Extech Instruments EA80 User Manual page 6

CO Alarm Operation
2
Setting the Alarm Limit Values
1. Press "ALARM" button to turn on the alarm function, the "ALM" icon, and current value are
displayed.
2. Press "SET" button to enter High/Low limit value
setting mode, the "SET" icon is displayed and
hundred and thousand digits of the high limit value
will flash.
3. Press "" or "" button to set desired value.
4. Press "" button to move the cursor to set the tens
and ones digits.
5. Press "" or "" button to enter the desired value.
6. Press "" button to move the cursor to the hundred and thousand digits of the low limit
value.
7. Press "" or "" button to set desired value.
8. Press "" button to move the cursor to move the cursor to set the tens and ones of the low
limit value.
9. Press "" or "" button to set desired value.
10. To change any setting, press "" or "" button to move the cursor to desired high or low
limit value position.
11. Press "" button to store these setting and exit this mode.
Turning Alarm On / Off
1. Press "ALARM" button to turn on the alarm function, "ALM" is displayed.
2. When the CO
3. When the CO
4. To exit the ALARM function, press "ALARM" button again.
Setting the Real Time Clock
1. Press "SET" button to enter the real-time clock
setting mode, "SET" is displayed and the minutes
are flashing.
2. Press "" or "" button to set the minutes.
3. Press "" button to move the cursor to seconds.
4. Press "" or "" button to set the seconds.
5. Press "" button to move the cursor to days.
6. Press "" or "" button to set the day of the real time date. (Please note that this is not a
calendar. Days are elapsed days up to 99 total)
7. Press "" button to move the cursor to the hours. (Please note that this is a 24 hour clock)
8. Press "" or "" button to set the hours.
9. To change any setting, press "" or "" button to move the cursor to desired position.
10. Press "" button to store the settings and exit this mode.
value is below the low limit value, the meter displays "" mark and beeps.
2
value exceeds the high limit value, the meter displays "" and beeps.
2
SET
ALM
SET MAX MIN
ALM
88
R
M
8888 8888
6
CO
ppm
2
ppm
CO CO ppm
2 2
CAL
8888
INTV CO
Err Err
2 ppm
DEW
WET
°C°F
CO ppm CO d-h %RH ppm
m:s
2 2
EA80-en-GB_v3.3 09/15