Chapter 4: Specifications & Accessories
38
Specifications
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INPUTS:
Carbon Dioxide:
Detector: NDIR (non-dispersive infrared)
Range: 0 to 5000 or 0 to 20,000 ppm (user-selectable)
Accuracy:
0 to 5000 ppm range: ±3% of reading ±50 ppm
0 to 20,000 ppm range
: ±3% of reading ±300 ppm
Temperature Influence: additional ±0.2% of reading ±2 ppm for each deg C
Resolution: 1 ppm (10 ppm above 10,000 ppm)
Response Time: 22 seconds for 63% of final value; 70 seconds for 10-90%
of 4000 ppm change
Relative Humidity:
Detector: Capacitive
Range: 0 to 100% non-condensing
Accuracy: ±3% @ 25°C
Resolution: 0.1%
Response Time: 50 seconds with minimum airflow of 1 mi/hr through wand
Temperature:
Detector: Thermistor
Range: 0° to +60°C (+32° to +140°F)
Accuracy: ±0.5°C (± 0.9°F) - requires minimum air flow of 1 mi/hr through
wand
Resolution: 0.1° C or F
Toxic Gas Channel:
Display Resolution: 0.1, 0.5 or 1 ppm, depending on sensor type
Gas Type Full Scale: Repeatability
Carbon Monoxide (CO) 1000 ppm 3% ±2LSD
Hydrogen Sulfide (H
2
S) 300 ppm 3% ±2LSD
Sulfur Dioxide (SO
2
) 100 ppm 3% ±2LSD
Chlorine (Cl
2
) 20 ppm 3% ±2LSD
Nitrogen Dioxide (NO
2
) 20 ppm 3% ±2LSD
Nitric Oxide (NO) 200 ppm 3% ±2LSD
Oxygen (O
2
) 30 % N/A
Hydrogen Cyanide (HCN) 100 ppm 3% ±2LSD
Ammonia (NH
3
) 200 ppm 10% ±2LSD
Ethlyene Oxide (ETO) 20 ppm 2% ±2LSD
NOTE:
LSD = Least Significant Digits
FSO = Full Scale Output
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