Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Thermistors and Resistance Temperature Detectors (RTDs)
Share
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Temperature Measurement > Thermistors and Resistance Temperature Detectors (RTDs)

Thermistors and Resistance Temperature Detectors (RTDs)

Last updated: August 18, 2018 8:05 pm
Editorial Staff
Temperature Measurement
No Comments
Share
1 Min Read
SHARE

One of the simplest classes of temperature sensor is one where temperature effects a change in electrical resistance. With this type of primary sensing element, a simple ohmmeter is able to function as a thermometer, interpreting the resistance as a temperature measurement:

Thermistors and Resistance Temperature Detectors (RTDs)

Thermistors are devices made of metal oxide which either increase in resistance with increasing temperature (a positive temperature coefficient) or decrease in resistance with increasing temperature (a negative temperature coefficient).

RTDs are devices made of pure metal wire (usually platinum or copper) which always increase in resistance with increasing temperature. The major difference between thermistors and RTDs is linearity: thermistors are highly sensitive and nonlinear, whereas RTDs are relatively insensitive but very linear. For this reason, thermistors are typically used where high accuracy is unimportant. Many consumer-grade devices use thermistors for temperature sensors.

Credits : Tony R. Kuphaldt – Creative Commons Attribution 4.0 License

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Liquid In Glass Thermometer Principle
What is RTD Accuracy ?
Temperature Transmitter Preventive Maintenance
Basics of Temperature Switch
Thermocouple Extension Wires
Thermistor Working Principle
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Free Download Thermocouple Calculator
Thermocouple Details
Peltier Effect Theory
Temperature Sensors Interview Questions
What are the Thermocouple Applications?
Seebeck Effect Theory
Multiple Position Calibration of Temperature Chamber
Thermocouple Construction

Keep Learning

RTD

Why 4 wire RTD Measurement Accuracy is better than 2 and 3 wire RTD?

Temperature Scanner

Applications of Temperature Scanner

Temperature Controller

What is a Temperature Controller? – How to Choose?

Pyrometer

Pyrometers Handbook

Thermocouples Green Rot Effect

Thermocouples Green Rot Effect

Resistance Temperature Detectors Errors

Resistance Temperature Detectors (RTD) Sources of Error

What is a Thermopile ?

How to Install Thermowell on an Elbow?

Learn More

Industrial Automation and Control Interview Questions

Industrial Automation and Control Interview Questions

Finned Heater Leaks Sealed

Finned Tube Steam Leaks – Root Cause Analysis

Transmitter Calibration Range of a Vessel Level

Transmitter Calibration Range of a Vessel Level

Innovative Segment Orifice

Pitot-tube Replaced with Innovative Segment Orifice Plate

Induction Motor Interview Questions Answers

Electrical Measurements and Instrumentation Objective Questions & Answers

Card Failures in Automation Panels

Automation Panel Electronic Cards Failure investigation

Instrumentation Engineering Materials Test

Instrumentation Engineering Materials Test

Architecture of Allen Bradley PLC

Architecture of Allen Bradley PLC

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?