CN205538095U - Pressure check gauge - Google Patents

Pressure check gauge Download PDF

Info

Publication number
CN205538095U
CN205538095U CN201620339155.2U CN201620339155U CN205538095U CN 205538095 U CN205538095 U CN 205538095U CN 201620339155 U CN201620339155 U CN 201620339155U CN 205538095 U CN205538095 U CN 205538095U
Authority
CN
China
Prior art keywords
pressure
power supply
input
outfan
microcontroller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620339155.2U
Other languages
Chinese (zh)
Inventor
王鹰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Hangwei Shuojie Electronic Co Ltd
Original Assignee
Beijing Hangwei Shuojie Electronic Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Hangwei Shuojie Electronic Co Ltd filed Critical Beijing Hangwei Shuojie Electronic Co Ltd
Priority to CN201620339155.2U priority Critical patent/CN205538095U/en
Application granted granted Critical
Publication of CN205538095U publication Critical patent/CN205538095U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Measuring Fluid Pressure (AREA)

Abstract

The utility model provides a pressure check gauge, including the pressure casing, the bottom intercommunication of pressure casing has the pressure pipe, the pressure pipe has the external screw thread that is used for with external pressure source threaded connection, the pressure pipe with the inside fixed mounting in crossing position of pressure casing has pressure sensor, it has microcontroller, electric signal measurement unit and built -in temperature sensor to go back fixed mounting in the shell of pressure casing, the conch wall of pressure casing still is provided with pressure switch signal input terminal, electrical signal input output terminal, communication interface, display screen and button. The utility model provides a pressure check gauge has following advantage: a powerful's portable professional pressure check gauge, have that the function is various, an advantage of simple structure, sturdy and durable, high stability, high reliability.

