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Johnson Controls CD-Wxx-00-0 Series Wall Mount CO₂ Transmitter

Wall Mount CO₂ Transmitter
CD-Wxx-00-0 Series

Johnson Controls offers a complete line of carbon dioxide (CO₂) modules that measure and transmit CO₂ levels ranging from 0 to 2,000 parts per million [ppm]. This compact device offers a choice of 0 to 10 V or 0 to 20 mA output signals and features an optional relay output with or without a digital display. Johnson Controls CO₂ transmitters are easy to install and to operate.

The silicon-based CARBOCAP® sensor delivers high accuracy and long-term measurement stability (±100 ppm) over a five year period without calibration. The diffusion aspirated, single-beam, dual-wavelength sensor structure is remarkably simple. It consists of an infrared (IR) source, a sample cell, an IR detector, and a tunable interference filter that enables measurements at two wavelengths. Reference measurements made using a tunable interference filter eliminate the typical weakness of dual-beam sensors and permits shifting the optical pass band electronically. This innovative design provides precise reference readings that eliminate the typically broad deviation expected from a traditional CO₂ sensor.

• stable infrared reference compensates for light-source drift.
• CO₂ transmitters with DCV strategies offer a potential for 1 0 t o70% energy savings
• single-beam, dual-wavelength design provides superior performance compared to other technologies
• silicon, micro-machined construction provides reliable CO₂ measurement in duct environments
• high thermal stability with negligible airflow dependence

Select a link under the "item" tab below to order.

Cat #Descriptions
CD-WA0-00-0Transmitter with Analog Temperature Output
CD-WR0-00-0Transmitter with Relay
CD-WRD-00-0Transmitter with Relay and Display
Measuring Range 0 to 2,000 ppm CO2
Accuracy at 77°F (25°C) <±(30 ppm CO2 + 2.0% of reading) (includes manufacturing deviation and drift). All accuracy specifications reflect testing the transmitters using high-grade, certified gases. Transmitters are intended for an altitude range of 0 to 1,969 ft (0 to 600m) above sea level without compensation. To compensate for higher altitudes, see the Johnson Controls installation instructions for this device.
Non-Linearity <1.0% of Full Scale
Dependence of Output
<0.056% of Full Scale/F° (<0.1% of Full Scale/C°)
Long-Term Stability <±5.0% of Full Scale/5 Years
Response Time (0 to 63%) 1 Minute
Operating Temperature Range 23 to 113°F (-5 to 45°C)
Storage Temperature Range -4 to 158°F (-20 to 70°C)
Humidity Range 0 to 85% RH (non-condensing)
Transmitter Output Signal CO2 Jumper Selectable: 0 to 20 mA or 4 to 20 mA or 0 to 10 VDC (Default)
Maximum Output Current: 25 mA;
Maximum Output Voltage: 12.5 V
Analog Temperature
Module (Optional)
Linear 0 to 10 VDC for 32 to 122°F (0 to 50°C)
Relay Output (Optional) Maximum 30 V, 0.5 A, Class 2
Resolution of CO2 Output 10 ppm (CD-WRD-00-0 only)
Recommended External Load Current Output: Maximum 500 ohms Load Resistance
Voltage Output: Minimum 1,000 ohms Load Resistance
Power Supply Range 20 to 30 VAC (18 to 30 VDC), Class 2
Power Consumption <2.5 W Average, 4.1 VA
Warm-up Time < 5 Minutes for CO2 Measurement
< 30 Minutes for Temperature Measurement
Housing Material ABS Plastic
Dimensions (H x W x D) 3-5/32 x 4-9/32 1-3/8 in. (80 x 108.5 x 35 mm)
Agency Listings UL Listed, CCN XAPX (US) and XAPX7 (Canada);
EMC Directive (CE Mark), 89/336/EEC; FCC and DOC Compliant

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