General Tools and Instruments CDM77535 User Manual
Page 10
SPECIFICATION
CO
2
Range:
0-5,000ppm
5,001-9,999 (out of scale)
Resolution:
1ppm
Accuracy:
±50ppm ±5%rdg (0-5,000ppm)
Not specified for out-of-scale
Pressure
Dependence:
+1.6% reading per kPa deviation from
normal pressure, 100kPa
TEMPERATURE
Range:
14º-140°F (-10.0º to 60.0°C)
Resolution:
0.1°F (0.1°C)
Accuracy:
±0.9°F (0.6°C)
HUMIDITY
Range:
0.0 to 99.9%
Resolution:
0.1%
Accuracy:
±3% (10 to 90%) ±5% (others)
Warm up:
30 seconds
Operating:
32° to 122°F (0º to 50°C), 0 to 95%RH
(avoid condensation)
Storage:
-4° to 140°F (-20º to 60°C), 0 to 99%RH
(avoid condensation)
Power Source:
4 “AA” batteries, DC adaptor
Battery life:
24 hours (Alkaline)
CO
2
LEVELS AND GUIDELINES
NON-ENFORCED REFERENCE LEVELS
NIOSH recommendations
250-350ppm:
Normal outdoor ambient concentrations
600ppm:
Minimal air quality complaints
600-1000ppm:
Less clearly interpreted
1000ppm:
Indicates inadequate ventilation; complaints
such as headaches, fatigue, and eye/throat
irritation will be more widespread. 1000ppm
should be used as an upper limit for indoor
levels.
EPA Taiwan:
600ppm and 1000ppm
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