Description

Pressure testers
Technical field
This utility model belongs to technology of instrument and meter field, is specifically related to one and had both possessed pressure checking measurement merit Can, possess again the pressure testers of electrical signal detection function.
Background technology
Manometer used in the field such as commercial production, pressure measxurement, in use for some time, Need it is verified, so that it is determined that this manometer is the most accurate.Pressure testers is i.e. verification pressure Instrument instrument the most accurately.
But, existing pressure testers, generally there is function singleness, baroque deficiency.
Utility model content
The defect existed for prior art, this utility model provides a kind of pressure testers, can effectively solve The problems referred to above.
The technical solution adopted in the utility model is as follows:
This utility model provides a kind of pressure testers, and including pressure casing, the bottom of described pressure casing connects Being connected with manometer tube, described manometer tube has the external screw thread for threadeding with external pressure source;Described pressure Pipe is installed with pressure transducer, by described pressure sensing inside the intersection location of described pressure casing Device, is divided into independent sealed chamber by described manometer tube and described pressure casing, and, described pressure sensing The pressure measxurement of device facing to the inner chamber of described manometer tube, the pressure signal output face court of described pressure transducer Inner chamber to described pressure casing;
It addition, be also installed with in the shell of described pressure casing microcontroller, electric signal measurement unit and Built-in temperature sensor;The shell wall of described pressure casing is additionally provided with pressure switch signal input terminal, telecommunications Number input and output terminal, communication interface, display screen and button;The outfan of described pressure transducer and described The outfan of signal of telecommunication input and output terminal is connected respectively to the input of described electric signal measurement unit;Described The outfan of electric signal measurement unit is connected to the input of described microcontroller;Described pressure switch signal is defeated Enter terminal and described built-in temperature sensor is connected respectively to the input of described microcontroller;Described microcontroller The outfan of device respectively with described communication interface, described display screen and described by bonded.
Preferably, described electric signal measurement unit includes the A/D change-over circuit of series connection, signal amplification circuit and defeated Enter protection circuit.
Preferably, described display screen is segment liquid crystal display screen.
Preferably, power supply circuits are also included;Described power supply circuits include: power supply/charge control circuit, charging Interface, rechargeable battery and DC24V power supply;
Described power supply/charge control circuit has two inputs and 1 outfan;Described power supply/charge controls 1st input of circuit is connected to described microcontroller;2nd input of described power supply/charge control circuit is even Receive described charging inlet;The outfan of described power supply/charge control circuit is connected to the defeated of described rechargeable battery Enter end;Described rechargeable battery outfan is connected respectively to the input of described DC24V power supply, described microcontroller The feeder ear of device, the feeder ear of described pressure transducer and the feeder ear of described electric signal measurement unit;Described The outfan of DC24V power supply is connected to the feeder ear of described signal of telecommunication input and output terminal.
Preferably, described power supply circuits also include battery temperature sensor;Described battery temperature sensor is installed In the surface of described rechargeable battery, for detecting the surface temperature of described rechargeable battery, described battery temperature passes The outfan of sensor is connected to described microcontroller.
Preferably, described power supply circuits also include power switch key;One end of described power switch key is connected to Described microcontroller;The other end of described power switch key is connected to described power supply/charge control circuit.
Preferably, buzzer is also included;Described buzzer is fixedly installed in the shell of described pressure casing;Institute State buzzer to be connected with described microcontroller.
The pressure testers that this utility model provides has the advantage that
It is a powerful portable specialty pressure testers, there is diverse in function, simple in construction, heavily fortified point Gu durable, the advantage of high stability, high reliability.
Accompanying drawing explanation
The structural representation of the pressure testers that Fig. 1 provides for this utility model.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearer, Below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that herein Described specific embodiment, only in order to explain this utility model, is not used to limit this utility model.
In conjunction with Fig. 1, this utility model provides a kind of pressure testers, including pressure casing, the end of pressure casing Portion is communicated with manometer tube, and manometer tube has the external screw thread for threadeding with external pressure source;Manometer tube with It is installed with pressure transducer, by pressure transducer, by manometer tube inside the intersection location of pressure casing It is divided into independent sealed chamber with pressure casing, and, the pressure measxurement of pressure transducer is facing to manometer tube Inner chamber, the pressure signal output face of pressure transducer is towards the inner chamber of pressure casing;
