Series CDTA Communicating Carbon Dioxide Detector

Measures CO2, Humidity, Temperature, Temperature Set Point, and Override

The SERIES CDTA Communicating Carbon Dioxide Detector combines the function of three room sensors into a single, compact housing. Parameters include carbon dioxide, humidity, temperature, and temperature set point with override. By having field selectable Modbus® and BACnet Communications, only four wires are needed for power and the communication signal. The communicating detectors can be daisy chained together to further reduce installation cost. In order to reduce the set up time, the RS-485 MAC address is set up using on board dip switches. A second set of dip switches are used to select whether output is Modbus® RTU or BACnet MS/TP communication protocols and to limit access to the set up menu. Like our Series CDT Carbon Dioxide Transmitter, the Series CDTA uses a Single Beam Dual Wavelength Non-Dispersive Infrared (NDIR) sensor to measure the carbon dioxide level. This technology can be used in installations that will be occupied 24 hours per day. For improved accuracy, the transmitter can be field calibrated to the environmental conditions of the installation. Also, the barometric pressure can be programmed to correct for altitude. The humidity uses a capacitive polymer sensor and the temperature is measured using a 10KO thermistor sensor. The humidity sensor is field replaceable without the need for additional calibration. Optional local and remote displays are available to display any of the parameters. For applications in which the building occupants aren’t familiar with CO2 concentrations, the LCD can be programmed to display temperature, humidity, or temperature set point instead.

Product Applications

  • Demand control ventilation in schools, office buildings, hospitals, and other indoor environments
  • LEED® certification

Models & Ordering

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Model Description Usually Ships Price Order
CDTA-2N000
Ships: 1-2 Weeks
Price: $300.00
Carbon Dioxide / Temperature / Humidity Communicating Stat with Set Point and Override, Modbus and BACnet Output, North American Wall Mount Housing, 2000 PPM Range 1-2 Weeks $300.00 Order
CDTA-2N000-LCD
Ships: 1-2 Weeks
Price: $350.00
Carbon Dioxide / Temperature / Humidity Communicating Stat with Set Point and Override, Modbus and BACnet Output, North American Wall Mount Housing, 2000 PPM Range, LCD Display 1-2 Weeks $350.00 Order
CDTA-5N000
Ships: 1-2 Weeks
Price: $300.00
Carbon Dioxide / Temperature / Humidity Communicating Stat with Set Point and Override, Modbus and BACnet Output, North American Wall Mount Housing, 5000 PPM Range 1-2 Weeks $300.00 Order
CDTA-5N000-LCD
Ships: 1-2 Weeks
Price: $350.00
Carbon Dioxide / Temperature / Humidity Communicating Stat with Set Point and Override, Modbus and BACnet Output, North American Wall Mount Housing, 5000 PPM Range, LCD Display 1-2 Weeks $350.00 Order

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Specifications

Sensor (CO2):
Single-beam, dual-wavelength NDIR; Humidity: Capacitive polymer; Temperature: 10KΩ thermistor.
Range:
CO2: 0 to 2000 or 5000 PPM CO2 (depending on model); Humidity: 0 to 100% RH; Temperature: 32 to 122°F (0 to 50°C).
Accuracy:
CO2: ±40 ppm ±3% of reading; RH: ±2% (10 to 90% RH); Temperature: ±1°C @ 25°C.
Temperature Dependence (CO2):
±8 ppm / °C at 1100 ppm.
Non-Linearity (CO2):
16 ppm.
Pressure Dependence (CO2):
0.13% of reading per mm of Hg.
Response Time (CO2):
2 min. for 99% step change.
Temperature Limits:
32 to 122°F (0 to 50°C).
Humidity Limits:
10 to 95% RH (non-condensing).
Power Requirements:
10 to 42 VDC / 10 to 30 VAC.
Power Consumption:
Average: 0.5 watts; Peak: 1.2 watts.
Output:
2-wire RS-485, Modbus® RTU or BACnet MS/TP communication protocol.
Weight:
4.4 oz (125 g).
Enclosure Rating:
IP20.
Agency Approvals:
BTL, CE.

Features

  • Field selectable Modbus® and BACnet communications reduces wiring
  • Single-beam dual-wavelength CO2 sensor
  • Replaceable humidity/temperature sensor
  • Physical hardware lockout
  • Optional remote display tool
  • Digital Intelligent Temperature Compensation Algorithm (DITCA™) corrects for errors due to self heating effects of combination wall sensors

Accessories

Model Number Description Usually Ships Price Order
Remote display with mini USB display. A-449 Remote display with mini USB display. Same Day $50.00 Order
Gas Calibration Kit <br><b>
(GROUND SHIPMENTS ONLY)</b> GCK-200CO-2000CO2 Gas Calibration Kit
(GROUND SHIPMENTS ONLY)
Same Day $345.00 Order
A-CDT-KIT Accessory kit including terminal block and power supply. Same Day $35.00 Order

Videos

Model Chart

   
EXAMPLE CDTA 2 N 0 0 0 LCD Series CDTA-2N000-LCD, Carbon Dioxide Detector, gas concentration range 2000 ppm, North American wall mount, LCD display
SERIES CDTA             Carbon Dioxide Detector
GAS CONCENTRATION RANGE   2
5
          2000 ppm
5000 ppm
MOUNTING CONFIGURATION     E
N
        European Wall Mount
North American Wall Mount
CARBON DIOXIDE OUTPUT       0       NONE
TEMPERATURE OUTPUT         0     NONE                         
RH OUTPUT           0   NONE
OPTIONS             COC
FC
LCD
 

Certificate of Calibration
Factory Calibration Certificate
LCD Display

 

Product Literature

Manuals

Catalog Pages

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