CN206056855U - A kind of capacitance differential pressure cell - Google Patents
A kind of capacitance differential pressure cell Download PDFInfo
- Publication number
- CN206056855U CN206056855U CN201621085770.1U CN201621085770U CN206056855U CN 206056855 U CN206056855 U CN 206056855U CN 201621085770 U CN201621085770 U CN 201621085770U CN 206056855 U CN206056855 U CN 206056855U
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- CN
- China
- Prior art keywords
- housing
- sensor
- capacitance
- pick
- differential pressure
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Abstract
A kind of capacitance differential pressure cell, including sensor assembly and measuring circuit module；Signal communication between the sensor assembly and measuring circuit module；The sensor assembly includes metal capacitance sensor and sensor housing；The metal capacitance sensor includes high pressure end connector, low pressure end connector and capacitance sensor chip, and the high pressure end connector, low pressure end connector are separately mounted to capacitance sensor chip both sides and are connected with capacitance sensor chip；There is inside the sensor housing cavity, the metal capacitance sensor is arranged in cavity；The measuring circuit module includes circuit board, cable terminal and pick-up housing；The pick-up housing side offers the delivery outlet for installing cable terminal；The circuit board is fixed on pick-up enclosure interior, for the measurement data of reception processing sensor.This utility model simple structure, under the certainty of measurement for not affecting capacitance differential pressure cell, reduces transmitter volume, is easy to onsite application and installs.
Description
Technical field
This utility model is related to sensor technology, more particularly to a kind of capacitance differential pressure cell.
Background technology
Capacitance differential pressure cell is a kind of field instrument, and it adopts differential capacitor as detecting element, whole transmitter
Mechanical is driven, adjusting apparatus, and measures solid floral structure of the part using totally-enclosed welding, therefore instrument structure is simple,
It is stable and reliable for performance, and with higher precision.And bulky folder is used in common capacitance differential pressure transducer
Plank frame, or there is the binding post cavity of special configuration in conventional capacitive formula differential pressure transmitter, cause the body of transmitter
Product is huge, needs using huge mounting bracket in the limited onsite application of installing space and installs screw, makes troubles.In order to
The volume of transmitter is reduced further, when volume is reduced, structure of transmitter is affected, and certainty of measurement can decrease.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model aims to provide a kind of compact, it is easy for installation simultaneously
Ensure high-precision capacitance differential pressure cell.
For achieving the above object, this utility model is adopted the following technical scheme that：
A kind of capacitance differential pressure cell, including sensor assembly and measuring circuit module；The sensor assembly and survey
Signal communication between amount circuit module；The sensor assembly includes metal capacitance sensor and sensor housing；The metal
Capacitance sensor includes high pressure end connector, low pressure end connector and capacitance sensor chip, the high pressure end connector, low pressure termination
Head is separately mounted to capacitance sensor chip both sides and is connected with capacitance sensor chip；Have inside the sensor housing
One cavity, the metal capacitance sensor are arranged in cavity；The measuring circuit module includes circuit board, cable terminal and change
Send housing；The pick-up housing side offers the delivery outlet for installing cable terminal；The circuit board is fixed in pick-up housing
Portion, for the measurement data of reception processing sensor.
Pressure is imported in capacitance sensor chip from high pressure end connector and low pressure end connector, and core body capacitance occurs to become
Change, output capacitance signal, capacitance signal accesses circuit board, through digitized compensation and calibration, by cable outputting standard telecommunications
Number, cable is drawn through cable terminal, accesses in-site measurement and control system.
Used as a kind of optimization of the present utility model, the sensor housing both sides offer pressure and import port, the height
Pressure side joint and low pressure end connector import port protrusion, the metal capacitance sensor from the pressure of sensor housing both sides respectively
It is connected using welding manner between sensor housing, using welding structure good sealing effect, it is to avoid potted component occurs aging
The risk of failure.
Used as a kind of optimization of the present utility model, the sensor housing lower end offers installing hole, is easy to condenser type poor
The in-site installation of pressure transmitter.