It addition, be also installed with in the shell of pressure casing in microcontroller, electric signal measurement unit and machine Temperature sensor;The shell wall of pressure casing is additionally provided with pressure switch signal input terminal, the signal of telecommunication inputs defeated Go out terminal, communication interface, display screen and button;The outfan of pressure transducer and signal of telecommunication input/output terminal The outfan of son is connected respectively to the input of electric signal measurement unit;The outfan of electric signal measurement unit is even Receiving the input of microcontroller, wherein, electric signal measurement unit includes the A/D change-over circuit of series connection, signal Amplifying circuit and input protection circuit.Pressure switch signal input terminal and built-in temperature sensor connect respectively Input to microcontroller;The outfan of microcontroller respectively with communication interface, display screen and by bonded. Wherein, display screen can use LCDs.Also include buzzer;Buzzer is fixedly installed in pressure casing Shell in;Buzzer is connected with microcontroller.
The pressure testers that this utility model provides, its operation principle is:
When needs carry out pressure checking to certain manometer, external pressure source is threaded connection mode It is installed to the pressure connection of pressure testers;Then, pressure when being pressurizeed by pressure source, within manometer tube Force transducer uses the pressure transducer of high stability, and it collects the pressure signal of analog quantity, analog quantity Pressure signal, after the A/D of low-function 24 changes, obtains the pressure signal of digital quantity, then puts through signal After great, it is input to microcontroller;Microcontroller, by being analyzed the pressure signal received, is pressed Force value, and be shown in display screen;
The pressure testers provided due to this utility model, for high-precision instrument.Therefore, can be to low precision The force value that Pressure gauge collects verifies.
It is connected owing to pressure testers is threaded connection mode with external pressure source, there is easily installation, operation Advantage easily.Further, since pressure transducer and signal of telecommunication input and output terminal share electric signal measurement list Unit, can simplify pressure testers circuit structure, reduces cost.
The pressure testers that this utility model provides, in addition to the function with pressure checking, also has following auxiliary Assist energy:
(1) by signal of telecommunication input and output terminal, voltage x current value can be measured.Specifically, can measure (-30~ 30) d. c. voltage signal of V;The current signal of (-30~30) mA can be measured.
(2) by pressure switch signal input terminal, switching signal can be measured.
(3) by built-in temperature sensor, built-in temperature can be measured.
(4) communication interface can use RS232 interface, can be with computer communication, transmission measurement data etc..
(5) pressure overload warning function: when pressure measuring value exceedes the 120% of range, buzzer can have joint That plays sends prompt tone.
(6) display function: use duplicate rows segmentation FSTN liquid crystal display screen, the ash end, white backlight, full 6 displays.
(7) power supply circuits
This utility model the most also includes power supply circuits;Power supply circuits include: power supply/charge control circuit, charging Interface, rechargeable battery and DC24V power supply;
Power supply/charge control circuit has two inputs and 1 outfan;The 1st of power supply/charge control circuit Input is connected to microcontroller;2nd input of power supply/charge control circuit is connected to charging inlet;Power supply The outfan of/charging control circuit is connected to the input of rechargeable battery;Rechargeable battery outfan is connected respectively to The input of DC24V power supply, the feeder ear of microcontroller, the feeder ear of pressure transducer and electric signal measurement The feeder ear of unit;The outfan of DC24V power supply is connected to the feeder ear of signal of telecommunication input and output terminal.Supply Electricity circuit also includes power switch key;One end of power switch key is connected to microcontroller;Power switch key The other end is connected to power supply/charge control circuit.
It addition, power supply circuits also include battery temperature sensor;Battery temperature sensor is installed on rechargeable battery Surface, for detecting the surface temperature of rechargeable battery, the outfan of battery temperature sensor is connected to micro-control Device processed.By installing battery temperature sensor, the safety that battery uses can be improved.
As can be seen here, the pressure testers that this utility model provides, is a powerful portable specialty Pressure testers, have diverse in function, simple in construction, sturdy and durable, high stability, high reliability excellent Point, both can enter pointer pressure, pressure transmitter, pressure transducer, sphygomanometer and pressure switch Row calibration operation, it is also possible to be used alone as a high-precision pressure instrument.Therefore, can be widely applied to The industries such as oil, electric power, chemical industry, metallurgy, metering, Aero-Space, teaching and railway.
The above is only preferred implementation of the present utility model, it is noted that for the art For those of ordinary skill, on the premise of without departing from this utility model principle, it is also possible to make some improvement And retouching, these improvements and modifications also should regard protection domain of the present utility model.

