CN204855550U - Little air velocity transducer - Google Patents

Little air velocity transducer Download PDF

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Publication number
CN204855550U
CN204855550U CN201520608389.8U CN201520608389U CN204855550U CN 204855550 U CN204855550 U CN 204855550U CN 201520608389 U CN201520608389 U CN 201520608389U CN 204855550 U CN204855550 U CN 204855550U
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China
Prior art keywords
velocity transducer
air velocity
feeler
sensor module
shell
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Active
Application number
CN201520608389.8U
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Chinese (zh)
Inventor
丁铁壮
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NANJING INGMAR INSTRUMENT TECHNOLOGY CO LTD
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NANJING INGMAR INSTRUMENT TECHNOLOGY CO LTD
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Priority to CN201520608389.8U priority Critical patent/CN204855550U/en
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Publication of CN204855550U publication Critical patent/CN204855550U/en
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Abstract

The utility model discloses a little air velocity transducer, connects pole, display screen, button and sensor module circuit board at shell, hollow gauge stick, and sensor module circuit board is installed inside the shell, and display screen and button are installed on the shell, and the gauge stick links to each other with the one end that connects the pole, connects the other end of pole and sensor module circuit board to link to each other, has manyly to the air vent on the gauge stick. Manyly can make the more even of air mixing to the ventilation hole through setting up, wind speed between the measurable quantity 0 -20ms is particularly useful for the fast measurement of 0.2-2ms gentle breeze, and the precision reaches 0.1ms, has filled in the fast blank of air velocity transducer immeasurability gentle breeze of pitot tube principle, makes the measured value more accurate.

Description

A kind of micro-air velocity transducer
Technical field
The utility model relates to sensor field, particularly relates to a kind of micro-air velocity transducer.
Background technology
Air velocity transducer can monitor wind speed size continuously, and can carry out the important instrument of display in real time to the wind speed of present position.This sensor is widely used in mine, electric power, tobacco, and medicine etc. needs the field of Real-Time Monitoring wind speed.The detection and control quality of the type of air velocity transducer and the direct influential system air quantity of performance.Air velocity transducer is various in style, and the most frequently used is pitot tube type air velocity transducer, ultrasound wave vortex air velocity transducer, screw propeller air velocity transducer and hot line, hot diaphragm type air velocity transducer etc.At present, the air quantity variable end device of China and American-European each producer all adopts pitot tube type air velocity transducer.Existing pitot tube type air velocity transducer has good precision in 4-16m/s scope, but has limitation in little measuring wind speed, cannot measure lower than 2m/s, cannot use in the measurement occasion of some small wind speed.
Summary of the invention
Small wind speed and the inadequate problem of measuring accuracy cannot be measured for existing air velocity transducer, the utility model proposes a kind of micro-air velocity transducer.
The technical scheme that the utility model adopts specifically is achieved in that
The utility model provides a kind of micro-air velocity transducer, comprise shell, hollow feeler, extension bar, display screen, button and sensor module circuitry plate, sensor module circuitry plate is arranged on enclosure, display screen and button are arranged on shell, feeler is fixed by extension bar and sensor module circuitry plate, the bar wall of feeler has total head pressure tap, position corresponding with total head pressure tap on bar wall has static pressure pressure tap, a total head pressure tap and a static pressure pressure tap are a pair air hole, feeler have multipair air hole.
For the ease of the measuring wind speed in air channel, feeler is T-shaped.
In order to make feeler high temperature resistant, feeler is aluminum alloy material.
Be fixed on measuring channel for the ease of feeler, this micro-air velocity transducer also comprises mounting flange, and mounting flange is arranged on feeler.
The utility model is by arranging multipair air vent, can make that air mixes evenly, the wind speed between 0-20m/s can be measured, be particularly useful for the measurement of 0.2 ~ 2m/s gentle breeze speed, precision reaches 0.1m/s, the air velocity transducer having filled up pitot tube principle can not measure the blank of gentle breeze speed, makes measured value more accurate.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model;
Fig. 2 is display panel figure of the present utility model.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail embodiment of the present utility model below in conjunction with accompanying drawing, make above-mentioned and other object of the present utility model, Characteristics and advantages will be more clear.Deliberately do not draw accompanying drawing in proportion, focus on purport of the present utility model is shown.
As shown in Figure 1, the utility model provides a kind of micro-air velocity transducer, comprises shell 1, hollow T-shaped feeler 2, extension bar 3 and sensor module circuitry plate 5.It is inner that sensor module circuitry plate 5 is arranged on shell 1, shell 1 is also fixed with electric grid connector, for being connected with external system.Feeler 2 is connected with one end of extension bar 3, and the other end of extension bar 3 is connected with sensor module circuitry plate 5.Feeler 2 is aluminum alloy material, feeler 2 is provided with mounting flange 6, the bar wall of feeler 2 has total head gaging hole, during use, the face, hole of total head pressure tap is vertical with airflow direction, position corresponding with total head pressure tap on bar wall has static pressure pressure tap, and a total head pressure tap and a static pressure pressure tap are a pair air hole 4, feeler have multipair air hole 4.
As shown in Figure 2, the utility model also comprises display screen 7 and button 8, and display screen 7 and button 8 are arranged on shell 1, and display screen 7 is the current measuring wind value of display intuitively, button 8 adopts film key, can be calibrated wind speed and output signal easily by button 8.
When using this micro-air velocity transducer to survey wind speed, sensor module circuitry plate gathers the force value that feeler produces, a differential pressure signal is treated to through sensor, this signal, after the process such as filtering, amplification, A/D conversion, calculates real-time air speed value, is presented on liquid crystal display, this sensor has signal output function simultaneously, have 0 ~ 10V voltage to export, 4 ~ 20mA electric current exports and RS485 digital signal exports three types, is connected with external system by electric grid connector.

