GfG Gesellschaft für Gerätebau mbH

Dortmund,  Germany
https://www.gfgsafety.com/int/
  • Booth: R8025

GfG - Trusted Gas Detection Technologies Made in Germany

Overview

GfG – Gesellschaft für Gerätebau mbH, headquartered in Dortmund, is among the world’s leading manufacturers of portable gas detectors and fixed gas detection systems. With its solutions, the company makes a vital contribution to occupational safety and environmental protection worldwide.

With more than 60 years of experience in the development, production, and marketing of instruments for detecting toxic gases, explosive gas mixtures, and oxygen-deficient atmospheres, GfG has built a trusted reputation. Its long-standing customers include industrial companies such as semiconductor manufacturers, food producers, research institutions, fire departments, and civil protection organizations.

All GfG products are still manufactured at the company’s headquarters in the heart of Germany’s Ruhr region – Hightech Made in Germany. GfG is recognized as one of Germany’s Hidden Champions and maintains a global presence with 11 subsidiaries and an extensive network of local distribution partners.

  Products

  • D-ReX - Gas Detector Series
    The D-ReX is a versatile DIN-rail gas transmitter for semiconductor and industrial use. With diffusion, remote or extractive sampling, PoE/Modbus connectivity, and optional pyrolyzer support, it delivers reliable and flexible gas detection....

    • Overview

    The D-ReX is a modular transmitter designed for the reliable detection of gases used in semiconductor manufacturing (e.g. AsH₃, silane, ammonia, chlorine), as well as a wide range of toxic, corrosive, and combustible gases. Its design supports diffusion, remote, or extractive sampling, with integrated Line Integrity Monitoring (LIM) to prevent unnoticed leaks in sampling lines.

    User Interface & Connectivity

    A 2.4-inch full-color TFT display provides clear readouts and multilingual support for intuitive operation. Maintenance is simplified through Bluetooth app connectivity and hot-swappable sensor cartridges. With Power over Ethernet and compatibility with Modbus/TCP, Modbus/RTU, or 4–20 mA outputs, the D-ReX integrates seamlessly into industrial infrastructures.

    Key Benefits

    • Flexible sampling options (diffusion, remote, extractive with LIM)

    • Smart sensors for semiconductor process gases (e.g. AsH₃, silane, ammonia, chlorine)

    • Easy maintenance with Bluetooth app and hot-swap cartridges

    • Expandable safety design with up to five integrated relays

    • Optional Py-ReX module for measuring otherwise undetectable gases like NF₃

  • Py-ReX - Pyrolyzer Add-on
    The Py-ReX is a pyrolyzer add-on for the D-ReX transmitter. It thermally converts electrochemically inactive gases such as NF₃ into measurable components, ensuring reliable detection for semiconductor manufacturing applications....

    • Purpose

    The Py-ReX extends the D-ReX’s detection range by enabling the measurement of gases that cannot be detected directly. It is particularly valuable in semiconductor manufacturing, where gases like NF₃ play a critical role.

    Operating Principle

    Installed in-line with the D-ReX PoS, the Py-ReX uses a heated quartz filament to thermally decompose NF₃ into measurable components. These are then quantified by the connected D-ReX sensors, ensuring accurate and reliable monitoring.

    Key Advantages

    • Enables precise detection of NF₃, a key semiconductor process gas

    • Seamless in-line integration with D-ReX PoS systems using the same pump and infrastructure

    • Compact DIN-rail design with robust industrial reliability

    • Enhances process safety and compliance by covering gases otherwise undetectable

Categories

203 Equipment, Inspection & Measurement
  • Leak Detection Systems - Vacuum or Gas
    • 400 Components, Parts & Accessories
  • Sensors
    • 401 Sub-systems
  • Process Monitoring systems
    • 500 Factory Monitoring & Control Systems (FMCS)
  • Gas Monitoring Equipment; RGA's; TGO compliance
    • 900 Support Products
  • Safety
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