Extech Instruments EA80 User Manual page 5

CO
Data Hold
Backlight
Find Quality Products Online at:
Maximum and Minimum Recording Measurement
2
1. Press "MX/MN" button to enter the maximum /
minimum recording mode, the "MAX" icon
appears on the display. The maximum CO2
reading will be displayed and will be updated
only when a higher reading occurs.
2. Press "TIME" button to enter time display mode.
Displays 2 and 3 will indicate the time the
maximum reading occurred.
3. Press "MX/MN" button again. The "MIN" icon
will appear with the minimum value and its
stamp time.
4. Press "MX/MN" button again. The " " icon will
appear with the current value and current time.
5. Press "MX/MN" button again cycle through the
recorded MAX, MIN and current readings.
6. Press "" button to exit this mode.
7. Press "TIME" button exit the time display
mode.
1. Press the H button momentarily to freeze the
displayed reading. The 'H' icon will appear on
the upper left-hand side of the display.
2. Press the H button again to return to normal
operation (the 'H' hold icon will disappear).
1. Press the button to turn the backlight on or off.
2. The backlight will turn off automatically after 30 seconds.
GlobalTestSupply
www.
MAX
8
m:s
MIN
m:s
m:s
SET MAX MIN
8888
ALM
R 88
M Err Err INTV
8888 8888
DEW
WET
°C°F
CO ppm
m:s
2
5 EA80-en-GB_V3.6
.com
CO
ppm
2
d-h
CO
ppm
2
d-h
CO
2 ppm
d-h
CAL
CO
ppm
2
CO d-h %RH ppm
2
11/16
sales@GlobalTestSupply.com