5. Calibration
The me
ter is calibrated at standard 400ppm CO2 concentration in factory. It’s suggested to do either ABC or
manual calibration regularly to maintain good accuracy.
Press
“ SET”
+
“+”
keys at the same time till “
CAL
” is flashing. Long pressing
“SET”
key to start the
calibration. During the calibration,
“CAL”
will flash on display with a 300 seconds count down. After 5 mins
count down, the display return to normal measuring mode to indicate the calibration is done. During the
calibration procedure, long pressing
“+”
key can quit the calibration function.
CAUTION:
Do not calibrate the meter in the air with unknown CO2 level. Otherwise, it will be taken as
400 ppm and leads to inaccurate measurement. The manual calibration is suggested to be done outdoor with
good ventilation, fresh air and sunny day where CO
2
level is around 400ppm. Do not calibrate in rainy day
because high humidity will affect the CO
2
level in air. Do not calibrate in places crowded with people or close to
where exist high CO
2
such as ventilating outlets or fireplaces.
ERROR CODE AND SOLUTIONS
CODE
PROBLEM
SOLUTION
E01
CO
2
sensor is damaged
Send back to repair
E02
Measured reading is under the lower limit
For CO
2
E02: Re-calibrate. For other E02: leave the meter in
room condition for 30 mins.
If it not works, send back to repair
E03
Measured reading is above the upper limit
For CO
2
E03: put the meter in fresh air for 5 mins. For other
E03: leave the meter in room condition for 30 mins.
If it not works, send back to repair
E17
ABC mode of CO
2
sensor is fail
Send back to repair
E31
.
34
Temp
./
RH measuring circuit is in error
Send back to repair
?
Can’t power on
Check whether the adaptor is well plugged and the 5VDC power supply is working.
Warranty
Triplett / Jewell Instruments extends the following warranty to the original purchaser of these goods for use. Triplett warrants to the
original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of (1) one
year from the date of purchase. This warranty does not apply to any of our products which have been repaired or altered by
unauthorized persons in any way or purchased from unauthorized distributors so as, in our sole judgment, to injure their stability or
reliability, or which have been subject to misuse, abuse, misapplication, negligence, accident or which have had the serial numbers
altered, defaced, or removed. Accessories, including batteries are not covered by this warranty
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www.triplett.com
