This part of ISO 4266 gives guidance on the selection, accuracy, installation, commissioning, calibration and verification of automatic tank thermometers (ATTs) in fiscal\/custody transfer applications in which the ATT is used for measuring the temperature of petroleum and liquid petroleum products having a Reid vapour pressure less than 100 kPa, stored in atmospheric storage tanks.<\/p>\n
This part of ISO 4266 is not applicable to the measurement of temperature in caverns or in refrigerated storage tanks.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 3<\/td>\n | TitlePage – Petroleum and liquid petroleum products\ufffd\u2014 Measurement of level and temperature in sto… <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | TableofContent – Contents Page <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Foreword – Foreword <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Scope – 1\ufffd\ufffd\ufffd Scope NormativeReference – 2\ufffd\ufffd\ufffd Normative references <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Clause1 – 4\ufffd\ufffd\ufffd Precautions Subclause2 – 4.1\ufffd\ufffd\ufffd Safety precautions Subclause2 – 4.2\ufffd\ufffd\ufffd Equipment precautions UntitledSubclause3 – 4.2.1\ufffd\ufffd\ufffd All of the ATT equipment should be capable of withstanding the pres… UntitledSubclause3 – 4.2.2\ufffd\ufffd\ufffd ATTs should be certified for use in the hazardous-area classificati… UntitledSubclause3 – 4.2.3\ufffd\ufffd\ufffd Measures should be taken to ensure that all exposed metal parts of … UntitledSubclause3 – 4.2.4\ufffd\ufffd\ufffd All parts of the ATT in contact with the product or its vapour shou… UntitledSubclause3 – 4.2.5\ufffd\ufffd\ufffd All AT\ufffdT equipment should be maintained in safe operating condition… <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | UntitledSubclause3 – 4.2.6\ufffd\ufffd\ufffd The temperature elements should be located so that the temperature … Subclause2 – 4.3\ufffd\ufffd\ufffd General precautions UntitledSubclause3 – 4.3.1\ufffd\ufffd\ufffd The general precautions given in UntitledSubclause3 – 4.3.2\ufffd\ufffd\ufffd Tank levels should be measured at the same time as the tank tempera… UntitledSubclause3 – 4.3.3\ufffd\ufffd\ufffd Temperatures measured for bulk transfer should be recorded when the… UntitledSubclause3 – 4.3.4\ufffd\ufffd\ufffd The same general procedures should be used to measure a tank temper… UntitledSubclause3 – 4.3.5\ufffd\ufffd\ufffd ATTs should provide security to prevent unauthorized adjustment or … UntitledSubclause3 – 4.3.6\ufffd\ufffd\ufffd The design and installation of ATTs may be subject to the approval … Clause1 – 5\ufffd\ufffd\ufffd Accuracy Subclause2 – 5.1\ufffd\ufffd\ufffd General Subclause2 – 5.2\ufffd\ufffd\ufffd Intrinsic error of AT\ufffdTs Subclause2 – 5.3\ufffd\ufffd\ufffd Calibration prior to installation Subclause3 – 5.3.1\ufffd\ufffd\ufffd General <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Subclause3 – 5.3.2\ufffd\ufffd\ufffd AT\ufffdT calibrated as a system Subclause3 – 5.3.3\ufffd\ufffd\ufffd AT\ufffdT calibrated by components Subclause3 – 5.3.4\ufffd\ufffd\ufffd Multiple-point ATTs Subclause3 – 5.3.5\ufffd\ufffd\ufffd Variable-length AT\ufffdTs Subclause3 – 5.3.6\ufffd\ufffd\ufffd Uncertainty of the reference Subclause2 – 5.4\ufffd\ufffd\ufffd Error caused by installation and operating conditions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Subclause2 – 5.5\ufffd\ufffd\ufffd Overall accuracy Subclause3 – 5.5.1\ufffd\ufffd\ufffd General