Combined airtight cavity air pressure sensor calibration device

A technology of air pressure sensor and calibration device, applied in measuring devices, instruments, measuring fluid pressure, etc., can solve the problems of large deviation of measured data, affecting measurement results, complicated operation, etc., to improve efficiency, prevent air leakage, disassemble and assemble handy effect

Pending Publication Date: 2017-08-01
HANGZHOU JIPU TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] During the use of the sensor, the sensitivity coefficient will change with the extension of time and the aging of electronic components. If the calibration is not changed i

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  • Combined airtight cavity air pressure sensor calibration device
  • Combined airtight cavity air pressure sensor calibration device
  • Combined airtight cavity air pressure sensor calibration device

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Depend on Figure 1-7 As shown, the combined airtight cavity air pressure sensor calibration device of this embodiment includes a base plate 12, a cylinder 4 is installed on the base plate 12, a cylinder piston rod 41 is installed on the cylinder 4, and four through holes are installed at the air outlet of the cylinder 4. Joint 10, the four-way joint 10 has an upper port 101, a lower port 104, a left port 102 and a right port 103, the lower port 104 is ...

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Abstract

The invention discloses a combined airtight cavity air pressure sensor calibration device comprising a baseplate which is provided with an air cylinder. An air cylinder piston rod is installed on the air cylinder. The air outlet hole of the air cylinder is provided with a four-through-hole connector. The four-through-hole connector is provided with an upper port, a lower port, a left port and a right port. The lower port is connected with the air outlet hole of the air cylinder, the upper port is provided with a hand slide valve, the left port is connected with an airtight cavity through an air pipe, the airtight cavity is internally provided with a sensor to be tested and a standard sensor, and the right port is provided with a sealing cap. The baseplate is also provided with a positioning plate. The air cylinder and the four-through-hole connector are fixedly connected with the positioning plate. The air cylinder is applied to be matched with the four-through-hole connector to be connected with the airtight cavity internally provided with the sensors to act as a pressure balance part. The airtight cavity is used for installing the sensors and also reducing the output range of the air cylinder so that the device is suitable for calibrating the air pressure sensor of low air pressure range to verify the sensitivity, the linearity, the hysteresis and other parameters, and thus the device has the characteristics of low cost and relatively high accuracy.

Description

technical field [0001] The invention relates to the field of air pressure calibration of sensors, and mainly relates to a combined air pressure sensor calibration device in a closed cavity. Background technique [0002] Sensor calibration is the process of using standard instruments with higher precision to calibrate the sensor, so as to establish the corresponding relationship between the sensor output and input. At the same time, the error relationship under different conditions of use is also determined. The basic method of calibration is to use a standard instrument to generate a known non-electric quantity as an input quantity, input it into the sensor to be tested, and then compare the output quantity of the sensor with the input standard quantity to obtain a series of standard data or curves. Determining the performance indicators of the sensor based on the test data is actually determining the measurement accuracy of the sensor. [0003] During the use of the senso...

Claims

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Application Information

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IPC IPC(8): G01L27/00
CPCG01L27/005
Inventor 杨建陈志龙姜进
Owner HANGZHOU JIPU TECH
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