Posted inEngineering Metrology & Measurement
Instrumental error
1) Error of a physical measure: It is the difference between the nominal value and the…
Posted inEngineering Metrology & Measurement
Performance of instruments
All instrumentation systems are characterized by the system characteristics or system response. It consists of…
Posted inEngineering Metrology & Measurement
Measuring instruments
A broad classification of the instruments based on the application mode of operation, manner of…
Posted inEngineering Metrology & Measurement
Classification of Standards
1. Line & End Standards: In the Line standard, the length is the distance between the…
Posted inEngineering Metrology & Measurement
Derived SI units
1) For Frequency: Hertz (1 Hz = 1 cycle per second) 2) For Force: Newton (1 N…
Posted inEngineering Metrology & Measurement
Supplementary SI units
1) For Plane angle: Radian (rad) 2) For Solid angle: Steradian (sr)
Posted inEngineering Metrology & Measurement
Basic units in SI system
1) For Length : Metre (m) which is equal to 1650763.73 wavelengths in vacuum of the…
Posted inEngineering Metrology & Measurement
Generalized measuring system
The generalized measuring systems consist of the following common elements: 1. Primary sensing element 2.…
Posted inEngineering Metrology & Measurement
Methods of Measurement
1) Method of direct measurement: The value of the quantity to be measured is obtained directly…
Posted inEngineering Metrology & Measurement
Need for measurement
To ensure that the part to be measured conforms to the established standard. To…