Temperature Measuring Devices Ppt

The relative change in resistance temperature coefficient.

Temperature measuring devices ppt.

This device can measure temperature from 80 o c to 600 o c. But these are not so accurate like electrical devices such as thermocouple. Introduction temperature heat scale glass thermometer bi metallic thermometer rtd thermocouple thermistor ic sensor how to choose 3. Mechanical thermometers can be constructed which use liquids solids or even gases as the temperature sensitive material.

Resistance temperature relationship of metals. Several scales and units exist for measuring temperature the most common being celsius fahrenheit and especially in science kelvin. So that we can easily use it to measure high temperatures. 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. Temperature measurement devices ppt. 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. 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.

Selection and maintenance of temperature measurement devices kevin keener ph d p e. Avishek kumar 13 ei 08 2. The main advantage of this device is it does not use any power source for their operation. There are four basic types of temperature measuring devices each of which uses a different principle.

Mechanical devices liquid in glass thermometers bimetallic strips bulb capillary pressure type etc 2. Temperature measurement ppt 1. Calibration of temperature measurement devices is one of the most important verification activities a meat or poultry processor can perform. Accurate temperature measurement devices are critical for ensuring the safety of meat products.

Temperature measurement 1 0 introduction temperature measurement in today s industrial environment encompasses a wide variety of needs and applications. 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. Radiative infrared and optical pyrometers.