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1 b It has been determined that the dynamic behavior of a pressure sensing system can be expressed by a first-order transfer function that relates the measured pressure value (Pm) to the actual pressure (P) value: Pm (s) Kp P'(s) TS + 1 = The unit of Pm' and P' is lb/in^2. The process gain (steady-state gain) of the system and the time constant are 30 seconds. The alarm sounds when the measured pressure value reaches 45 lb/in^2. The process is initially calm. Calculate when the alarm will sound if the actual pressure suddenly increases from 35 lb/in^2 to 50 lb/in'^2.

1 b It has been determined that the dynamic behavior of a pressure sensing system can be expressed by a first-order transfer function that relates the measured pressure value (Pm) to the actual pressure (P) value: Pm (s) Kp P'(s) TS + 1 = The unit of Pm' and P' is lb/in^2. The process gain (steady-state gain) of the system and the time constant are 30 seconds. The alarm sounds when the measured pressure value reaches 45 lb/in^2. The process is initially calm. Calculate when the alarm will sound if the actual pressure suddenly increases from 35 lb/in^2 to 50 lb/in'^2.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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1 b It has been determined that the dynamic behavior of a pressure sensing system can be expressed by a first-order transfer function that relates the measured pressure value (Pm) to the actual pressure (P) value: Pm (s) Kp P'(s) TS + 1 = The unit of Pm' and P' is lb/in^2. The process gain (steady-state gain) of the system and the time constant are 30 seconds. The alarm sounds when the measured pressure value reaches 45 lb/in^2. The process is initially calm. Calculate when the alarm will sound if the actual pressure suddenly increases from 35 lb/in^2 to 50 lb/in'^2.
Transcribed Image Text:1 b It has been determined that the dynamic behavior of a pressure sensing system can be expressed by a first-order transfer function that relates the measured pressure value (Pm) to the actual pressure (P) value: Pm (s) Kp P'(s) TS + 1 = The unit of Pm' and P' is lb/in^2. The process gain (steady-state gain) of the system and the time constant are 30 seconds. The alarm sounds when the measured pressure value reaches 45 lb/in^2. The process is initially calm. Calculate when the alarm will sound if the actual pressure suddenly increases from 35 lb/in^2 to 50 lb/in'^2.
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