CN104792458B - A kind of wireless pressure data collecting instrument calibrating installation and method thereof - Google Patents
A kind of wireless pressure data collecting instrument calibrating installation and method thereof Download PDFInfo
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- CN104792458B CN104792458B CN201510192576.7A CN201510192576A CN104792458B CN 104792458 B CN104792458 B CN 104792458B CN 201510192576 A CN201510192576 A CN 201510192576A CN 104792458 B CN104792458 B CN 104792458B
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Abstract
The invention discloses a kind of wireless pressure data collecting instrument calibrating installation, including pressurized tank, pressure tank cover and pressure regulation unit；Described pressure tank cover is arranged on pressurized tank, and described pressure regulation unit communicates and regulate the pressure in pressurized tank by conduit with described pressurized tank.Wireless pressure data collecting instrument to be measured is arranged in the pressurized tank of sealing by the present invention, the pressure in pressurized tank is adjusted by pressure regulation unit, wireless pressure data collecting instrument is calibrated at each pressure spot, and obtain Acquisition Instrument in the error of indication of each calibration point and hysterisis error, solve wireless pressure data collecting instrument magnitude tracing problem.
Description
Technical field
The present invention relates to a kind of instrument calibration devices and methods therefor, particularly relate to a kind of wireless pressure data collecting instrument calibrating installation and
Its method.
Background technology
Along with the development of wireless sensor technology, wireless pressure data collecting instrument is widely used in measuring pressure in hermetic container.Please join
Readding Fig. 1, it is the structural representation of existing wireless pressure data collecting instrument 10.Wireless pressure data collecting instrument 10 includes pressure
Sensor 11, signal condition unit 12, AD sampling unit 13, microprocessor 14, RF module 15 and memorizer 16.Institute
State pressure transducer 11 to export the signal of telecommunication and amplify through signal condition unit 12, A/D convertor circuit 13 be converted to digital signal and send
Enter microprocessor 14 and carry out data process, be transmitted to receive terminal or data are stored in memorizer 16 by RF module 15.
Wireless pressure data collecting instrument the most first arranges mode of operation, acquisition interval, start and stop condition, then inserts pressure seal container,
Equipment pressurizes, and reads wireless pressure data collecting instrument indicating value and acquisition time in real time.In order to ensure and improve wireless pressure data acquisition
The measuring accuracy of collection instrument and stability, it is necessary to wireless pressure data collecting instrument is carried out periodic dosages calibration.And wireless pressure data
Acquisition Instrument is different from normal pressures measuring instrument, and it does not possess compression fittings, without jointing during measurement；And wireless pressure
The maximum temperature that data collecting instrument uses generally has been above 100 DEG C, and its interior sensor and measuring circuit are respectively provided with uniform temperature
Coefficient.Particularity based on wireless pressure data collecting instrument, the most not yet has and calibrates data acquisition instrument
Device.
Summary of the invention
The invention reside in and overcome the shortcoming of prior art with not enough, it is provided that a kind of that wireless pressure data collecting instrument is calibrated,
Pressure-adjustable, temp. controllable calibrating installation and method thereof.
The present invention is achieved by the following technical solutions: a kind of wireless pressure data collecting instrument calibrating installation, including pressurized tank,
Pressure tank cover and pressure regulation unit；Described pressure tank cover is arranged on pressurized tank, and described pressure regulation unit is by conduit and described pressurized tank
Communicate and regulate the pressure in pressurized tank.
Wireless pressure data collecting instrument to be measured is arranged in the pressurized tank of sealing by the present invention, is adjusted in pressurized tank by pressure regulation unit
Pressure, calibrates at each pressure spot wireless pressure data collecting instrument, and obtains the Acquisition Instrument indicating value mistake at each calibration point
Difference and hysterisis error, solve wireless pressure data collecting instrument magnitude tracing problem.
Further, controller, thermostat and temperature sensor are also included；Described pressurized tank is arranged in described thermostat, institute
Stating temperature sensor to be arranged in described pressurized tank, described temperature sensor and thermostat are connected with described controller respectively, described
Controller is connected with described pressure regulation unit.
Further, described pressure regulation unit includes: digital pressure gauge standard, air inlet pipe, exhaustor, intake valve and air bleeding valve；
The pressure that described digital pressure gauge standard is connected with the compression fittings on pressure tank cover and measures in pressurized tank, described air inlet pipe and
Exhaustor communicates through pressure tank cover with described pressurized tank, and described intake valve is arranged in air inlet pipe, and described air bleeding valve is arranged on row
Tracheal strips.
Further, described pressure regulation unit includes pressure surge tank, airway, intake valve, air pump, air outlet valve, pressure sensing
Device and pressure transmitter；Described pressure surge tank one end is connected with described air pump by airway and intake valve, and the other end is by leading
Trachea and air outlet valve are connected with described pressurized tank；Described pressure transducer be arranged between described air outlet valve and described pressurized tank and with
Described pressurized tank communicates, and is connected with described controller；Described intake valve and air outlet valve are connected with described controller, described pressure
Transmitter communicates with described pressure surge tank and measures the pressure size in pressure surge tank；Described pressure transmitter and described control
Device connects.
Further, described pressurized tank is high pressure resistant, high temperature resistant and the good airtight tank body of heat-conductive characteristic.
Further, described pressure tank cover is lid high pressure resistant, high temperature resistant, that heat-conductive characteristic is good and sealing is good.
Further, described pressure tank cover is tightly connected with described pressurized tank.
Present invention also offers a kind of wireless pressure data collecting instrument calibration steps, comprise the steps:
Step 1: carry out pressure indicating value calibration；Wireless pressure data collecting instrument to be measured is positioned in pressurized tank, by pressure tank cover
Tighten and make pressurized tank seal；Set the temperature of thermostat by controller, make the temperature in pressurized tank be maintained on certain value；To
Pressurized tank ventilation pressurization, and the size of pointwise raising pressure pressure inside the tank, obtain digital pressure gauge standard or pressure transducer exist
The indicating value of each pressure spot, obtains the Acquisition Instrument positive and negative stroke indicating value at each pressure spot, and calculates the error of indication of Acquisition Instrument and return
Journey error；
Step 2: carry out temperature characterisitic calibration；Holding pressure pressure inside the tank is on certain value, by controller regulation thermostat
Temperature, changes the temperature in pressurized tank, obtains the positive and negative stroke indicating value of Acquisition Instrument at different temperatures, and calculate the error of indication
And hysterisis error.
