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Design of Level-Control System for Liquid Flow The figure on next page shows a simple level-control system in which a closed relay opens the valve and an open relay closes the valve. Input flow is not controlled. The level sensor has a transfer function of Vn = 0.8h + 0.4. The system uses 12 V supply. The relay closes at 6.x V and opens again at 4.y V. Here x is the most significant digit (MSD) and y is the least significant digit (LSD) of the average of last two digits of the three student IDs in a group. For example: Average Student ID F2017019031 F2017019036 F2017019057 Last 2 digits 31 36 57 y 31 + 36 + 57 41.33 Level Tank radius 2.0 m sensor Valve O Qout V, - KVn Relay Level-Control System a. Find the value of amplifier gain, K, required to open the valve when the level reaches 1.5 m. b. At what level does the valve close? c. Suppose Q1 = 5 m3/min, Q2 = 2 m³/min and Qout = 9 m³/min (when open). What is the period of the level oscillation?

Design of Level-Control System for Liquid Flow The figure on next page shows a simple level-control system in which a closed relay opens the valve and an open relay closes the valve. Input flow is not controlled. The level sensor has a transfer function of Vn = 0.8h + 0.4. The system uses 12 V supply. The relay closes at 6.x V and opens again at 4.y V. Here x is the most significant digit (MSD) and y is the least significant digit (LSD) of the average of last two digits of the three student IDs in a group. For example: Average Student ID F2017019031 F2017019036 F2017019057 Last 2 digits 31 36 57 y 31 + 36 + 57 41.33 Level Tank radius 2.0 m sensor Valve O Qout V, - KVn Relay Level-Control System a. Find the value of amplifier gain, K, required to open the valve when the level reaches 1.5 m. b. At what level does the valve close? c. Suppose Q1 = 5 m3/min, Q2 = 2 m³/min and Qout = 9 m³/min (when open). What is the period of the level oscillation?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Design of Level-Control System for Liquid Flow The figure on next page shows a simple level-control system in which a closed relay opens the valve and an open relay closes the valve. Input flow is not controlled. The level sensor has a transfer function of Vr = 0.8h + 0.4. The system uses 12 V supply. The relay closes at 6.x V and opens again at 4.y V. Here x is the most significant digit (MSD) and y is the least significant digit (LSD) of the average of last two digits of the three student IDs in a group. For example: Student ID Last 2 digits Average y F2017019031 F2017019036 31 36 57 31 + 36 + 57 4 F2017019057 Level Tank radius 2.0 m sensor Valve O Qout V, = KVh Relay Level-Control System Find the value of amplifier gain, K, required to open the valve when the level reaches 1.5 m. а. b. At what level does the valve close? c. Suppose Q1 = 5 m³/min, Q2 = 2 m³/min and Qout = 9 m³/min (when open). What is the period of the level oscillation? d. Design a circuit to interface the sensor with a 6-bit dual-slope analog-to-digital converter (ADC) with a 10-V reference.
Transcribed Image Text:Design of Level-Control System for Liquid Flow The figure on next page shows a simple level-control system in which a closed relay opens the valve and an open relay closes the valve. Input flow is not controlled. The level sensor has a transfer function of Vr = 0.8h + 0.4. The system uses 12 V supply. The relay closes at 6.x V and opens again at 4.y V. Here x is the most significant digit (MSD) and y is the least significant digit (LSD) of the average of last two digits of the three student IDs in a group. For example: Student ID Last 2 digits Average y F2017019031 F2017019036 31 36 57 31 + 36 + 57 4 F2017019057 Level Tank radius 2.0 m sensor Valve O Qout V, = KVh Relay Level-Control System Find the value of amplifier gain, K, required to open the valve when the level reaches 1.5 m. а. b. At what level does the valve close? c. Suppose Q1 = 5 m³/min, Q2 = 2 m³/min and Qout = 9 m³/min (when open). What is the period of the level oscillation? d. Design a circuit to interface the sensor with a 6-bit dual-slope analog-to-digital converter (ADC) with a 10-V reference.
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