Q PROCESS INSTRUMENTATION CH. 10 TEST A. Parallel data communication B. Accuracy C. Algorithm D. Final control element E. Basic control functions F. Closed control loop G. Mechanical link H. Pneumatic signal I. Comparator J. Comparing, calculating, and correcting element K. Measured variable L. Controlled variable M. Converting and transmitting element N. Digital signal O. Electronic signal P. Manipulating element Q. Feedback loop R. Live zero S. Controller T. Loop error U. Open control loop V. Converting device W. Precision Z. Transmitter a. Process control b. Transducer c. Process error d. Standard instrument signal e. Sensing f. Sensing element g. Set point 1.__how close repeated measurements are versus the action; reproducibility; the closeness of repeated measurements of the same quantity 2.__the act of regulating one or more process variables so that a product a desired quality can be produced 3.__the difference between set point and process variable (SP - PV) 4.__the act of detecting 5.__--the control loop component that detects, or senses, the process variable 6.__--two data wires; the most common means of communication used between plant equipmen 7.__-the desired RPM indication where a controller is set for optimum operation 8.__-any kind of detectable quantity used to communicate information in a standard format for control 9.__-a device that receives information in one form of instrument signal and changes it into another form of instrument signal 10.__-the control loop component that receives a signal from the sensor, measures that signal, and sends it forward to the controller or indicator 11.__how close a measurement corresponds to its true value 12.__preset mathematical function calculated in a controller that can bemechanical, analog, or digital. The three most common output functions deal with proportional (P), integral (I), and derivative (D) tuning, 13.__sensing, measuring, comparing, calculating, correcting, and manipulating, ph. 180 14.__when a control loop has feedback (eg, controller in automatic mode), 15.__by the corrective response of the controller output to maintain the process variable 16.__a way of mechanically transmitting the motion of a primary sensor to a controlling mechanism; conveys linear or rotary motion by using a pivoting crank 17.__-one wire per bit or 64+ wires for a 64-bit binary word; used primarily in short distances, of 18.__-an instrument communication with a range of 3-15 PSIG;must have an instrument air supply, has a lag time associated with the signal; relatively short transmission distance 19.__-component of a controller that compares the measurement to a predetermined set point 20.__--the control loop component that receives the appropriate signal from the transmitter and compares the signal to desired value (set point); if there is a difference, then the output of the comparison causes a calculation to be performed to cause a corrective response by the controller output signal to the final control element, 21.__-a process variable that is sensed to initiate the control signal 22.__an instrument that receives a signal from the transmitter, compares it to a set point, and produces an output to a final control element 23.__he control loop component that converts the sensed process variable and transmits the measured signal 24.__-a device that receives information in one form of an instrument signal and changes it into another form of an instrument signal 25.__-data that is represented as coded information in the form of binary numbers; used to transmit data to and from field transmitters on a twisted pair of wires; may also be between computers and computer components 26.__-analog or digital signal; current or voltage signal 27.__-the most common type of control loop where the change caused by the output of the controller is fed back to the process, providing a self-regulating action 28.__-the last active device in an instrument control loop; it directly controls the manipulated variable; usually a control valve, a louver, or an electric motor, 29.__-a standard bias added to the instrument signal (e.g., pneumatic 3 to 15 PSIG or electronic 4 to 20 mA); instead of reading zero, 0 percent of scale would have a reading of 3 PSIG(pneumatic) or 4 mA (electronic) 30.__-the accumulated error of each device in the loop, calculated as the square root of the sum of the squares of individual device accuracy 31.__—the final control element (e.g., control valve) manipulated at the correct set point value 32.__-a process variable that is measured 33. Which of the following is an example of a transduced variable? (Select all that apply.) a. Temperature b. Pressure c. Air humidity d. Sound pressure 33. Process control is the act of_______ process variables. a. sensing b. measuring c. tweaking d. regulating 34. (True or False) A closed loop is a signal path WITH feedback. 