CD-W00-00-2U Johnson Controls CO2 Transmitter

Overview

The Johnson Controls CD-W00-00-2U is a wall-mounted room carbon dioxide (CO2) transmitter designed to monitor indoor air quality in commercial HVAC applications. Housed in a low-profile enclosure, it utilizes an advanced dual-wavelength, single-beam silicon CARBOCAP sensor to deliver superior accuracy, reliability, and long-term measurement stability. This device is equally suited for spaces with periodic or constant occupancy, such as classrooms and hospital rooms, and can operate standalone or integrate seamlessly into a Building Automation System (BAS) to support demand-controlled ventilation (DCV) strategies.

Features

• Advanced CARBOCAP technology provides a single-beam, dual-wavelength design for excellent stability over time and temperature.
• Dual-channel optics and long-term adjustment signal processing compensate for light-source drift.
• Self-calibration feature automatically corrects sensor drift in periodically unoccupied spaces.
• Versatile field-selectable output signals include 4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC.
• Built-in internal regulation and reverse wiring protection prevent circuit board damage.
• Menu-driven operation allows for easy configuration and a programmable CO2 measurement span.

Specifications

• CO2 Measuring Range: 0 to 2,000 ppm
• Accuracy: Plus or minus 50 ppm + 3.0% of reading at 77 degrees Fahrenheit (25 degrees Celsius)
• Long-Term Stability: Less than 5.0% of full scale over 5 years
• Output Signals: 4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC
• Power Supply Range: 20 to 30 VAC (18 to 30 VDC), Class 2
• Power Consumption: Less than 2.0 W average
• Operating Temperature Range: 23 to 113 degrees Fahrenheit (-5 to 45 degrees Celsius)
• Operating Humidity Range: 0 to 85% RH (non-condensing)
• Enclosure Dimensions: 4.72 x 3.16 x 1.22 inches (120 x 80 x 31 mm)
• Factory Calibration Altitude: 0 to 2,000 feet (0 to 600 m) above sea level without compensation

Applications

• Demand Control Ventilation (DCV) systems to optimize energy savings (potential for 10% to 70% reduction in heating/cooling costs).
• Indoor Air Quality (IAQ) and fresh air monitoring in commercial buildings, office spaces, and schools.
• Rooftop air handling units and Economizer control systems.
• Healthcare facility environmental monitoring, including patient and hospital rooms.