CN1796957A - Miniaturized intelligent differential pressure / pressure transmitter - Google Patents
Miniaturized intelligent differential pressure / pressure transmitter Download PDFInfo
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- CN1796957A CN1796957A CN 200410099261 CN200410099261A CN1796957A CN 1796957 A CN1796957 A CN 1796957A CN 200410099261 CN200410099261 CN 200410099261 CN 200410099261 A CN200410099261 A CN 200410099261A CN 1796957 A CN1796957 A CN 1796957A
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- differential pressure
- sensor
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- intelligent differential
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Abstract
The invention discloses a small intelligent differential pressure/ pressure transducer, where there is an electronic box sealed and fixed at the upper part of a sensor component, the lower part of the sensor component provided with pressurized seal ring is fixed with a pressure flange component, the sensor component is provided with a capacitance differential pressure sensor and a temperature sensor under a chamber, there is a group of protective rings and welded rings outside the two sensors, there are terminals in the left cavity of the electronic box, the top end of the left cavity is provided with a magnetic button, there is a printed circuit board (PCB) in the right cavity of the electronic box, and the PCB is mounted with dry reed tube and connected with a display. It can be widely applied to the departs such as chemical, petroleum, metallurgy and circuit boards, for measuring the thermal basic parameters such as pressures, liquid levels and differential pressures of liquids, gases and steams.
Description
Technical field
The invention belongs to the differential pressure that principle that a kind of electricity capacity changes is come the detected pressures signal, it is widely used in departments such as chemical industry, oil, metallurgy, power station, is used to measure thermal technology's basic parameter such as pressure, liquid level, differential pressure of liquid, gas and steam.
Background technology
Transmitter is closed the measurement component that constitutes and reached the telecommunication circuit that is made of the private communication chip by the detection of electrons amplification that microprocessor constitutes with signal processing circuit by the differential capacitor film to be formed, and finishes required measurement and communication task under the support of computer program (software).
Acted on the isolation diaphragm that the differential capacitor film closes measurement component by measuring pressure, be delivered on the central task diaphragm that the differential capacitor film closes, make the central task diaphragm produce displacement, the electric capacity on both sides is changed by sealing liquid (silicone oil).The variation of its electric capacity converts electric signal to by demodulator circuit, this electric signal is by the detection of amplifying circuit, handling back output exports with the digital signal that the differential capacitor film closes linear standard 4-20mA simulating signal of the added differential pressure in both sides and stack, in the inside that the differential capacitor film closes, high-precision temperature sensor is housed, be used for the temperature of survey sensor (medium) simultaneously, this temperature signal can be done the detection signal output of digital quantity, be used for the temperature compensation of sensor itself simultaneously, can improve the effect of sensor temperature compensation.
Along with science and technology development, in industrial process control system, the user improves year by year to the requirement that is used for the on-the-spot transmitter that detects, the on-the-spot transmitter moulding of using of universal demand is small and exquisite, good looking appearance, increased functionality, reliability improves, and existing differential pressure volume is big, capacitive transducer assembly manufacturing cost height, function singleness, can't satisfy the user to being used for the requirement of the on-the-spot transmitter that detects.
Summary of the invention
The present invention will overcome defectives such as existing differential pressure complex structure, volume are big, capacitive transducer assembly manufacturing cost height, function singleness, a kind of multi-functional differential capacitance sensor assembly with independent detection function is provided, is convenient to assemble, the miniaturization transmitter of debugging and the conversion of communication function piece.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of miniaturized intelligent differential pressure, the affixed electronic cartridge of sensor measurement assembly top seal, sensor measurement assembly bottom and pressure flange assembly that the compression seal circle is housed are fixed together by bolt.The sensor measurement assembly is to be provided with the condenser type differential pressure transducer below room, temperature sensor, and two sensor outsides are provided with one group of sensor protection ring and weld-ring.The signal wire of two sensors is connected with the testing circuit plate through pad; Electronic cartridge inside is divided into two independent cavity, be provided with connection terminal in the left chamber, the magnetic push buttons that is made of debugging button and magnet steel spring is equipped with the upper end in left chamber, in the right chamber printed circuit board is housed, and tongue tube is installed on the printed circuit board, is connected with display device.
Be perfused with epoxy sealing in the cavity of signal line passes in the sensor measurement assembly, circuit board is fastenedly connected with screw and room, and uses silica gel sealing, and connector joins with input, output signal and power supply respectively.Temperature sensor is a DS1820 thermometric chip in the sensor measurement assembly, precision reaches ± and 0.5 ℃.
