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CO₂ Meter & Transmitter

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Duct Mounted CO2 Transmitter GMD10
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Vaisala GMD110 High-Accuracy Duct CO₂ Transmitter

The Vaisala GMD110 measures carbon dioxide directly inside ventilation ducts for precise HVAC control and demand-controlled ventilation.

  • CO₂ measurement range from 0 to 10,000 ppm
  • Accuracy of ±40 ppm from 0 to 3000 ppm
  • 4–20 mA, 0–5 V, 0–10 V or Modbus RTU output options
  • Analogue scaling of 0–2000, 0–5000 or 0–10,000 ppm
  • Fast response with less than two minutes to full specification
  • Heated CARBOCAP® sensor head helps prevent condensation
  • IP65 enclosure for demanding duct installations
  • Traceable calibration certificate included
Vaisala Transmitter Indigo300
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Vaisala Indigo300 Industrial Transmitter

The Vaisala Indigo300 is a rugged industrial transmitter for one Vaisala Indigo-compatible smart probe, providing local measurement display and up to three configurable analog outputs.

Its corrosion-resistant IP66 metal enclosure, flexible probe mounting and interchangeable probe design make Indigo300 suitable for humidity, temperature, dew point, CO2, moisture in oil and other demanding industrial measurements.

Vaisala Temperature and Humidity Logger VDL200
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Vaisala VDL200 PoE Data Logger for viewLinc CMS

The Vaisala VDL200 is a secure Power-over-Ethernet data logger for monitoring temperature, relative humidity, carbon dioxide and analog or Boolean inputs in controlled and GxP-regulated environments.

Designed for the Vaisala viewLinc Continuous Monitoring System, the VDL200 combines interchangeable smart probes, onboard memory and battery backup to provide reliable, gap-free environmental monitoring.

Duct Mounted CO2 Transmitter GM20
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Vaisala GMD20 Duct-Mounted CO₂ Transmitter –...

The Vaisala GMD20 Series was designed for carbon-dioxide measurement inside ventilation ducts and demand-controlled ventilation systems.

  • Discontinued legacy product; not recommended for new projects
  • Nominal CO₂ measurement range from 0 to 2000 ppm
  • GMD20 without display and GMD20D with local display
  • 0–20 mA, 4–20 mA and 0–10 V analogue outputs
  • Optional relay or LonWorks® interface on applicable configurations
  • IP65 electronics enclosure for duct installations
  • Use Vaisala GMD110 for new installations
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