CDT-2N40 – CO2 & Temperature Sensor for Classrooms and Offices | DLK

In high-rise buildings, maintaining accurate pressure control in HVAC, water supply, and fire protection systems is crucial to ensure safety and reliable operation. Among many options on the market, the Dwyer 629C-05-CH-P2-E5-S1 pressure sensor stands out due to its high accuracy, rugged construction, and ease of integration with Building Management Systems (BMS).

This device is a perfect fit for HVAC and BMS systems that require real-time air quality monitoring and control.

1. Key Features of the CDT-2N40 Sensor

Dual measurement of CO2 and temperature: Monitor two essential indoor air quality parameters with one compact device.

• High accuracy: Equipped with advanced sensing technology for reliable and long-term stable readings.
• Intuitive LCD display: Real-time visualization of CO2 levels (ppm) and room temperature.
• Modern, compact design: Wall-mountable and aesthetically suitable for offices and classrooms.
• Flexible output signals: Supports 0–10V or 4–20mA for seamless integration with HVAC and BMS systems.

2. Applications of the CDT-2N40 Sensor

• Classrooms: Maintains safe CO2 levels to enhance student concentration and reduce fatigue
• Offices: Improves air quality to boost employee productivity.
• Meeting rooms & conference halls: Ensures a comfortable atmosphere during extended meetings.
• Hospitals, libraries, shopping centers: Enhances indoor air safety standards in public spaces.

3. Installation Guide for the CDT-2N40 Sensor

3.1 Pre-Installation Preparation

• Check the product and included accessories.
• Prepare tools: screwdriver, drill, signal cables.
• Select a wall location away from direct airflow (AC vents, windows, doors).

3.2 Installation Steps

• Choose the installation height: Mount the sensor 1.2–1.5 meters above the floor, close to average breathing height.
• Secure the device: Fix the sensor firmly to the wall using screws.
• Connect wiring: Follow the technical wiring diagram to connect power and signal lines.
• Power up the system: Turn on the power and verify readings on the LCD display.
• Calibration (if required): Compare with a reference device to adjust any deviations.

3.3 Installation Notes

• Avoid placing the sensor near heat sources, windows, or direct airflow.
• Do not install in dusty or high-humidity areas.
• Clean the sensor periodically to maintain accuracy.

4. Benefits of Using the CDT-2N40 Sensor

• Protects health: Alerts when CO2 exceeds recommended thresholds, helping prevent fatigue and lack of focus.
• Improves learning & work efficiency: Clean air boosts alertness and productivity.
• Energy efficiency: HVAC systems operate smarter based on real-time data, reducing energy waste.
• Meets international standards: Supports compliance with ASHRAE and WELL indoor air quality guidelines.

5. DLK – Trusted Air Quality Sensor Distributor in Vietnam

DLK is a reputable supplier of genuine HVAC & BMS sensor solutions in Vietnam, offering products for CO2, temperature, humidity, pressure, and more. The CDT-2N40 by Dwyer is a standout product with DLK’s guarantees:

• 100% genuine products with full CO and CQ certification
• Fast nationwide delivery
• Competitive pricing and expert technical support
• Professional after-sales and maintenance services

6. Conclusion

The CDT-2N40 sensor is a smart and efficient solution for monitoring CO2 and temperature in enclosed spaces like classrooms, offices, and meeting rooms. It not only ensures healthy air quality but also contributes to improved concentration, comfort, and performance.

Contact DLK today to receive expert consultation and a quote for the CDT-2N40 genuine sensor tailored to your project needs.