Subclause3 – 5.5.2\ufffd\ufffd\ufffd Use of ATT for fiscal\/custody transfer purposes Clause1 – 6\ufffd\ufffd\ufffd Selection of ATTs Subclause2 – 6.1\ufffd\ufffd\ufffd General <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Subclause2 – 6.2\ufffd\ufffd\ufffd AT\ufffdTs for fiscal\/custody transfer purposes Clause1 – 7\ufffd\ufffd\ufffd Description of ATT equipment Subclause2 – 7.1\ufffd\ufffd\ufffd Introduction Subclause2 – 7.2\ufffd\ufffd\ufffd Electrical temperature elements Subclause3 – 7.2.1\ufffd\ufffd\ufffd Resistance temperature detectors <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Subclause3 – 7.2.2\ufffd\ufffd\ufffd Other temperature elements Clause1 – 8\ufffd\ufffd\ufffd Installation of ATTs Subclause2 – 8.1\ufffd\ufffd\ufffd General Subclause2 – 8.2\ufffd\ufffd\ufffd Single-point (spot) temperature elements Subclause2 – 8.3\ufffd\ufffd\ufffd Averaging temperature elements Subclause3 – 8.3.1\ufffd\ufffd\ufffd General Subclause3 – 8.3.2\ufffd\ufffd\ufffd Upper, middle and lower temperature elements <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Subclause3 – 8.3.3\ufffd\ufffd\ufffd Multiple-point temperature elements Subclause3 – 8.3.4\ufffd\ufffd\ufffd Variable-length RTD temperature elements Subclause3 – 8.3.5\ufffd\ufffd\ufffd Mid-level temperature element Subclause3 – 8.3.6\ufffd\ufffd\ufffd Moveable spot temperature element <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Subclause3 – 8.3.7\ufffd\ufffd\ufffd Other methods Subclause2 – 8.4\ufffd\ufffd\ufffd Thermowells for electronic temperature elements <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Clause1 – 9\ufffd\ufffd\ufffd Calibration and field verification of ATTs Subclause2 – 9.1\ufffd\ufffd\ufffd Introduction Subclause2 – 9.2\ufffd\ufffd\ufffd Calibration of single-point, or mid-level temperature element ATTs for fiscal… Subclause3 – 9.2.1\ufffd\ufffd\ufffd Calibration prior to installation Subclause3 – 9.2.2\ufffd\ufffd\ufffd Initial field verification Subclause4 – 9.2.2.1\ufffd\ufffd\ufffd Verification by components Subclause5 – 9.2.2.1.1\ufffd\ufffd\ufffd Temperature element Subclause5 – 9.2.2.1.2\ufffd\ufffd\ufffd Temperature transmitter <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Subclause4 – 9.2.2.2\ufffd\ufffd\ufffd Verification as a system Subclause2 – 9.3\ufffd\ufffd\ufffd Calibration of upper, middle and lower or multiple-point ATTs for fiscal\/cust… Subclause3 – 9.3.1\ufffd\ufffd\ufffd Calibration prior to installation Subclause3 – 9.3.2\ufffd\ufffd\ufffd Initial field verification Subclause4 – 9.3.2.1\ufffd\ufffd\ufffd Verification by components Subclause5 – 9.3.2.1.1\ufffd\ufffd\ufffd Temperature element Subclause5 – 9.3.2.1.2\ufffd\ufffd\ufffd Temperature transmitter Subclause4 – 9.3.2.2\ufffd\ufffd\ufffd Verification as a system <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Subclause2 – 9.4\ufffd\ufffd\ufffd Calibration of variable-length ATTs for fiscal\/custody transfer purposes Subclause3 – 9.4.1\ufffd\ufffd\ufffd Calibration prior to installation Subclause3 – 9.4.2\ufffd\ufffd\ufffd Initial field verification Subclause2 – 9.5\ufffd\ufffd\ufffd Subsequent verification of ATTs Subclause3 – 9.5.1\ufffd\ufffd\ufffd General Subclause3 – 9.5.2\ufffd\ufffd\ufffd Frequency of subsequent verification Subclause3 – 9.5.3\ufffd\ufffd\ufffd Record keeping Clause1 – 10\ufffd\ufffd\ufffd Data communication and receiving <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods – Measurement of temperature in atmospheric tanks<\/b><\/p>\n |