CN104792458A - Wireless pressure data acquiring instrument calibrating device and method thereof - Google Patents
Wireless pressure data acquiring instrument calibrating device and method thereof Download PDFInfo
- Publication number
- CN104792458A CN104792458A CN201510192576.7A CN201510192576A CN104792458A CN 104792458 A CN104792458 A CN 104792458A CN 201510192576 A CN201510192576 A CN 201510192576A CN 104792458 A CN104792458 A CN 104792458A
- Authority
- CN
- China
- Prior art keywords
- pressure
- head tank
- tank
- data collecting
- wireless
- 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.)
- Granted
Links
Landscapes
- Measuring Fluid Pressure (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a wireless pressure data acquiring instrument calibrating device. The wireless pressure data acquiring instrument calibrating device comprises a pressure tank, a pressure tank cover and a pressure adjusting unit. The pressure tank cover is arranged on the pressure tank, and the pressure adjusting unit is communicated with the pressure tank via a guide tube and adjusts pressure in the pressure tank. A wireless pressure data acquiring instrument to be detected is arranged in the closed pressure tank, and the pressure adjusting unit can adjust pressure in the pressure tank, so that the wireless pressure data acquiring instrument can be calibrated in various pressure points, indicating value error and hysteresis error of the data acquiring instrument in the various calibrating points are obtained, and the problem of value traceability of the wireless pressure data acquiring instrument is solved.
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 method thereof.
Background technology
Along with the development of wireless sensor technology, wireless pressure data collecting instrument is widely used in measuring pressure in closed container.Refer to Fig. 1, it is the structural representation of existing wireless pressure data collecting instrument 10.Wireless pressure data collecting instrument 10 comprises pressure transducer 11, signal condition unit 12, AD sampling unit 13, microprocessor 14, RF module 15 and storer 16.Described pressure transducer 11 exports electric signal and amplifies through signal condition unit 12, by A/D convertor circuit 13 be converted to digital signal send into microprocessor 14 carry out data processing, be transmitted to receiving terminal by RF module 15 or by data stored in storer 16.Wireless pressure data collecting instrument first arranges mode of operation, acquisition interval, start and stop condition usually, then inserts pressure seal container, and equipment pressurizes, and reads wireless pressure data collecting instrument indicating value and acquisition time in real time.In order to ensure and improve measuring accuracy and the stability of wireless pressure data collecting instrument, periodic dosages calibration must be carried out to wireless pressure data collecting instrument.And wireless pressure data collecting instrument is different from normal pressures surveying instrument, it does not possess compression fittings, without the need to jointing during measurement; And the maximum temperature that wireless pressure data collecting instrument uses all has exceeded 100 DEG C usually, the sensor in it and metering circuit have all had uniform temperature coefficient.Based on the singularity of wireless pressure data collecting instrument, not yet there is the device that data acquisition instrument is calibrated in the market.
Summary of the invention
The invention reside in the shortcoming and deficiency that overcome prior art, a kind of that calibrate wireless pressure data collecting instrument, pressure-adjustable, temp. controllable calibrating installation and method thereof are provided.
The present invention is achieved by the following technical solutions: a kind of wireless pressure data collecting instrument calibrating installation, comprises head tank, pressure tank cover and pressure regulation unit; Described pressure tank cover is arranged on head tank, and described pressure regulation unit to be communicated with described head tank by conduit and regulates the pressure in head tank.
Wireless pressure data collecting instrument to be measured arranges in the head tank of sealing by the present invention, by the pressure in pressure regulation unit adjustment head tank, wireless pressure data collecting instrument is calibrated at each spot pressure, 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.
Further, controller, thermostat and temperature sensor is also comprised; Described head tank is arranged in described thermostat, and described temperature sensor is arranged in described head tank, and described temperature sensor and thermostat are connected with described controller respectively, and described controller is connected with described pressure regulation unit.
Further, described pressure regulation unit comprises: digital pressure gauge standard, draft tube, gas outlet, gas admittance valve and vent valve; Described digital pressure gauge standard is connected with the compression fittings on pressure tank cover and measures the pressure in head tank, described draft tube and gas outlet communicate with described head tank through pressure tank cover, described gas admittance valve is arranged in draft tube, and described vent valve is arranged in gas outlet.
Further, described pressure regulation unit comprises pressure surge tank, wireway, gas admittance valve, air pump, air outlet valve, pressure transducer and pressure unit; Described pressure surge tank one end is connected with described air pump with gas admittance valve by wireway, and the other end is connected with described head tank with air outlet valve by wireway; Described pressure transducer to be arranged between described air outlet valve and described head tank and to communicate with described head tank, and is connected with described controller; Described gas admittance valve is connected with described controller with air outlet valve, and described pressure unit communicates with described pressure surge tank and measures the pressure size in pressure surge tank; Described pressure unit is connected with described controller.
Further, described head tank is high pressure resistant, high temperature resistant and the good airtight tank body of heat-conductive characteristic.
Further, described pressure tank cover be high pressure resistant, high temperature resistant, heat-conductive characteristic is good and the lid that sealing is good.
Further, described pressure tank cover and described head tank are tightly connected.
Present invention also offers a kind of wireless pressure data collecting instrument calibration steps, comprise the steps:
Step 1: carry out the calibration of pressure indicating value; Wireless pressure data collecting instrument to be measured is positioned in head tank, pressure tank cover is tightened head tank is sealed; By the temperature of controller setting thermostat, the temperature in head tank is made to remain on certain value; To head tank ventilation pressurization, and pointwise improves the size of pressure in head tank, acquisition digital pressure gauge standard or pressure transducer, in the indicating value of each spot pressure, obtain the positive and negative stroke indicating value of Acquisition Instrument at each spot pressure, and calculate the error of indication and the hysterisis error of Acquisition Instrument;
Step 2: carry out temperature characterisitic calibration; Pressure in head tank is kept on certain value, by the temperature of controller regulation thermostat, to change the temperature in head tank, obtain 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 understand better and implement, describe the present invention in detail below in conjunction with accompanying drawing.
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 process flow diagram 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 the unit of pressure regulation 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.
Embodiment
Embodiment 1
Refer 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 wireless pressure data collecting instrument calibrating installation 20 comprises: head tank 21, pressure tank cover 22 and pressure regulation unit 23; Described pressure tank cover 22 is arranged on head tank 21, and described pressure regulation unit 23 to be communicated with described head tank 21 by conduit and regulates the pressure in head tank 21.
