Pyrometre

1. PYROMETRE .

2. INTRODUCTION ‘ Pyro’ is the ‘Greek’ word which means fire. Pyrometer is touch less type (controlled type) temperature measuring device. Where radiation energy of the hot body is used for measurement of temperature by comparison of colour.

3. . . A sailor checking the temperature of a ventilation system e.g :

4. TYPES OF PYROMETER There are two types of Pyrometer. OPTICAL PYROMETER RADIATION PYROMETER

5. . . Radiation Pyrometer Optical Pyrometer

6. OPTICAL PYROMETER The PYRO optical pyrometer temperature sensor for non contact high temperature measurement operates by allowing the operator to compare the intensity .   It is based upon the fact that all black bodies do have the same incandescence color at a given temperature. Optical Pyrometer is works on principle of matching the brightness of hot object.

7. Compare diagram

8. CONSTRUCTION It consist of focusing lense which radiate energy Absorption screen in order to absorb some radiate energy. Filament which is used for adjustment of brightness rate Filter for filtering the target and filament colour that should be easily comparable in term of brightness .

9. . Diagram Optical pyrometer

10. Working Optical Pyrometers works on the basic principle of using the human eye to match the brightness of the hot object to the brightness of a calibrated lamp filament inside the instrument. The optical system contains filters that restrict the wavelength-sensivity of h devices to a narrow wavelength band around 0.65 to 0.66 microns. Other reduce the intensity so that one instrument can have a relatively wide temperature range capability.

11. ADVANTAGES FLEXIBLE P ORTABLE EASY TO USE LIGHT WEIGHT CAN MONITOR MOVEABLE OBJECTS NONO CONTACT TYPE ACCURATE

12. DISADVANTAGES EXPENSIVE HUMAN ERRORS CONTINUOUS MONITORING CONTROLLING PURPOSE NOT USEFUL FOR MEASURING TEMP OF LEAR GAS AT HIGH TEMP, FILAMENT ERODES FREQUENTLY

13. APPLICATION The PYRO MicroTherm radiation pyrometer is ideal for many small target laboratory and industrial applications.  It is extremely useful when measuring small targets that do not fill the entire field of view. Lamp Filament Wire Cathodes Wire Drawing Crystal Growth Calibration Standard  

14. . 3 Thank You !