Gas detector installation specifications

Combustible gases and vapors encountered in confined spaces may come from several sources, such as bacterial differentiation, replacement, residue, and operating products.Follow chinagasalarm.com to see the details.

Residual factors include transpiration of residual (liquid or sludge) components, products of chemical processes, and desorption of building materials. Desorption of well walls or other building materials requires special consideration. It may produce all kinds of harmful gases far beyond the limits of exposure, and the desorption of substances that can constitute a mixture of combustibles should be more noticed. At this time, it is necessary to detect and alarm the concentration of combustible gas with a combustible gas alarm.

1. When using natural gas, artificial gas or a mixture with a specific gravity of less than 0.75, the distance between the flammable gas detector and the device at the center of the release source should not be greater than 4m, the distance between the two detectors should not be greater than 8m, and the distance from the vent should be greater than 0.5m. When the space height exceeds 4m, a gas collecting hood or a layered detector should be provided. The gas collecting hood should be placed at an angle of about 4 m above the release source. The area of ​​the gas collecting hood should not be less than 1 m2, and the detector device should be inside the gas collecting hood. When the gas collecting hood is not provided, the detector can be arranged in two layers, the upper layer is within 0.3 m from the top plate, and the lower layer is about 4 m above the release source.

2. When using petroleum liquefied gas or a mixture with a specific gravity greater than 0.75, the distance between the flammable gas detector and the horizontal device at the center of the release source should not be greater than 3 m, and the distance between the two detector devices should not be greater than 6 m, and should be set at a corner or the like. The part of the flow.