In order to be more fully understood that and implement, describe the present invention below in conjunction with the accompanying drawings in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing wireless pressure data collecting instrument 10；
Fig. 2 is the structural representation of the embodiment of the present invention 1 wireless pressure data collecting instrument calibrating installation 20；
Fig. 3 is the structural representation of the embodiment of the present invention 2 wireless pressure data collecting instrument calibrating installation 30；
Fig. 4 is the System Working Principle figure of the embodiment of the present invention 2 wireless pressure data collecting instrument calibrating installation 30；
Fig. 5 is the structural representation of thermostat 32 shown in Fig. 3；
Fig. 6 is the flow chart of embodiment 2 wireless pressure data collecting instrument calibration using method；
Fig. 7 is the structural representation of the embodiment of the present invention 3 wireless pressure data collecting instrument calibrating installation 40；
Fig. 8 is the System Working Principle figure of the embodiment of the present invention 3 wireless pressure data collecting instrument calibrating installation 40；
Fig. 9 is the structural representation of pressure regulation unit shown in Fig. 7 43；
Figure 10 is the structural representation of the embodiment of the present invention 4 wireless pressure data collecting instrument calibrating installation 50；
Figure 11 is the System Working Principle figure of the embodiment of the present invention 4 wireless pressure data collecting instrument calibrating installation 50.
Detailed description of the invention
Embodiment 1
Referring to Fig. 2, it is the structural representation of the embodiment of the present invention 1 wireless pressure data collecting instrument calibrating installation 20.This nothing
Line pressure data Acquisition Instrument calibrating installation 20 includes: pressurized tank 21, pressure tank cover 22 and pressure regulation unit 23；Described pressure tank cover
22 are arranged on pressurized tank 21, and described pressure regulation unit 23 is communicated and regulate by conduit with described pressurized tank 21 in pressurized tank 21
Pressure.
Described pressure regulation unit 23 includes digital pressure gauge standard 231, air inlet pipe 232, exhaustor 233, intake valve 234 and
Air bleeding valve 235.Described pressure tank cover 22 is arranged on pressurized tank 21, described digital pressure gauge standard 231 and pressure tank cover
The pressure that compression fittings (not shown) on 22 connects and measures in pressurized tank.Described air inlet pipe 232 and exhaustor 233 are worn
Excess pressure cover 22 communicates with described pressurized tank 21, and described intake valve 234 is arranged in air inlet pipe 232, described air inlet pipe 232
It is connected with nitrogen cylinder or Manual pressurization pump, and is controlled the size of air inlet by intake valve 234；Described air bleeding valve 235 is arranged
In exhaustor 233.Manually regulate described air bleeding valve 235 and intake valve 234 and control the size of pressure in pressurized tank 21.
Concrete, described pressurized tank 21 is high pressure resistant, high temperature resistant and the good airtight tank body of heat-conductive characteristic.Matchingly, described
The lid that pressure tank cover 22 is high pressure resistant, high temperature resistant and heat-conductive characteristic is good and sealing is good.For guaranteeing that Acquisition Instrument tests pressure
The accuracy of pressure in tank 21, described pressure tank cover 22 is tightly connected with described pressurized tank 21.
At normal temperatures, when wireless pressure data collecting instrument 24 is carried out the calibration of pressure indicating value, by wireless pressure data instrument 24 to be measured
It is positioned in pressurized tank 21, pressure tank cover 22 is tightened and makes pressurized tank 21 seal.Open intake valve 234, external air source is led to
Cross the air inlet pipe 232 pressure in pressurized tank 21 ventilation pressurization, and pointwise raising pressurized tank 21；Record digital pressure gauge standard
Device 231 is in the indicating value of each pressure spot；Obtain the wireless pressure data collecting instrument 24 positive and negative stroke indicating value at each pressure spot；And count
Calculate wireless pressure data collecting instrument 24 error of indication and hysterisis error, it is achieved to wireless pressure data collecting instrument 24 pressure measxurement model
Enclose the calibration of interior each point.
Concrete, to certain pressure calibration point measurement, first opens intake valve 234, by external air source by air inlet pipe 232 to
Pressurized tank 21 ventilation pressurization, in pressure process, the indicating value of Observable digital pressure gauge standard 231 is adjusted.Observation numeral pressure
When power meter 231 is near this pressure calibration point, close intake valve 232, record digital pressure gauge standard 231 after pressure stabilisation
Indicating value, and obtain and record the moment value of this indicating value.In the present invention, digital pressure gauge standard 231 is as standard instruction pressure
The pressure actual value of power tank 21.Pressure indicating value in wireless pressure data collecting instrument 24 real time record pressurized tank 21, is measured
After, read the indicating value of the wireless pressure data collecting instrument 234 corresponding with recording digital pressure gauge standard 231 moment.For protecting
The reliability of card data, to each base measuring pressure calibration point, need to obtain the indicating value of the positive and negative stroke of Acquisition Instrument, and calculate this point
The error of indication and hysterisis error.
The computing formula of the error of indication is as follows:
Δ p=pR-pS
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa；pRFor the Acquisition Instrument positive and negative stroke of each calibration point
Indicating value, its unit is kPa or MPa；pSFor digital pressure gauge standard in the indicating value of each calibration point, its unit be kPa or
MPa。
Hysterisis error may utilize the data of the error of indication and calculates, and takes difference absolute of the positive and negative stroke indicating value of same calibration point
It is worth the hysterisis error as wireless pressure data collecting instrument.
Wireless pressure data collecting instrument to be measured is arranged in the pressurized tank of sealing by the present invention, regulates pressure by intake valve and air bleeding valve
Pressure in power tank, measures the actual pressure in pressurized tank by digital pressure gauge standard, exists wireless pressure data collecting instrument
Each pressure spot is calibrated, and obtains Acquisition Instrument in the error of indication of each calibration point and hysterisis error, solves wireless pressure
Data collecting instrument magnitude tracing problem.
Embodiment 2
It it is the knot of the wireless pressure data collecting instrument calibrating installation 30 of the embodiment of the present invention 2 please refer to Fig. 3 and Fig. 4, Fig. 3
Structure schematic diagram.Fig. 4 is the System Working Principle figure of the wireless pressure data collecting instrument calibrating installation 30 of the embodiment of the present invention 2.Should
Wireless pressure data collecting instrument calibrating installation 30 includes: include pressurized tank 31, thermostat 32, pressure tank cover 33, temperature sensing
Device 34, controller (not shown) and pressure regulation unit 35.Described pressurized tank 31 is arranged in described thermostat 32, described pressure
Power cover 33 is arranged on pressurized tank 31, and described temperature sensor 34 is arranged in described pressurized tank 31, described temperature sensing
Device 34 and thermostat 32 are connected with described controller respectively；Described pressure regulation unit 33 is communicated with described pressurized tank 31 by conduit
And the pressure measured and regulate in pressurized tank 31, and the pressure signal in the pressurized tank 31 of measurement is sent in controller.
Referring to Fig. 5, it is the structural representation of thermostat 32 shown in Fig. 3.Described thermostat 32 include thermostat body and
Temperature-control senser 321, described thermostat body has one for the cavity 322 of placement force tank 31, described temperature-control senser 321
In being arranged on this cavity 322 and it is connected with described controller.Between inner shell 323 to the shell 324 of described thermostat body respectively
It is provided with alundum tube 325, nickel chromium triangle heater strip 326 and aluminium oxide heat-preservation cotton 327.
