DGS GAS Detector FAQ

MCX FAQ

The Danfoss range of gas sensors and controllers protects human beings and systems in situations where toxic gases are used.

With the help of modern communication technology, fast alerting and reliable sensors, a quick reaction is possible in the event of gas leaks.

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Sensor Calibration

Calibration certificate

The sensor calibration certificate is normally included in the installation pack.

If you lose this certificate, you can request it from your sales representative by providing:

Code number, Serial Number and Manufactured date printed on the sensor head.

Calibration

Calibration period

When the DGS is provided, the sensor is already calibrated from the factory side.

The sensor has then to be re-calibrated depending on the gas used in the application.

Following the period recorded in the sensor head:

  • 60 months for CO2 infrared sensor
  • 12 months for HFC semiconductor sensor
  • 6 months for Propane pellistor sensor

Sensor recalibration

Yes, when the calibration expires there are 2 possible options:

  • Replace the sensor head
  • Re-calibrate the sensor. This operation resets the calibration period counter recorded in the sensor head.

Sensor life span

Life expectancy

Typical sensor lifespan:

  • Infrared (CO2) – 5-7 years
  • Electrochemical (NH3) – 2-3 years
  • Semiconductor (refrigerants) – 5-7 years

Propane sensor

Certification

No, the DGS for propane can only be used in a non-ATEX zone.