CAL" are displayed on the LCD.
4. Press "▼" or "▲" to adjust the display to the reference value.
5. Press "" to store the value and exit the calibration mode.
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