EC28 B Transmitter

With Modbus Suitable for Use in Ex Zones

Whenever toxic gases, oxygen or hydrogen are to be monitored and current measured values are to be transmitted digitally, the EC28 B transmitter combined with GfG‘s proven control units is a reliable and economical solution. This ATEX-certified transmitter means it can be used even in potentially explosive atmospheres.

Functional Safety
The hardware of the EC28 B 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 are listed in the overview of gases.

Communication and Service
Communication is carried out via the RS-485 industry standard with Modbus protocol. The Smart Sensor technology allows for the quick and easy replacement of the sensor. Adjustments can be made using the RC2 remote control (one-man calibration).

Remote Control RC2 (optional)
Gases like ammonia and hydrogen are lighter than air. Transmitters with these sensors are therefore installed near the ceiling. To simplify servicing, these transmitters can be equipped with a permanently installed cable meaning that the RC2 remote control can be connected for maintenance work and settings can be made from ground level. The display of the RC2 remote control shows the same information as would be shown by the EC28 versions with display. This makes inspection, maintenance and calibration much easier.

Reliable Measurement & Minimal Operating Costs
The sensor and built-in temperature compensation ensure the highest 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 sulphide
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 Sulphur dioxide
Other gases on request.


Extensions and accessories

Test gases

Test gases

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

Accessories EC28 B

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