Overview: The EC28 DB Transmitter is designed for monitoring toxic gases, hydrogen, or oxygen in potentially explosive atmospheres. It features a local
display and digital transmission capabilities, making it suitable for integration with GfG's control units. The device is ATEX-certified and complies with the European Functional Safety Standard DIN EN 61508-2: 2011.
Specifications: The transmitter uses an electrochemical measuring principle and supports diffusion or gassing via a calibration adapter. It operates within a temperature range of -20 to +50 °C in Ex zones and -25 to +50 °C outside Ex zones, with humidity tolerance from 5 to 90% relative humidity. The device outputs signals via RS-485 and requires a power supply of 18 to 30 V DC. It is housed in a plastic casing with IP64 protection, measuring 115 x 203 x 55 mm and weighing 800 g.
Communication and Service: Communication is facilitated through the RS-485 standard with Modbus protocol. The Smart Sensor technology allows for easy sensor replacement. The transmitter includes a 2.2-inch LC display and three control buttons for displaying measured values, faults, or alarms. An optional RC2 remote control is available for servicing in hard-to-reach locations.
Variants: The EC28 series offers multiple versions to cater to different applications, including basic models, versions with displays, alarm horns, LED warning lights, Modbus interfaces, and intrinsically safe options.
Gas Detection and Safety Levels: The transmitter can detect a variety of gases, each with specific Safety Integrity Levels (SIL) for single-channel (1oo1) or redundant (1oo2) use. Gases include ammonia, chlorine, hydrogen chloride, carbon monoxide, ozone, and more.
Approvals and Certifications: The EC28 DB is marked with II 2G Ex eb mb [ib] IIC T4 Gb, indicating its suitability for use in explosive atmospheres. It adheres to the functional safety standard DIN EN 61508-2: 2011.
Contact Information: GfG Gesellschaft für Gerätebau mbH, Klönnestraße 99, 44143 Dortmund, Germany. Phone: +49 231 56400-0, Email:
[email protected].