Dynamic Response of Systems

Question 1

What is the dynamic characteristics of a measured system

Answer 1

The difference between the time a measured value changes and the time the instrument output attains a steady value in response

Question 2

What is a first order instrument

Answer 2

Any instrument whose behaviour can be modelled by a first order differential equation

Question 3

What is the time constant

Answer 3

The time taken form the application of a measured value to reach 63% of its final value

Question 4

What is a second order instrument

Answer 4

Any instrument that can be modelled by a second order differential equation