Described pressure regulation unit 35 includes digital pressure gauge standard 351, air inlet pipe 352, exhaustor 353, intake valve 354 and
Air bleeding valve 355.Described digital pressure gauge standard 351 one end is connected with the compression fittings (not shown) on pressure tank cover 33
And measure the pressure in pressurized tank 31, the other end is connected with described controller signals, and described digital pressure gauge standard 351 is direct
Measure the pressure size in pressurized tank 31, and pressure signal is sent in controller.Described air inlet pipe 352 and exhaustor 353
Communicating through pressure tank cover 33 with described pressurized tank 31, described intake valve 354 is arranged in air inlet pipe 352, described air bleeding valve
355 are arranged in exhaustor 353.
Described pressurized tank 31 is high pressure resistant, high temperature resistant and that heat-conductive characteristic is good tank body.Matchingly, described pressure tank cover 33
For lid high pressure resistant, high temperature resistant, that heat-conductive characteristic is good and sealing is good.For guarantee Acquisition Instrument test pressurized tank 31 in pressure
Time accuracy, described pressure tank cover 33 is tightly connected with described pressurized tank 31.
In the present embodiment, in wireless pressure data collecting instrument 36 to be measured is arranged on pressurized tank 31 and measure in real time and record pressure
Pressure size in tank 31.Described wireless pressure data collecting instrument 36 can the size of pressure in real time record pressurized tank 31, treat school
After standard completes, can directly obtain the pressurized tank force value of record in wireless pressure data collecting instrument 36.Described wireless pressure data
Acquisition Instrument 36 also can be connected with described controller, in real time by measurement to pressure signal be sent in described controller.The present embodiment
In, described wireless pressure data collecting instrument 36 is connected with described controller signals.
In the present invention, described controller can also be communicated with host computer by man-machine interface, obtains Acquisition Instrument on host computer
36 data gathered.
Referring to Fig. 6, it is the flow chart of embodiment 2 wireless pressure data collecting instrument calibration using method.
Present invention also offers a kind of wireless pressure data collecting instrument calibration steps, concrete, comprise the steps:
Step 1: carry out pressure indicating value calibration；Wireless pressure data collecting instrument 36 to be measured is positioned in pressurized tank 31, will pressure
Power cover 33 is tightened and is made pressurized tank 31 seal.Set the temperature of thermostat 32 by controller, make the temperature in pressurized tank 31
It is maintained on certain value.Open intake valve 354 to pressurized tank 31 ventilation pressurization, and pointwise improves the big of pressure in pressurized tank 31
Little, obtain the digital pressure gauge standard 351 indicating value at each pressure spot, obtain the Acquisition Instrument 36 positive and negative stroke at each pressure spot
Indicating value, and calculate the error of indication and the hysterisis error of Acquisition Instrument 36.
Concrete, to certain pressure calibration point measurement, first passes through controller and sets the temperature of thermostat 32, make pressurized tank 31
Interior temperature is maintained on certain value.Then open intake valve 354, external air source is ventilated to pressurized tank 31 by air inlet pipe 352
Pressurization, in pressure process, the pressure in pressurized tank 31 constantly measured by digital pressure gauge standard 351, and is passed by the pressure recorded
Delivering to controller and host computer shows, the most constantly regulation intake valve 354 and air bleeding valve 355, make digital pressure gauge standard
When the indicating value of 351 is near pressure calibration point, close intake valve 354 and air bleeding valve 355.After pressure stabilisation, record numeral pressure
The indicating value of power meter standard 351, and obtain the moment value recording this indicating value.In the present invention, digital pressure gauge standard 351 is made
For the actual value of pressure in standard instruction pressurized tank 31.Pressure in wireless pressure data collecting instrument 36 real time record pressurized tank 31
Power indicating value is also sent in described controller.After having calibrated, read and record standard digital pressure in controller or host computer
The indicating value of the wireless pressure data collecting instrument 36 that meter standard 351 moment is corresponding.For ensureing the reliability of data, to each school
Quasi-pressure calibration point, need to obtain the indicating value of the positive and negative stroke of Acquisition Instrument 36, and calculate the error of indication and the hysterisis error of this point.
The computing formula of the error of indication is as follows:
Δ p=pR-pS (1)
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa；pRFor the Acquisition Instrument positive and negative stroke of each calibration point
Indicating value, its unit is kPa or MPa；pSFor digital pressure gauge standard in the indicating value of each calibration point, its unit be kPa or
MPa。
Hysterisis error may utilize the data of the error of indication and calculates, and takes difference absolute of the positive and negative stroke indicating value of same calibration point
It is worth the hysterisis error as Acquisition Instrument.
Step 2: carry out temperature characterisitic calibration；In keeping pressurized tank 31, pressure is on certain value, by controller regulation thermostat
The temperature of 32, changes the temperature in pressurized tank 31, obtains the positive and negative stroke indicating value of Acquisition Instrument 36 at different temperatures, and count
Calculate the error of indication and hysterisis error.
Concrete, open intake valve 354, external air source is pressurizeed to pressurized tank 31 by air inlet pipe 352, is marked by observation
Digital pressure gauge, in controlling pressurized tank 31, actual pressure is maintained on certain value, and the indicating value that now digital pressure gauge shows is pressure
Power calibration point indicating value.Set the temperature of thermostat 32 by controller, make pressurized tank 31 be maintained in a certain steady temperature.Treat
After pressure stability, pressurized tank 31 internal and external temperature balance, read pressurized tank 31 internal temperature that temperature sensor 34 records, read
Digital pressure gauge standard 351 and the indicating value of Acquisition Instrument 36.Then the temperature of pointwise raising thermostat 32, in the process,
Regulation intake valve 354 and air bleeding valve 355, the numerical value making digital pressure gauge standard 351 show is maintained at base measuring pressure calibration point
Near indicating value.After pressure stability, pressurized tank internal and external temperature balance, read the temperature of the pressurized tank 31 that temperature sensor 34 records
Degree；Read the indicating value of this digital pressure gauge standard 351, and obtain the moment value recording this indicating value；To be calibrated complete after, read
Take the indicating value of the positive and negative stroke of the wireless pressure data collecting instrument 36 corresponding with recording digital pressure gauge standard 351 moment；
And calculate the error of indication and the hysterisis error of Acquisition Instrument 36.The error of indication computing formula of Acquisition Instrument 36 and formula (1) calculate one
Cause, be not added with here repeating.Hysterisis error may utilize the data of the error of indication and calculates, and takes the positive and negative stroke of same calibration point
The absolute value of the difference of indicating value is as the hysterisis error of Acquisition Instrument 36.