Claims (7)

1. a pressure testers, it is characterised in that include that pressure casing, the bottom of described pressure casing connect Being connected with manometer tube, described manometer tube has the external screw thread for threadeding with external pressure source;Described pressure Pipe is installed with pressure transducer, by described pressure sensing inside the intersection location of described pressure casing Device, is divided into independent sealed chamber by described manometer tube and described pressure casing, and, described pressure sensing The pressure measxurement of device facing to the inner chamber of described manometer tube, the pressure signal output face court of described pressure transducer Inner chamber to described pressure casing;
It addition, be also installed with in the shell of described pressure casing microcontroller, electric signal measurement unit and Built-in temperature sensor;The shell wall of described pressure casing is additionally provided with pressure switch signal input terminal, telecommunications Number input and output terminal, communication interface, display screen and button;The outfan of described pressure transducer and described The outfan of signal of telecommunication input and output terminal is connected respectively to the input of described electric signal measurement unit;Described The outfan of electric signal measurement unit is connected to the input of described microcontroller;Described pressure switch signal is defeated Enter terminal and described built-in temperature sensor is connected respectively to the input of described microcontroller;Described microcontroller The outfan of device respectively with described communication interface, described display screen and described by bonded.
Pressure testers the most according to claim 1, it is characterised in that described electric signal measurement unit A/D change-over circuit, signal amplification circuit and input protection circuit including series connection.
Pressure testers the most according to claim 1, it is characterised in that described display screen is segmentation liquid Crystal display screen.
Pressure testers the most according to claim 1, it is characterised in that also include power supply circuits;Institute State power supply circuits to include: power supply/charge control circuit, charging inlet, rechargeable battery and DC24V power supply;
Described power supply/charge control circuit has two inputs and 1 outfan;Described power supply/charge controls 1st input of circuit is connected to described microcontroller;2nd input of described power supply/charge control circuit is even Receive described charging inlet;The outfan of described power supply/charge control circuit is connected to the defeated of described rechargeable battery Enter end;Described rechargeable battery outfan is connected respectively to the input of described DC24V power supply, described microcontroller The feeder ear of device, the feeder ear of described pressure transducer and the feeder ear of described electric signal measurement unit;Described The outfan of DC24V power supply is connected to the feeder ear of described signal of telecommunication input and output terminal.
Pressure testers the most according to claim 4, it is characterised in that described power supply circuits also include Battery temperature sensor;Described battery temperature sensor is installed on the surface of described rechargeable battery, is used for detecting The surface temperature of described rechargeable battery, the outfan of described battery temperature sensor is connected to described microcontroller.
Pressure testers the most according to claim 4, it is characterised in that described power supply circuits also include Power switch key;One end of described power switch key is connected to described microcontroller;Described power switch key The other end is connected to described power supply/charge control circuit.
Pressure testers the most according to claim 1, it is characterised in that also include buzzer;Described Buzzer is fixedly installed in the shell of described pressure casing;Described buzzer is connected with described microcontroller.
CN201620339155.2U 2016-04-21 2016-04-21 Pressure check gauge Expired - Fee Related CN205538095U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620339155.2U CN205538095U (en) 2016-04-21 2016-04-21 Pressure check gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620339155.2U CN205538095U (en) 2016-04-21 2016-04-21 Pressure check gauge

Publications (1)

Publication Number Publication Date
CN205538095U true CN205538095U (en) 2016-08-31

Family

ID=56796444

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620339155.2U Expired - Fee Related CN205538095U (en) 2016-04-21 2016-04-21 Pressure check gauge

Country Status (1)

Country Link
CN (1) CN205538095U (en)

Similar Documents

Publication Publication Date Title
CN100535624C (en) Digital pressure testers
CN103364367B (en) Mine digital oxidizing gases parameter measurement early warning system
CN205538095U (en) Pressure check gauge
CN201335718Y (en) Bubble-type water gauge
CN201811817U (en) Pressure gauge
KR101483755B1 (en) An apparatus for measuring gas pressure and temperature in gas pipe
CN203572987U (en) Intelligent alarm pluviometer
CN203534694U (en) Remote-control digital weighing machine with temperature compensation function
CN203672432U (en) High-precision low-power-consumption membrane-type gas flow totalizer
CN204085583U (en) Portable orifice-plate measuring instrument
CN204461518U (en) A kind of heating type turbine integral type flowmeter
CN203287127U (en) Internet of things digital electric contact pressure gauge
CN103257016B (en) Portable positive and negative air pressure wireless remote measuring device
CN204439268U (en) A kind of Micro Energy Lose digital pressure gauge
CN104655353A (en) Micro power digital pressure gauge and pressure measuring method
CN202485857U (en) Digital display pressure gauge
CN2929684Y (en) Digital pressure corrector
CN204730977U (en) The pressure unit for electrical stability can be promoted
CN204730975U (en) Can the pressure unit of promotion signal conversion accuracy
IT201900009168A1 (en) Gas measuring device.
CN102013184A (en) Simulation digital pressure gage
CN212082474U (en) Integrated orifice plate flowmeter and gas flow monitoring equipment
CN103234686B (en) Pressure detection circuit and pressure gauge with digital display
CN220230611U (en) NB remote transmission ultrasonic water meter with intelligent monitoring function
CN220357447U (en) NB remote transmission ultrasonic water meter controller

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160831

CF01 Termination of patent right due to non-payment of annual fee