© 2019 Department of Petroleum Resources. All rights reserved Department of Petroleum Resources (DPR) PROCEDURE GUIDE

Page 7 of 114
 
6 | P a g e 
 
 
2.6.7 Quality Control Chart ........................................................................................... 59 
PART III .......................................................................................................................... 60 
PROCEDURE GUIDE FOR THE CALIBRATION AND CERTIFICATION OF MEASURING 
EQUIPMENT .................................................................................................... 60 
1.1 Application .............................................................................................................. 61 
1.2    General Guidelines ............................................................................................... 61 
PART III Section 2 .......................................................................................................... 62 
Calibration ..................................................................................................................... 62 
2.1 Calibration of Mercury in Glass Thermometers ..................................................... 63 
2.1.1 Accreditation ........................................................................................................ 63 
2.1.2 Principle ............................................................................................................... 63 
2.1.3 Frequency of Calibration ...................................................................................... 63 
2.1.4 Applicable Standard ............................................................................................. 63 
2.1.5   Calibration Equipment ....................................................................................... 63 
2.1.6 Verification and Calibration ................................................................................. 63 
2.1.7   Presentation of Results ...................................................................................... 64 
2.2 Calibration of Hydrometers and Densitometers .................................................... 64 
2.2.1 Accreditation ........................................................................................................ 64 
2.2.2 Principle ............................................................................................................... 64 
2.2.3 Frequency of Calibration ...................................................................................... 64 
2.2.4 Applicable Standard ............................................................................................. 64 
2.2.5 Verification and Calibration ................................................................................. 64 
2.2.6 Presentation of Results ........................................................................................ 65 
2.3 Calibration of Pressure and Differential Pressure Measuring Devices ................... 65 
2.3.1 Accreditation ........................................................................................................ 65 
2.3.2 Principle ............................................................................................................... 65 
2.3.3 Frequency of Calibration ...................................................................................... 65 
2.3.4 Applicable Standard ............................................................................................. 65 
2.3.5 Verification and Calibration ................................................................................. 65