Dräger REGARD-1

Single channel 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-1 is a standalone, self contained single channel control system for the detection of Toxic, Oxygen and Ex hazards. The control system is fully configurable for a single input from either a 4 to 20 mA transmitter or a Dräger Polytron SE Ex measuring head.


High flexibility

  • The Regard-1 can either be connected to a 4-20-mA transmitter or to Polytron-SE-Ex mV sensing heads. There are three fully configurable alarm relays: rising or falling, latching or non-latching. The alarm status is displayed via three LEDs. They will flash with a new alarm, light up continuously to display an acknowledged alarm situation or extinguish if there is no alarm. The gas concentration is displayed continually on a large LC display. If the alarm thresholds are exceeded or if a fault occurs, the integrated audible alarm will sound. To indicate a transmitter or system fault, a fault relay is provided, a separate fault led is provided on the panel which will flash under new fault condition, light continuously under acknowledged fault condition or will be extinguished under normal or healthy conditions. During maintenance, the maintenance or inhibit relay can be used to report this special status via a remote display.

Useful additions

  • The Regard-1 can be equipped with an optional TWA control module. This module enables the output of a TWA alarm as well as the repeat of a 4 to 20mA signal and the alarm states via a digital interface. To ensure the operation of the Regard-1 during a power failure, two batteries of 1.2 Ah each can be inserted into the integrated battery compartment. Depending on the transmitter used, they will enable an operating time from 30 minutes up to two hours. The batteries are re-charged by the Regard-1.

Robust enclosure

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


  • In accordance with the ATEX directive, the system is certified to EN 61779-1/4/5 and EN 50104 for explosion monitoring and oxygen measuring and, therefore, also suitable for applications which require the measuring function for explosion protection (primary measure in accordance with EN 1127-1, paragraph 6). In addition, the system was also tested independently to EN 45544 for the monitoring of toxic gases.

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