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Specifications
Measurement range
Resolution
Accuracy
Sensor Type
Power supply
Battery life
Dimensions / Weight:
Troubleshooting
Error
Problem
No display when pressing
Display
power button
Display
Display switches off
Display
Calibration Failure
Measurement is below
E2
the range of the meter
Measurement is above
E3
the range of the meter
E4
Data error
E31
A/D failure
Measurement circuit
E33
failure
Self-test failure
E35
Sensor Failure
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0-999 ppm
1 ppm
0 ~ 100 ppm: ± 20%
100 ~ 500 ppm: ± 15%
Accuracy stated for ambient
o
conditions: 20
and 50% RH ±20%RH
Electrochemical
(3) 1.5V 'AAA' batteries
Approx. 250 hours (backlight
off); 35 hours (backlight on)
175 x 47 x 28mm (6.9 x 1.8 x
1.1") / 158.8g (5.6 oz.)
Solution
Ensure batteries are
properly installed with
correct polarity
Replace batteries
Check for low battery
indicator; replace
batteries
Check for low battery
indicator; replace
batteries
Check readings in a
different area
Check readings in a
different area
Contact Extech for service
Contact Extech for service
Contact Extech for service
Power meter in an area
free of carbon monoxide
Contact Extech for service
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
o
o
o
C ±5
C (68
F ±9
F)
7
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