35. Write OPEN or CLOSED Loop next to the following devices. Device a. Light switch b. Toilet flush c. Water faucet d. Automobile cruise control 36. Which of the following is the most prominent converting device in the process industries? a. I/P converter b. P/E converter c. E/P converter d. D/A converter 37. Match the type of signal with the description of how the signal is transmitted. Signal 1. Pneumatic II. Electronic analog III. Electronic digital IV. Mechanical link Description a. Transmits motion b. Transmits pounds per square Inch c. Transmits binary code d. Transmits milliamps A. Parallel data communication B. Accuracy C. Algorithm D. Final control element E. Basic control functions F. Closed control loop G. Mechanical link H. Pneumatic signal I. Comparator J. Comparing, calculating, and correcting element K. Measured variable L. Controlled variable M. Converting and transmitting element N. Digital signal O. Electronic signal P. Manipulating element Q. Feedback loop R. Live zero S. Controller T. Loop error U. Open control loop V. Converting device W. Precision Z. Transmitter a. Process control b. Transducer c. Process error d. Standard instrument signal e. Sensing f. Sensing element g. Set point 1.__how close repeated measurements are versus the action; reproducibility; the closeness of repeated measurements of the same quantity 2.__the act of regulating one or more process variables so that a product a desired quality can be produced 3.__the difference between set point and process variable (SP - PV) 4.__the act of detecting 5.__--the control loop component that detects, or senses, the process variable 6.__--two data wires; the most common means of communication used between plant equipmen 7.__-the desired RPM indication where a controller is set for optimum operation 8.__-any kind of detectable quantity used to communicate information in a standard format for control 9.__-a device that receives information in one form of instrument signal and changes it into another form of instrument signal 10.__-the control loop component that receives a signal from the sensor, measures that signal, and sends it forward to the controller or indicator 11.__how close a measurement corresponds to its true value 12.__preset mathematical function calculated in a controller that can bemechanical, analog, or digital. The three most common output functions deal with proportional (P), integral (I), and derivative (D) tuning, 13.__sensing, measuring, comparing, calculating, correcting, and manipulating, ph. 180 14.__when a control loop has feedback (eg, controller in automatic mode), 15.__by the corrective response of the controller output to maintain the process variable 16.__a way of mechanically transmitting the motion of a primary sensor to a controlling mechanism; conveys linear or rotary motion by using a pivoting crank 17.__-one wire per bit or 64+ wires for a 64-bit binary word; used primarily in short distances, of 18.__-an instrument communication with a range of 3-15 PSIG;must have an instrument air supply, has a lag time associated with the signal; relatively short transmission distance 19.__-component of a controller that compares the measurement to a predetermined set point 20.__--the control loop component that receives the appropriate signal from the transmitter and compares the signal to desired value (set point); if there is a difference, then the output of the comparison causes a calculation to be performed to cause a corrective response by the controller output signal to the final control element, 21.__-a process variable that is sensed to initiate the control signal 22.__an instrument that receives a signal from the transmitter, compares it to a set point, and produces an output to a final control element 23.__he control loop component that converts the sensed process variable and transmits the measured signal 24.__-a device that receives information in one form of an instrument signal and changes it into another form of an instrument signal 25.__-data that is represented as coded information in the form of binary numbers; used to transmit data to and from field transmitters on a twisted pair of wires; may also be between computers and computer components 26.__-analog or digital signal; current or voltage signal 27.__-the most common type of control loop where the change caused by the output of the controller is fed back to the process, providing a self-regulating action 28.__-the last active device in an instrument control loop; it directly controls the manipulated variable; usually a control valve, a louver, or an electric motor, 29.__-a standard bias added to the instrument signal (e.g., pneumatic 3 to 15 PSIG or electronic 4 to 20 mA); instead of reading zero, 0 percent of scale would have a reading of 3 PSIG(pneumatic) or 4 mA (electronic) 30.__-the accumulated error of each device in the loop, calculated as the square root of the sum of the squares of individual device accuracy 31.__—the final control element (e.g., control valve) manipulated at the correct set point value 32.__-a process variable that is measured 33. Which of the following is an example of a transduced variable? (Select all that apply.) a. Temperature b. Pressure c. Air humidity d. Sound pressure 33. Process control is the act of_______ process variables. a. sensing b. measuring c. tweaking d. regulating 34. (True or False) A closed loop is a signal path WITH feedback. 35. Write OPEN or CLOSED Loop next to the following devices. Device a. Light switch b. Toilet flush c. Water faucet d. Automobile cruise control 36. Which of the following is the most prominent converting device in the process industries? a. I/P converter b. P/E converter c. E/P converter d. D/A converter 37. Match the type of signal with the description of how the signal is transmitted. Signal 1. Pneumatic II. Electronic analog III. Electronic digital IV. Mechanical link Description a. Transmits motion b. Transmits pounds per square Inch c. Transmits binary code d. Transmits milliamps PreviousNext