Further, for the scientific feasibility of wireless pressure data acquisition calibrating installation of the present invention is described, the present invention passes through meter
The uncertainty calculating this calibrating installation is evaluated.Step 3: measure and calculate wireless pressure data collecting instrument calibrating installation not
Degree of certainty.
The uncertainty of wireless pressure data collecting instrument 36 calibrating installation is divided into A class and B class uncertainty, and uncertainty is originated
The B class uncertainty that the A class uncertainty introduced including measurement reproducibility and digital pressure gauge standard introduce.
(0～the 500) kPa with nominal range as absolute pressure below, accuracy is the wireless pressure data collecting instrument of 0.4 grade
As a example by 3613, with 0.02 grade of digital pressure gauge 200kPa pressure calibration at 80 DEG C of an absolute pressure (0～700) kPa
Point carries out uncertainty evaluation.
1) sensitivity coefficient of A class uncertainty and B class uncertainty calculates
Local derviation is asked to draw every sensitivity coefficient according to formula (1):
2) the A class uncertainty that measurement reproducibility introduces
The main source of A class uncertainty is: the pressure oscillation that temperature causes, digital pressure gauge standard short-term instability is equal
The the most repeated of Acquisition Instrument measurement result can be caused.To by school Acquisition Instrument 36 at 80 DEG C, the measurement point of 200kPa is carried out repeatedly
Measure, measured value: 200.7kPa, 200.8kPa, 200.7kPa, 200.6kPa, 200.9kPa, 200.7kPa, 200.8kPa,
200.7kPa, 200.9kPa, 200.7kPa.Single experiment standard deviation is calculated by formula (3)
Then standard uncertainty is
u(PR)=0.10kPa (4)
3) uncertainty that digital pressure gauge standard introduces
The uncertainty introduced by digital pressure gauge standard, belongs to B class, and the digital pressure gauge standard class of accuracy of selection is
0.02 grade, obedience is uniformly distributed, and Coverage factor isThe uncertainty introduced:
4) synthesis of standard uncertainty
Owing to partial uncertainty is independent uncorrelated, then Composite Seismogram is
5) expanded uncertainty
Taking confidence probability is 95%, k=2, then expanded uncertainty is
U95=0.26kPa (7)
Inspection Acquisition Instrument 36 be ± 2kPa in the limits of error of 200kPa, and calibration uncertainty is less than tested Acquisition Instrument 36
Big allowable error 1/3, meets alignment requirements.
Wireless pressure data collecting instrument class of accuracy in the market is 0.4 grade, and uncertainty evaluation meets transmission of quantity value and wants
Ask.The wireless pressure data collecting instrument that have chosen external 2 producers is tested, and result of the test is consistent with factory testing result,
Show that calibration steps science is feasible, meet the demand of wireless pressure monitor transmission of quantity value.
Wireless pressure data collecting instrument to be measured is arranged in the pressurized tank of sealing by the present invention, by intake valve and aerofluxus pressure regulating valve
Pressure in tank, measures the actual pressure in pressurized tank by digital pressure gauge standard；Control thermostat by controller, enter
And regulate the temperature level in pressurized tank, simulate the practical service environment of wireless pressure data collecting instrument；Respectively Acquisition Instrument is existed
Different pressures and different temperatures are calibrated, it is thus achieved that Acquisition Instrument, in the error of indication of each calibration point and hysterisis error, solves nothing
Line pressure data Acquisition Instrument magnitude tracing problem.
Embodiment 3
It is the structure of the embodiment of the present invention 3 wireless pressure data collecting instrument calibrating installation 40 please refer to Fig. 7 and Fig. 8, Fig. 7
Schematic diagram；Fig. 8 is the System Working Principle figure of the embodiment of the present invention 3 wireless pressure data collecting instrument calibrating installation 40.This is wireless
Pressure data Acquisition Instrument calibrating installation 40 includes: pressurized tank 41, pressure tank cover 42, pressure regulation unit 43 and controller 44.Institute
Stating pressure tank cover 42 to be arranged on described pressurized tank 41, described pressure regulation unit 43 is communicated with described pressurized tank 41 by conduit,
Described pressure regulation unit 43 is connected with described controller 44, is set the pressure indicating value of pressure regulation unit 43 by controller 44.
Referring to Fig. 9, it is the structural representation of pressure regulation unit shown in Fig. 7 43.Described pressure regulation unit 43 includes pressure buffer
Tank 431, airway 432, intake valve 433, air pump 434, air outlet valve 435, pressure transducer 436 and pressure transmitter 437.
Described pressure surge tank 431 one end is connected with described air pump 434 by airway 432 and intake valve 433, and the other end is by leading
Trachea 432 and air outlet valve 435 are connected with described pressurized tank 41.Described pressure transducer 436 is arranged on described air outlet valve 435 He
Communicating between described pressurized tank 42 and with described pressurized tank 41, described pressure transducer 436 is connected with described controller 44, and
Pressure feedback in the pressurized tank 41 that will measure is in described controller 44.The pressure that described pressure transducer 436 is measured
The size of value is by signal of telecommunication transmission to described controller 44, and described controller 44 converts the electrical signal to corresponding force value,
From pressure transducer 436 record force value size to controller be converted into force value be i.e. monolithically fabricated one high-precision numeral pressure
Power meter, the force value that sensor 436 finally transmits is i.e. the indicating value that controller 44 sets, and is also the standard indicating value in the present invention,
Its class of accuracy should meet the requirement that checked object carries out transmission of quantity value.Described air pump 434 is connected with external air source, described
Intake valve 433 and air outlet valve 434 are connected with described controller.Described pressure transmitter 437 and described pressure surge tank 433 phase
Logical, described pressure transmitter 437 is connected with described controller 44, and by the pressure feedback of the pressure surge tank 431 of measurement to institute
State in controller 44.
Setting the force value in pressurized tank 41 by controller 44, each force value set in pressurized tank 41 is at pressure surge tank
Having corresponding force value in 431, if the pressure of pressurized tank 41 that sets is as 200kPa, then controller 44 will delay to pressure
It is pressurized to 300kPa in rushing tank 431.After pressure in controller 44 sets pressurized tank 41, controller 44 will cut out
Air outlet valve 435, opens intake valve 433, and air pump 434 pressurizes in pressure surge tank 431, and pressure transmitter 437 is constantly measured
The pressure of pressure surge tank 431 also feeds back in controller 44.When pressure transmitter 437 feeds back to the force value of controller 44
When reaching 300kPa, controller 44 will cut out intake valve 433, opens air outlet valve 435, and pressure surge tank 431 will be to pressure
Tank 41 pressurizes, and when the pressure that pressure transducer 436 feeds back to controller 44 reaches setting value 200kPa, controller 44 will
Close air outlet valve 435.First pressurize at surge tank 431, then pressurizeed to pressurized tank 41 by surge tank 431, can preferably control
The pressure size of pressurized tank 41, it is ensured that the force value of pressurized tank 41 is in set point, and then realizes automatic pressure regulation tank 41
The function of pressure.