Used as a kind of optimization of the present utility model, the pick-up housing includes upper end cover, and the upper end cover lower end is arranged
There is external screw thread, the shell of transducer upper end is provided with female thread, and the external screw thread of the upper end cover is by screwing in female thread and becoming
Housing is sent to connect to form box body.
Used as a kind of optimization of the present utility model, the pick-up housing also includes sealing ring, installed in upper end cover and change
Send at the connector of device, good sealing effect.
Used as a kind of optimization of the present utility model, the shell of transducer is set to cylindrical shape, there is greater room and be easy to
The installation of circuit board.
As a kind of optimization of the present utility model, housing connection between the sensor housing and pick-up housing, is provided with
Part, is welded to connect by housing connection member between sensor housing and pick-up housing, is welded and fixed good sealing effect.
Used as a kind of optimization of the present utility model, the measuring circuit module also includes fixed column, the circuit board with
It is attached by fixed column between housing connection member, beneficial to fixing circuit board, prevents vibrations during operation from causing to circuit board
Infringement.
The beneficial effects of the utility model are：
This utility model on the premise of transmitter certainty of measurement is not reduced is changed using direct outlet of cable terminal etc. and is become
Send the mode of device structure to reduce the volume of transmitter, be easy to the in-site installation of capacitance differential pressure cell and use.
Description of the drawings
Fig. 1 is positive structure diagram of the present utility model；
Fig. 2 is side structure schematic view of the present utility model.
Reference：1st, upper end cover；2nd, sealing ring；3rd, pick-up housing；4th, cable terminal；5th, housing connection member；6th, sense
Device housing；7th, metal capacitance sensor；8th, circuit board；9th, fixed column.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, this utility model is described further：
As depicted in figs. 1 and 2, a kind of capacitance differential pressure cell, including sensor assembly and measuring circuit module；It is described
Signal communication between sensor assembly and measuring circuit module.
The sensor assembly includes metal capacitance sensor 7 and sensor housing 6；The metal capacitance sensor 7 is wrapped
High pressure end connector, low pressure end connector and capacitance sensor chip are included, the high pressure end connector, low pressure end connector are separately mounted to
Capacitance sensor chip both sides are simultaneously connected with capacitance sensor chip；There is inside the sensor housing 6 cavity, it is described
Metal capacitance sensor 7 is arranged in cavity；6 both sides of the sensor housing offer pressure and import port, the high-pressure side
Joint and low pressure end connector import port protrusion from the pressure of 6 both sides of sensor housing respectively, the metal capacitance sensor 7 with
Connected using welding manner between sensor housing 6, using welding structure good sealing effect, it is to avoid the aging mistake of potted component occurs
The risk of effect；6 lower end of the sensor housing offers installing hole, is easy to the in-site installation of capacitance differential pressure cell, due to
Structural volume is little, lightweight, therefore installs the fixed huge installation adopted without using conventional capacitive formula differential pressure transmitter
Frame and installation screw.Pressure is imported in capacitance sensor chip from high pressure end connector and low pressure end connector, and core body capacitance is sent out
Changing, output capacitance signal, the output signal of metal capacitance sensor 7 are connected to circuit board 8 through wire.
