Is the steam pressure gauge pressure or absolute pressure? ?
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I’m a bit confused – is the pressure of the steam used in factories gauge pressure or absolute pressure? ?
It usually refers to gauge pressure, while absolute pressure is more commonly used in design documents! This post was last edited by yfq4308 on 2009-4-7 08:20]
It’s obviously gauge pressure; otherwise, how could 1 kilogram of steam exist?
All pressure gauges indicate gauge pressure
It is gauge pressure, so when calculating you need to remember to convert it into the corresponding absolute pressure as well as other relevant data such as temperature.
The steam pressure gauges used in actual factory production are generally gauge pressure; in situations where a vacuum may exist, the gauges have a negative pressure range, but this is still gauge pressure.
Gauge pressure – have you ever seen steam with an absolute pressure of 0.X?
All pressure gauges indicate gauge pressure
Gauge pressure: since the pressure relative to the atmosphere is 0 in this case, there is already one atmosphere of pressure acting on the gauge. It should be easy to understand, haha.
All pressure gauges indicate gauge pressure
The pressure gauge shows gauge pressure; the term absolute pressure is generally used in books or in more formal contexts. In the workshop, we usually talk about gauge pressure
The pressure gauges on all devices generally indicate gauge pressure, and the pressure value mentioned in everyday conversation also refers to gauge pressure. Gauge pressure is only used in calculations; therefore, during calculation, gauge pressure must be converted into other relevant values such as temperature at the corresponding gauge pressure.
In a factory, the term referred to is definitely gauge pressure; absolute pressure is generally used only in textbooks or during calculations carried out by design firms.
The steam pressure in a factory generally refers to gauge pressure
It is gauge pressure; therefore, when referring to the steam pressure-temperature chart, it needs to be converted to absolute pressure in order to match it with the temperatures listed in the chart.
What is usually referred to is gauge pressure, and pressure gauges generally display gauge pressure. I have only seen absolute pressure in design documents.
In factories, the steam pressure mentioned generally refers to gauge pressure; otherwise, people would have to do some conversion when reading the gauges, which is quite troublesome
It is usually gauge pressure. This question is a bit amateurish, as those working in instrumentation and process engineering know that pressure generally refers to gauge pressure, and it is this gauge pressure that is indicated by pressure gauges. If it were absolute pressure, it would be explicitly marked as “absolute pressure” or with the symbol “(abs)”. However, in terms of steam pressure, there are also those that indicate absolute pressure; the inlet steam pressure of one of our company’s large ammonia refrigerators is measured by an absolute pressure transmitter, which typically shows an absolute pressure of 20 Kpa.