Gas Detection & Environmental

Fixed Gas Detection

Fixed point and open-path detectors, transmitters and control panels.

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ATEX 7 EN 5 IEC 4

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Buying guide

How to choose fixed gas detection systems

Fixed gas detection monitors process areas, plant rooms and perimeters continuously, providing alarms and automatic actions. System design must account for gas properties, layout, airflow and the required safety integrity.

Detector technology

Catalytic or infrared sensors for flammable gas, electrochemical sensors for toxic gas, and open-path infrared (EN 60079-29-4) for perimeters and large areas.

Placement

Place detectors according to gas density and likely leak sources: low for heavy gases, high for light gases such as hydrogen. A gas dispersion study helps for large sites.

Safety integrity

Where detectors form part of a safety function, specify SIL capability (IEC 61508 SIL 2) and EN 50271 compliance.

Hazardous area and climate

Detectors must be certified for the zone (e.g. Ex d flameproof). Use sunshades, weather protection and dust guards in hot outdoor locations.

Maintenance

Calibrate fixed detectors at manufacturer intervals using calibration adapters, and check sensor life.

Personal Protective Equipment

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