CD-W00-N0-2U Johnson Controls CO2 Transmitter

Overview

The Johnson Controls CD-W00-N0-2U is a room carbon dioxide (CO2) transmitter designed to monitor CO2 levels in indoor environments. Housed in an attractive, low-profile enclosure, it features a highly accurate and reliable non-dispersive infrared (NDIR) sensor that employs dual-channel optics and long-term adjustment signal processing technology. This delivers excellent measurement stability for both periodic and constant occupancy spaces, making it ideal for standard building automation and indoor air quality monitoring systems.

Features

• High-accuracy NDIR sensor utilizing dual-channel optics for minimal drift and long-term reliability.
• Integrated self-calibration feature to correct CO2 sensor drift over time.
• Built-in 1k platinum thin-film temperature sensor (Pt1000 RTD) for space temperature monitoring.
• Versatile, field-selectable analog output signals supporting 4 to 20 mA, 0 VDC to 5 VDC, or 0 VDC to 10 VDC.
• User-friendly configuration via an easy menu operation.
• White ABS/PC low-profile room enclosure rated at IP30 (NEMA 1).
• Convenient screw terminal block wiring accommodating 14 AWG to 22 AWG.

Specifications

• CO2 Measuring Range: 0 to 2,000 ppm
• Display Units: ppm for CO2, °C/°F (on compatible models)
• Temperature Sensor Accuracy: ±0.54°F (±0.3°C) @ 32°F (0°C)
• Ambient Operating Range: 32°F to 122°F (0°C to 50°C), 0% to 95% RH, noncondensing
• Storage Temperature Range: -40°F to 158°F (-40°C to 70°C)
• Current Consumption: 75 mA @ 24 VDC maximum, 150 mA @ 24 VAC maximum
• Output Drive: 550 ohms maximum for current output
• Dimensions: 5.45 in. x 3.33 in. x 1.05 in. (138.63 mm x 84.5 mm x 26.75 mm)
• Compliance: CE Mark, EMC Directive, and RoHS Directive compliant

Applications

• Demand Controlled Ventilation (DCV) strategies to optimize fresh air delivery and maximize energy efficiency.
• Commercial indoor air quality (IAQ) monitoring in education settings such as classrooms.
• Healthcare facility environmental control including hospital rooms.
• Integration into building automation systems (BAS) and rooftop air handling economizer control systems.