For guarantee Acquisition Instrument test pressurized tank 41 in pressure time accuracy, described pressure tank cover 42 seals with described pressurized tank 41
Connect.
In the present embodiment, wireless pressure data collecting instrument 27 to be measured is arranged in pressurized tank 41, and these wireless pressure data
Acquisition Instrument 27 is connected with described controller 44.Signal for making Acquisition Instrument 27 gather can be without hindrance every being transferred to controller 44
In, described pressurized tank 41 is the non-airtight tank body every wireless signal.Described pressurized tank 41 is also high pressure resistant, high temperature resistant and hot biography
Lead the tank body that performance is good.Matchingly, described pressure tank cover 42 be high pressure resistant, high temperature resistant, heat-conductive characteristic is good and sealing is good
Good lid.
In the present invention, described controller 44 can also be communicated with host computer by man-machine interface, remotely controls on host computer
Pressure regulation unit 43, and obtain the data that Acquisition Instrument 45 gathers.
When carrying out the calibration of pressure indicating value；Wireless pressure data collecting instrument 45 to be measured is positioned in pressurized tank 41, by pressure tank cover
42 tighten and make pressurized tank 41 seal.In wireless pressure data collecting instrument 45 pressure measurement range, by controller 41 pointwise
Setting the force value of pressurized tank 41, the pressure indicating value of this setting is i.e. as the normal size of pressure in pressurized tank 41.To pressurized tank
41 ventilation pressurizations, obtain the wireless pressure data collecting instrument 45 positive and negative stroke indicating value at each pressure spot；And calculate wireless pressure
The error of indication of data collecting instrument 45 and hysterisis error, and then realize in wireless pressure data collecting instrument 45 pressure measurement range
The calibration of each point.
Concrete, to certain pressure calibration point measurement, sets the indicating value such as 200kPa of pressure surge tank 431 by controller 44,
Then controller 44 will cut out air outlet valve 435, opens intake valve 433, and air pump 434 pressurizes in pressure surge tank 431,
Pressure transmitter 437 is constantly measured the pressure of pressure surge tank 431 and feeds back in controller 44.When pressure transmitter 437 is anti-
Being fed to the force value of controller 44 when reaching 300kPa, controller 44 will cut out intake valve 433, open air outlet valve 435,
Pressure surge tank 431 will pressurize to pressurized tank 41, reach setting value when pressure transducer 436 feeds back to the pressure of controller 44
During 200kPa, controller 44 will cut out air outlet valve 435, and now the reference pressure value in pressurized tank 41 is 200kPa.At this moment,
Have only to read on controller 44 panel the pressure indicating value that wireless pressure data collecting instrument 27 feeds back to.For ensureing data
Reliability, to each base measuring pressure calibration point, the indicating value of the positive and negative stroke of Acquisition Instrument need to be obtained, and calculate the indicating value of this point by mistake
Difference and hysterisis error.
The computing formula of the error of indication is as follows:
Δ p=pR-pS
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa；pRFor Acquisition Instrument at the positive and negative row of each calibration point
Journey indicating value, its unit is kPa or MPa；pSThe pressure indicating value of each calibration point set for controller, its unit be kPa or
MPa。
Hysterisis error may utilize the data of the error of indication and calculates, and takes difference absolute of the positive and negative stroke indicating value of same calibration point
It is worth the hysterisis error as wireless pressure data collecting instrument.
Wireless pressure data collecting instrument to be measured is arranged in the pressurized tank of sealing by the present invention, it is only necessary on controller panel or host computer
Operate, pressure pressure inside the tank can be controlled any point in the range of measuring, simple to operation.Further, pass through
Controller simulates the practical service environment of wireless pressure data collecting instrument, calibrates Acquisition Instrument at various pressures, it is thus achieved that
Acquisition Instrument, in the error of indication of each calibration point and hysterisis error, solves wireless pressure data collecting instrument magnitude tracing problem.
Embodiment 4
It is the embodiment of the present invention 4 wireless pressure data collecting instrument calibrating installation 50 please refer to Figure 10 and Figure 11, Figure 10
Structural representation；Figure 11 is the System Working Principle figure of the embodiment of the present invention 4 wireless pressure data collecting instrument calibrating installation 50.
This wireless pressure data collecting instrument calibrating installation 50 includes: pressurized tank 51, pressure tank cover 52, pressure regulation unit 53, controller 54,
Temperature sensor 55 and thermostat 56.Described pressure tank cover 52 is arranged on pressurized tank 51, and described pressure regulation unit 53 is by leading
Pipe communicates with described pressurized tank 51, and described controller 54 is connected with described pressure regulation unit 53；Described temperature sensor 55 is arranged
It is connected in described pressurized tank 51 and with described controller 54；Described pressurized tank 51 is arranged in described thermostat 56, described
Thermostat 56 is connected with described controller 54.In the present embodiment, wireless pressure data collecting instrument calibrating installation is to pass through controller
Control pressure and temperature in pressurized tank, it is achieved automatic pressure control pressure inside the tank and the function of temperature.
Pressure regulation unit described in the present embodiment is identical with the structure of embodiment 3, concrete, and described pressure regulation unit includes pressure buffer
Tank, airway, intake valve, air pump, air outlet valve, pressure transducer and pressure transmitter.Described pressure surge tank one end is passed through
Airway and intake valve are connected with described air pump, and the other end is connected with described pressurized tank by airway and air outlet valve.Described pressure
Sensor is arranged between described air outlet valve and described pressurized tank and communicates with described pressurized tank, described pressure transducer and described control
Device processed connects, and the pressure feedback in the pressurized tank that will measure is in described controller.The pressure that described pressure transducer is measured
The size of force value is by signal of telecommunication transmission to described controller, and described controller converts the electrical signal to corresponding force value, from pressure
Force transducer records force value size and is converted into force value to controller and has i.e. been monolithically fabricated a high-precision digital pressure gauge, passes
The force value that sensor finally transmits is i.e. the indicating value that controller sets, and is also the standard indicating value in the present invention, and its class of accuracy should
Meet the requirement that checked object is carried out transmission of quantity value.Described air pump is connected with external air source, described intake valve and air outlet valve and institute
State controller to connect.Described pressure transmitter communicates with described pressure surge tank, and described pressure transmitter is connected with described controller,
And by the pressure feedback of the pressure surge tank of measurement to described controller.
For guarantee Acquisition Instrument test pressurized tank 51 in pressure time accuracy, described pressure tank cover 52 seals with described pressurized tank 51
Connect.