Described pressure regulation unit 23 comprises digital pressure gauge standard 231, draft tube 232, gas outlet 233, gas admittance valve 234 and vent valve 235.Described pressure tank cover 22 is arranged on head tank 21, and described digital pressure gauge standard 231 is connected with the compression fittings (not shown) on pressure tank cover 22 and measures the pressure in head tank.Described draft tube 232 and gas outlet 233 communicate with described head tank 21 through pressure tank cover 22, described gas admittance valve 234 is arranged in draft tube 232, described draft tube 232 is connected with nitrogen cylinder or Manual pressurization pump, and controls the size of air inlet by gas admittance valve 234; Described vent valve 235 is arranged in gas outlet 233.Manually regulate the size of pressure in described vent valve 235 and gas admittance valve 234 controlled pressure tank 21.
Concrete, described head tank 21 is high pressure resistant, high temperature resistant and the good airtight tank body of heat-conductive characteristic.Matchingly, described pressure tank cover 22 is high pressure resistant, high temperature resistant and the good and lid that sealing is good of heat-conductive characteristic.For guaranteeing the accuracy of pressure in Acquisition Instrument test pressure tank 21, described pressure tank cover 22 is tightly connected with described head tank 21.
At normal temperatures, when the calibration of pressure indicating value is carried out to wireless pressure data collecting instrument 24, wireless pressure data instrument 24 to be measured is positioned in head tank 21, pressure tank cover 22 is tightened head tank 21 is sealed.Open gas admittance valve 234, external air source to be ventilated pressurization to head tank 21 by draft tube 232, and pointwise improves the pressure in head tank 21; Record digital pressure gauge standard 231 is in the indicating value of each spot pressure; Obtain the positive and negative stroke indicating value of wireless pressure data collecting instrument 24 at each spot pressure; And calculate wireless pressure data collecting instrument 24 error of indication and hysterisis error, realize the calibration to each point in wireless pressure data collecting instrument 24 pressure measurement range.
Concrete, to the measurement of certain pressure calibration point, first open gas admittance valve 234, external air source to be ventilated pressurization to head tank 21 by draft tube 232, in pressure process, the indicating value of Observable digital pressure gauge standard 231 adjusts.When observation digital pressure gauge 231 is near this pressure calibration point, close gas admittance valve 232, the indicating value of record digital pressure gauge standard 231 after pressure stabilisation, and obtain the moment value recording this indicating value.In the present invention, digital pressure gauge standard 231 is as the pressure actual value of standard indicated pressure tank 21.Pressure indicating value in wireless pressure data collecting instrument 24 real time record head tank 21, after having measured, reads the indicating value of the wireless pressure data collecting instrument 234 corresponding with record digital pressure gauge standard 231 moment.For ensureing the reliability of data, to each base measuring pressure calibration point, the indicating value of the positive and negative stroke of Acquisition Instrument need be obtained, and calculating the error of indication and the hysterisis error of this point.
The computing formula of the error of indication is as follows:
Δp＝p
R-p
S
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa; p
rfor the positive and negative stroke indicating value of each calibration point of Acquisition Instrument, its unit is kPa or MPa; p
sfor digital pressure gauge standard is in the indicating value of each calibration point, its unit is kPa or MPa.
Hysterisis error can utilize the data of the error of indication to calculate, and gets the hysterisis error of absolute value as wireless pressure data collecting instrument of the difference of the positive and negative stroke indicating value of same calibration point.
Wireless pressure data collecting instrument to be measured is arranged in the head tank of sealing by the present invention, the pressure in head tank is regulated by gas admittance valve and vent valve, the actual pressure in head tank is measured by digital pressure gauge standard, wireless pressure data collecting instrument is calibrated at each spot pressure, 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.
Embodiment 2
It is the structural representation 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.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.This wireless pressure data collecting instrument calibrating installation 30 comprises: comprise head tank 31, thermostat 32, pressure tank cover 33, temperature sensor 34, controller (not shown) and pressure regulation unit 35.Described head tank 31 is arranged in described thermostat 32, and described pressure tank cover 33 is arranged on head tank 31, and described temperature sensor 34 is arranged in described head tank 31, and described temperature sensor 34 is connected with described controller respectively with thermostat 32; Described pressure regulation unit 33 to be communicated with described head tank 31 by conduit and measures and regulate the pressure in head tank 31, and is sent in controller by the pressure signal in the head tank 31 of measurement.
Refer to Fig. 5, it is the structural representation of thermostat 32 shown in Fig. 3.Described thermostat 32 comprises thermostat body and temperature-control senser 321, and described thermostat body has one for the cavity 322 of placement force tank 31, and described temperature-control senser 321 to be arranged in this cavity 322 and to be connected with described controller.Alundum tube 325, nickel chromium triangle heater strip 326 and aluminium oxide heat-preservation cotton 327 is respectively arranged with between inner casing 323 to the shell 324 of described thermostat body.
Described pressure regulation unit 35 comprises digital pressure gauge standard 351, draft tube 352, gas outlet 353, gas admittance valve 354 and vent valve 355.Described digital pressure gauge standard 351 one end is connected with the compression fittings (not shown) on pressure tank cover 33 and measures the pressure in head tank 31, the other end is connected with described controller signals, the pressure size in head tank 31 directly measured by described digital pressure gauge standard 351, and is sent in controller by pressure signal.Described draft tube 352 and gas outlet 353 communicate with described head tank 31 through pressure tank cover 33, and described gas admittance valve 354 is arranged in draft tube 352, and described vent valve 355 is arranged in gas outlet 353.
Described head tank 31 is high pressure resistant, high temperature resistant and that heat-conductive characteristic is good tank body.Matchingly, described pressure tank cover 33 be high pressure resistant, high temperature resistant, heat-conductive characteristic is good and the lid that sealing is good.For guaranteeing accuracy during pressure in Acquisition Instrument test pressure tank 31, described pressure tank cover 33 is tightly connected with described head tank 31.
In the present embodiment, wireless pressure data collecting instrument 36 to be measured to be arranged in head tank 31 and to measure in real time and pressure size in record head tank 31.Described wireless pressure data collecting instrument 36 can the size of pressure in real time record head tank 31, to be calibrated complete after, can directly obtain the head tank force value that record in wireless pressure data collecting instrument 36.Described wireless pressure data collecting instrument 36 also can be connected with described controller, is sent in described controller by the pressure signal measured in real time.In the present embodiment, 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, and host computer obtains the data that Acquisition Instrument 36 gathers.
