Location of Gas Sensors- 10 Guidelines

Location of Gas Sensors- 10 Guidelines
To detect gases lighter than air, such as Methane and Ammonia, install detectors at a high level and consider using a collecting cone.
For gases heavier than air, like Butane and Sulphur Dioxide, position detectors at a low level.
Take into account the behavior of escaping gases influenced by natural or forced air currents. If suitable, place detectors in ventilation ducts.
When placing detectors, consider potential damage from natural events, such as rain or flooding. For outdoor installations, it is recommended to use a weather protection assembly.
In hot climates, where detectors may be exposed to direct sunlight, use a sunshade to protect the device.
Consider the process conditions, as gases like Butane and Propane are typically heavier than air but may rise when released from a process line at high temperature or pressure.
Position detectors slightly away from high-pressure areas to allow gas clouds to form; otherwise, gas may pass by in a high-speed jet without being detected.
Ensure detectors are easily accessible for functional testing and maintenance.
Install detectors with the sensor pointing downward to prevent dust or water from collecting on the sensor, which could block gas entry.
For open-path infrared devices, make sure there are no permanent obstructions blocking the IR beam. Short-term blockages by vehicles, personnel, or birds can be managed.
Ensure that structures used to mount open-path devices are stable and not prone to vibration.