Plastic Process Instrumentation and Process Control — Winter 2019

1.Calibration is the process of _________by______ of the correct value of each scale reading on a meter. 2. The average deviation is an ___________ of the instruments. 3.Define: Precision

Explain basic elements of closed loop system.

Explain Radiation pyrometer with neat sketch.

Explain open loop control system with neat diagram.

Explain Seeback effect & thermocouple.

With the neat sketch and brief explain contact and noncontact method of temperature measurement

Explain different types of Manometers

Explain thermistors

Write a short note on static characteristics.

Explain construction, working, advantages & disadvantages of LVDT.

List different types of pressure transducers.

Explain sources of error.

Explain diaphragm pressure transducers with neat diagram.

Explain Ctype bourdon tube transducer.

Explain derivative controllers.

Explain Capacitive type pressure transducer

Describe piezoelectric pressure transducer.

Explain open loop transfer function

Explain Strain gauge pressure transducers with neat diagram.

Explain CASCADE control system.

Explain closed loop transfer function.

Describe the advantages and disadvantages of filled system thermometer with neat sketch.

Define Range, Dead zone & Accuracy.

Define Calibration & explain general steps to perform it.

Explain the total injection molding process control.