The pin of the connection terminal in its left chamber of electronic cartridge leads to right chamber, uses epoxy sealing between pin and the chamber, is welded with connector on the pin of terminal; Printed circuit board is fastened on the electronic cartridge by screw; Display device is connected with contact pin on the printed circuit board by socket, and is connected by screw retention.Electronic cartridge left chamber end is affixed with the low lid sealing that O-ring seal is housed by screw thread.
The right chamber end of electronic cartridge is by screw thread and by clear glass, and O-ring seal, compacting ring, high lid are formed and shown that end cap seal is affixed.
Display device is provided with 4 socket and the screw holes arranged by 90 degree, and display device is installed by 0 degree, 90 degree, 180 degree, four different directions of 270 degree.
Characteristics of the present invention are:
Can according to user's different needs install difference in functionality printed circuit board (for example different communication functions requires: HART, FF, PROFIBUS), need not change miscellaneous part, for the selection of user's adjustment function offers convenience, also be convenient to simultaneously instrument manufacturing plant and produce, can reduce production costs.
2. design has a socket and a screw hole by 9 degree arrangements on display device, can make display device by 0 degree, 90 degree, 180 degree, four different directions installations of 270 degree, and is convenient for users.
3. owing to adopt tongue tube, can make this transmitter adopt electronic cartridge sealed chamber external application magnet steel to carry out isolated adjustment, improve the sealing property of instrument as on-off switch.
4. the intelligent digital circuit plate that adopts difference in functionality is made a circuit separately by unified installation dimension design, is convenient to the upgrading (CPU upgrading, software upgrading, protocol conversion etc.) of transmitter, and the functional mapping of instrument is brought convenience.
4. temperature sensor is installed in Differential Capacitive Pressure Sensor inside (has adopted DS1820 thermometric chip in an embodiment, temperature signal directly can be converted to digital signal output, precision reaches ± and 0.5 ℃), be convenient to obtain the temperature of medium, and pressure transducer carried out the precise dose compensation.
5. in circuit design; this assembly can convert the detected pressure signal of differential capacitor to analog voltage signal output; can directly use as detection signal; be convenient to the independent detection of sensor and be suitable for large-scale production in the future, simultaneously the application that increases, opens up miniaturized sensors is brought convenience.The input signal that also can be used as the back level processor of various uses uses the range of application and the field of having widened this assembly.
The present invention adopts the principle of electric capacitance change to come a kind of instrument of detected pressures signal, can be widely used in departments such as chemical industry, oil, metallurgy, power station, is used to measure thermal technology's basic parameter such as pressure, liquid level, differential pressure of liquid, gas and steam.Have the small and exquisite exquisiteness of profile, in light weight, further improve the potentiality of software and hardware function, and can cooperate with the various procedures instrument and constitute high-quality industrial automation control system.
Description of drawings
Fig. 1 is a structure scheme of installation of the present invention;
Fig. 2 is a sensor measurement modular construction synoptic diagram;
Fig. 3 is socket and a screw hole location synoptic diagram on the display device.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1, the sensor module 10 that compression seal circle 11 is housed links together through bolt 13 with pressure flange assembly 12, on the top of sensor module 10 electronic cartridge 3 is housed, employing is threaded, O-ring seal 5 is equipped with in the centre, the inside of electronic cartridge 3 is divided into its left side of two independent cavity and is terminals, in have connection terminal 14 to be used to connect outer lead, its right side is the electronic circuit board installation room, the pin of the connection terminal 14 of its left chamber leads to right chamber, adopt epoxy resin 16 sealings between pin and the chamber, be welded with connector 9 on the pin of terminal 14, be used for and being connected of printed circuit board 8, tongue tube 7 is installed on the printed circuit board 8, its conducting and disconnection are controlled with the magnetic push buttons that magnet steel spring 2 constitutes by the debugging button 1 that is installed on the electronic cartridge 3, be used for the zero point of transmitter and the adjustment of range, printed circuit board 8 is fastened on the electronic cartridge 3 by screw 17, be connected with display device 18 on the printed circuit board 8, display device 18 adopts sockets 20 to be connected with contact pin 19 on the printed circuit board 8, fixing with screw 22, the right chamber of electronic cartridge adopts by clear glass 6, O-ring seal 5 and the compacting ring 21 high 4 demonstration end caps of forming that cover, the low lid 15 of employing helicitic texture and the left chamber sealing of O-ring seal 5 with electronic cartridge 3.
