pressure gauge with diaphragm seal
Diaphragm seal Pressure gauge working principle
เม.ย.
Diaphragm seal Pressure gauge working principle
Diaphragm seal Pressure gauge working principle : works on the principle of transmitting pressure from the process medium to the gauge mechanism through a flexible diaphragm. The diaphragm is typically made of metal and is clamped between the process connection and the gauge mechanism.
When the process medium applies pressure to the diaphragm, it deforms or flexes, transmitting the pressure to the gauge mechanism while preventing the process fluid from coming into direct contact with the gauge. The gauge mechanism typically includes a sensing element such as a Bourdon tube or a bellows, which is designed to convert the diaphragm’s deformation into a rotary or linear motion.
The motion of the sensing element is then amplified and transmitted to the gauge’s pointer or digital display, indicating the pressure of the process medium. The diaphragm seal can be designed with different materials and shapes, depending on the specific application and process medium. For example, in applications where the process medium is corrosive or abrasive, the diaphragm seal may be made of materials such as stainless steel or Hastelloy, which are more resistant to corrosion and wear.
Overall, the diaphragm seal pressure gauge provides a reliable and accurate method of measuring pressure in applications where the process medium is challenging for traditional pressure gauges. It protects the gauge mechanism, prolonging its lifespan and preventing damage to the process medium.
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