A Coplanar Suspended Fully Isolated Sensor

A suspended, fully isolated technology, applied in the field of sensors, can solve the problems of inability to achieve coplanar suspension, low service life, rigid structure of pressure sensors, etc., to achieve the effect of improving flexibility, improving static pressure performance, and expanding use

Active Publication Date: 2021-03-19
GUANGZHOU HUAMAO SENSING INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional capacitive pressure sensor has a rigid structure, cannot achieve coplanar suspension, and has a low service life. For this reason, the inventor proposed a coplanar suspension fully isolated sensor based on various factors.

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  • A Coplanar Suspended Fully Isolated Sensor

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore cannot be constru...

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Abstract

The invention discloses a coplanar suspension type full-isolation sensor. The sensor comprises a shell, a base is arranged at the bottom of the shell, a suspension core is arranged in the shell, the suspension core is of a transversely-arranged cylindrical shell structure, electrode plates are arranged in the middle in the suspension core in a bilateral symmetry mode, and a center measuring diaphragm is arranged between the two electrode plates. The coplanar suspension type full-isolation sensor is characterized in that the suspension core is far away from a process pressure containing chamber; mechanical and thermal isolation is realized, so that the suspension core body is not in direct contact with a process heat source and a pressure source; the mechanical stress on the suspension corebody is released, and the static pressure performance is improved; the wide range ratio reaches 100: 1; according to the installation mode of the rigid insulator sintered wire, the oil filling pipe and the suspension core body, the capacitor plate and the suspension core body are in laser welding connection, full isolation is achieved, electrical insulation is guaranteed, and the flexibility, performance and transient voltage resistance protection capacity of the electronic circuit board are improved; and the high precision of 0.075% is realized.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a coplanar suspension type fully isolated sensor. Background technique [0002] Transmitter is a converter that converts the output signal of the sensor into a signal that can be recognized by the controller (or converts the non-electricity input by the sensor into an electrical signal and amplifies it for remote measurement and control). Sensors and sensors together constitute a monitoring signal source for automatic control. Different physical quantities require different sensors and corresponding sensors. There are many types of sensors, and the sensors used in industrial control instruments mainly include temperature sensors, pressure sensors, flow sensors, current sensors, voltage sensors, etc.; [0003] Capacitive pressure sensor is a commonly used sensor product, which is mainly composed of three parts: load cell sensor (also called pressure sensor), measuring circuit an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/14G01L9/00G01L19/06
CPCG01L1/142G01L9/0005G01L19/06G01L19/0672
Inventor 李始丰
Owner GUANGZHOU HUAMAO SENSING INSTR CO LTD
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