Refer to Fig. 6, it is the process flow diagram 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 the calibration of pressure indicating value; Wireless pressure data collecting instrument 36 to be measured is positioned in head tank 31, pressure tank cover 33 is tightened head tank 31 is sealed.By the temperature of controller setting thermostat 32, the temperature in head tank 31 is remained on certain value.Open gas admittance valve 354 to head tank 31 ventilation pressurization, and pointwise improves the size of pressure in head tank 31, obtain the indicating value of digital pressure gauge standard 351 at each spot pressure, obtain the positive and negative stroke indicating value of Acquisition Instrument 36 at each spot pressure, and calculate the error of indication and the hysterisis error of Acquisition Instrument 36.
Concrete, to the measurement of certain pressure calibration point, first by the temperature of controller setting thermostat 32, temperature in head tank 31 is remained on certain value.Then gas admittance valve 354 is opened, external air source to be ventilated pressurization to head tank 31 by draft tube 352, in pressure process, the pressure in head tank 31 constantly measured by digital pressure gauge standard 351, and the pressure recorded is sent to controller and host computer display, manually constantly regulate gas admittance valve 354 and vent valve 355, when making the indicating value of digital pressure gauge standard 351 near pressure calibration point, close gas admittance valve 354 and vent valve 355.After pressure stabilisation, the indicating value of record digital pressure gauge standard 351, and obtain the moment value recording this indicating value.In the present invention, digital pressure gauge standard 351 is as the actual value of pressure in standard indicated pressure tank 31.Pressure indicating value in wireless pressure data collecting instrument 36 real time record head tank 31 is also sent in described controller.After having calibrated, in controller or host computer, read the indicating value of the wireless pressure data collecting instrument 36 corresponding with record standard digital pressure gauge standard 351 moment.For ensureing the reliability of data, to each base measuring pressure calibration point, the indicating value of the positive and negative stroke of Acquisition Instrument 36 need be obtained, and calculating the error of indication and the hysterisis error of this point.
The computing formula of the error of indication is as follows:
Δp＝p
R-p
S(1)
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa; p
rfor the positive and negative stroke indicating value of each calibration point of Acquisition Instrument, its unit is kPa or MPa; p
sfor digital pressure gauge standard is in the indicating value of each calibration point, its unit is kPa or MPa.
Hysterisis error can utilize the data of the error of indication to calculate, and gets the hysterisis error of absolute value as Acquisition Instrument of the difference of the positive and negative stroke indicating value of same calibration point.
Step 2: carry out temperature characterisitic calibration; Pressure in head tank 31 is kept on certain value, by the temperature of controller regulation thermostat 32, to change the temperature in head tank 31, obtain the positive and negative stroke indicating value of Acquisition Instrument 36 at different temperatures, and calculate the error of indication and hysterisis error.
Concrete, open gas admittance valve 354, external air source is pressurizeed to head tank 31 by draft tube 352, by observation mark digital pressure gauge, in controlled pressure tank 31, actual pressure remains on certain value, and the indicating value of now digital pressure gauge display is pressure calibration point indicating value.By the temperature of controller setting thermostat 32, head tank 31 is remained in a certain steady temperature.After pressure stability, head tank 31 internal and external temperature balance, head tank 31 internal temperature that reading temperature sensor 34 records, reads the indicating value of digital pressure gauge standard 351 and Acquisition Instrument 36.Then pointwise improves the temperature of thermostat 32, and in the process, regulate gas admittance valve 354 and vent valve 355, the numerical value that digital pressure gauge standard 351 is shown remains near base measuring pressure calibration point indicating value.After pressure stability, head tank internal and external temperature balance, the temperature of the head tank 31 that reading temperature sensor 34 records; 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 the indicating value with the positive and negative stroke recording digital pressure gauge standard 351 moment corresponding wireless pressure data collecting instrument 36; And calculate the error of indication and the hysterisis error of Acquisition Instrument 36.The error of indication computing formula of Acquisition Instrument 36 calculates consistent with formula (1), does not add here and repeats.Hysterisis error can utilize the data of the error of indication to calculate, and gets the hysterisis error of absolute value as Acquisition Instrument 36 of the difference of the positive and negative stroke indicating value of same calibration point.
Further, for the scientific feasibility of wireless pressure data acquisition calibrating installation of the present invention is described, the present invention is evaluated by the uncertainty of this calibrating installation of survey calculation.Step 3: measure and calculate the uncertainty of wireless pressure data collecting instrument calibrating installation.
The uncertainty of wireless pressure data collecting instrument 36 calibrating installation is divided into category-A and category-B uncertainty, and uncertainty source comprises the category-A uncertainty of measuring repeatability introducing and the category-B uncertainty of digital pressure gauge standard introducing.
Below with a nominal range for absolute pressure (0 ~ 500) kPa, accuracy is the wireless pressure data collecting instrument 3613 of 0.4 grade is example, carries out uncertainty evaluation with 0.02 stages of digital pressure gauge 200kPa pressure calibration point at 80 DEG C of absolute pressure (0 ~ 700) kPa.
1) sensitivity coefficient of category-A uncertainty and category-B uncertainty calculates
Local derviation is asked to draw every sensitivity coefficient according to formula (1):
2) the category-A uncertainty of measuring repeatability introducing
The main source of category-A uncertainty is: the pressure surge that temperature causes, and digital pressure gauge standard short-term instability all can cause the not repeated of Acquisition Instrument measurement result.To by school Acquisition Instrument 36 at 80 DEG C, the measurement point of 200kPa takes multiple measurements, 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(P
R)＝0.10kPa (4)
3) uncertainty of digital pressure gauge standard introducing
The uncertainty introduced by digital pressure gauge standard, belong to category-B, the digital pressure gauge standard class of accuracy selected is 0.02 grade, and obedience is uniformly distributed, and Coverage factor is
the uncertainty introduced:
4) synthesis of standard uncertainty
Because partial uncertainty is independent uncorrelated, then Composite Seismogram is
5) expanded uncertainty
Getting fiducial probability is 95%, k=2, then expanded uncertainty is
U
95＝0.26kPa (7)
Inspection Acquisition Instrument 36 is ± 2kPa in the limits of error of 200kPa, and calibration uncertainty is less than tested Acquisition Instrument 36 limits of error 1/3, meets alignment requirements.
