On-site hydrogen sulfide gas detector
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The hydrogen sulfide gas detectors in our facility have been in use for a long time, and their sensors are replaced on a regular basis. However, every time they are calibrated, it is found that their response is slow. A test was conducted: the first time a standard gas was introduced, it took a long time for the concentration to reach the alarm level, and the final measured value was considerably lower than the concentration of the standard gas ； However, during the second test with the standard gas, the alarm was triggered after a short while, and the final measured value was close to the concentration value of the standard gas. Just as a slow response requires activation, if there’s a leak at the site, it could lead to serious problems~ Is it a problem with the instrument? It’s still a problem with the detection principle; do the detectors in other factories also have this same issue? I hope fellow users will step in and discuss this
What is the principle and type of your household hydrogen sulfide detector?
When using a detector for other types of testing on a person, it’s usually a problem with the probe
The metal oxide semiconductor type is the one that can be installed on-site; it works well with hydrocarbons and hydrogen, but its reaction to hydrogen sulfide is slow
I’m referring to those installed on the ground; we conduct regular inspections here, and the probes are replaced in a timely manner. An experienced technician said this problem has existed for a long time
This thing broke down very quickly; the same thing happened here as well. We don’t know what the reason is. It was just replaced, but it broke down again after a short while
You can recalibrate it using standard gas…
For toxic gases, electrochemical sensors are generally recommended! Such sensors are very delicate; they are typically packaged and stored under strict conditions upon leaving the factory. Basically, after leaving the factory (but before installation), they must be replaced within a maximum of 1 year!
Senior, are sensors in the School of Electrical and Electronic Engineering prone to failure? Are there strict requirements regarding the installation environment? Could you recommend some well-known or reliable brands for such detectors?
The GM used for HS inspection is quite good!
Wuxi GreenTong (GM) is really great!