Are seismic pressure gauges also a type of Bourdon tube pressure gauge?

Seismic-resistant pressure gauges are also bellows-type pressure gauges (Bourdon tube pressure gauges/stainless steel pressure gauges); they are seismic-resistant because more robust welding rods and other measures are used during the welding of their internal components. Methanol is not corrosive, so a regular pressure gauge will suffice. As long as it is an ordinary pressure gauge, it is a Bourdon tube pressure gauge (bellow type pressure gauge/stainless steel pressure gauge); this refers to the measuring element ； Bellows have absolutely nothing to do with pressure gauges ； Diaphragms and similar components refer to a type of medium isolation/method for pressure measurement in process connections ； The diaphragm is also known as a separator; there are also diaphragm gauge pressure meters (used for measuring very low pressures or negative pressures).

A so-called shock-resistant pressure gauge is simply a Bourdon tube pressure gauge with damping silicone oil filled inside it; therefore, it also belongs to the category of Bourdon tube pressure gauges

It seems that the poster still needs to gain a better understanding of gauges; once you see various types of pressure gauges in person, you’ll understand better, especially those with diaphragm boxes, diaphragms, or membranes – you’ll get it once you see them. It’s best to be able to see their internal structure as well, otherwise relying only on textual descriptions and theories remains rather vague