EC28 Di Transmitter

Intrinsic Safety and Display for Toxic Gases, O2 and H2

Where toxic gases, oxygen or hydrogen are to be monitored in areas with a particular risk of explosion and measured values are to be read locally, the intrinsically safe EC28 Di transmitter along with GfG‘s control units is a reliable and cost-effective solution. The power supply and transmission of the measured values are carried out via two-wire cabling.

Intrinsically safe operation
Due to its intrinsically safe build, the EC28 Di can be used even in areas with a particularly high risk of explosion. A safety barrier (SB1 or Zener barrier; optionally available) has to be connected between the transmitter and the programmable logic controller (PLC) to convert the supply voltage to 24 V DC. This prevents the power lines from igniting within the Ex zone. The intrinsic safety of the EC28 Di is ATEX-certified and makes it suitable for applications up to Ex zone 0.

Communication and Service
Communication is carried out via a 4-20 mA signal. The Smart Sensor technology enables fast and uncomplicated replacement of the sensor.

Display and Control Buttons
The EC28 Di 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. In addition, the operating parameters (sample gas, measuring range, limit values, etc.) can be called up via the operating keys.

Remote Control RC2 (optional)
If the EC28 Di has to be mounted in a difficult-to-access location, the RC2 remote control facilitates servicing and adjustments (one-man adjustment). It displays the
same information that is shown on the transmitter‘s display.

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



Two-channel safety barrier for intrinsically safe transmitters
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Test gases

Test gases

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

Accessories EC28 Di

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