What type of sampling cylinder should be used to collect hydrogen from pipelines? Are there any suitable manufacturers you can recommend?
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As the title suggests, I need to research hydrogen sampling cylinders recently. These are used to collect industrial hydrogen from pipelines in order to measure its purity. I have already ordered a chromatograph and am about to purchase a sampling cylinder, with a capacity of around 1-2 liters. Since I lack experience, I hope that those who are more experienced can offer some advice, recommend brands, and advise on how to connect it to the pipeline. Thank you.
Do you use hydrogenation units? Our company uses cylinders made in Fushun for obtaining hydrogen samples.
Install sampling valves on the pipeline; it is also possible to use ordinary air bags for sampling
Some factories use bladder samples, which is simple and convenient; the downside is that absorption occurs over time. Multiple replacements, rapid testing!
When sampling the ball bladder, the situation mentioned in Building 4# can occur. I conducted an analysis of the hydrogen mixture and found that the hydrogen content decreased significantly after the sampling bulb was left there for some time. Later, a suction flask of 500–1000 ml was used, equipped with two glass stoppers for inlet and outlet (an accurate vacuum gauge could be connected to them). The gas inside the flask was first pumped out, then the gas to be tested was introduced. Vacuum extraction was carried out again for replacement (the number of such replacements could be adjusted accordingly based on the vacuum level and the required detection accuracy), after which the gas to be tested was introduced once more……