Wireless pressure data collecting instrument class of accuracy is in the market 0.4 grade, and uncertainty evaluation meets transmission of quantity value requirement.The wireless pressure data collecting instrument that have chosen external 2 producers is tested, and test findings conforms to factory testing result, shows that calibration steps science is feasible, meets the demand of wireless pressure registering instrument transmission of quantity value.
Wireless pressure data collecting instrument to be measured arranges in the head tank of sealing by the present invention, is regulated the pressure in head tank, measure the actual pressure in head tank by digital pressure gauge standard by gas admittance valve and vent valve; Control thermostat by controller, and then regulate the temperature level in head tank, simulate the practical service environment of wireless pressure data collecting instrument; Respectively Acquisition Instrument is calibrated at different pressures and different temperatures, obtain Acquisition Instrument in the error of indication of each calibration point and hysterisis error, solve wireless pressure data collecting instrument magnitude tracing problem.
Embodiment 3
Please refer to the structural representation that Fig. 7 and Fig. 8, Fig. 7 are the embodiment of the present invention 3 wireless pressure data collecting instrument calibrating installations 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.This wireless pressure data collecting instrument calibrating installation 40 comprises: head tank 41, pressure tank cover 42, pressure regulation unit 43 and controller 44.Described pressure tank cover 42 is arranged on described head tank 41, and described pressure regulation unit 43 is communicated with described head tank 41 by conduit, and 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.
Refer to Fig. 9, it is the structural representation of the unit of pressure regulation shown in Fig. 7 43.Described pressure regulation unit 43 comprises pressure surge tank 431, wireway 432, gas admittance valve 433, air pump 434, air outlet valve 435, pressure transducer 436 and pressure unit 437.Described pressure surge tank 431 one end is connected with described air pump 434 with gas admittance valve 433 by wireway 432, and the other end is connected with described head tank 41 with air outlet valve 435 by wireway 432.Described pressure transducer 436 to be arranged between described air outlet valve 435 and described head tank 42 and to communicate with described head tank 41, and described pressure transducer 436 is connected with described controller 44, and by the pressure feedback in the head tank 41 measured in described controller 44.The size of the force value that described pressure transducer 436 is measured is by electric signal transmission extremely described controller 44, described controller 44 converts the electrical signal to corresponding force value, record force value size from pressure transducer 436 and convert force value to controller and entirety constitutes a high-precision digital pressure gauge, namely the force value that sensor 436 finally transmits is the indicating value that controller 44 sets, also be the standard indicating value in the present invention, its class of accuracy should meet requirement checked object being carried out to transmission of quantity value.Described air pump 434 is connected with external air source, and described gas admittance valve 433 is connected with described controller with air outlet valve 434.Described pressure unit 437 communicates with described pressure surge tank 433, and described pressure unit 437 is connected with described controller 44, and by the pressure feedback of the pressure surge tank 431 of measurement in described controller 44.
By the force value in controller 44 set pressure tank 41, in head tank 41, each force value of setting has corresponding force value in pressure surge tank 431, pressure as the head tank 41 of setting is 200kPa, then controller 44 will be pressurized to 300kPa in pressure surge tank 431.When after the pressure that controller 44 sets in head tank 41, controller 44 will cut out air outlet valve 435, open gas admittance valve 433, air pump 434 pressurizes in pressure surge tank 431, and pressure unit 437 is constantly measured the pressure of pressure surge tank 431 and fed back in controller 44.When the force value that pressure unit 437 feeds back to controller 44 reaches 300kPa, controller 44 will cut out gas admittance valve 433, open air outlet valve 435, pressure surge tank 431 will pressurize to head tank 41, when the pressure that pressure transducer 436 feeds back to controller 44 reaches setting value 200kPa, controller 44 will cut out air outlet valve 435.First pressurize at surge tank 431, then pressurizeed to head tank 41 by surge tank 431, can the pressure size of better controlled pressure tank 41, guarantee that the force value of head tank 41 is in setting range, and then realize the function of automatic pressure regulation tank 41 pressure.
For guaranteeing accuracy during pressure in Acquisition Instrument test pressure tank 41, described pressure tank cover 42 is tightly connected with described head tank 41.
In the present embodiment, wireless pressure data collecting instrument 27 to be measured is arranged in head tank 41, and this wireless pressure data collecting instrument 27 is connected with described controller 44.The signal gathered for making Acquisition Instrument 27 can be without hindrance every being transferred in controller 44, and described head tank 41 is the non-airtight tank body every wireless signal.Described head tank 41 is also high pressure resistant, high temperature resistant and that heat-conductive characteristic is good tank body.Matchingly, described pressure tank cover 42 be high pressure resistant, high temperature resistant, heat-conductive characteristic is good and the lid that sealing is good.
In the present invention, described controller 44 can also be communicated with host computer by man-machine interface, Long-distance Control pressure regulation unit 43 on host computer, and obtains the data of Acquisition Instrument 45 collection.
When carrying out the calibration of pressure indicating value; Wireless pressure data collecting instrument 45 to be measured is positioned in head tank 41, pressure tank cover 42 is tightened head tank 41 is sealed.In wireless pressure data collecting instrument 45 pressure measurement range, by the force value of controller 41 pointwise set pressure tank 41, the pressure indicating value of this setting is namely as the normal size of pressure in head tank 41.Ventilate to head tank 41 and pressurize, obtain the positive and negative stroke indicating value of wireless pressure data collecting instrument 45 at each spot pressure; And calculate the error of indication and the hysterisis error of wireless pressure data collecting instrument 45, and then realize the calibration to each point in wireless pressure data collecting instrument 45 pressure measurement range.
Concrete, to the measurement of certain pressure calibration point, by the indicating value of controller 44 set pressure surge tank 431 as 200kPa, then controller 44 will cut out air outlet valve 435, open gas admittance valve 433, air pump 434 pressurizes in pressure surge tank 431, and pressure unit 437 is constantly measured the pressure of pressure surge tank 431 and fed back in controller 44.When the force value that pressure unit 437 feeds back to controller 44 reaches 300kPa, controller 44 will cut out gas admittance valve 433, open air outlet valve 435, pressure surge tank 431 will pressurize to head tank 41, when the pressure that pressure transducer 436 feeds back to controller 44 reaches setting value 200kPa, controller 44 will cut out air outlet valve 435, and the reference pressure value now in head tank 41 is 200kPa.At this moment, a needs reads the pressure indicating value that wireless pressure data collecting instrument 27 feeds back on controller 44 panel.For ensureing the reliability of data, to each base measuring pressure calibration point, the indicating value of the positive and negative stroke of Acquisition Instrument need be obtained, and calculating the error of indication and the hysterisis error of this point.
