VAISALA GMD20D Duct Sensor Carbon Dioxide Transmitter GMD29D CO2

( Brand: Vaisala ), ( Manufacturer Part Number: GMD20D ), ( Model: GMD29D ), ( Type: Duct Co2 Sensor ), ( Power Source: Corded Electric ), ( Color: Gray ), ( Country/region Of Manufacture: Finland )

Review VAISALA Co2 Duct Sensor Carbon Dioxide Transmitter

The Vaisala GMD20D and GMD29D CO Duct Sensors are advanced carbon dioxide transmitters designed for demanding HVACVentilation, Air Conditioning and Refrigeration (HVACR) applications. These sensors are an essential component in maintaining optimal indoor air quality, particularly in commercial and industrial environments.

The GMD20D and GMD29D sensors feature a non-dispersive infrared (NDIR) CO measurement principle. This technology offers high accuracy and reliability, even in challenging environments with varying temperatures and humidity levels. The sensors are capable of measuring CO concentrations from 0 to 10,000 parts per million (ppm) with an industry-leading accuracy of (2.5 0.015% of reading).

These compact, rugged sensors are designed for installation in ducts and plenums. The GMD20D is designed for low air velocities, while the GMD29D is suitable for higher air velocities. Both sensors come with a factory-installed, replaceable CO filter. The filter ensures accurate readings by preventing potential interferences from other gases, such as water vapor, hydrocarbons, or dust.

The sensors communicate via a 4-20 mA analog output signal or Modbus RTU protocol. This flexibility allows seamless integration with various building automation systems. The sensors also feature a self-diagnostics function that reports any issues, ensuring early detection and minimizing downtime.

The Vaisala GMD20D and GMD29D CO Duct Sensors are built to withstand harsh environments. They operate in temperatures ranging from -40 C to 85 C (-40 F to 185 F) and have an IP65-rated enclosure that protects against dust and water jets.

In summary, the Vaisala GMD20D and GMD29D CO Duct Sensors are reliable, accurate, and versatile carbon dioxide transmitters designed for HVACR applications. Their advanced measurement technology, rugged design, and flexible communication options make them an ideal choice for maintaining optimal indoor air quality in commercial and industrial environments.

Vaisala GMD20D and GMD29D CO2 Duct Sensor: A Comprehensive Analysis

The Vaisala GMD20D and GMD29D are advanced Carbon Dioxide (CO2) transmitters designed for use in duct mounting applications. These sensors are widely used in HVAC, ventilation, and indoor air quality systems to monitor and control CO2 levels. In this analysis, we will discuss the key features, advantages, and disadvantages of these sensors.

- High accuracy and reliability due to FTIR (Fourier Transform Infrared) technology

- Compact design for easy installation in ducts

- Digital communication interfaces like Modbus, HART, and PROFIBUS

a) High Accuracy: The sensors utilize FTIR technology for CO2 analysis, providing high accuracy and stability even in challenging environments.

b) Compact Design: The sensors have a small and lightweight design, making them ideal for duct mounting applications.

c) Digital Communication Interfaces: Providing various communication options allows for seamless integration with various building automation systems.

a) Cost: The high-end technology and compact design contribute to a relatively high price point compared to other CO2 sensors.

b) Calibration: Regular calibration is necessary to ensure accurate readings, which may involve additional costs and maintenance time.

In conclusion, the Vaisala GMD20D and GMD29D CO2 duct sensors offer exceptional accuracy and reliability through advanced FTIR technology. Their compact design and digital communication interfaces make them versatile and easy to integrate with various systems. However, the high cost and the need for regular calibration may be considered disadvantages for some applications.

Recommendation: If your priority is high accuracy and reliability in monitoring CO2 levels in duct applications, and you are willing to invest in a premium sensor, the Vaisala GMD20D and GMD29D are excellent choices. For applications with lower budgets or less stringent accuracy requirements, other CO2 sensors with different technologies may be more suitable.

Details:

Carbon Dioxide Transmitter. CO2 Duct Sensor. 4 units available: Serial #.

part #: gmd20d prices

• $361.86-$580.09

specifications hvaceye:

• brand: Vaisala
• mpn: Gmd20d
• model: Gmd29d
• type: Duct Co2 Sensor
• power source: Corded Electric
• color: Gray
• country/region of manufacture: Finland

shipping hvaceye:

• cost: $14.40
• service: USPS Ground Advantage
• transit: 4-8 Days
• carrier: USPS
• type: Calculated
• class: Standard

offer hvaceye:

• options: Ship-to-home
• best offers: True
• sold: 0
• availability: In Stock
• started: May 2, 2025
• quantity: 1

returns hvaceye:

• paid by: Buyer
• policy: Returns Accepted
• method: Money back
• time: 30 Days

seller hvaceye:

• rating: 100.0%
• city: Ashland, Massachusetts
• # reviews: 228

general hvaceye:

• condition: New
• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Sensors

payments hvaceye:

• other
• wallet: Apple-pay
• credit card: Diners-club

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