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Draeger VarioGard 3×00

Dräger VarioGard 3×00 Transmitter with integrated sensor for gas detection in ambient air. Inexpensive system component for building a simple digital gas warning system.


Digital Funktional Safety

​The Dräger VarioGard 3×00 Transmitter is a component of the VarioGard
gas warning system. A VarioGard system is comprised of a central unit
and various components connected to and supplied by a digital VarioGard

Simple Handling

Operation is extremely simple. All necessary settings are performed via
VarioGard software from the central unit. Four actual limits and four
time averaged values may be set and adjusted for every Transmitter.
Alarms are visually and acoustically indicated by the Transmitter and
transmitted to the central unit. The three-color LED indicates the
operating status of the Transmitter. The calibration procedure is
performed via a magnetic wand and contact pads.

High Realiability

​Field-proven DrägerSensors in the Dräger VarioGard 3×00 Transmitter
measure the concentration of noxious gases in the ambient air. The
measured values are digitally transmitted to the central unit for
visualisation. If the value exceeds
predefined limits an alarm will be triggered.

Flexible Housing

Two housing version are available. An inexpensive plastic and a
extremely sturdy metal housing. Cable inlets may be attached on all
transmitter sides. The transmitter may be mounted both horizontally and


Brochure: Gas List 2015 (PDF)

List of detectable gases and vapours.

Brochure: Functional Safety and gas detection systems (PDF)

Safety Instrumented Systems are used to reduce the risk for the protection of people, plants, and environment.

Brochure: More than the sum of their components (PDF)

?For over 70 years, Dräger has been one of the technology leaders in gas detection.