CD-WAD-00-2U Johnson Controls Wall Mount CO2 Transmitter

CD-WAD-00-2U Datasheet

Overview

The CD-WAD-00-2U is a wall-mount room carbon dioxide (CO2) and temperature transmitter manufactured by Johnson Controls. This device is designed to monitor environmental conditions in commercial and industrial spaces, providing accurate data to building automation systems. It features a dual-beam non-dispersive infrared (NDIR) sensor for CO2 detection and a precision thermistor for temperature measurement, housed in an attractive low-profile white enclosure with an integrated LCD display for local monitoring.

Features

• Dual-Beam NDIR Technology: Utilizes a highly accurate and reliable sensor to monitor CO2 levels with long-term stability.
• Integrated LCD Display: Features an alpha-numeric 2-line by 8-character display with a backlight for local visualization of CO2 and temperature data.
• User Interface: Includes a keypad for configuration and programming of operating parameters directly on the device.
• Field-Selectable Outputs: Provides two analog outputs that can be configured for either 0 VDC to 5 VDC or 0 VDC to 10 VDC.
• Adjustable Range: The CO2 measurement range is default at 0 ppm to 2,000 ppm but is field-adjustable up to 10,000 ppm.
• Altitude Correction: Programmable altitude compensation from 0 m to 2,550 m ensures accuracy across different geographic locations.
• Simple Installation: Designed for mounting on standard single-gang electrical boxes or directly to walls with a versatile backplate.

Specifications

• Power Supply: 20 VDC/VAC to 28 VDC/VAC, non-isolated half-wave rectified.
• CO2 Range: 0 ppm to 2,000 ppm (default); adjustable 1,000 ppm to 10,000 ppm.
• CO2 Accuracy: +/- 30 ppm + 3% of measured value.
• Temperature Sensor: Precision NTC thermistor with +/- 0.36°F accuracy at 32°F to 122°F.
• Temperature Range: Selectable 32°F to 95°F or 32°F to 122°F.
• Output Signals: 0 VDC to 5 VDC or 0 VDC to 10 VDC (field-selectable).
• Dimensions: 4.7 in. x 3.3 in. x 1.15 in. (119 mm x 84 mm x 29 mm).
• Enclosure Material: White ABS/PC, rated IP30 (NEMA 1).
• Operating Conditions: 32°F to 122°F (0°C to 50°C), 5% to 95% RH noncondensing.
• Lifespan: Estimated 15 years for the CO2 sensor.

Applications

The CD-WAD-00-2U is ideal for demand-controlled ventilation (DCV) and general environmental monitoring in:

• Commercial Office Buildings: To maintain air quality and optimize HVAC energy efficiency based on occupancy.
• Educational Facilities: Ensuring proper CO2 levels in classrooms to support student productivity and health.
• Indoor Farming and Greenhouses: Monitoring CO2 levels to enhance plant growth and productivity.
• Laboratories and Healthcare: Providing precise environmental data for sensitive indoor environments.
• Industrial Facilities: Managing air quality in production areas requiring controlled CO2 and temperature levels.