As shown in Figure 2; by condenser type differential pressure transducer 42; the temperature sensor 41 sensor measurement assembly 10 that the weld-ring 44 through adopting the formation of molten solder technology constitutes with room 31 and sensor protection ring 43; signal wire at this each sensor of component internal is connected with testing circuit plate 33 through pad 39; in the cavity of signal line passes, be perfused with epoxy resin 38 sealings; printed circuit board 33 adopts screw 34 fastening, and uses silica gel sealing, finishes the output of signal and the input of power supply by connector 45.Temperature sensor 41 is DS1820 thermometric chips, precision reaches ± and 0.5 ℃.
As shown in Figure 3, design has 4 socket and screw holes of arranging by 90 degree on display device 18, and display device is installed by 0 degree, 90 degree, 180 degree, four different directions of 270 degree, is user-friendly to.
Claims (7)
1. miniaturized intelligent differential pressure, the affixed electronic cartridge of sensor measurement assembly (10) top seal (3), sensor measurement assembly (10) bottom and pressure flange assembly (12) that compression seal circle (11) is housed are fixed together by bolt (13), it is characterized in that, described sensor measurement assembly (10) is to be provided with condenser type differential pressure transducer (42) below room (31), temperature sensor (41), two sensor outsides are provided with one group of sensor protection ring (43) and weld-ring (44), and the signal wire of two sensors is connected with testing circuit plate (33) through pad (39); Described electronic cartridge (3) inside is divided into two independent cavity, be provided with connection terminal (14) in the left chamber, the magnetic push buttons that is made of debugging button (1) and magnet steel spring (2) is equipped with the upper end in left chamber, in the right chamber printed circuit board (8) is housed, tongue tube (7) is installed on the printed circuit board (8), is connected with display device (18).
2. miniaturized intelligent differential pressure according to claim 1, it is characterized in that, be perfused with epoxy resin (38) sealing in the cavity of the interior signal line passes of described sensor measurement assembly (10), circuit board (33) is fastenedly connected with screw (34) and room (31), and use silica gel sealing, connector (45) joins with input, output signal and power supply respectively.
3. miniaturized intelligent differential pressure according to claim 1 is characterized in that, the interior temperature sensor of described sensor measurement assembly (10) (41) is a DS1820 thermometric chip, precision reaches ± and 0.5 ℃.
4. miniaturized intelligent differential pressure according to claim 1, it is characterized in that, the pin of the connection terminal (14) in its left chamber of described electronic cartridge leads to right chamber, with epoxy resin (16) sealing, be welded with connector (9) on the pin of terminal (14) between pin and the chamber; Printed circuit board (8) is fastened on the electronic cartridge (3) by screw (17): display device (18) is connected with contact pin (19) on the printed circuit board (8) by socket (20), and fixedly connected by screw (22).
5. miniaturized intelligent differential pressure according to claim 1, it is characterized in that, the right chamber end of described electronic cartridge (3) is by screw thread and by clear glass (6), and O-ring seal (5), compacting ring (21), high lid (4) are formed and shown that end cap seal is affixed.
6. miniaturized intelligent differential pressure according to claim 1 is characterized in that, described electronic cartridge (3) left chamber end is affixed with low lid (15) sealing that O-ring seal (5) is housed by screw thread.
