ICS
Intelligent Control Systems
Facility Automation and Security System Specialist
Facility Automation and Security Systems
Area CO2 +Temperature + Humidity Transmitter Model CDTH
Application and Features
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CDTH series CO2/temperature/humidity transmitters are designed for monitoring & controlling indoor air quality (CO2), temperature and humidity in one unit
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CDTHW is suitable for wall mount and CDTHD is suitable for duct mount
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High performance NDIR digital sensor and circuit, ensure precise measurement and temperature compensation
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Multiple optional RTD or thermistor sensors, compatible with a variety of control systems
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Stable, reliable and fast response
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15 years of CO2 sensor life without maintenance
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All electrical terminals are on the inside bottom, avoid any possible destroy to PCB when wiring (CDTHW)
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Digital technology applied, multiple outputs optional, over voltage and reverse polarity protection, high reliability and anti-interference capability
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Large LCD with unit indicator (CDTHW), display carbonm dioxide (CO2), temperature and humidity alternatively
Specification
Carbon dioxide (CO2)
Sensor: NDIR sensor, with ABC algorithm*
Sampling Method: diffusion
Accuracy: (40+3%MV) ppm
Response time(T90): <120s (30cc/min, low airflow)
Drift: <±10ppm/year
Range: 0~2000ppm (measure range 400~2000ppm)
Output: 4~20mA, 0~10V, RS485/Modbus
Temperature
Sensor: Digital, RTD or thermistor, see models
Range: 0~50°C
Accuracy: see accuracy table
Output: 4~20mA, 0~10V, RS485/Modbus or RTD / thermistor
Relative Humidity Sensor:
Digital polymer Range: 0~100%RH
Accuracy: see accuracy table
Hysteresis: < ±1%RH
Response time: <10s (25°C, in slow air)
Drift: <±0.5%RH/year
Output: 4~20mA, 0~10V, RS485/Modbus
Power supply: 16~28VAC/16~35VDC
Load resistance: ≤500Ω (Current output), ≥2kΩ (Voltage output)
Display: Optional LCD Display (CDTHW)
Display resolution: 1ppm, 0.1°C, 0.1%RH
Working environment: 0~50°C, 0~95%RH (Non-cond.)
Temp. compensation: 0~50°C
Storage temperature: -20~60°C
Housing material: fire retardant PC(UL94V-0)(CDTHW), fire retardant ABS
(UL94V-0) (CDTHD)
Protection: IP30 (CDTHW), IP65 (CDTHD)
Weight: 175g (CDTHW), 415g (CDTHD)
Approval: CE
