CN205483165U - Two silicon capacitance fluviographs of pressing extremely of high accuracy - Google Patents

Two silicon capacitance fluviographs of pressing extremely of high accuracy Download PDF

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Publication number
CN205483165U
CN205483165U CN201620209667.7U CN201620209667U CN205483165U CN 205483165 U CN205483165 U CN 205483165U CN 201620209667 U CN201620209667 U CN 201620209667U CN 205483165 U CN205483165 U CN 205483165U
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high accuracy
water level
silicon capacitance
miniature silicon
miniature
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CN201620209667.7U
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郭梓烽
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Shr Automation Technology Co Ltd
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Shr Automation Technology Co Ltd
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Abstract

Two silicon capacitance fluviographs of pressing extremely of high accuracy, including two miniature silicon capacitance pressure sensor, miniature silicon capacitance pressure sensor range is less to be used for measuring the atmospheric pressure, another miniature silicon capacitance pressure sensor range is great, built -in stainless steel isolation diaphragm to adopt oil charge technology to carry out the oil charge, link to each other two miniature silicon capacitance pressure sensor's output and be connected with water level display. The utility model provides a based on the pressure type level sensor of silicon capacitance principle, realize the water level and measure the high accuracy, long term stability is good, reduces the influence that ambient temperature brought in the use to measurement water level precision, and under the temperature environment of difference, the drift can not take place for output, realizes the water level and measures high accuracy, high stability.

Description

The double absolute pressure silicon electric capacity water-level gauge of high accuracy
Technical field
This utility model relates to a kind of water level monitoring instrument, is specifically related to the double absolute pressure silicon electric capacity water-level gauge of a kind of high accuracy.
Background technology
In recent years due to the fast development of China's economy, the raising of living standards of the people, we are to water resource, water environment, the safety of reservoir rivers is put forward higher requirement, thus need to set up a lot of water-level observation point in various places, this is accomplished by disposing a kind of powerful level sensor to carry out water level monitoring.And the ratio of precision of the domestic existing most level measuring of pressure resistance type level sensor is relatively low, long-time stability are poor, due to the temperature sensitive properties that pressure resistance type chip is intrinsic, output water level is made easily to be affected by ambient temperature, drift about, therefore, use under different temperature environments, affect the accuracy of level measuring.Although many producers use the different methods circuit part below to carry out temperature-compensating, to make up this weakness of pressure drag chip, but owing to temperature-compensating technological work amount is big, expend the time long, producer is restricted by cost, and temperature-compensating is only carried out in a narrower temperature range.After using ambient temperature beyond temperature-compensating interval, the accuracy of measurement of pressure resistance type water-level gauge still cannot ensure.
Utility model content
This utility model provides the double absolute pressure silicon electric capacity water-level gauge of a kind of high accuracy, to solve the problem that ratio of precision is relatively low and long-time stability are poor that prior art exists.
This utility model solves its technical problem and be the technical scheme is that
The double absolute pressure silicon electric capacity water-level gauge of a kind of high accuracy, including two miniature silicon capacitive pressure transducers, less being used for of miniature silicon capacitive pressure transducer range measures atmospheric pressure;Another miniature silicon capacitive pressure transducer range is relatively big, built-in rustless steel isolation diaphragm, and it is oil-filled to use oil-extended process to carry out, and being connected by the outfan of two miniature silicon capacitive pressure transducers is connected with water level display.
Two silicon capacitive pressure transducers of operation principle of the present utility model measure atmospheric pressure and hydraulic pressure respectively, then that output valve is poor, through the computing of circuit part, can draw water level value.
This utility model designs a kind of pressure type water level sensor based on silicon capacitance principle, realize level measuring high accuracy, long-time stability are good, reduce the impact that in use measurement water level precision is brought by ambient temperature, under different temperature environments, output will not be drifted about, it is achieved level measuring high accuracy, high stability.
Accompanying drawing illustrates:
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
1 miniature silicon capacitive pressure transducer, 2 miniature silicon capacitive pressure transducers, 3 rustless steel isolation diaphragms, 4 oil, 5 outfans, 6 water level displays in figure.
Detailed description of the invention:
As it can be seen, the double absolute pressure silicon electric capacity water-level gauge of a kind of high accuracy, including miniature silicon capacitive pressure transducer 1 and miniature silicon capacitive pressure transducer 2, miniature silicon capacitive pressure transducer 2 range is 120KPa, is suitable to measure atmospheric pressure;Type silicon capacitive pressure transducer 1 range is 800KPa, be suitable to measure the hydraulic pressure of the 0-70m depth of water, built-in rustless steel isolation diaphragm 4, and using oil-extended process to carry out oil-filled 4, the outfan 5 of miniature silicon capacitive pressure transducer 1 is connected with the outfan 5 of miniature silicon capacitive pressure transducer 2 and is connected with water level display 6.
Two silicon capacitive pressure transducers of operation principle of the present utility model measure atmospheric pressure and hydraulic pressure respectively, then that output valve is poor, through the computing of circuit part, can draw water level value.
This utility model designs a kind of pressure type water level sensor based on silicon capacitance principle, realize level measuring high accuracy, long-time stability are good, reduce the impact that in use measurement water level precision is brought by ambient temperature, under different temperature environments, output will not be drifted about, it is achieved level measuring high accuracy, high stability.

Claims (1)

1. the double absolute pressure silicon electric capacity water-level gauge of high accuracy, is characterized in that including that two miniature silicon capacitive pressure transducers, less being used for of miniature silicon capacitive pressure transducer range measure atmospheric pressure;Another miniature silicon capacitive pressure transducer range is relatively big, built-in rustless steel isolation diaphragm, and it is oil-filled to use oil-extended process to carry out, and being connected by the outfan of two miniature silicon capacitive pressure transducers is connected with water level display.
CN201620209667.7U 2016-03-18 2016-03-18 Two silicon capacitance fluviographs of pressing extremely of high accuracy Active CN205483165U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620209667.7U CN205483165U (en) 2016-03-18 2016-03-18 Two silicon capacitance fluviographs of pressing extremely of high accuracy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620209667.7U CN205483165U (en) 2016-03-18 2016-03-18 Two silicon capacitance fluviographs of pressing extremely of high accuracy

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CN205483165U true CN205483165U (en) 2016-08-17

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CN (1) CN205483165U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107569105A (en) * 2017-10-18 2018-01-12 浙江绍兴苏泊尔生活电器有限公司 Heating kettle and anti-dry detection method
CN108814502A (en) * 2018-06-29 2018-11-16 歌尔股份有限公司 A kind of dish-washing machine level measuring control method and system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107569105A (en) * 2017-10-18 2018-01-12 浙江绍兴苏泊尔生活电器有限公司 Heating kettle and anti-dry detection method
CN108814502A (en) * 2018-06-29 2018-11-16 歌尔股份有限公司 A kind of dish-washing machine level measuring control method and system

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