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Which of the following temperature measuring devices is suitable for measuring temperatures ranging from 900°C to 4000°C?  

Which of the following temperature measuring devices is suitable for measuring temperatures ranging from 900°C to 4000°C?   Correct Answer Optical pyrometer

Explanation:

Thermometer:  It is a device used to measure temperature.

Various types of thermometer, the material used in them and their range of measuring temperature is mentioned in the table below,

Thermometer

Material Used

Range of Temperature

Liquid Thermometer

Mercury / Alcohol

-30° C to -3000 ° C

Clinical Thermometer

Mercury

94° F to 1200° F

Gas Thermometer

Hydrogen / Helium / Nitrogen

-200° C to -5000° C / -268 ° C to -1000° C / -200 ° C to -1200 ° C.

Platinum-Resistance Thermometer

Platinum

-200 ° C to -12000 ° C

Thermocouple Thermometer

Platinum Silicon Etc. (More than one material used)

-200° C to -12000° C

Total Radiation Pyrometer

Many Insulated materials are used

800°C to ……. (according to need)

Optical Pyrometer

 

800° C to 4000° C

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