1. Which of the following is usually adjusted first when calibrating an electronic pressure transmitter?
2. In most process control systems the final control element is a:
3. Which type of flowmeter measures flow by measuring volume directly?
4. The variable is the part of the process which is adjusted to close the gap between the set point and the value of the controlled variable.
5. A hollow metal cylinder which guides the movement of the plug and holds the seat ring in place is found in a:
6. The flow rate in gallons per minute of water provided by a differential pressure of 1.0 psi through a fully opened control valve is a definition of:
7. A plant has a water tank which is 35 feet high and 40 feet in diameter mounted on top of a tower which is 85 feet high. If a pressure gauge is connected to the tank and mounted at 5 feet above ground level, what is the water level in the tank if the gauge reads 48 psi?
8. A differential pressure transmitter is connected to measure the level of a liquid in a tank. The 'high' side of the sensor will be connected:
9. An absolute pressure gauge which has been properly calibrated at sea level will read at an elevation of 10,000 feet.
10. Which of the following vessels will cause the highest indicated pressure on a gauge when filled with 120 inches of water?
11. A thermocouple should generally be installed so that the junction comes in direct contact with:
12. A magnetic flowmeter requires:
13. Three cubic feet of a liquid, SG of 1.5, would weigh:
14. The most common wiring method for an RTD is:
15. Differential pressure transmitters measure level by inference from:
16. As the speed (velocity) of a liquid through a restriction increases, the fluid pressure:
17. The following symbol would most likely represent a:
18. The temperature range of a transmitter is 0-200°F. The output signal is 3-15 psig. What would be the expected output signal for an input temperature of 175°F.
19. An open tank has 72 inches of a liquid, SG of 1.2. A gauge mounted 6 inches above the bottom of the tank will read:
20. A battery is rated at 12 volts and 11 Amp-Hours. If a 100 ohm load is connected to the battery, how long will the battery be able to supply power to the load?
21. The positive lead of a thermocouple would be identified by the color:
22. In graphing the output of an instrument with a span error the result would be a line which was:
23. A dead weight tester would be used to calibrate a:
24. A column of mercury, 27.7 inches high would produce a pressure of:
25. A process variable which is changed in order to control some other variable is the:
26. A transmitter which produces an output of 4-20mA for an input of 75-200°F would have a gain of:
27. When referring to a controller, 'reset' is also known as:
28. Which device would be used to configure a transmitter or device which contains an EEPROM:
29. Calibration equipment must be __________ than the instrument being calibrated.
30. In a home heating system, the thermostat determines the:
31. When checking the calibration of an instrument you find that it renders different readings when comparing the upward to downward test points. This would indicate that the instrument has:
32. Using a valve that is undersized for an application may cause:
33. On a P&ID drawing the connection between a transmitter and a controller is shown with a solid line having a double diagonal slash mark. This would indicate that the signal between the transmitter and controller is:
34. The stem, plug, and seat are all part of a valve’s:
35. The Reynolds number is used when:
36. In order to produce a linear output, a flow transmitter used with an orifice plate must have:
37. Which of the following does not require 'instrument air'?
38. A bubbler has the following instruments connected as part of the control loop; FI1001, PCV1001, LIT1001, LIC1001. Which device would most commonly be used to indicate the level to the operator?
39. A displacer has a diameter of 6 inches and a length of 36 inches. When placed in a tank of water, 12 inches of the displacer remain above the water. How much does the displacer weigh?
40. A five point check of an instrument which is calibrated for 0-30 in./H2O would be done at what values? (ISA standard percentage values)
41. In calibrating a differential pressure transmitter, test point readings are made:
42. If the output of a temperature transmitter is 8.2 psi, and the input is calibrated for a range of 50-400°C, the input temperature should be:
43. A differential pressure transmitter is used to measure the level of liquid in a tank which is ten feet high. If the tank is filled with a liquid that has a specific gravity of 0.78 the transmitter should be calibrated to a span of _____ inches of H2O.
44. The pressure taps for standard orifice plate flanges are located how far upstream and how far downstream from the leading and trailing edges of the orifice plate?
45. What is the value of a resistor that is color coded, yellow - violet - yellow - gold?
46. Temporary information storage is usually done in:
47. The number 77 in octal is equal to ____ in decimal.
48. A tank contains 5 cubic feet of a liquid. The liquid weighs 400 pounds. The specific gravity of the liquid is:
49. Which of the following devices would be used to convert an electrical signal to a pneumatic pressure?