Briefly describe:a)The differences between the RTD and Thermistor.

Answered: Briefly describe! a) The differences…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Briefly describe:
a)
The differences between the RTD and Thermistor.

Expert Solution

Step 1

RTD-An RTD sensing element consists of a wire coil or deposited film of pure metal. The element’s resistance increases with temperature in a known and repeatable manner. RTDs exhibit excellent accuracy over a wide temperature range and represent the fastest growing segment among industrial temperature sensor

The advantage of RTD are as follows

Temperature range: RTD models cover temperatures from -260 to 650°C.
Sensitivity: The voltage drop across an RTD provides a much larger output than a thermocouple.
Linearity: Platinum and copper RTDs produce a more linear response than thermocouples or thermistors. RTD non-linearities can be corrected through proper design of resistive bridge networks.
Low system cost: RTDs use ordinary copper extension leads and require no cold junction compensation.

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