The computing formula of the error of indication is as follows:
Δp＝p
R-p
S
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa; p
rfor Acquisition Instrument is in the positive and negative stroke indicating value of each calibration point, its unit is kPa or MPa; p
sfor the pressure indicating value of each calibration point of controller setting, its unit is kPa or MPa.
Hysterisis error can utilize the data of the error of indication to calculate, and gets the hysterisis error of absolute value as wireless pressure data collecting instrument of the difference of the positive and negative stroke indicating value of same calibration point.
Wireless pressure data collecting instrument to be measured arranges in the head tank of sealing by the present invention, only needs controller panel or the enterprising line operate of host computer, can by any point in measurement range of Stress control in head tank, simple to operation.Further, the practical service environment of wireless pressure data collecting instrument is simulated by controller, Acquisition Instrument is calibrated at various pressures, obtains Acquisition Instrument in the error of indication of each calibration point and hysterisis error, solve wireless pressure data collecting instrument magnitude tracing problem.
Embodiment 4
Please refer to the structural representation that Figure 10 and Figure 11, Figure 10 are the embodiment of the present invention 4 wireless pressure data collecting instrument calibrating installations 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.This wireless pressure data collecting instrument calibrating installation 50 comprises: head 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 head tank 51, and described pressure regulation unit 53 is communicated with described head tank 51 by conduit, and described controller 54 is connected with described pressure regulation unit 53; Described temperature sensor 55 to be arranged in described head tank 51 and to be connected with described controller 54; Described head tank 51 is arranged in described thermostat 56, and described thermostat 56 is connected with described controller 54.In the present embodiment, wireless pressure data collecting instrument calibrating installation carrys out pressure and temperature in controlled pressure tank by controller, realizes the function of pressure and temperature in automatic pressure control tank.
The unit of pressure regulation described in the present embodiment is identical with the structure of embodiment 3, concrete, and described pressure regulation unit comprises pressure surge tank, wireway, gas admittance valve, air pump, air outlet valve, pressure transducer and pressure unit.Described pressure surge tank one end is connected with described air pump with gas admittance valve by wireway, and the other end is connected with described head tank with air outlet valve by wireway.Described pressure transducer to be arranged between described air outlet valve and described head tank and to communicate with described head tank, and described pressure transducer is connected with described controller, and by the pressure feedback in the head tank measured in described controller.The size of the force value that described pressure transducer is measured is by electric signal transmission extremely described controller, described controller converts the electrical signal to corresponding force value, record force value size from pressure transducer and convert force value to controller and entirety constitutes a high-precision digital pressure gauge, namely the force value that sensor finally transmits is the indicating value of controller setting, also be the standard indicating value in the present invention, its class of accuracy should meet requirement checked object being carried out to transmission of quantity value.Described air pump is connected with external air source, and described gas admittance valve is connected with described controller with air outlet valve.Described pressure unit communicates with described pressure surge tank, and described pressure unit is connected with described controller, and by the pressure feedback of the pressure surge tank of measurement in described controller.
For guaranteeing accuracy during pressure in Acquisition Instrument test pressure tank 51, described pressure tank cover 52 is tightly connected with described head tank 51.
In the present embodiment, wireless pressure data collecting instrument 57 to be measured is arranged in head tank 51, and this wireless pressure data collecting instrument 57 is connected with described controller 54.The signal gathered for making Acquisition Instrument 57 can be without hindrance every being transferred in controller 54, and described head tank 51 is the non-airtight tank body every wireless signal.Described head tank 51 is also high pressure resistant, high temperature resistant and that heat-conductive characteristic is good tank body.Matchingly, described pressure tank cover 52 be high pressure resistant, high temperature resistant, heat-conductive characteristic is good and the lid that sealing is good.
In the present invention, described controller 54 can also be communicated with host computer by man-machine interface, Long-distance Control pressure regulation unit 53 on host computer, and obtains the data of Acquisition Instrument 57 collection.
Band of the present invention is temperature automatically controlled as follows with the use step of the wireless pressure data collecting instrument calibrating installation of control pressure system:
Step 1: carry out the calibration of pressure indicating value; Wireless pressure data instrument 57 to be measured is positioned in head tank 51, pressure tank cover 54 is tightened head tank 51 is sealed.By controller 51 regulation thermostat 56, make temperature remained constant in head tank 51.In wireless pressure data collecting instrument 57 pressure measurement range, by the force value of controller 51 pointwise set pressure tank 51, the pressure indicating value of this setting is namely as the normal size of pressure in head tank 51.Ventilate to head tank 51 and pressurize, obtain the positive and negative stroke indicating value of wireless pressure data collecting instrument 57 at each spot pressure; And calculate the error of indication and the hysterisis error of wireless pressure data collecting instrument 57, and then realize the calibration to each point in wireless pressure data collecting instrument 57 pressure measurement range.
Concrete, to the measurement of certain pressure calibration point, by the indicating value of controller 54 set pressure surge tank as 200kPa, then controller 54 will cut out air outlet valve, open gas admittance valve, air pump pressurizes in pressure surge tank, and pressure unit 537 is constantly measured the pressure of pressure surge tank and fed back in controller 54.When the force value that pressure unit 537 feeds back to controller 54 reaches 300kPa, controller 54 will cut out gas admittance valve, open air outlet valve, pressure surge tank will pressurize to head 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, and the reference pressure value now in head tank 51 is 200kPa.At this moment, a needs reads the pressure indicating value that wireless pressure data collecting instrument 57 feeds back on controller 54 panel.For ensureing the reliability of data, to each base measuring pressure calibration point, the indicating value of the positive and negative stroke of Acquisition Instrument need be obtained, and calculating the error of indication and the hysterisis error of this point.
The computing formula of the error of indication is as follows:
Δp＝p
R-p
S(8)
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa; p
rfor Acquisition Instrument is in the positive and negative stroke indicating value of each calibration point, its unit is kPa or MPa; p
sfor the pressure indicating value of each calibration point of controller setting, its unit is kPa or MPa.
