Mechanical devices liquid in glass thermometers bimetallic strips bulb capillary pressure type etc 2.
Temperature measuring devices ppt.
The main advantage of this device is it does not use any power source for their operation.
Radiative infrared and optical pyrometers.
So that we can easily use it to measure high temperatures.
This device can measure temperature from 80 o c to 600 o c.
Avishek kumar 13 ei 08 2.
Resistance temperature relationship of metals.
To meet this wide array of needs the process controls industry has developed a large number of sensors and devices to handle this demand.
Temperature measurement presented by.
Definition temperature is the degree of sensible heat or cold expressed in terms of a specific scale.
Temperature measurement 1 0 introduction temperature measurement in today s industrial environment encompasses a wide variety of needs and applications.
Accurate temperature measurement devices are critical for ensuring the safety of meat products.
Introduction temperature heat scale glass thermometer bi metallic thermometer rtd thermocouple thermistor ic sensor how to choose 3.
Various units of temperature measurement c degrees celsius or centigrade f degrees fahrenheit k kelvin r rankine relationship between different units c f 32 1 8 f 1 8 x c 32 k c 273 15 r f 459 67 conversion tables or software can be utilized to facilitate with converting between these units.
But these are not so accurate like electrical devices such as thermocouple.
Temperature measurement devices ppt.
Mechanical temperature measuring devices principle of operation a change in temperature causes some kind of mechanical motion typically due to the fact that most materials expand with a rise in temperature.
In today s presentation of temperature measuring instruments we will discuss some of the keypoints and types of thermometers used for temperature measurement moreover we are highlighting the working principles of the instruments and how they are different from each other.
Calibration of temperature measurement devices is one of the most important verification activities a meat or poultry processor can perform.
Selection and maintenance of temperature measurement devices kevin keener ph d p e.
Common rtd sensing elements constructed of platinum copper or nickel have a repeatable resistance versus temperature relationship r vs t and operating temperature range the r vs t relationship is defined as the amount of resistance change of the sensor per degree of temperature change.
Temperature measurement ppt 1.
The relative change in resistance temperature coefficient.
There are four basic types of temperature measuring devices each of which uses a different principle.
