The height issue of installing combustible or toxic gas detectors above the grate
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There is a company that dug recovery channels around the warehouse where toxic liquids are stored; these channels are covered with grating plates and are half a meter deep. Then, a toxic gas detector was placed at a height of about 50 cm above the grating plate. I would like to ask: for devices of this type, installed on grating plates or in areas where there is enough space for liquids and gases to flow through, how should the installation height of combustible and toxic gases that are heavier than air be determined? Is it 30-60 based on the screen plate, or 30-60 cm above the surface based on the bottom of the channel? Thank you all, guys!
When the specific gravity of the gas being monitored is greater than that of air, the installation location should be below the source of leakage, but at a distance of no less than 0.3 m from the ground
I understand that; what I’m asking is how to set it up when there’s a comb. The source of leakage is the large tank, which is placed on the floor of the warehouse. To prevent leaks from going unnoticed, two measures are taken: one is to install detectors, and the other is to create channels around the warehouse for collecting any leaked fluid.
The alarm device is installed on the ground on the side of the recovery channel equipped with grating plates, near the warehouse.
Bro, the question I asked is about height. . It can be installed on a grating; what about the height? Should it be based on the comb, or on the bottom of the channel?
The grating plate is based on 30-60
That means the alarm may only be triggered after the leaking material fills the channel. .
Generally, fixed-point detectors are of the diffusion type, while self-priming types are usually found in portable devices.
It’s easy to get flooded if it’s placed in a ditch; I think it’s better to put it on a grating plate.