Lpg Prover Calibration

1 Page 1 SOP 21 – 2019 Page 1 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 SOP 21 Standard Operating Procedure for Calibration of LPG Provers 1 1 Introduction Purpose This... Open at page → 2 Page 2 SOP 21 – 2019 Page 2 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 All calibration values must have demonstrated metrological traceability to the International Syst... Open at page → 3 Page 3 SOP 21 – 2019 Page 3 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 All data and appropriate environmental conditions must be documented regardless of calibration lo... Open at page → 4 Page 4 SOP 21 – 2019 Page 4 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 A calibrated standard prover having a minimum volume of 5 gal is acceptable for 20 gal and 25 gal... Open at page → 5 Page 5 SOP 21 – 2019 Page 5 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 systematic errors in the prover pressure gauge will be present in field application and use, thus... Open at page → 6 Page 6 SOP 21 – 2019 Page 6 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 isolation valve will result in errors during the pressurized portion of the prover calibration. T... Open at page → 7 Page 7 SOP 21 – 2019 Page 7 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 level in the standard from nominal) and water temperature reading in the standard . If multiple t... Open at page → 8 Page 8 SOP 21 – 2019 Page 8 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 2.4.4.10 Calculate the effective volume of water delivered into the prover using Eqn. 3 or Eqn. 4... Open at page → 9 Page 9 SOP 21 – 2019 Page 9 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 pressure deformation; all resulting in a drifting pressure setting as the system comes to equilib... Open at page → 10 Page 10 SOP 21 – 2019 Page 10 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 2.4.6.1 With the pressure in the prover at 100 psig, the prover volume, calculated using the app... Open at page → 11 Page 11 SOP 21 – 2019 Page 11 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 Final Operations 2.4.7.1 Seal the bottom and top scales as specified by laboratory policy and as... Open at page → 12 Page 12 SOP 21 – 2019 Page 12 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 These equations correct the volume of water in the unknown prover for the effects of temperature... Open at page → 13 Page 13 SOP 21 – 2019 Page 13 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 where the water compressibility factor at 60 °F and 100 psig is 1.000322. Caution: Be certain to... Open at page → 14 Page 14 SOP 21 – 2019 Page 14 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 Calculate the within process standard deviation, s w, for the replicate runs. For two runs, the... Open at page → 15 Page 15 SOP 21 – 2019 Page 15 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 A standard deviation chart is used for measurement assurance through the evaluation of replicate... Open at page → 16 Page 16 SOP 21 – 2019 Page 16 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 The standard deviation of the measurement process s p, is taken from a standard deviation chart... Open at page → 17 Page 17 SOP 21 – 2019 Page 17 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 Table 6. Example uncertainty budget table. Uncertainty Component Description Symbol Source Typic... Open at page → 18 Page 18 SOP 21 – 2019 Page 18 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 The certificate should also include temperature and pressure correction table s or chart, along... Open at page → 19 Page 19 SOP 21 – 2019 Page 19 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 Figure 1. Representative LPG Prover Schematic Open at page → 20 Page 20 SOP 21 – 2019 Page 20 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 Appendix A: Data Recording Sheet LPG Prover Calibration Page 1 of 2 Laboratory Information Metro... Open at page → 21 Page 21 SOP 21 – 2019 Page 21 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 Appendix A: Data Recording Sheet LPG Prover Calibration Page 2 of 2 Run 2: Data for volumes deli... Open at page → 22 Page 22 SOP 21 – 2019 Page 22 of 22 This publication is available free of charge from: https://doi.org/10.6028/NIST.IR. 7383 - 2019 Appendix B Example Temperature Correction Table A Example for a 100 gallon prover and 60 °F refe... Open at page →