Duct CO2 Transmitter GMD110
Product Description
Vaisala GMD110 – Duct Mount Carbon Dioxide Transmitter
The Vaisala GMD110 is a high-accuracy duct-mounted sensor designed for reliable carbon dioxide measurement in ventilation ducts and HVAC systems. It is especially suitable for demand-controlled ventilation and maintains excellent accuracy and stability even in challenging environments.
Equipped with the proven CARBOCAP® single-beam, dual-wavelength NDIR sensor, the GMD110 ensures stable and precise CO₂ readings unaffected by dust, water vapor, or chemicals. Measuring CO₂ concentration directly in the duct eliminates the risk of errors caused by leaks or incorrect airflow direction.
The transmitter provides ±40 ppm CO₂ accuracy, supports both analog outputs and Modbus RTU interface, and is housed in a rugged IP65 enclosure. Each unit is individually adjusted and delivered with a traceable ISO9001 calibration certificate. On-site calibration can be performed using the Vaisala HM70 handheld meter or the Vaisala Insight PC software.
Key Features & Benefits:
- Reliable CO₂ measurements for HVAC and duct applications
- CARBOCAP® NDIR sensor for superior long-term stability
- Accuracy ±40 ppm CO₂
- Excellent stability even in demanding environments
- Analog output and Modbus RTU interface
- IP65-rated housing
- Delivered with traceable calibration certificate
Technical Specification
The Vaisala GMD110 is designed for duct installation in HVAC systems and provides accurate measurement of carbon dioxide concentration in air. The measurement range typically extends from 0 to 5,000 ppm, and the sensor achieves an accuracy of ±40 ppm. The measurement is based on the proven Vaisala CARBOCAP® technology, a single-beam, dual-wavelength NDIR sensor that offers excellent long-term stability.
The measurement results are available through both an analog current output (4…20 mA) and a digital Modbus RTU interface. The device is housed in a rugged IP65 enclosure, which protects it against dust and splashes, making it suitable for use in demanding environments.
The readings remain stable and reliable even in the presence of dust, water vapor, or chemicals. Each sensor is individually adjusted and delivered with a traceable ISO9001 calibration certificate. If required, the sensor can be recalibrated on-site using the Vaisala HM70 handheld meter or the Vaisala Insight PC software. This makes the GMD110 an excellent choice for demand-controlled ventilation and for precise CO₂ monitoring in HVAC ducts.