EC28 DAB Transmitter

With Display, Alarm and Bus for Use in Ex Zones

The EC 28 DAB transmitter combined with one of GfG's reliable controllers is the perfect solution if you want to monitor toxic gases, oxygen or hydrogen and need the current measured values to be displayed locally and tranmitted digitally simultaneously. It is also capable of issuing an alarm on site. Its ATEX-certified design means it can be used even in potentially explosive atmospheres.

Functional safety
The EC28's hardware complies with the European Functional Safety Standard DIN EN 61508-2: 2011 for many gases. The SI levels (up to SIL3) in single channel (1oo1) or redundant (1oo2) use depend on the gas type and the sensor.

Communication and service
The EC28 DAB communicates via RS-485 industry standard with Modbus protocol. Its Smart Sensor technology enables quick and easy sensor replacement. Adjustments can be made using the RC2 remote control (one-person calibration).

Display, control buttons and alarms
The transmitter features a 2.2 inch LC display and three control buttons. In normal operation, the display shows the measured value or information on faults or alarms. The operating parameters (measured gas, measuring range, limit values, etc.) can also be accessed using the intuitive button controls. The EC28 DAB has highly visible, red alarm LEDs and a loud, integrated buzzer (90 dB). Costs for additional, ex-protected alarm devices can therefore be eliminated.

Reliable measurement & minimal operating costs
The sensor and built-in temperature compensation guarantee high measuring accuracy. The long sensor service life and low maintenance requirements ensure minimal operating costs.

Detectable gases

AsH3 Arsine
B2H6 Diborane
Br2 Bromine gas
C2H4O Ethylene oxide
Cl2 Chlorine
ClO2 Chlorine dioxide
CO Carbon monoxide
COCl2 Phosgene
H2 Hydrogen
H2S Hydrogen sulfide
HCl Hydrogen chloride
HCN Hydrogen cyanide
HF Hydrogen fluoride
NH3 Ammonia
NO Nitrogen monoxide
NO2 Nitrogen dioxide
O2 Oxygen
O3 Ozone
PH3 Phosphine
SiH4 Silane
SO2 Sulfur dioxide
Other gases on request.


Extensions and accessories

Test gases

You can find an overview of our test gases here
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Accessories EC28 DAB

Here you'll find the complete list of accessories for the EC28 DAB
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