The measuring circuit module includes circuit board 8, cable terminal 4 and pick-up housing 3；Open 3 side of pick-up housing
It is provided with the delivery outlet for installing cable terminal 4；The circuit board 8 is fixed on inside pick-up housing 3, for reception processing sensor
Measurement data；The pick-up housing 3 includes upper end cover 1, and 1 lower end of the upper end cover is provided with external screw thread, the transmitter enclosure
Body upper end is provided with female thread, and the external screw thread of the upper end cover 1 is connected to form box body with pick-up housing 3 by screwing in female thread；
The pick-up housing 3 also includes sealing ring 2, at connector of the upper end cover 1 with transmitter, good sealing effect.It is described
Shell of transducer is set to cylindrical shape, there is the installation that greater room is easy to circuit board 8.The sensor housing 6 and pick-up shell
Housing connection member 5 is provided between body 3, welding company is carried out by housing connection member 5 between sensor housing 6 and pick-up housing 3
Connect, be welded and fixed good sealing effect.The measuring circuit module also includes fixed column 9, the circuit board 8 and housing connection member
It is attached by fixed column 9 between 5, beneficial to fixing circuit board 8, vibrations when preventing operation cause damage to circuit board 8.Pressure
Power Jing high and low pressure end connector imports to the measuring diaphragm of capacitance sensor core body, and core body capacitance changes, output capacitance letter
Number, capacitance signal accesses circuit board 8, and through digitized compensation and calibration, circuit board 8 is exported through cable after signal is amplified,
By the cable outputting standard signal of telecommunication, cable is drawn through cable terminal 4, accesses in-site measurement and control system；Using cable
4 direct outlet method of terminal, eliminates the binding post cavity of the special configuration of conventional capacitive formula differential pressure transmitter, further drops
The low volume of product.
A kind of capacitance differential pressure cell of this utility model, its volume less than common metal capacitance differential pressure cell 1/
3, through test, the capacitance differential pressure cell certainty of measurement will not be affected by volume-diminished, volume up to 0.075%
Exquisiteness, it is easy for installation.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of this utility model claim
Within the scope of.
Claims (8)
1. a kind of capacitance differential pressure cell, it is characterised in that including sensor assembly and measuring circuit module；The sensor
Signal communication between module and measuring circuit module；The sensor assembly includes metal capacitance sensor and sensor housing；
The metal capacitance sensor includes high pressure end connector, low pressure end connector and capacitance sensor chip, the high pressure end connector,
Low pressure end connector is separately mounted to capacitance sensor chip both sides and is connected with capacitance sensor chip；The sensor housing
Internal to have a cavity, the metal capacitance sensor is arranged in cavity；The measuring circuit module includes circuit board, cable
Terminal and pick-up housing；The pick-up housing side offers the delivery outlet for installing cable terminal；The circuit board is fixed on change
Enclosure interior is sent, for the measurement data of reception processing sensor.
2. capacitance differential pressure cell according to claim 1, it is characterised in that the sensor housing both sides offer
Pressure imports port, and the pressure importing port of the high pressure end connector and low pressure end connector respectively from sensor housing both sides is convex
Go out, connected using welding manner between the metal capacitance sensor and sensor housing.
3. capacitance differential pressure cell according to claim 2, it is characterised in that the sensor housing lower end offers
Installing hole.
4. capacitance differential pressure cell according to claim 1, it is characterised in that the pick-up housing includes upper end
Lid, the upper end cover lower end are provided with external screw thread, and the shell of transducer upper end is provided with female thread, the outer spiral shell of the upper end cover
Stricture of vagina is connected to form box body with pick-up housing by screwing in female thread.
5. capacitance differential pressure cell according to claim 4, it is characterised in that the pick-up housing also includes sealing
Circle, at connector of the upper end cover with transmitter.
6. the capacitance differential pressure cell according to claim 1 or 4 or 5, it is characterised in that the shell of transducer is arranged
For cylindrical shape.
7. capacitance differential pressure cell according to claim 1, it is characterised in that the sensor housing and pick-up housing
Between be provided with housing connection member, be welded to connect by housing connection member between sensor housing and pick-up housing.
8. capacitance differential pressure cell according to claim 1, it is characterised in that the measuring circuit module is also included
Fixed column, is attached by fixed column between the circuit board and housing connection member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621085770.1U CN206056855U (en) | 2016-09-27 | 2016-09-27 | A kind of capacitance differential pressure cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621085770.1U CN206056855U (en) | 2016-09-27 | 2016-09-27 | A kind of capacitance differential pressure cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206056855U true CN206056855U (en) | 2017-03-29 |
Family
ID=58366058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621085770.1U Expired - Fee Related CN206056855U (en) | 2016-09-27 | 2016-09-27 | A kind of capacitance differential pressure cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206056855U (en) |
-
2016
- 2016-09-27 CN CN201621085770.1U patent/CN206056855U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20180927 |