Lecture 8 - What are the 9 Specifications of Sensors (Extraction from Main Set)

Question 1

• Accuracy:

Answer 1

Error between the result of a measurement and the true value being measured.

Question 2

• Resolution:

Answer 2

The smallest increment of measure that a device can make.

Question 3

• Sensitivity:

Answer 3

The ratio between the change in the output signal to a small change in input physical signal. Slope of the input-output fit line.

Question 4

• Repeatability/Precision:

Answer 4

The ability of the sensor to output the same value for the same input over several trials.

Question 5

• Dynamic Range:

Answer 5

The ratio of maximum recordable input amplitude to minimum input amplitude, i.e. D.R. = 20 log (Max. Input Ampl./Min. Input Ampl.) dB

Question 6

• Linearity:

Answer 6

The deviation of the output from a best-fit straight line for a given range of the sensor

Question 7

• Transfer Function (Frequency Response):

Answer 7

The relationship between physical input signal and electrical output signal, which may constitute a complete description of the sensor characteristics.

Question 8

• Bandwidth:

Answer 8

The frequency range between the lower and upper cutoff frequencies, within which the sensor transfer function is constant gain or linear.

Question 9

• Noise:

Answer 9

Random fluctuation in the value of input that causes random fluctuation in the output value.

Question 10

What are the 9 specifications of Sensors?

Answer 10

Accuracy
Resolution
Sensitivity
Precision
Dynamic range
Linearity
Transger Function
Bandwidth Noise