Locating sensors for leak detection

A key factor in reliable leak detection is to locate your gas sensor between the potential leak source and the ignition site or location of people. Sensors don’t detect in a dispersive manner. They rely on single point monitoring. The leak must reach this single monitoring point, in order to be detected. This is precisely the reason why the sensor location and number of sensors installed is of utmost importance.

Mount the sensor at the appropriate height for the density of the gas you want to detect.

If the target gas is heavier than air*, position it:

• Near the ground
• No lower than 457 mm (18 inches), and in some cases, no higher than 914 mm (36 inches)

If the target gas is lighter than air*, position it:

• Near the ceiling, roof or out-take fan

*Air currents often result in inconsistent air circulation. Always be aware of areas that could facilitate irregular air currents and abnormal build-ups of gas (gas pockets).

Sensor installation should be near the potential leak source. Readings take longer to register with slow dispersion liquids if the sensor is installed too far from the leak source.

Ambient temperature can greatly affect the sensor's performance. Whether too hot or too cold, make sure all sensors and electronics are operating within their ambient temperature limitations.

Be sure to anchor any sensor installation to a firm base. Securing the sensor to a vibration source compromises the life of the sensor and may void the sensor's warranty.

Unless installed with moisture protection accessories, sensors should be mounted away from moisture sources. When exposed to excessive moisture or direct water spray, sensors may fail, or experience shortened life span.

Ensure the sensor to be installed is not sensitive to or dependent upon its mounting orientation in order to operate effectively.

Mount sensors away from areas prone to dust and dirt. If not feasible, make sure the optional dust protection accessories are fitted.