Medical Air Guard

The Medical Air Guard monitors the purity of medical compressed air. Impurities are measured in accordance with the thresholds as defined by the European Pharmacopoeia and ISO 7396-1.

Continuous and accurate control

The Medical Air Guard System allows you to continuously monitor the content of gaseous impurities, the oxygen concentration and the dew point of the medical compressed air. The Medical Air Guard VOC also measures the level of organic compounds, which is used to determine the residual oil content. All measurement values are displayed directly on the sensor.

The system issues an automatic alarm as soon as a preset threshold as defined by the European Pharmacopoeia is exceeded. The system reliably generates an alert even if the contamination is transient. All measurement data and alarms are provided via an interface for further evaluation. This means that the compressed air quality can be documented seamlessly.

  • Continuous monitoring of the purity of medical compressed air
  • Automatic alarm when thresholds are exceeded
  • Additional customer-specific configurable alarms
  • Compatible with Dräger Alarm Management System
  • Seamless documentation capability

Medical air purity

The standard for the purity of compressed air for medical applications is defined in the European Pharmacopoeia. Medical compressed air is a pharmaceutical which is administered directly to the patient. This means that it is subject to regular testing by the responsible hospital pharmacist.

High quality sensors

The Medical Air Guard uses proven Dräger sensor technology. Electro-chemical sensors measure the content of CO, SO2, NO, NO2 and O2. The CO2 content is measured with an infrared sensor. A special ceramic humidity sensor is used to measure the extremely low dew points. The Medical Air Guard VOC version also uses a photoionization sensor to detect volatile organic compounds, in order to monitor the oil vapour content of the air. Each sensor is equipped with a display which shows the respective current measurement value.

Individual alarms

The system is equipped with a central, processor-controlled alarm unit. The alarms can be transmitted either via potential-free contacts or the Dräger Alarm Management System. This allows them to be displayed, for example on Dräger alarm monitors, anywhere in the hospital. Customer-specific alarm thresholds can be individually defined and reliably monitored as well.

Seamless documentation

Thanks to its exceptional integration capability, the Medical Air Guard offers completely new options for evaluation and documentation. All measurements and triggered alarms can be transmitted to your building management center via the Dräger Alarm Management System. An optional data logger for seamless documentation of data and measurement curves is also available.


Medical Air Guard Product Information, en
Medical Air Guard Product Information, en


GMS System Brochure, en
GMS System Brochure, en

Because every breath is vital - Dräger Gas Management Systems for hospitals.


Brochure: Medical Air System (PDF)
Brochure: Medical Air System (PDF)

Safe ventilation starts at the medical air plant


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Dräger Danmark A/S

​Lyskær​ ​9
2730​ ​Herlev

+45 44 50 00 00