In the present embodiment, wireless pressure data collecting instrument 57 to be measured is arranged in pressurized tank 51, and these wireless pressure data
Acquisition Instrument 57 is connected with described controller 54.Signal for making Acquisition Instrument 57 gather can be without hindrance every being transferred to controller 54
In, described pressurized tank 51 is the non-airtight tank body every wireless signal.Described pressurized tank 51 is also high pressure resistant, high temperature resistant and hot biography
Lead the tank body that performance is good.Matchingly, described pressure tank cover 52 be high pressure resistant, high temperature resistant, heat-conductive characteristic is good and sealing is good
Good lid.
In the present invention, described controller 54 can also be communicated with host computer by man-machine interface, remotely controls on host computer
Pressure regulation unit 53, and obtain the data that Acquisition Instrument 57 gathers.
The use step of the temperature automatically controlled wireless pressure data collecting instrument calibrating installation with control pressure system of band of the present invention is as follows:
Step 1: carry out pressure indicating value calibration；Wireless pressure data instrument 57 to be measured is positioned in pressurized tank 51, by pressurized tank
Lid 54 is tightened and is made pressurized tank 51 seal.By controller 51 regulation thermostat 56, in making pressurized tank 51, temperature keeps constant.
In wireless pressure data collecting instrument 57 pressure measurement range, set the force value of pressurized tank 51 by controller 51 pointwise, should
The pressure indicating value set is i.e. as the normal size of pressure in pressurized tank 51.To pressurized tank 51 ventilation pressurization, obtain wireless pressure
Data collecting instrument 57 is in the positive and negative stroke indicating value of each pressure spot；And calculate wireless pressure data collecting instrument 57 the error of indication and
Hysterisis error, and then realize the calibration of each point in wireless pressure data collecting instrument 57 pressure measurement range.
Concrete, to certain pressure calibration point measurement, sets the indicating value such as 200kPa of pressure surge tank by controller 54,
Then controller 54 will cut out air outlet valve, opens intake valve, and air pump pressurizes in pressure surge tank, and pressure transmitter 537 is not
The disconnected pressure measuring pressure surge tank also feeds back in controller 54.When pressure transmitter 537 feeds back to the pressure of controller 54
When value reaches 300kPa, controller 54 will cut out intake valve, opens air outlet valve, and pressure surge tank will pressurize to pressurized tank 51,
When the pressure that pressure transducer feeds back to controller 54 reaches setting value 200kPa, controller 54 will cut out air outlet valve, now
Reference pressure value in pressurized tank 51 is 200kPa.At this moment, it is only necessary on controller 54 panel, read wireless pressure data acquisition
The pressure indicating value that collection instrument 57 feeds back to.For ensureing the reliability of data, to each base measuring pressure calibration point, collection need to be obtained
The indicating value of the positive and negative stroke of instrument, and calculate the error of indication and the hysterisis error of this point.
The computing formula of the error of indication is as follows:
Δ p=pR-pS (8)
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa；pRFor Acquisition Instrument at the positive and negative row of each calibration point
Journey indicating value, its unit is kPa or MPa；pSThe pressure indicating value of each calibration point set for controller, its unit be kPa or
MPa。
Hysterisis error may utilize the data of the error of indication and calculates, and takes difference absolute of the positive and negative stroke indicating value of same calibration point
It is worth the hysterisis error as wireless pressure data collecting instrument.
Step 2: carry out temperature characterisitic calibration；In keeping pressurized tank 51, pressure is on certain value, regulates perseverance by controller 54
The temperature of temperature device 56, changes the temperature in pressurized tank 51, obtains the positive and negative stroke indicating value of Acquisition Instrument at different temperatures, and
Calculate the error of indication and hysterisis error.
Concrete, the temperature of regulation thermostat 56 makes it keep constant temperature, is set the pressure of pressurized tank 51 by controller 54, should
The pressure indicating value set is i.e. as the normal size of pressure in pressurized tank 51.In treating pressurized tank 51, pressure reaches setting value, pressure
After tank 51 internal and external temperature balance, reading pressurized tank 51 internal temperature that temperature sensor 54 records, controller 54 reads wireless
The pressure indicating value of pressure data Acquisition Instrument 57.Make the pressure in pressurized tank 51 keep constant by controller 54 regulation, then by
The temperature of some raising thermostat 56, the temperature within pressurized tank 51 that temperature sensor 55 records, pointwise reading nothing are read in pointwise
The indicating value of the positive and negative stroke of line pressure data Acquisition Instrument 57, and calculate the error of indication and the hysterisis error of Acquisition Instrument.Acquisition Instrument
Error of indication computing formula calculates consistent with formula (8), is not added with here repeating.Hysterisis error may utilize the data of the error of indication and enters
Row calculates, and takes the absolute value of difference of the positive and negative stroke indicating value of same calibration point as the hysterisis error of Acquisition Instrument.
Wireless pressure data collecting instrument to be measured is arranged in the pressurized tank of sealing by the present invention, it is only necessary at controller panel or host computer
On operate, pressure pressure inside the tank and temperature can be controlled measure in the range of any point, simple to operation.Further
Ground, by the temperature in thermostat regulation pressurized tank, simulates the practical service environment of wireless pressure data collecting instrument, the most right
Acquisition Instrument is calibrated at different pressures and different temperatures, it is thus achieved that Acquisition Instrument in the error of indication of each calibration point and hysterisis error,
Solve wireless pressure data collecting instrument magnitude tracing problem.
The invention is not limited in above-mentioned embodiment, if to the various changes of the present invention or deformation without departing from the spirit of the present invention
And scope, if within the scope of these are changed and deform claim and the equivalent technologies belonging to the present invention, then the present invention is also intended to
Comprise these to change and deformation.
Embodiment 5
Present invention also offers a kind of wireless pressure data collecting instrument calibration steps, in the present embodiment, embodiment 2 or real can be used
The device executing example 4 completes wireless pressure data collecting instrument calibration steps.The wireless pressure data collecting instrument calibration steps bag of the present invention
Include following steps:
Step 1: carry out pressure indicating value calibration；Wireless pressure data collecting instrument to be measured is positioned in pressurized tank, by pressure tank cover
Tighten and make pressurized tank seal；Set the temperature of thermostat by controller, make the temperature in pressurized tank be maintained on certain value；To
Pressurized tank ventilation pressurization, and by the pressure in regulation unit regulation pressurized tank, make the size of pressure pressure inside the tank be able to pointwise and carry
High；Obtain digital pressure gauge standard or the pressure transducer indicating value at each pressure spot, obtain Acquisition Instrument each pressure spot just,
Revesal indicating value, and calculate the error of indication and the hysterisis error of Acquisition Instrument.
In the present embodiment, manually pressure pressure inside the tank is adjusted by pressure regulation unit.This concrete regulation unit includes numeral pressure
Power meter standard, air inlet pipe, exhaustor, intake valve and air bleeding valve.On described digital pressure gauge standard one end and pressure tank cover
The compression fittings (not shown) pressure that connects and measure in pressurized tank, the other end is connected with described controller signals, described
The pressure size in pressurized tank directly measured by digital pressure gauge standard, and is sent in controller by pressure signal.Described air inlet
Pipe and exhaustor communicate through pressure tank cover with described pressurized tank, and described intake valve is arranged in air inlet pipe, and described air bleeding valve is arranged
In exhaustor.
