EC28 DA Transmitter

With Display and Alarm for Use in Ex Zones

Whenever toxic gases, oxygen or hydrogen need to be monitored and you want a display of the current measured value as well as an alarm to be given on site, the EC28 DA transmitter is the best choice - especially when combined with GfG‘s reliable controllers. The 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 DA  communicates using a 4-20 mA signal. Its Smart Sensor technology allows for fast and easy sensor replacement. Adjustments can be made using the RC2 remote control (one-person calibration).

Display, control buttons and alarms
The transmitter is controlled via 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 be also be accessed using the intuitive control buttons. The EC28 DA has highly visible, red alarm LEDs and a loud, integrated buzzer (90 dB). Any costs for additional, ex-protected alarm devices can therefore be eliminated.

Reliable measurement & minimal operating costs
Its sensor and the 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 Ozon
PH3 Phosphine
SiH4 Silane
SO2 Sulfur dioxide
Other gases on request.


Extensions and accessories

Test gases

Find an overview of our test gases here
» more

Accessories EC28 DA

Find the complete list of accessories for the EC28 DA here
» download PDF

Our experts are happy to answer your questions! How to find us