Specifications - Extech Instruments CO250 User Manual

Specifications

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Function Range
0 to 5000ppm
5000 to 9999ppm
CO
2
Pressure dependence: +1.6% reading per kPa deviation from
normal pressure, 100kPa
-10 to 60°C
Temperature
14 to 140°F
Humidity 0.0 to 99.9%
-5 to 60°C
Wet Bulb
23 to 140°F
-20 to 60°C
Dew Point
-4 to 140°F
Display Triple LCD with backlight
Sensor Type CO : NDIR (non-dispersive infrared) technology
2
Humidity: Capacitance sensor;
Temperature (air): Thermistor
Operating Conditions 0 to 50
Storage Conditions -20 to 60
Power Supply 4 x 1.5V 'AA' batteries or AC adaptor (9V/1A)
Battery Life approx. 24 hours (alkaline batteries)
Dimensions / Weight 200x70x57mm (7.9x2.7x2.3")/190g (6.7 oz.)
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Resolution Accuracy
1ppm ±(%5rdg + 50ppm)
1ppm Not specified
0.1° ±0.6°C/0.9°F
±3%(10 to 90%)
0.1%
±5%(< or > 10 to 90%)
0.1°
Calculated from RH and
Temperature
0.1°
o o
C (32 to 122 F); < 95% RH non-condensing
o o
C ( -4 to 140 F); <99% RH non-condensing
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