在化工生产过程中,压力是经常需要测量的重要工艺参数之一。由于工艺介质种类繁多,性质复杂,如腐蚀、粘稠、易凝固、结晶等特性,给压力的测量带来了困难。又由于在工艺介质流经的某些部位,如泵后,往往出现不同程度的振动,也影响了压力的测量。在这些情况下,通常采取增加“隔离罐”、“缓冲罐”装置,或再加“蒸汽伴热”(或“电伴热”)保温,或选用“膜片压力表”另加上述措施。即使如此,在很多 In the chemical production process, pressure is often one of the important process parameters that need to be measured. Due to the variety of process media, complex nature, such as corrosion, viscosity, easy to solidification, crystallization and other characteristics, to the pressure measurement has brought difficulties. And because of some parts of the process medium flow, such as pumps, often varying degrees of vibration, but also affect the pressure measurement. In these cases, it is common practice to add insulation, buffer tank, or “steam heat” (or “heat tracing”) insulation, or use a “diaphragm pressure gauge” plus the above. Even so, a lot