Let’s discuss the actual field application of benzene toxic and harmful gas detectors
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In areas classified as high-hazard zones, benzene toxic and harmful gas detectors are set to trigger an alarm at a level of 5 ppm. However, in actual field use, excessive sensitivity of these detectors leads to problems that prevent them from functioning properly, rendering them essentially useless in practice.
Benzene is highly toxic. For the purposes of liability protection and safety, it is fine for the design institute to use values in accordance with the specifications. There is a maximum limit for the alarm values; for example, the standards require that the second-level alarm not exceed 30, while the design team may set this value at 20. The owner may request in writing that the design value be set at 30.
Why is it essentially useless? Without a gas detector, how can you determine what the concentration is?
You are indeed right. This is heavier than air. When you go to check it after reporting the incident, you can’t smell anything at all. One needs to crouch down and smell it. In fact, there is still leakage. It’s not that it can’t be used normally. It’s that you have too low expectations. By raising environmental standards, it becomes a useful thing.
Gas sensors, well, they respond to numerous types of gases. They’re a mess; they don’t even have the ability to identify just one specific gas. The gas composition is so complex that it’s impossible to determine any accurate concentration; its readings are nothing but a mess of nonsense. To go a step further, there is only one sensitive element in such devices. If it is calibrated using methane gas, then it’s called a methane sensor; if it’s calibrated using carbon monoxide gas, it becomes a carbon monoxide sensor. And if it’s calibrated using the smell of dog waste, then it can rightly be called a dog waste sensor. :Lol, that’s the state of technology worldwide right now. .
So, there is a VOCs control project related to safety and environmental protection
I’ve used it, and its performance was poor. The gas detectors required by national standards for detecting toxic and harmful benzene gases are set to trigger an alarm at 5 ppm; however, allowable errors or inaccuracies related to the ability to distinguish between different substances can lead to frequent false alarms.
To be honest, that’s indeed the current situation, but it can’t be shown openly.
All domestic detectors for detecting toxic and harmful benzene use the PID principle, and almost all of them claim that this is required by domestic standards; this is complete nonsense
It’s definitely useful; given its low position, especially when it rains, moisture can cause interference! Adding a filter can improve it!