Dräger VarioGard® 3300 IR Transmitter Flammable Gas Detectors

Dräger VarioGard® 3300 IR Transmitter

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Dräger VarioGard® 3300 IR Transmitter

​The Dräger VarioGard® 3300 IR is a digital transmitter with an integrated infrared optical DrägerSensor®. It detects the flammable gases methane and LPG in the ambient air. This affordable system component makes it easier for you to configure a gas warning system.

Digital function

​The Dräger VarioGard 3300 IR is connected with the controller via a digital VarioGard bus. This is how it is supplied with electricity and how it transmits its measuring results. You can easily control the entire VarioGard system via the VarioGard bus.

High reliability

​The VarioGard 3300 IR is equipped with an infrared optical DrägerSensor. This sensor measures the concentration of flammable gases in the ambient air. The measured values are transmitted digitally to the controller and displayed there. An alarm is triggered if the gas concentration exceeds one or more of the configured limit values.

Easy operation

​Operation is extremely easy. You can make all configurations comfortably from the controller using VarioGard software. You can configure and monitor four current limit values and four averages over time for each transmitter. The alarms are optically and acoustically displayed on the transmitter and transmitted to the controller. A three-colour LED indicates the operating status of the transmitter. The calibration is controlled using a magnetic wand via contact points.

Individually configurable

​The VarioGard 3300 IR is adaptable to your needs. This means that you have different gas libraries available depending upon the desired use. It detects LPG for garages and CH4 for methane monitoring that does not require explosion protection. In addition, you can place the cable inlets on all four sides of the transmitter. The transmitter can be mounted vertically as well as horizontally.


Brochure: The comprehensive gas warning system for your building (PDF)
Brochure: The comprehensive gas warning system for your building (PDF)

The Dräger VarioGard central unit is the centre of an affordable and modular gas warning system. Many different transmitters and modules can be connected to the VarioGard central unit.


Gas Dispersion Brochure, en
Gas Dispersion Brochure, en


IFU VarioGard - 9033185 de-me
IFU VarioGard - 9033185 de-me

These instructions for use are provided for informational purposes only. Please always read and comply with the instructions for use delivered with the product.


More than the sum Brochure, en
VarioGard 3300 IR Product Information, en-master

Technical Data

Key Facts

Response time
Cable entry
M20 x 1.5
Intrinsic Safety
Increased Safety
4-20 mA

Technical Data

Power Supply
16 to 32 V DC, 3-wire
Temperature (operation)
-20°C - 50°C
10 to 95 % r.h., non-condensing
Pressure (hPa)
700 - 1300
Dimensions (H × W × D)
0.12x0.11x0.06 m
1 Kg
Housing Material
Degree of protection (IP class)


CE marking
Performance approval
Shipping approval

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Dräger Safety AG & Co. KGaA

​Branch​ ​Office
P.O.​ ​Box​ ​505108
Dubai,​ ​United​ ​Arab​ ​Emirates 

+971 4 42 94 600

​F:​ ​+971​ ​4​ ​42​ ​94​ ​699
Not​ ​all​ ​products,​ ​features,​ ​or​ ​services​ ​are​ ​for​ ​sale​ ​in​ ​all​ ​countries.​ ​Please​ ​contact​ ​your​ ​local​ ​Dräger​ ​representative​ ​for​ ​more​ ​information.