Accuracy and Standard of the M.C and M.I Instruments
Accuracy
It is the closeness with which an instrument reading
approaches the true value of the quantity being measured. Thus accuracy of a
measurement means conformity to truth.
Accuracy in case of M.C Instrument: The accuracy of M.C instruments is of
the order of generally 2% of full scale deflection because the torque to weight
ratio is high in case of M.C instruments. These instruments are very accurate
if design properly.
Accuracy in case of M.I Instruments: M.I instruments are capable of giving
an accuracy within limits of both precision and industrial grades. Modern well
designed portable M.I instruments have a D.C error of 2% or less. The initial
accuracy of high grade instruments is 0.75% for