When certain pressure calibration point is carried out pressure regulation, first passing through controller and set the temperature of thermostat, in making pressurized tank, temperature keeps
On certain value.Then intake valve is opened, by external air source by air inlet pipe to pressurized tank ventilation pressurization, in pressure process, number
The pressure in pressurized tank constantly measured by word piezometer standard, and the pressure recorded is sent to controller and host computer shows, hands
Dynamic constantly regulation intake valve and air bleeding valve, when making the indicating value of digital pressure gauge standard near pressure calibration point, close air inlet
Valve and air bleeding valve.After pressure stabilisation, the indicating value of record digital pressure gauge standard, and obtain the moment value recording this indicating value.
In the present invention, digital pressure gauge standard is as the actual value of standard instruction pressure pressure inside the tank.Wireless pressure data collecting instrument
Pressure indicating value in real time record pressurized tank is also sent in described controller.After having calibrated, read in controller or host computer
Take the indicating value of the wireless pressure data collecting instrument corresponding with the record standard digital pressure gauge standard moment.For ensure data can
By property, to each base measuring pressure calibration point, the indicating value of the positive and negative stroke of Acquisition Instrument need to be obtained, and calculate this point the error of indication and
Hysterisis error.
The computing formula of the error of indication is as follows:
Δ p=pR-pS (9)
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa；pRFor the Acquisition Instrument positive and negative stroke of each calibration point
Indicating value, its unit is kPa or MPa；pSFor digital pressure gauge standard in the indicating value of each calibration point, its unit be kPa or
MPa。
Step 2: carry out temperature characterisitic calibration；Holding pressure pressure inside the tank is on certain value, by controller regulation thermostat
Temperature, changes the temperature in pressurized tank, obtains the positive and negative stroke indicating value of Acquisition Instrument at different temperatures, and calculate the error of indication
And hysterisis error.
Carry out temperature characterisitic calibration；Keep pressure pressure inside the tank on certain value, by the temperature of controller regulation thermostat, change
Temperature in pressure changeable tank, obtains the positive and negative stroke indicating value of Acquisition Instrument at different temperatures, and calculates the error of indication and backhaul mistake
Difference.
Concrete, the temperature of regulation thermostat makes it keep constant temperature, is set the pressure of pressurized tank, the pressure of this setting by controller
Power indicating value is i.e. as the normal size of pressure pressure inside the tank.Treat that pressure pressure inside the tank reaches setting value, pressurized tank internal and external temperature balance
After, reading the pressurized tank internal temperature that temperature sensor records, controller reads the pressure indicating value of wireless pressure data collecting instrument.
Making the pressure in pressurized tank keep constant by controller regulation, then pointwise improves the temperature of thermostat, and pointwise is read temperature and passed
The temperature within pressurized tank that sensor records, pointwise is read the indicating value of the positive and negative stroke of wireless pressure data collecting instrument, and is calculated
The error of indication of Acquisition Instrument and hysterisis error.The error of indication computing formula of Acquisition Instrument calculates consistent with formula (9), is not added with here
Repeat.Hysterisis error may utilize the data of the error of indication and calculates, and takes difference exhausted of the positive and negative stroke indicating value of same calibration point
To being worth the hysterisis error as Acquisition Instrument.
Wireless pressure data collecting instrument to be measured is arranged in the pressurized tank of sealing by the present invention, by intake valve and aerofluxus pressure regulating valve
Pressure in tank, measures the actual pressure in pressurized tank by digital pressure gauge standard；Control thermostat by controller, enter
And regulate the temperature level in pressurized tank, simulate the practical service environment of wireless pressure data collecting instrument；Respectively Acquisition Instrument is existed
Different pressures and different temperatures are calibrated, it is thus achieved that Acquisition Instrument, in the error of indication of each calibration point and hysterisis error, solves nothing
Line pressure data Acquisition Instrument magnitude tracing problem.
It addition, as the deformation of the present invention, can use the pressure regulation unit with automatic Regulation function that pressure pressure inside the tank is adjusted
Joint, concrete described pressure regulation unit include pressure surge tank, airway, intake valve, air pump, air outlet valve, pressure transducer and
Pressure transmitter.Described pressure surge tank one end is connected with described air pump by airway and intake valve, and the other end passes through airway
It is connected with described pressurized tank with air outlet valve.Described pressure transducer is arranged between described air outlet valve and described pressurized tank and with described
Pressurized tank communicates, and described pressure transducer is connected with described controller, and the pressure feedback in the pressurized tank that will measure is to described control
In device processed.The size of the force value that described pressure transducer is measured is by signal of telecommunication transmission extremely described controller, described control
Device converts the electrical signal to corresponding force value, and recording force value size from pressure transducer, to be converted into force value to controller the most whole
Body constitutes a high-precision digital pressure gauge, and the force value that sensor finally transmits is i.e. the indicating value that controller sets, and is also
Standard indicating value in the present invention, its class of accuracy should meet the requirement that checked object carries out transmission of quantity value.Described air pump is with outer
Portion's source of the gas connects, and described intake valve and air outlet valve are connected with described controller.Described pressure transmitter and described pressure surge tank phase
Logical, described pressure transmitter is connected with controller, and by the pressure feedback of the pressure surge tank of measurement to described controller.
The each force value set in setting the force value in pressurized tank, pressurized tank by controller has in pressure surge tank relatively
The force value answered, if the pressure of pressurized tank that sets is as 200kPa, then controller will be pressurized to 300kPa in pressure surge tank.
After pressure in controller sets pressurized tank, controller will cut out air outlet valve, opens intake valve, and air pump is to pressure buffer
Pressurization in tank, pressure transmitter is constantly measured the pressure of pressure surge tank and feeds back in controller.When pressure transmitter feeds back to
When the force value of controller reaches 300kPa, controller will cut out intake valve, opens air outlet valve, and pressure surge tank will be to pressure
Tank pressurizes, and when the pressure that pressure transducer feeds back to controller reaches setting value 200kPa, controller will cut out air outlet valve.First
Pressurize at surge tank, then pressurizeed to pressurized tank by surge tank, can preferably control the pressure size of pressurized tank, it is ensured that pressurized tank
Force value in set point, and then realize the function of automatic pressure regulation pressure tank.
By operating on controller panel or host computer, pressure pressure inside the tank can be controlled any point in the range of measuring,
Operate simpler, use convenient.