Hysterisis error can utilize the data of the error of indication to calculate, and gets the hysterisis error of absolute value as wireless pressure data collecting instrument of the difference of the positive and negative stroke indicating value of same calibration point.
Step 2: carry out temperature characterisitic calibration; Pressure in head tank 51 is kept on certain value, by the temperature of controller 54 regulation thermostat 56, to change the temperature in head tank 51, obtain 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, and by the pressure of controller 54 set pressure tank 51, the pressure indicating value of this setting is namely as the normal size of pressure in head tank 51.Reach after setting value, head tank 51 internal and external temperature balance until pressure in head tank 51, head tank 51 internal temperature that reading temperature sensor 54 records, controller 54 reads the pressure indicating value of wireless pressure data collecting instrument 57.The maintain constant pressure made in head tank 51 is regulated by controller 54, then pointwise improves the temperature of thermostat 56, the temperature of head tank 51 inside that pointwise reading temperature sensor 55 records, the indicating value of the positive and negative stroke of wireless pressure data collecting instrument 57 is read in pointwise, and calculates the error of indication and the hysterisis error of Acquisition Instrument.The error of indication computing formula of Acquisition Instrument calculates consistent with formula (8), does not add here and repeats.Hysterisis error can utilize the data of the error of indication to calculate, and gets the hysterisis error of absolute value as Acquisition Instrument of the difference of the positive and negative stroke indicating value of same calibration point.
Wireless pressure data collecting instrument to be measured arranges in the head tank of sealing by the present invention, only needs at controller panel or the enterprising line operate of host computer, can by any point in measurement range of pressure and temperature control in head tank, simple to operation.Further, the temperature in head tank is regulated by thermostat, simulate the practical service environment of wireless pressure data collecting instrument, respectively Acquisition Instrument is calibrated at different pressures and different temperatures, obtain Acquisition Instrument in the error of indication of each calibration point and hysterisis error, solve wireless pressure data collecting instrument magnitude tracing problem.
The present invention is not limited to above-mentioned embodiment, if do not depart from the spirit and scope of the present invention to various change of the present invention or distortion, if these are changed and distortion belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these changes and distortion.
Embodiment 5
Present invention also offers a kind of wireless pressure data collecting instrument calibration steps, in the present embodiment, the device of embodiment 2 or embodiment 4 can be adopted to complete wireless pressure data collecting instrument calibration steps.Wireless pressure data collecting instrument calibration steps of the present invention comprises the steps:
Step 1: carry out the calibration of pressure indicating value; Wireless pressure data collecting instrument to be measured is positioned in head tank, pressure tank cover is tightened head tank is sealed; By the temperature of controller setting thermostat, the temperature in head tank is made to remain on certain value; To head tank ventilation pressurization, and regulate the pressure in head tank by regulon, make the size of pressure in head tank be able to pointwise and improve; Acquisition digital pressure gauge standard or pressure transducer, in the indicating value of each spot pressure, obtain the positive and negative stroke indicating value of Acquisition Instrument at each spot pressure, and calculate the error of indication and the hysterisis error of Acquisition Instrument.
In the present embodiment, manually pressure regulation unit regulates pressure in head tank.This concrete regulon comprises digital pressure gauge standard, draft tube, gas outlet, gas admittance valve and vent valve.Described digital pressure gauge standard one end is connected with the compression fittings (not shown) on pressure tank cover and measures the pressure in head tank, the other end is connected with described controller signals, the pressure size in head tank directly measured by described digital pressure gauge standard, and is sent in controller by pressure signal.Described draft tube and gas outlet communicate with described head tank through pressure tank cover, and described gas admittance valve is arranged in draft tube, and described vent valve is arranged in gas outlet.
When carrying out pressure regulation to certain pressure calibration point, first by the temperature of controller setting thermostat, temperature in head tank is remained on certain value.Then gas admittance valve is opened, external air source is pressurizeed to head tank ventilation by draft tube, in pressure process, the pressure in head tank constantly measured by digital pressure gauge standard, and the pressure recorded is sent to controller and host computer display, manually constantly regulate gas admittance valve and vent valve, when making the indicating value of digital pressure gauge standard near pressure calibration point, close gas admittance valve and vent 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 pressure in standard indicated pressure tank.Pressure indicating value in wireless pressure data collecting instrument real time record head tank is also sent in described controller.After having calibrated, in controller or host computer, read the indicating value of the wireless pressure data collecting instrument corresponding with the record standard digital pressure gauge standard moment.For ensureing the reliability of data, to each base measuring pressure calibration point, the indicating value of the positive and negative stroke of Acquisition Instrument need be obtained, and calculating the error of indication and the hysterisis error of this point.
The computing formula of the error of indication is as follows:
Δp＝p
R-p
S(9)
In formula, Δ p is the Acquisition Instrument error of indication, and its unit is kPa or MPa; p
rfor the positive and negative stroke indicating value of each calibration point of Acquisition Instrument, its unit is kPa or MPa; p
sfor digital pressure gauge standard is in the indicating value of each calibration point, its unit is kPa or MPa.
Step 2: carry out temperature characterisitic calibration; Pressure in head tank is kept on certain value, by the temperature of controller regulation thermostat, to change the temperature in head tank, obtain 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; Pressure in head tank is kept on certain value, by the temperature of controller regulation thermostat, to change the temperature in head tank, obtain 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 makes it keep constant temperature, and by the pressure of controller set pressure tank, the pressure indicating value of this setting is namely as the normal size of pressure in head tank.Reach after setting value, head tank internal and external temperature balance until pressure in head tank, the head tank internal temperature that reading temperature sensor records, controller reads the pressure indicating value of wireless pressure data collecting instrument.The maintain constant pressure made in head tank is regulated by controller, then pointwise improves the temperature of thermostat, the temperature of the head tank inside that pointwise reading temperature sensor records, the indicating value of the positive and negative stroke of wireless pressure data collecting instrument is read in pointwise, and calculates the error of indication and the hysterisis error of Acquisition Instrument.The error of indication computing formula of Acquisition Instrument calculates consistent with formula (9), does not add here and repeats.Hysterisis error can utilize the data of the error of indication to calculate, and gets the hysterisis error of absolute value as Acquisition Instrument of the difference of the positive and negative stroke indicating value of same calibration point.
