Why are there separate gauges for oxygen pressure, nitrogen pressure, and general pressure? ?
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Which brother can explain it to me! ! ! Thank you all first!
What you mentioned is a bit vague. Could you be more specific about in what situations it is used?
Different materials result in different requirements; for example, oxygen pressure gauges need to be resistant to oil, while ammonia pressure gauges must be corrosion-resistant.
The usage conditions, environment, and requirements are different!
These tables have different scopes of use, and the goal is to achieve a certain level of precision!
A pressure gauge is a general term. Different environments of use are distinguished based on the medium, which is why there are oxygen pressure gauges, nitrogen pressure gauges, ammonia pressure gauges, and so on. Today, pressure gauges used in sulfur-containing oil and gas fields are required to be resistant to H2S corrosion.
Oxygen pressure gauges and nitrogen pressure gauges also belong to the category of pressure gauges; their type is determined by the medium being measured
It’s so confusing – it isn’t explained clearly at all; usually, it is mentioned that the pressure gauge is for gases or liquids. It is mainly related to the environment; each pressure gauge is used in its corresponding environment