Gas Detectors - ExDetector HC-100

  • Detection of combustible gases and vapours
  • Measuring range: 0–100 % LEL
  • Catalytic combustion measuring principle
  • ATEX-conformity for Zone 1 and 2
  • 3-wire technology (24 V DC, 4–20 mA, ground)

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  • The ExDetector HC-100 is a gas measuring and alarm system designed for detecting combustible gases and vapours in hazardous areas. It uses catalytic combustion as its measuring principle, providing a linear 4-20 mA signal. The system includes a probe, evaluation system, and controllable devices such as fans, warning screens, and solenoid valves.
  • It is ATEX-conformity for use in zones 1 and 2, with options for wall mounting (HC100-M) or duct mounting (HC100-T/HC100-K). The system offers safety measures through technical and organisational actions, including visual and audible warnings.
  • The HC100-M is a standard wall-mounted device, while HC100-T and HC100-K are duct-mounted with separate transmitters. The system is designed for reliable operation in hazardous environments, with features like one-man calibration, 3-wire technology, and a wide temperature range of -20°C to +55°C.

Use Cases

  • Measurement and indication of the actual concentration of potentially explosive gases and vapours
  • Monitoring and warning of these gases
  • Triggering safety measures (fans, disconnections, visual and audible alarms)

Capabilities

  • Continuous detection of combustible gases and vapours in air
  • Operation in Zone 1 and Zone 2 hazardous areas
  • Electrical output via 4–20 mA for connection to certified evaluation systems
  • Supported mounting configurations: wall-mounted and duct-mounted variants
Bieler + Lang GmbH Bieler + Lang GmbH is a German gas detection systems manufacturer, based in Achern, with over 50 years of experience specifically in hydrogen leak detection technology. The company's ExDetector HC 100 and HC 150 sensors use catalytic combustion (pellistor) technology to detect hydrogen leaks as a percentage of the lower explosion limit (%LEL), since hydrogen's odorless, colorless nature and inability to be detected by infrared sensors make specialized detection essential; its addressable and aspirating detectors serve safe areas, ATEX/IECEx explosive zones, and hard-to-access spaces like clean rooms. Bieler + Lang's ExDetector X5 combines up to two sensor heads with contactless one-man calibration and supports detection of over 400 gases, while the GMC 8034 evaluation unit serves as a compact control center for gas detection systems. All devices are developed, manufactured, and calibrated in-house under strict quality standards for industrial, research, and energy technology applications.

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