Final report on supplementary comparison APMP.M.P-S8 in hydraulic gauge pressure from 100 MPa to 1000 MPa

Kobata, Tokihiko; Ide, Kazunori; Kajikawa, Hiroaki; Sabuga, Wladimir; Scheppner, Steffen; Schultz, Wilfried

doi:10.1088/0026-1394/47/1a/07009

Cited by 5 publications

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“…First experimental characterisation of multipliers 111 and 112 was performed immediately after their manufacture by Fluke in 500 MPa pressure range with the results [1] At PTB, the multipliers were calibrated in 1 GPa pressure range using as a reference PTB 200 MPa and 1 GPa pressure balances, which had been studied in detail and participated in several key comparisons [11,12,[21][22][23][24][25][26][27][28][29][30][31]. The 1 GPa and 200 MPa standards were connected to the HP and LP sides of multipliers using DHS in all instruments.…”

Section: Experimental Characterisation Of the 16 Gpa Pressure Multipl...mentioning

confidence: 99%

High pressure metrology for industrial applications

et al. 2017

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To meet the needs of industries using high pressure technologies, in traceable, reliable and accurate pressure measurements, a joint research project of the five national metrology institutes and the university was carried out within the European Metrology Research Programme. In particular, finite element methods were established for stress-strain analysis of elastic and nonlinear elastic-plastic deformation, as well as of contact processes in pressuremeasuring piston-cylinder assemblies, and high-pressure components at pressures above 1 GPa. New pressure measuring multipliers were developed and characterised, which allow realisation of the pressure scale up to 1.6 GPa. This characterisation is based on research including measurements of material elastic constants by the resonant ultrasound spectroscopy, hardness of materials of high pressure components, density and viscosity of pressure transmitting liquids at pressures up to 1.4 GPa and dimensional measurements on pistoncylinders. A 1.6 GPa pressure system was created for operation of the 1.6 GPa multipliers and calibration of high pressure transducers. A transfer standard for 1.5 GPa pressure range, based on pressure transducers, was built and tested. Herewith, the project developed the capability of measuring pressures up to 1.6 GPa, from which industrial users can calibrate their pressure measurement devices for accurate measurements up to 1.5 GPa.

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Section: Experimental Characterisation Of the 16 Gpa Pressure Multipl...mentioning

confidence: 99%

High pressure metrology for industrial applications

et al. 2017

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“…Table 3 shows the international comparisons in which AIST had participated and the ones in progress. AIST organized the international comparison as the pilot institute in the majority of the APMP international comparisons, and engaged in the creation of the execution schedule, drafting of the measurement manual, preparation of the transfer device and the property evaluation, organization of the comparison results, and the write-up of the final report [19]- [22] . In the international comparisons organized by AIST, the digital pressure gauge was used actively as the transfer device to enhance efficiency, as mentioned in subchapter 6.2.…”

Section: T I O N Va Lu E Of T H E R E M O T E C a Li B R A T I O N Wamentioning

confidence: 99%

Improvement of reliability in pressure measurements and international mutual recognition

Kobata¹,

Kojima²,

Kajikawa³

2012

Synthesiology English edition

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-Incorporation of industrial digital pressure gaugesto the national metrology systemReliable pressure measurements provide the basis for all activities in society and industry, and every country shows considerable interest in them in international trade. Recently, characteristics of industrial digital pressure gauges and the short-and long-term stabilities as well as the stability under environment change and during transportation have been improved remarkably. AIST focused its attention on the technological advancement, and, after evaluating the characteristics of digital pressure gauges in detail, incorporated them to some phases in the metrology system, which are the upgrading of national pressure standards, the international comparisons of the standards and the domestic traceability system. Consequently, the reliability of pressure measurements in industrial fields has been secured through an efficient process, and the international mutual recognition has been promoted by carrying out many international comparisons.

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“…The mechanical dial type pressure gauges have recently been used as TSs for the evaluation of participating laboratory's performance through interlaboratory comparison [7][8] in the pressure range up to 70 MPa within the accuracy limit of +0.25% of full scale or coarser. The strain gauge type PTs have also been used very sparingly but for high pressure ranges up to 1.4 GPa [9][10]. The capacitance type PT as TS has also been used and produces accurate and repeated results up to 500 MPa [11].…”

Section: Introductionmentioning

confidence: 99%

A Computer Controlled Precision High Pressure Measuring System

Sadana¹,

Yadav²,

Jha³

et al. 2011

Measurement Science Review

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A microcontroller (AT89C51) based electronics has been designed and developed for high precision calibrator based on Digiquartz pressure transducer (DQPT) for the measurement of high hydrostatic pressure up to 275 MPa. The input signal from DQPT is converted into a square wave form and multiplied through frequency multiplier circuit over 10 times to input frequency. This input frequency is multiplied by a factor of ten using phased lock loop. Octal buffer is used to store the calculated frequency, which in turn is fed to microcontroller AT89C51 interfaced with a liquid crystal display for the display of frequency as well as corresponding pressure in user friendly units. The electronics developed is interfaced with a computer using RS232 for automatic data acquisition, computation and storage. The data is acquired by programming in Visual Basic 6.0. This system is interfaced with the PC to make it a computer controlled system. The system is capable of measuring the frequency up to 4 MHz with a resolution of 0.01 Hz and the pressure up to 275 MPa with a resolution of 0.001 MPa within measurement uncertainty of 0.025%. The details on the hardware of the pressure measuring system, associated electronics, software and calibration are discussed in this paper.

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Final report on supplementary comparison APMP.M.P-S8 in hydraulic gauge pressure from 100 MPa to 1000 MPa

Cited by 5 publications

References 0 publications

High pressure metrology for industrial applications

High pressure metrology for industrial applications

Improvement of reliability in pressure measurements and international mutual recognition

A Computer Controlled Precision High Pressure Measuring System

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