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A high-precision gas micro-differential pressure gauge

A micro-pressure difference, high-precision technology, applied in the direction of measuring fluid pressure, pressure difference measurement between multiple valves, instruments, etc., can solve the problems of low precision and gas micro-pressure difference measurement accuracy, and achieve high precision, Avoid the effect of zero drift signal and high measurement accuracy

Active Publication Date: 2022-07-05
武汉德塞仪器仪表科技有限公司
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Problems solved by technology

[0004] In view of this, the present invention proposes a high-precision gas micro-pressure differential meter to solve the problem of low precision of gas micro-pressure differential measurement due to the low accuracy of traditional high-precision gas micro-pressure differential meters in measuring ultrasonic propagation time

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  • A high-precision gas micro-differential pressure gauge
  • A high-precision gas micro-differential pressure gauge
  • A high-precision gas micro-differential pressure gauge

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Embodiment Construction

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] like figure 1 As shown, the high-precision gas differential pressure meter of this embodiment includes a gas micro differential pressure measuring device 10, a single-chip microcomputer, an ultrasonic transmission drive module, a first gate switch, an ultrasonic transducer A, an ultrasonic transducer B, an ultrasonic transducer Transducer C, second gate switch, amplifier, zero-crossing level detection module, timing gate, crystal oscillator time scale an...

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Abstract

The invention proposes a high-precision gas micro-pressure differential meter, which includes a gas micro-pressure differential measuring device, a single-chip microcomputer, an ultrasonic transmission driving module, a first gating switch, an ultrasonic transducer A, an ultrasonic transducer B, an ultrasonic transducer Device C, second gate switch, amplifier, zero-crossing level detection module, timing gate, crystal oscillator time scale and AND gate, ultrasonic transducer A, ultrasonic transducer B and ultrasonic transducer C are all spontaneous and self-receiving formula and identical. The present invention has high accuracy of the propagation time of the ultrasonic signal measured by the above structure, and high measurement accuracy of the gas micro-pressure difference meter.

Description

technical field [0001] The invention relates to the technical field of micro-pressure difference measurement, in particular to a high-precision gas micro-pressure difference meter. Background technique [0002] For the measurement of gas micro-pressure difference, the traditional method is to use a U-tube pressure gauge, which is simple in structure, cheap in price, and reliable in performance. In order to improve the sensitivity and reduce the reading error, the ultrasonic gas micro-differential pressure gauge appeared. On the basis of retaining the advantages of the U-shaped tube pressure gauge, simple structure, high reliability, and intuitiveness, the use of ultrasonic waves for accurate and It is designed based on the principle of quickly measuring the height of the liquid column in the U-shaped tube, and has the characteristics of high measurement accuracy, accurate reading and fast measurement speed. [0003] For ultrasonic gas micro differential pressure meters, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L13/00G01L19/04
CPCG01L13/00G01L19/04
Inventor 张进
Owner 武汉德塞仪器仪表科技有限公司
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