Description
The CMCD-200 utilizes two distinct sensing technologies:
Carbon Monoxide: A controlled potential electrolysis sensor for high-sensitivity detection of toxic combustion byproducts.
Carbon Dioxide: A Non-Dispersive Infrared (NDIR) sensor, which is the industry standard for stable and accurateCO_2 measurement without the risk of sensor “poisoning” common in electrochemical cells.
The unit features a large, backlit LCD that shows both gas levels simultaneously. It includes a built-in data logging function, allowing technicians to record gas levels over time to identify trends in air quality or intermittent equipment failures.
Applications
Air Quality & Safety Assessment: The CMCD-200 is typically used for “walk-through” inspections or stationary monitoring.
- Initialization: Power on the unit in a clean, outdoor environment if possible. The NDIR sensor usually requires a brief warm-up period to stabilize the infrared source.
- Calibration: Perform a zero-point adjustment for CO in fresh air. For CO_2, the unit can often be “baseline calibrated” to the outdoor atmospheric average (approx. 400–420 ppm).
- Monitoring: Carry the device into the target area. The display will update in real-time as you move between different zones (e.g., near a boiler vs. in an office area).
- Reporting: Use the data logging feature to capture a 24-hour profile of a room’s ventilation, which is particularly useful for identifying “sick building syndrome.”
