Should a maximum red warning line be marked on the vacuum gauge?
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Should a maximum red warning line be marked on a vacuum gauge? Should a maximum red warning line be marked on a vacuum gauge? Pressure gauges require a maximum warning line and a calibration label – what about vacuum gauges?
It's needed. Some manufacturing processes require a high level of vacuum; there is a specified minimum vacuum level that must be maintained
According to process requirements, it is generally advisable to use the best markings to facilitate operation by process personnel
We don’t set a maximum value here; generally, a minimum value is required. A higher vacuum level is better for the manufacturing process, but I’m not sure if there is a maximum value. .
General guidelines: The pressure gauge indicates the maximum safe operating pressure, while the vacuum gauge shows the minimum vacuum level required for the process. Although both are red lines, they have different uses.
The same requirements apply, just like those for ordinary pressure gauges; the difference is that one is used to measure negative pressure while the other is used to measure positive pressure.
During the safety standardization process in our company, each pressure gauge was labeled, and even the outlet of the centrifugal pump was marked.
Do the relevant regulations specify that a red line must be added?
The purpose of marking a warning line on the vacuum gauge is to enable operators on-site to clearly compare the pressure against safety and process requirements