Glavni tehnički parametri i otpornost na koroziju membranskog manometra
The structure design of the diaphragm pressure gauge adopts an indirect method, so the instrument can be used to measure the pressure of some liquid, gas or granular solid media with high viscosity, easy crystallization, high corrosiveness and high temperature. Isolation diaphragms are available in a variety of materials to suit a variety of corrosive media. Diaphragm pressure gauge is suitable for chemical industry, chemical fiber, synthetic fiber, petroleum, dyeing, alkali production and other industries.
Main technical parameters of diaphragm pressure gauge:
The degree of diaphragm pressure gauge includes ±1.6 percent , ±2.5 percent ;
The diaphragm materials used in the instrument include: OCr18Ni12Mo2 (316), Hastelloy C (H276c), Monel alloy (Cu30Ni70), tantalum alloy (Ta), fluoroplastic (PTFE);
The commonly used materials for isolators are: acid-resistant stainless steel, molybdenum-containing stainless steel, and fluoroplastics;
Gasket material: Nitrile rubber, fluoroplastic;
Sealing fluid: silicone oil, vegetable oil;
Diaphragm pressure gauge implementation standard: JB/T8624-1997.
The structure principle of diaphragm pressure gauge:
In the process of pressure measurement, due to the pressure of the medium, the diaphragm of the diaphragm pressure gauge will be deformed to a certain extent, and the sealing liquid will be pressed to form a pressure equivalent to P, which is transmitted to the pressure instrument to display the pressure of the measured medium. value.
Corrosion resistance of diaphragm pressure gauges:
Compared with ordinary instruments, the corrosion resistance of diaphragm pressure gauges has been significantly improved. This type of instrument can be used in the measurement environment and the occasions where the measurement medium has a certain corrosive effect. Diaphragm pressure gauge can choose the material of isolator, diaphragm and sealing gasket according to the conditions of use.
