Dräger REGARD® 3900 Series

Self contained control system

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“Technology for Life” is the guiding philosophy. Whether in the operating room, in intensive care or emergency response services, Dräger / Draeger products protect, support and save lives.

Dräger offers its customers anaesthesia workstations, medical ventilation, patient monitoring as well as neonatal care for premature babies and newborns. With ceiling supply units, IT solutions for the OR, and gas management systems the company is at the customer’s side throughout the entire hospital.

Emergency response services, law and regulatory enforcement and the industry trust in Dräger’s integrated hazard management, in particular for personal protection and plant safety. This includes: respiratory protection equipment, stationary and portable gas detection systems, professional diving equipment and systems, as well as alcohol and drug impairment detection. In collaboration with its customers Dräger develops customized solutions, such as entire fire training systems, training concepts and workshops.

Dräger has about 13,500 employees worldwide and is currently present in more than 190 countries. The company has sales and service subsidiaries in over 50 countries. Its development and production facilities are based in Germany, Great Britain, Sweden, South Africa, the USA, Brazil, the Czech Republic and China.

The Dräger REGARD® 3900 is a standalone, self contained control system for the detection of Toxic, Oxygen and Ex hazards. The control system is fully configurable between 1 and 16 channels, depending upon the type and quantity of input/output boards installed.


Flexible design

  • The Regard 3900 can be equipped with up to four 4 – 20 mA input cards. Each input card can be connected to up to four gas detectors, either 2 or 3 wire, giving a maximum of 16 gas detectors per each Regard 3900. Each input module is equipped with three alarm relays.
  • These relays are designated as common alarms for the corresponding input card for “Fault”, “1st alarm” and “2nd alarm”. The 1st and 2nd alarm relays are fully configurable and can be set up as rising or falling and latching or non-latching.
  • In addition, the Regard 3900 can be equipped with up to two relay modules. Each relay module has eight additional relays.
  • In accordance with the ATEX directive, the first relay is always configured as a fault relay and cannot be changed. The other seven relays can be configured as individual, common or voting alarms. They can either operate as normally open or normally closed relays.
  • The alarm relays are acknowledged by operating a button at the front of the control unit.

Quick and easy configuration

  • The Config 3900 configuration software enables quick and easy configuration via a laptop or a PC. With new installations, the configuration can initially be carried out online and then loaded during commissioning. During maintenance the system configuration can be downloaded from the device to a PC for checking. The appropriate connection cable and the required software are available as accessories.

Robust enclosure

  • The robust IP65 enclosure enables the installation of the control system at virtually any location within a safe area.

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