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Extech Instruments CO250

Extech Instruments CO250
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Specifications
Function Range Resolution Accuracy
CO2
0 to 5000ppm 1ppm ±(%5rdg + 50ppm)
5000 to 9999ppm 1ppm Not specified
Pressure dependence: +1.6% reading per kPa deviation from
normal pressure, 100kPa
Temperature
-10 to 60°C
14 to 140°F
0.1° ±0.6°C/0.9°F
Humidity 0.0 to 99.9% 0.1%
±3%(10 to 90%)
±5%(< or > 10 to 90%)
Wet Bulb
-5 to 60°C
23 to 140°F
0.1°
Calculated from RH and
Temperature
Dew Point
-20 to 60°C
-4 to 140°F
0.1°
Display Triple LCD with backlight
Sensor Type CO2: NDIR (non-dispersive infrared) technology
Humidity: Capacitance sensor;
Temperature (air): Thermistor
Operating Conditions 0 to 50
o
C (32 to 122
o
F); < 95% RH non-condensing
Storage Conditions -20 to 60
o
C ( -4 to 140
o
F); <99% RH non-condensing
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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