CD-310-U00-00U Johnson Controls Room Carbon Dioxide, Humidity, and Temperature Transmitters

Overview

The Johnson Controls CD-310-U00-00U is a wall-mounted room carbon dioxide (CO2), relative humidity (RH), and temperature transmitter designed for environmental monitoring and control in commercial HVAC systems. It utilizes a non-dispersive infrared (NDIR) sensor for CO2, a precision thermistor for temperature, and a thermoset polymer-based capacitance sensor for humidity, providing three separate field-selectable analog outputs to a Building Automation System (BAS).

Features

• Triple Sensing: Measures CO2 levels, relative humidity, and ambient temperature within a single low-profile enclosure.
• Advanced CO2 Sensing: Employs dual-channel optics and long-term adjustment signal processing to accurately monitor CO2 concentrations.
• Self-Calibration: Features an integrated self-calibration mechanism to correct sensor drift in typical commercial environments.
• Analog Outputs: Provides linear, field-selectable 0-5 VDC or 0-10 VDC output signals for all three parameters.
• Easy Installation: Designed with a versatile backplate containing multiple mounting hole configurations for simple direct wall or electrical box installation.

Specifications

• Power Supply: 20-28 VDC/VAC, non-isolated half-wave rectified.
• CO2 Measurement Range: 0 ppm to 2,000 ppm default, field-adjustable up to 10,000 ppm.
• CO2 Accuracy: ±30 ppm + 3% of the measured value.
• Humidity Measurement Range: 0% to 100% RH, non-condensing.
• Humidity Accuracy: ±2% RH.
• Temperature Measurement Range: 32°F to 122°F (0°C to 50°C), field-selectable.
• Temperature Accuracy: ±0.36°F across the operating range.
• Output Signals: Three field-selectable 0-5 VDC or 0-10 VDC analog outputs.
• Dimensions: 4.7 in. x 3.3 in. x 1.15 in. (119 mm x 84 mm x 29 mm).
• Enclosure Rating: IP30 (NEMA 1) white ABS/PC blend.

Applications

• Commercial office buildings utilizing demand-controlled ventilation (DCV) to optimize energy efficiency.
• Educational facilities and schools to maintain healthy indoor air quality for students and staff.
• Healthcare spaces, laboratories, and pharmaceutical environments requiring precise climate monitoring.
• Manufacturing plants and warehouse environments to ensure safety and comfort standards.
• Full integration with Building Automation Systems (BAS) for centralized facility management.