Claims (4)

1. a micro-air velocity transducer, it is characterized in that, comprise shell (1), hollow feeler (2), extension bar (3), display screen (7), button (8) and sensor module circuitry plate (5), it is inner that sensor module circuitry plate (5) is arranged on shell (1), display screen (7) and button (8) are arranged on shell (1), feeler (2) is fixed by extension bar (3) and sensor module circuitry plate (5), the bar wall of feeler (2) has total head pressure tap, position corresponding with total head pressure tap on bar wall has static pressure pressure tap, a total head pressure tap and a static pressure pressure tap are a pair air hole (4), feeler (2) there is multipair air hole (4).
2. micro-air velocity transducer according to claim 1, is characterized in that, feeler (2) is for T-shaped.
3. micro-air velocity transducer according to claim 2, is characterized in that, feeler (2) is aluminum alloy material.
4. micro-air velocity transducer according to claim 3, is characterized in that, this micro-air velocity transducer also comprises mounting flange (6), and mounting flange (6) is arranged on feeler (2).
CN201520608389.8U 2015-08-13 2015-08-13 Little air velocity transducer Active CN204855550U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520608389.8U CN204855550U (en) 2015-08-13 2015-08-13 Little air velocity transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520608389.8U CN204855550U (en) 2015-08-13 2015-08-13 Little air velocity transducer

Publications (1)

Publication Number Publication Date
CN204855550U true CN204855550U (en) 2015-12-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520608389.8U Active CN204855550U (en) 2015-08-13 2015-08-13 Little air velocity transducer

Country Status (1)

Country Link
CN (1) CN204855550U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110031648A (en) * 2019-04-10 2019-07-19 绍兴文理学院元培学院 A kind of hole wind speed measuring device of bulk solid porous media

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110031648A (en) * 2019-04-10 2019-07-19 绍兴文理学院元培学院 A kind of hole wind speed measuring device of bulk solid porous media
CN110031648B (en) * 2019-04-10 2023-12-29 绍兴文理学院元培学院 Pore wind speed measuring device of porous medium of granule

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