CMT200 – Accurate Carbon Monoxide (CO) Sensor for Parking Garages & Mechanical Rooms

CMT200 – Accurate Carbon Monoxide (CO) Sensor for Parking Garages & Mechanical Rooms

CMT200 – Accurate Carbon Monoxide (CO) Sensor for Parking Garages & Mechanical Rooms

Posted on: 22/08/2025

Carbon monoxide (CO) is a colorless, odorless, but highly dangerous gas at elevated concentrations. In enclosed spaces such as garages, underground parking lots, or mechanical rooms, continuous CO monitoring is mandatory for ensuring occupant safety. The CMT200 from Dwyer is a CO transmitter specifically designed for such environments. It features a replaceable electrochemical sensor, multiple output options, and easy integration into BMS or ventilation control systems.

1. Product Overview

CMT200 is a compact CO transmitter designed for wall or ceiling mounting. It operates based on an electrochemical sensing principle and offers analog output options of 4–20 mA or 2–10 VDC. With a typical measuring range of 0–200 ppm, it is suitable for both commercial and industrial applications.

Key Highlights:

  • Replaceable electrochemical sensor with long service life

  • Flexible output options: 4–20 mA or 2–10 VDC

  • Supports on-site calibration

2. Key Technical Specifications

  • Measurement Range: 0 – 200 ppm CO

  • Output: 4–20 mA or 2–10 VDC

  • Sensor Type: Electrochemical (typical lifespan: 3–5 years)

  • Operating Temperature: −20°C to 50°C

  • Response Time: < 45 seconds to 90% of final reading

3. Benefits of Using CMT200

The CMT200 not only delivers accurate CO detection but also helps reduce operational costs with its user-friendly maintenance design.

Practical Benefits:

  • Timely detection of CO levels to activate ventilation fans or trigger alarms

  • Seamless integration with building management systems (BMS/BAS)

  • Low maintenance costs with quick sensor replacement

4. Real-World Applications

The CMT200 is widely used in:

  • Garages & Underground Parking: Monitor vehicle exhaust emissions

  • Maintenance Shops & Repair Garages: Ensure safety during engine operation in enclosed areas

  • Mechanical Rooms: Detect CO from fuel-burning equipment

  • Public Spaces: Commercial parking structures, stations, terminals

5. Installation & Maintenance

To achieve optimal performance, install the CMT200 at breathing height (approximately 1.5–1.8 meters) and avoid direct airflow or proximity to entrances/exits.

Maintenance Checklist:

  • Periodically check output signal for consistency

  • Perform zero and span calibration every 6–12 months

  • Replace the sensor at end of life or when calibration fails

6. Purchase CMT200 from DLK

DLK supplies genuine CMT200 units with complete documentation and full technical support. Customers receive guidance in selecting the appropriate model, along with installation and maintenance assistance, ensuring the CO monitoring system remains reliable at all times.

With its robust design, accurate detection, and easy integration, the CMT200 is the ideal solution to protect people and property in enclosed environments.

OTHER POST