SECTION 8 – TEMPERATURE MEASUREMENT

SECTION คำชี้แจง
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1. 8.51 The immersion time for a cup-case assembly is minimized by continually raising and lowering the assembly 0.3m [1 foot] above and below the desired temperature measurement point.
    a. True
    b. False
    c.
    d.
2. 8.10 To what increment should the display of a portable electronic thermometer be capable of reading?
    a. 0.5 °F or °C
    b. 0.1 °F or °C
    c. 1.0 °F or °C
    d. 0.25 °F or °C
3. 8.15 What information must be recorded when taking a temperature of a cargo using an in-line probe ?
    a. The last calibration date
    b. The serial number of the unit being used
    c. The last two times the probe was checked for accuracy
    d. Answers a., b. and c. are all wrong
4. 8.23 Liquid-in-glass thermometers are suitable for use in obtaining cargo product temperatures in marine vessels required to operate with closed or restricted systems?
    a. True
    b. False
    c.
    d.
5. 8.41 A liquid-in-glass thermometer must be verified against a thermometer traceable to a national standard when new and then at maximum intervals of?
    a. 3 months
    b. 6 months
    c. 1 year
    d. 5 years
6. 8.13 Upright cylindrical storage tanks have calibration tables based on a specific tank shell temperature. If the observed tank shell temperature differs from the calibration table tank temperature will the volumes extracted from the calibration table will need to be corrected for this temperature difference?
    a. Yes
    b. No
    c.
    d.
7. 8.20 What is the minimum amount of product needed for a temperature to be taken?
    a. Whenever there is sufficient material present to immerse the probe
    b. 30 cm [1 foot]
    c. One metre [3 feet]
    d. Temperatures should only be taken when the roof is floating freely
8. 8.01 API MPMS Chapter 7/ISO 4268 pertains to what type of thermometers?
    a. Mercury-in-glass
    b. Alcohol-in-glass
    c. Portable electronic thermometers
    d. Answers a., b. and c. are all correct
9. 8.46 When taking the temperature of a product in a tank and there is more than 1°C [2 °F] difference between upper, middle and lower temperatures, what steps should be taken?
    a. Retake the temperatures since there must be an error
    b. Use the middle temperature only for the entire tank contents
    c. Average the upper, middle and lower temperatures
    d. Take temperatures at more frequent, equally-spaced vertical increments
10. 8.27 On a portable electronic thermometer, at what temperature should the field check be performed ?
    a. 0°C [32°F]
    b. 100°C [212°F]
    c. Ambient temperature
    d. Expected cargo temperature
11. 8.49 What temperature is to be used during an ROB survey if there is only 5 cm [2 inches] of liquid in the bottom of the tank?
    a. The measured temperature at the middle of the liquid
    b. Standard Temperature
    c. The average temperature of the product in the tank before it was discharged
    d. The temperature stated by the vessel s representative
12. 8.07 When verifying a portable electronic thermometer with a range of 0 to 95 °C [32 to 200°F] , what is the maximum permissible error before it should be recalibrated?
    a. ± 0.3 °C [0.2°F]
    b. ± 0.05 °C [0.1°F]
    c. ± 1.0 °C [2.0°F]
    d. Answers a., b. and c. are all wrong - it must be exact
13. 8.28 When using a portable electronic thermometer what is an indication of temperature stabilization?
    a. Comparison with the side temperature on the tank
    b. Comparison with a cup-case thermometer
    c. Comparison with the last temperature recorded by the terminal
    d. Readout doesn t vary by more than 0.1°C [0.2°F] for 30 seconds
14. 8.02 Does API MPMS Chapter 7/ISO 4268 make any references to the construction of portable electronic thermometers?
    a. Yes
    b. No
    c.
    d.
15. 8.37 Which API MPMS Chapter covers temperature determination?
    a. Chapter 3
    b. Chapter 7
    c. Chapter 8
    d. Chapter 17
16. 8.36 A liquid-in-glass thermometer with a range between 60°F and 180°F and must be accurate to within?
    a. ± 1.0 °F
    b. ± 0.5 °F
    c. ± 0.1 °F
    d. ± 0.25 °F
17. 8.12 If a portable electronic thermometer has a range of 0 - 95 °C [32-200°F], what is the required resolution?
    a. ± 1°C [ 2°F]
    b. ± 0.2°C [ 0.4°F]
    c. ± 0.1°C [ 0.2°F]
    d. Answers a., b. and c. are all wrong
18. 8.18 If only one temperature is required where should this temperature be taken from?
    a. The middle of the upper third
    b. The middle of the liquid level
    c. The middle of the lower third.
    d. Use a side readout thermometer
19. 8.40 When first received from the manufacturer or equipment supplier, what should happen to a new liquid-in-glass tank thermometer?
    a. It can be used immediately because the manufacturer calibrates the thermometer before it is shipped
    b. It must be checked to see that the liquid column is intact, then it may be used since the manufacturer will have calibrated the thermometer.
    c. It must be checked to see that the glass stem is not cracked or broken, then it may be used since the manufacturer will have calibrated the thermometer
    d. It must be compared against a thermometer certified by a National Standard body or an equivalent thermometer of traceable accuracy.
20. 8.14 When using a liquid-in-glass thermometer it is important to consider that
    a. It should remain in the oil long enough to reach the temperature of the liquid
    b. It takes longer to obtain temperatures with a liquid in glass thermometer than a portable electronic thermometer
    c. It should be lowered using a gauging tape
    d. Answers a. and b are correct
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