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In factory instrumentation, process parameters such as pressure and flow rate are measured, converted to electrical signals, and sent some distance to an electronic controller. The controller then decides what actions should be taken. One of the main concerns in these systems is the physical distance between the sensor and the controll er. An industry standard format for encoding the measurement value is called the 4-20 mA standard, where the parameter range is linearly di stributed from 4 to 20 mA. For example. a 100 psi pressure se nsor would output 4 rnA if the pressure were 0 psi, 20 mA at 100 psi, and 12 mA at 50 psi. But most instrumentation is based on voltages between 0 and 5 V, not on currents. Using the circuit below as a model, design a current-to-voltage converter that will output 5 V when the current signal is 20 mA The wiring from the sensor unit to the controller has some resistance, Rwire. If the sensor output were a voltage proportional to pressure, the voltage drop in the line would cause measurement error even if the sensor output were an ideal source of voltage. But, since the data are contained in the current value, Rwire does not affect the accuracy at the controller as long as the sensor acts as an ideal current source. Sensor model Rwire I to V Controller converter If you will design design a current-to-voltage converter as shown in the circuit below that will output 5 V when the current signal is 20 mA, what should be the value of the resistor to be connected across the controller to produce the required 5 V Answer ohms (round off your answer, no decimal point, no units) Sensor model Rwire Controller ww

In factory instrumentation, process parameters such as pressure and flow rate are measured, converted to electrical signals, and sent some distance to an electronic controller. The controller then decides what actions should be taken. One of the main concerns in these systems is the physical distance between the sensor and the controll er. An industry standard format for encoding the measurement value is called the 4-20 mA standard, where the parameter range is linearly di stributed from 4 to 20 mA. For example. a 100 psi pressure se nsor would output 4 rnA if the pressure were 0 psi, 20 mA at 100 psi, and 12 mA at 50 psi. But most instrumentation is based on voltages between 0 and 5 V, not on currents. Using the circuit below as a model, design a current-to-voltage converter that will output 5 V when the current signal is 20 mA The wiring from the sensor unit to the controller has some resistance, Rwire. If the sensor output were a voltage proportional to pressure, the voltage drop in the line would cause measurement error even if the sensor output were an ideal source of voltage. But, since the data are contained in the current value, Rwire does not affect the accuracy at the controller as long as the sensor acts as an ideal current source. Sensor model Rwire I to V Controller converter If you will design design a current-to-voltage converter as shown in the circuit below that will output 5 V when the current signal is 20 mA, what should be the value of the resistor to be connected across the controller to produce the required 5 V Answer ohms (round off your answer, no decimal point, no units) Sensor model Rwire Controller ww

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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In factory instrumentation, process parameters such as pressure and flow rate are measured, converted to electrical signals, and sent some distance to an electronic controller. The controller then decides what actions should be taken. One of the main concerns in these systems is the physical distance between the sensor and the controll er. An industry standard format for encoding the measurement value is called the 4-20 mA standard, where the parameter range is linearly di stributed from 4 to 20 mA. For example. a 100 psi pressure se nsor would output 4 rnA if the pressure were 0 psi, 20 mA at 100 psi, and 12 mA at 50 psi. But most instrumentation is based on voltages between 0 and 5 V, not on currents. Using the circuit below as a model, design a current-to-voltage converter that will output 5 V when the current signal is 20 mA The wiring from the sensor unit to the controller has some resistance, Rwire. If the sensor output were a voltage proportional to pressure, the voltage drop in the line would cause measurement error even if the sensor output were an ideal source of voltage. But, since the data are contained in the current value, Rwire does not affect the accuracy at the controller as long as the sensor acts as an ideal current source. Sensor model Rwire ww I to V Controller converter If you will design design a current-to-voltage converter as shown in the circuit below that will output 5 V when the current signal is 20 mA, what should be the value of the resistor to be connected across the controller to produce the required 5 V?. Answer ohms (round off your answer, no decimal point, no units) Sensor model Rwire Controller ww
Transcribed Image Text:In factory instrumentation, process parameters such as pressure and flow rate are measured, converted to electrical signals, and sent some distance to an electronic controller. The controller then decides what actions should be taken. One of the main concerns in these systems is the physical distance between the sensor and the controll er. An industry standard format for encoding the measurement value is called the 4-20 mA standard, where the parameter range is linearly di stributed from 4 to 20 mA. For example. a 100 psi pressure se nsor would output 4 rnA if the pressure were 0 psi, 20 mA at 100 psi, and 12 mA at 50 psi. But most instrumentation is based on voltages between 0 and 5 V, not on currents. Using the circuit below as a model, design a current-to-voltage converter that will output 5 V when the current signal is 20 mA The wiring from the sensor unit to the controller has some resistance, Rwire. If the sensor output were a voltage proportional to pressure, the voltage drop in the line would cause measurement error even if the sensor output were an ideal source of voltage. But, since the data are contained in the current value, Rwire does not affect the accuracy at the controller as long as the sensor acts as an ideal current source. Sensor model Rwire ww I to V Controller converter If you will design design a current-to-voltage converter as shown in the circuit below that will output 5 V when the current signal is 20 mA, what should be the value of the resistor to be connected across the controller to produce the required 5 V?. Answer ohms (round off your answer, no decimal point, no units) Sensor model Rwire Controller ww
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