Claims (10)
1. a wireless pressure data collecting instrument calibrating installation, it is characterised in that: include pressurized tank, pressure tank cover and pressure regulation unit；
Described pressure tank cover is arranged on pressurized tank, and described pressure regulation unit is communicated with described pressurized tank by conduit and regulates pressurized tank
Interior pressure；Described pressure regulation unit includes digital pressure gauge standard or pressure transducer, described digital pressure gauge standard
Or pressure transducer detects the pressure in described pressurized tank, to indicate the standard actual pressure value in described pressurized tank.
Wireless pressure data collecting instrument calibrating installation the most according to claim 1, it is characterised in that: also include controller, perseverance
Temperature device and temperature sensor；Described pressurized tank is arranged in described thermostat, and described temperature sensor is arranged on described pressure
In tank, described temperature sensor and thermostat are connected with described controller respectively, and described controller is with described pressure regulation unit even
Connect.
Wireless pressure data collecting instrument calibrating installation the most according to claim 1 and 2, it is characterised in that: when described pressure regulation list
When unit includes digital pressure gauge standard, described pressure regulation unit also includes air inlet pipe, exhaustor, intake valve and air bleeding valve；
The pressure that described digital pressure gauge standard is connected with the compression fittings on pressure tank cover and measures in pressurized tank, described air inlet
Pipe and exhaustor communicate through pressure tank cover with described pressurized tank, and described intake valve is arranged in air inlet pipe, described air bleeding valve
It is arranged in exhaustor.
Wireless pressure data collecting instrument calibrating installation the most according to claim 2, it is characterised in that: when described pressure regulation unit bag
When including pressure transducer, described pressure regulation unit also include pressure surge tank, airway, intake valve, air pump, air outlet valve and
Pressure transmitter；Described pressure surge tank one end is connected with described air pump by airway and intake valve, and the other end is by leading
Trachea and air outlet valve are connected with described pressurized tank；Described pressure transducer is arranged between described air outlet valve and described pressurized tank
And communicate with described pressurized tank, and it is connected with described controller；Described intake valve and air outlet valve are connected with described controller,
Described pressure transmitter communicates with described pressure surge tank and measures the pressure size in pressure surge tank；Described pressure inverting
Device is connected with described controller.
5. according to the wireless pressure data collecting instrument calibrating installation described in claim 3 or 4, it is characterised in that: described pressurized tank is
The airtight tank body that high pressure resistant, high temperature resistant and heat-conductive characteristic is good.
Wireless pressure data collecting instrument calibrating installation the most according to claim 5, it is characterised in that: described pressure tank cover is resistance to
High pressure, the lid that high temperature resistant, heat-conductive characteristic good and sealing is good.
Wireless pressure data collecting instrument calibrating installation the most according to claim 6, it is characterised in that: described pressure tank cover and institute
State pressurized tank to be tightly connected.
8. a wireless pressure data collecting instrument calibration steps, it is characterised in that: comprise the steps:
Step 1: carry out pressure indicating value calibration；Wireless pressure data collecting instrument to be measured is positioned in pressurized tank, by pressure tank cover
Tighten and make pressurized tank seal；Set the temperature of thermostat by controller, make the temperature in pressurized tank be maintained on certain value；To
Pressurized tank ventilation pressurization, and the size of pointwise raising pressure pressure inside the tank, obtain digital pressure gauge standard or pressure transducer exist
The indicating value of each pressure spot, obtains the Acquisition Instrument positive and negative stroke indicating value at each pressure spot, and calculates the error of indication of Acquisition Instrument and return
Journey error；
Step 2: carry out temperature characterisitic calibration；Holding pressure pressure inside the tank is on certain value, by controller regulation thermostat
Temperature, changes the temperature in pressurized tank, obtains the positive and negative stroke indicating value of Acquisition Instrument at different temperatures, and calculate the error of indication
And hysterisis error.
Wireless pressure data collecting instrument calibration steps the most according to claim 8, it is characterised in that: digital pressure gauge standard
Or the step of pressure transducer measurement pressure indicating value is: after regulation pressure pressure inside the tank or regulation thermostat temperature, treat pressure
Stable, internal and external temperature balance, then record digital pressure gauge standard or the indicating value of pressure transducer, and obtain and record this and show
The moment value of value.
Wireless pressure data collecting instrument calibration steps the most according to claim 9, it is characterised in that: Acquisition Instrument is measured pressure and is shown
The step of value is: the pressure indicating value in Acquisition Instrument real-time real time record pressurized tank, to be calibrated complete after, read and record number
Word piezometer standard or the indicating value of pressure transducer moment corresponding wireless pressure data collecting instrument.
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| CN106556419A (en) * | 2015-09-25 | 2017-04-05 | 北京振兴计量测试研究所 | Low pressure test chamber calibrating installation |
| CN105466633B (en) * | 2015-11-18 | 2018-10-16 | 西安航天计量测试研究所 | A kind of low temperature lower pressure sensor calibrating installation |
| CN105547575A (en) * | 2016-01-25 | 2016-05-04 | 广东菲柯特电子科技有限公司 | Tire pressure instrument detection system |
| CN105737796B (en) * | 2016-04-25 | 2018-06-05 | 苏州市建设工程质量检测中心有限公司 | Hydraulic pressure leveling systems and its measuring method |
| CN106153251B (en) * | 2016-08-31 | 2019-07-23 | 青岛金渊焊割设备有限公司 | A kind of digital pressure gauge calibration verification technical method |
| CN107883991A (en) * | 2017-12-26 | 2018-04-06 | 华景科技无锡有限公司 | A kind of calibrating device for sensors |
| CN110006588A (en) * | 2019-03-29 | 2019-07-12 | 山东钢铁集团日照有限公司 | A kind of pressure transmitter calibrating implementation method obtained automatically based on data |
| CN110174341A (en) * | 2019-06-06 | 2019-08-27 | 交通运输部公路科学研究所 | A kind of metering method and device of concrete impervious instrument |
| CN112484916B (en) * | 2020-11-27 | 2022-04-19 | 北京航天计量测试技术研究所 | Temperature response characteristic calibration method for patch type pressure sensor |
| CN113447234A (en) * | 2021-04-27 | 2021-09-28 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Wind tunnel electronic pressure scanning valve traceability device and traceability method thereof |
| CN113252096A (en) * | 2021-04-30 | 2021-08-13 | 河南创仕航空科技有限公司 | Sensor initial calibration method |
| CN114061831B (en) * | 2022-01-12 | 2022-05-20 | 武汉飞恩微电子有限公司 | Performance testing device for pressure sensor production |
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| CN101762344A (en) * | 2008-12-24 | 2010-06-30 | 中国科学院半导体研究所 | High-temperature and high-pressure sealing device for small optical fiber sensor test |
| CN103808460B (en) * | 2014-03-26 | 2015-10-14 | 北京航空航天大学 | Pressure transducer static properties quick calibration method |
| CN204514537U (en) * | 2015-04-22 | 2015-07-29 | 湖南省计量检测研究院 | A kind of wireless pressure data collecting instrument calibrating installation |
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