Wireless pressure data collecting instrument to be measured arranges in the head tank of sealing by the present invention, is regulated the pressure in head tank, measure the actual pressure in head tank by digital pressure gauge standard by gas admittance valve and vent valve; Control thermostat by controller, and then regulate the temperature level in head tank, simulate the practical service environment of wireless pressure data collecting instrument; Respectively Acquisition Instrument is calibrated at different pressures and different temperatures, obtain Acquisition Instrument in the error of indication of each calibration point and hysterisis error, solve wireless pressure data collecting instrument magnitude tracing problem.
In addition, as distortion of the present invention, the pressure regulation unit with automatic Regulation function can be adopted to regulate pressure in head tank, and concrete described pressure regulation unit comprises pressure surge tank, wireway, gas admittance valve, air pump, air outlet valve, pressure transducer and pressure unit.Described pressure surge tank one end is connected with described air pump with gas admittance valve by wireway, and the other end is connected with described head tank with air outlet valve by wireway.Described pressure transducer to be arranged between described air outlet valve and described head tank and to communicate with described head tank, and described pressure transducer is connected with described controller, and by the pressure feedback in the head tank measured in described controller.The size of the force value that described pressure transducer is measured is by electric signal transmission extremely described controller, described controller converts the electrical signal to corresponding force value, record force value size from pressure transducer and convert force value to controller and entirety constitutes a high-precision digital pressure gauge, namely the force value that sensor finally transmits is the indicating value of controller setting, also be the standard indicating value in the present invention, its class of accuracy should meet requirement checked object being carried out to transmission of quantity value.Described air pump is connected with external air source, and described gas admittance valve is connected with described controller with air outlet valve.Described pressure unit communicates with described pressure surge tank, and described pressure unit is connected with controller, and by the pressure feedback of the pressure surge tank of measurement in described controller.
By the force value in controller set pressure tank, in head tank, each force value of setting has corresponding force value in pressure surge tank, and the pressure as the head tank of setting is 200kPa, then controller will be pressurized to 300kPa in pressure surge tank.Set the pressure in head tank when controller after, controller will cut out air outlet valve, opens gas admittance valve, and air pump pressurizes in pressure surge tank, and pressure unit is constantly measured the pressure of pressure surge tank and fed back in controller.When the force value that pressure unit feeds back to controller reaches 300kPa, controller will cut out gas admittance valve, opens air outlet valve, and pressure surge tank will pressurize to head tank, when the pressure that pressure transducer feeds back to controller reaches setting value 200kPa, controller will cut out air outlet valve.First in surge tank pressurization, then pressurizeed to head tank by surge tank, can the pressure size of better controlled pressure tank, guarantee that the force value of head tank is in setting range, and then realize the function of automatic pressure regulation pressure tank.
By at controller panel or the enterprising line operate of host computer, by any point in measurement range of Stress control in head tank, can operate more simple, use convenient.
Claims (10)
1. a wireless pressure data collecting instrument calibrating installation, is characterized in that: comprise head tank, pressure tank cover and pressure regulation unit; Described pressure tank cover is arranged on head tank, and described pressure regulation unit to be communicated with described head tank by conduit and regulates the pressure in head tank.
2. wireless pressure data collecting instrument calibrating installation according to claim 1, is characterized in that: also comprise controller, thermostat and temperature sensor; Described head tank is arranged in described thermostat, and described temperature sensor is arranged in described head tank, and described temperature sensor and thermostat are connected with described controller respectively, and described controller is connected with described pressure regulation unit.
3. wireless pressure data collecting instrument calibrating installation according to claim 1 and 2, is characterized in that: described pressure regulation unit comprises: digital pressure gauge standard, draft tube, gas outlet, gas admittance valve and vent valve; Described digital pressure gauge standard is connected with the compression fittings on pressure tank cover and measures the pressure in head tank, described draft tube and gas outlet communicate with described head tank through pressure tank cover, described gas admittance valve is arranged in draft tube, and described vent valve is arranged in gas outlet.
4. wireless pressure data collecting instrument calibrating installation according to claim 2, is characterized in that: described pressure regulation unit comprises pressure surge tank, wireway, gas admittance valve, air pump, air outlet valve, pressure transducer and pressure unit; Described pressure surge tank one end is connected with described air pump with gas admittance valve by wireway, and the other end is connected with described head tank with air outlet valve by wireway; Described pressure transducer to be arranged between described air outlet valve and described head tank and to communicate with described head tank, and is connected with described controller; Described gas admittance valve is connected with described controller with air outlet valve, and described pressure unit communicates with described pressure surge tank and measures the pressure size in pressure surge tank; Described pressure unit is connected with described controller.
5. the wireless pressure data collecting instrument calibrating installation according to claim 3 or 4, is characterized in that: described head tank is high pressure resistant, high temperature resistant and the good airtight tank body of heat-conductive characteristic.
6. wireless pressure data collecting instrument calibrating installation according to claim 5, is characterized in that: described pressure tank cover be high pressure resistant, high temperature resistant, heat-conductive characteristic is good and the lid that sealing is good.
7. wireless pressure data collecting instrument calibrating installation according to claim 6, is characterized in that: described pressure tank cover and described head tank are tightly connected.
8. a wireless pressure data collecting instrument calibration steps, is characterized in that: comprise the steps:
Step 1: carry out the calibration of pressure indicating value; Wireless pressure data collecting instrument to be measured is positioned in head tank, pressure tank cover is tightened head tank is sealed; By the temperature of controller setting thermostat, the temperature in head tank is made to remain on certain value; To head tank ventilation pressurization, and pointwise improves the size of pressure in head tank, acquisition digital pressure gauge standard or pressure transducer, in the indicating value of each spot pressure, obtain the positive and negative stroke indicating value of Acquisition Instrument at each spot pressure, and calculate the error of indication and the hysterisis error of Acquisition Instrument;
Step 2: carry out temperature characterisitic calibration; Pressure in head tank is kept on certain value, by the temperature of controller regulation thermostat, to change the temperature in head tank, obtain the positive and negative stroke indicating value of Acquisition Instrument at different temperatures, and calculate the error of indication and hysterisis error.
9. wireless pressure data collecting instrument calibration steps according to claim 8, it is characterized in that: the step that pressure indicating value measured by digital pressure gauge standard or pressure transducer is: after regulating in head tank pressure or regulating thermostatic actuator temperature, treat that pressure stability, internal and external temperature balance, then record the indicating value of digital pressure gauge standard or pressure transducer, and obtain the moment value recording this indicating value.
