Whole closed type capacitance pressure differential pressure transmitter

• Main Author: CHEN MINGWAN
• Format: Patent
• Language: Chinese; English
• Published: 20.05.2009
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The utility model discloses a wholly sealed capacitance pressure differential pressure transmitter. The wholly sealed capacitance differential pressure transmitter is characterized in that a sensor and a circuit board are arranged in the cavity formed by a welded sleeve and an upper cover, and the cavity is pumped to form a vacuum environment through vacuum pumping holes, so the sensor and the circuit board are in the vacuum environment. Therefore, the capacitive sensor and the circuit board can be prevented from moisture, so as to ensure the circuit board to operate steadily and facilitate improving the accuracy of the measuring result of the capacitance pressure differential pressure transmitter.