Course description
In Principles and Methods of Temperature Measurement, you'll learn ...
- Various types of temperature sensors
- The principle of operation of thermocouples (Peltier effect, Thompson effect and Seebeck effect)
- The basic construction of a thermocouple including materials used
- The three laws of thermocouples (law of intermediate metals, law of intermediate temperatures and law of additive voltages)
Overview
Credit: 2 PDH
Length: 35 pages
Temperature is a principle parameter that needs to be monitored and controlled in most engineering applications such as heating, cooling, drying and storage. Temperature can be measured via a diverse array of sensors. All of them infer temperature by sensing some change in a physical characteristic be it a thermal expansion, thermoelectricity, electrical resistance or thermal radiation. There are four basic types of temperature measuring devices, each working on a different principle: Mechanical (liquid-in-glass thermometers, bimetallic strips, bulb and capillary, pressure type etc.); Thermocouples; Thermo-resistive (RTDs and thermistors) and Radiative (infrared and optical pyrometers).
Each of these will be discussed in this course. The course is written in user friendly language and the theoretical equations are kept to a minimum. The basic aspects are discussed wherever deemed fit.
This course is aimed at electrical, instrumentation and control engineers, energy auditors, O & M professionals, contractors, estimators, facility managers and general audience.
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Certificate of Completion
You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 15 questions. PDH credits are not awarded until the course is completed and quiz is passed.
Training content
This course teaches the following specific knowledge and skills:
- Various types of temperature sensors
- The principle of operation of thermocouples (Peltier effect, Thompson effect and Seebeck effect)
- The basic construction of a thermocouple including materials used
- The three laws of thermocouples (law of intermediate metals, law of intermediate temperatures and law of additive voltages)
- The difference between grounded, ungrounded and exposed junctions
- The basic principle and construction of RTD's and Thermistors;
- The difference between the two main types of thermistors i.e. positive; temperature coefficient (PTC) and negative temperature coefficient (NTC)
- How RTD resistance varies for increases and decreases of temperatures using bridge circuits
- Basic principles of radiative temperature measurement including infrared and optical pyrometers
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