10. wireless pressure data collecting instrument calibration steps according to claim 9, it is characterized in that: the step that Acquisition Instrument measures pressure indicating value is: the pressure indicating value in the real-time real time record head tank of Acquisition Instrument, to be calibrated complete after, read and the indicating value recording digital pressure gauge standard or pressure transducer moment corresponding wireless pressure data collecting instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192576.7A CN104792458B (en) | 2015-04-22 | 2015-04-22 | A kind of wireless pressure data collecting instrument calibrating installation and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192576.7A CN104792458B (en) | 2015-04-22 | 2015-04-22 | A kind of wireless pressure data collecting instrument calibrating installation and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104792458A true CN104792458A (en) | 2015-07-22 |
| CN104792458B CN104792458B (en) | 2016-10-05 |
Family
ID=53557449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510192576.7A Active CN104792458B (en) | 2015-04-22 | 2015-04-22 | A kind of wireless pressure data collecting instrument calibrating installation and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104792458B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466633A (en) * | 2015-11-18 | 2016-04-06 | 西安航天计量测试研究所 | Pressure sensor calibration device under low temperature |
| 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 |
| CN105737796A (en) * | 2016-04-25 | 2016-07-06 | 苏州市建设工程质量检测中心有限公司 | Hydraulic leveling measurement system and measurement method thereof |
| CN106153251A (en) * | 2016-08-31 | 2016-11-23 | 合肥迈思瑞仪器仪表有限公司 | A kind of digital pressure gauge calibration verification technical method |
| 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 |
| 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 |
| CN112484916A (en) * | 2020-11-27 | 2021-03-12 | 北京航天计量测试技术研究所 | Temperature response characteristic calibration method for patch type pressure sensor |
| CN113252096A (en) * | 2021-04-30 | 2021-08-13 | 河南创仕航空科技有限公司 | Sensor initial calibration method |
| CN113432783A (en) * | 2021-07-16 | 2021-09-24 | 广州计量检测技术研究院 | Pressure measuring device under gaseous high temperature state |
| 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 |
| CN114061831A (en) * | 2022-01-12 | 2022-02-18 | 武汉飞恩微电子有限公司 | Performance testing device for pressure sensor production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001066210A (en) * | 1999-08-26 | 2001-03-16 | Yokogawa Electric Corp | Pressure measuring device and pressure calibrating device |
| 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 |
| CN103808460A (en) * | 2014-03-26 | 2014-05-21 | 北京航空航天大学 | Quick correcting system and method for static performance of pressure sensor |
| 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 |
-
2015
- 2015-04-22 CN CN201510192576.7A patent/CN104792458B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001066210A (en) * | 1999-08-26 | 2001-03-16 | Yokogawa Electric Corp | Pressure measuring device and pressure calibrating device |
| 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 |
| CN103808460A (en) * | 2014-03-26 | 2014-05-21 | 北京航空航天大学 | Quick correcting system and method for static performance of pressure sensor |
| 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 |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105466633A (en) * | 2015-11-18 | 2016-04-06 | 西安航天计量测试研究所 | Pressure sensor calibration device under low temperature |
| 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 |
| CN105737796A (en) * | 2016-04-25 | 2016-07-06 | 苏州市建设工程质量检测中心有限公司 | Hydraulic leveling measurement system and measurement method thereof |
| 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 |
| CN106153251A (en) * | 2016-08-31 | 2016-11-23 | 合肥迈思瑞仪器仪表有限公司 | 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 |
| CN107883991B (en) * | 2017-12-26 | 2024-07-02 | 华景传感科技（无锡）有限公司 | Sensor calibration device |
| 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 |
| CN110174341B (en) * | 2019-06-06 | 2024-04-26 | 交通运输部公路科学研究所 | Metering method and device for concrete impermeability instrument |
| CN112484916A (en) * | 2020-11-27 | 2021-03-12 | 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 |
| CN113432783A (en) * | 2021-07-16 | 2021-09-24 | 广州计量检测技术研究院 | Pressure measuring device under gaseous high temperature state |
| CN114061831A (en) * | 2022-01-12 | 2022-02-18 | 武汉飞恩微电子有限公司 | Performance testing device for pressure sensor production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104792458B (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104792458A (en) | Wireless pressure data acquiring instrument calibrating device and method thereof | |
| CN204514538U (en) | A kind of wireless pressure data collecting instrument calibrating installation with temperature-controlling system | |
| CN109323796B (en) | A kind of full warm area range pressure sensor scaling method | |
| CN103791985B (en) | Static mark side's calibrating installation and calibration steps thereof | |
| CN1856700B (en) | Calibration of a process pressure sensor | |
| CN106248295A (en) | The method of calibration of digital pressure testers based on temperature correction feedback | |
| CN202522295U (en) | System for calibrating turbine flow meter under condition of large flow of low-temperature medium | |
| CN101788315A (en) | Method for precisely measuring wet gas | |
| CN202903415U (en) | Process variable transmitter system provided with analog communication | |
| CN104122030A (en) | Method and system for measuring air flow pressure in test room | |
| CN205426416U (en) | Pressure sensor calbiration system | |
| CN104568078A (en) | On-site ground hydraulic experiment device calibration method | |
| CN105258914B (en) | A kind of low-speed wind tunnel flow field test micro-pressure measurement system | |
| CN113447234A (en) | Wind tunnel electronic pressure scanning valve traceability device and traceability method thereof | |
| CN110542535B (en) | Normalization method for pulse wind tunnel multi-sensor negative pressure test system | |
| CN204514539U (en) | A kind of with temperature automatically controlled and wireless pressure data collecting instrument calibrating installation that is control pressure system | |
| CN106996851A (en) | Combined sealing cavity volume baroceptor caliberating device | |
| JP7106756B2 (en) | remote seal diaphragm system | |
| CN217878160U (en) | Automatic calibration system of pressure transmitter | |
| CN214951687U (en) | Flow disc flow measuring device based on mass flow feedback adjustment | |
| CN109974932B (en) | Instrument static pressure correction system and method | |
| CN202002680U (en) | Temperature-pressure compensation metal tube float flowmeter | |
| CN112945458B (en) | Automatic test system, method and device for pressure gauge | |
| CN204514537U (en) | A kind of wireless pressure data collecting instrument calibrating installation | |
| CN206114033U (en) | Gas pressure regulating measurement cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |