USER-FRIENDLY MEASURING DEVICES carbon dioxide transmitters CDT2000 series Multifunctional, wall mount CO2 transmitters for building automation systems The CDT2000 series air quality transmitters are engineered for building automation systems in the HVAC/R industry. The CDT2000 series measures carbon dioxide (CO2), utilizing the industry standard NDIR measurement principle, and temperature (T). Optional relative humidity (rH) measurement is also available in the same device. The CDT2000 series devices are available with large touchscreen display making the configuration of the device quick and easy. The CDT2000 series transmitters calibrate themselves automatically using ABCTM logic. The ABCTM logic requires that the space in which the transmitter is used needs to to be unoccupied for four hours per day so that the indoor CO2 concentration drops to the outside level. CDT2000-DC is a dual channel model with a measuring channel and a reference channel that makes a continuous comparison and the necessary adjustment accordingly. CDT2000-DC is also suitable for buildings that are continuously occupied. CDT2000 series devices include: • Separate field configurable output for each measurement parameter (CO2, rH, T). • Proportional output options including: voltage (0-10 V, 2-10 V) and current (4-20 mA). CDT2000 series device options offer: • 2” x 3” touchscreen display • Field configurable relay for any of the three parameters • Modbus configuration CDT series devices are commonly used to monitor: • CO2 and humidity levels in offices, public spaces, meeting rooms and classrooms • CO2 levels of return air in ventilation systems • incoming air and return air humidity levels in ventilation system • humidity in various industrial applications • temperatures in HVAC/R environment • CDT2000-DC series devices can also be used in applications where there is a constant source of carbon dioxide present (for example hospitals and greenhouses) model summary Copyright HK Instruments 2017 www.hkinstruments.fi Datasheet Version 6.0 2017

CARBON DIOXIDE TRANSMITTERS CDT2000 Series SPECIFICATIONS Performance Measurement ranges: CO2: 400–2000 ppm Temperature: 0...50 °C Relative humidity: 0–100 % Accuracy: CO2: ±40 ppm + 2 % of reading, DC model: 75 ppm or 10 % of reading (whichever is greater) Temperature: <0.5 ºC Relative humidity: ±2...3 % at 0...50 °C and 10–90 % rH Total error band includes accuracy, hysteresis and temperature effect over 5...50 °C and 10–90% rH. Technical Specifications Media compatibility: Dry air or non-aggressive gases Measuring units: ppm, °C and % rH Measuring element: CO2: Non-dispersive infrared (NDIR)...