What is the need for gas sensing? What functions do gas sensors perform? Discuss the mode of operation and characteristics of each of the following types of gas sensor: (a) calorimetric sensor, (b)...

What is the need for gas sensing? What functions do gas sensors perform?

Discuss the mode of operation and characteristics of each of the following types of

gas sensor: (a) calorimetric sensor, (b) paper tape sensor, (c) color change personnel