Carrier ZS Standard - CO2 Sensor Specifications; Wiring Specifications

CO2 sensor
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Installation Guide All rights reserved
43
CO2 sensor specifications
Method
Dual Beam Absorption Infrared
TM
Patented TEMA (time extended measurement algorithm) self-calibration software
Optional thermistor temperature measurement
Sample Method: Diffusion or flow-thru (50 to 100 ml/min)
Measurement range
Analog Output: 0–2000 ppm factory default adjustable to 10,000 ppm
Digital display: 0–10,000 ppm
Sensitivity: ± 10 ppm
Resolution: ± 1 ppm
Sensor tolerance
Accuracy:
Typical Conditions: °60° to 90°F (15° to 32°C)
0–2000 ppm: ± 50 ppm or ± 3% of reading, whichever is greater
2000–10,000 ppm: ± 5% of reading
Extended Conditions : 32° to 122° (0° to 50°C)
0–2000 ppm: ± 100 ppm or ± 5%, whichever is greater
2000–10,000 ppm: ± 7% of reading, whichever is greater
Pressure Dependence: Add 0.13% of reading per mm Hg decrease from 760 (On
board correction, user set)
Annual drift
± 10 ppm (negligible) with TEMA on
± 20 ppm typical with TEMA off
Response Time: 0–90% FS < 2 minutes
Warm-Up Time: 25 C < 2 minutes
Operating Conditions: 32° to 122°F (0° to 50°C)
0–95% RH (relative humidity), non-condensing
Storage Conditions: –40° to 158°F (–40° to 70°C)
Power
Requires a dedicated 24 Vac, 3 Va transformer
Certification
FCC Part 15 Class B
Calibration Interval: Five years/zero ppm gas offset adjust
Wiring specifications
Cable from sensor to controller:
If <100 ft (30.5 meters) 22 AWG, unshielded
If >100 ft (30.5 meters) 22 AWG, shielded
Maximum length:
500 feet (152 meters)
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