7. according to claim 1 or 4 described miniaturized intelligent differential pressure, it is characterized in that, described display device (18) is provided with four socket and the screw holes arranged by 90 degree, and display device is installed by 0 degree, 90 degree, 180 degree, four different directions of 270 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410099261XA CN100416250C (en) | 2004-12-29 | 2004-12-29 | Miniaturized intelligent differential pressure / pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410099261XA CN100416250C (en) | 2004-12-29 | 2004-12-29 | Miniaturized intelligent differential pressure / pressure transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1796957A true CN1796957A (en) | 2006-07-05 |
| CN100416250C CN100416250C (en) | 2008-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410099261XA Active CN100416250C (en) | 2004-12-29 | 2004-12-29 | Miniaturized intelligent differential pressure / pressure transmitter |
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| CN (1) | CN100416250C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839785A (en) * | 2009-02-17 | 2010-09-22 | 长野计器株式会社 | Sensor |
| CN101922988A (en) * | 2010-07-27 | 2010-12-22 | 浙江欧德利科技有限公司 | Pressure transmitter with integrated encapsulation type sensor |
| CN102331351A (en) * | 2011-06-14 | 2012-01-25 | 山东电力研究院 | Connection method for differential pressure transmitter special for test |
| CN102365528A (en) * | 2010-03-04 | 2012-02-29 | 罗斯蒙德公司 | Process variable transmitter with display |
| CN107255543A (en) * | 2017-07-19 | 2017-10-17 | 无锡威孚高科技集团股份有限公司 | Differential pressure pickup and preparation method |
| CN109855787A (en) * | 2019-03-06 | 2019-06-07 | 无锡昆仑富士仪表有限公司 | One kind being mounted directly type high pressure power transmitter |
| CN110349738A (en) * | 2019-07-12 | 2019-10-18 | 杭州富阳锐明科技有限公司 | A kind of electronic component using in resistance variations protection monocrystalline silicon differential pressure transmitter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4970898A (en) * | 1989-09-20 | 1990-11-20 | Rosemount Inc. | Pressure transmitter with flame isolating plug |
| CN2062112U (en) * | 1989-11-24 | 1990-09-12 | 祁化森 | Explosion insulated magnetic starter remote control button |
| EP1085310A1 (en) * | 1999-09-15 | 2001-03-21 | Endress + Hauser GmbH + Co. | Transmitter |
| EP1126259B1 (en) * | 2000-02-15 | 2008-12-10 | Endress + Hauser GmbH + Co. KG | Pressure sensor |
| CN2491939Y (en) * | 2001-06-13 | 2002-05-15 | 上海宇软电子设备有限公司 | Display used for intelligent differential transformer |
| CN1425901A (en) * | 2003-01-15 | 2003-06-25 | 中国计量学院 | Integrated intelligent cavity flow meter |
| CN2760530Y (en) * | 2004-12-29 | 2006-02-22 | 上海自动化仪表股份有限公司 | Miniaturization intelligent pressure difference/pressure transmitter |
-
2004
- 2004-12-29 CN CNB200410099261XA patent/CN100416250C/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839785A (en) * | 2009-02-17 | 2010-09-22 | 长野计器株式会社 | Sensor |
| CN101839785B (en) * | 2009-02-17 | 2014-01-29 | 长野计器株式会社 | Sensor |
| CN102365528A (en) * | 2010-03-04 | 2012-02-29 | 罗斯蒙德公司 | Process variable transmitter with display |
| CN102365528B (en) * | 2010-03-04 | 2014-12-17 | 罗斯蒙特公司 | Process variable transmitter with display |
| CN101922988B (en) * | 2010-07-27 | 2012-07-25 | 浙江欧德利科技有限公司 | Pressure transmitter with integrated encapsulation type sensor |
| CN101922988A (en) * | 2010-07-27 | 2010-12-22 | 浙江欧德利科技有限公司 | Pressure transmitter with integrated encapsulation type sensor |
| CN102331351A (en) * | 2011-06-14 | 2012-01-25 | 山东电力研究院 | Connection method for differential pressure transmitter special for test |
| CN102331351B (en) * | 2011-06-14 | 2013-01-02 | 山东电力研究院 | Connection method for differential pressure transmitter special for test |
| CN107255543A (en) * | 2017-07-19 | 2017-10-17 | 无锡威孚高科技集团股份有限公司 | Differential pressure pickup and preparation method |
| CN109855787A (en) * | 2019-03-06 | 2019-06-07 | 无锡昆仑富士仪表有限公司 | One kind being mounted directly type high pressure power transmitter |
| CN109855787B (en) * | 2019-03-06 | 2023-11-03 | 无锡昆仑富士仪表有限公司 | Direct-mounting high-pressure transmitter |
| CN110349738A (en) * | 2019-07-12 | 2019-10-18 | 杭州富阳锐明科技有限公司 | A kind of electronic component using in resistance variations protection monocrystalline silicon differential pressure transmitter |
| CN110349738B (en) * | 2019-07-12 | 2020-06-30 | 安第斯新材料科技(浙江)有限公司 | Electronic element in monocrystalline silicon differential pressure transmitter is protected by resistance change |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100416250C (en) | 2008-09-03 |
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Owner name: SHANGHAI AUTOMATION INSTRUMENTATION CO., LTD. Free format text: FORMER OWNER: SHANGHAI AUTOMATIC INDUSTRUMENT AND METER CO LTD Effective date: 20150618 |
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Effective date of registration: 20150618 Address after: Zhabei District Shanghai City, No. 191 West Guangzhong road 200072 No. 7 Patentee after: Shanghai instrument and meter for automation company limited Address before: 200233, No. 41 Rainbow Road, Shanghai, Xuhui District Patentee before: Shanghai Automatic Industrument and Meter Co., Ltd. |