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The diaphragm seal can protect the pressure measuring instrument from being damaged by various media. In the diaphragm sealing system, the diaphragm of the diaphragm seal can separate the measuring instrument from the measured medium. The filling fluid inside the diaphragm seal system can transmit pressure to the measuring instrument by hydraulic means. We can provide diaphragm seals and system filling fluids of different designs and materials to meet customer application requirements. Type H12 diaphragm seals are suitable for small process connection applications. Lower range thanks to built-in diaphragm. When the temperature changes, the large diameter of the diaphragm produces a low deviation at the measuring instrument. The process connection side of the flange can be cleaned and flushed by selecting the flushing hole. Diaphragm seals and measuring instruments can be assembled directly or through cooling elements or flexible capillary tubes. The upper chamber and diaphragm of the sealing diaphragm can be made of the same or different materials. The diaphragm and sealing surface can also be sprayed.