The CD-P series duct mount transmitters are designed for the measurement of Carbon Dioxide (CO2) and Temperature in Heating Ventilating and Air Conditioning applications where Demand Control Ventilation (DCV), fresh air and indoor Air Quality (IAQ), and rooftop air handling economizer control systems are often required. The transmitters incorporate the a dual wavelength NDIR CO2 sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long term stability. The CD P1000 Transmitter is available with CO2 output only, 0-10V or 4-20 mA, while the CD-P2000 range offers CO2 and Temperature with active and passive outputs. Feature: Dual wavelength non-dispersive infrared technology (NDIR)Measuring range 0...2000 ppmCO2 Accuracy at 25°C: < ± (50 ppm +2% of measured value)Temperature accuracy ±0.3 °CResponse time Ʈ63 < 100s at 3m/s (590 ft/min) air speedPower supply: 24 VAC ±20% or 15 - 30 VDCHousing material polycarbonate, UL94V-0 approvedProtection class enclosure: IP65, probe: IP20Working conditions: -20...60°C; 0...95% RH (non-condensing)Factory calibration certificate (DIN EN10204 - 2.2)