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Questions and Answers
Sensitivity of a measurement system refers to the ability of the instrument to respond to changes in the measured quantity.
Sensitivity of a measurement system refers to the ability of the instrument to respond to changes in the measured quantity.
True (A)
The sensitivity of digital sensors is unrelated to the resolution.
The sensitivity of digital sensors is unrelated to the resolution.
False (B)
A sensor with truly linear behavior has a variable sensitivity over the entire input range.
A sensor with truly linear behavior has a variable sensitivity over the entire input range.
False (B)
Accuracy is a measure of how far the output reading of the instrument is from the correct value.
Accuracy is a measure of how far the output reading of the instrument is from the correct value.
Bias errors are classified as random errors in measurements.
Bias errors are classified as random errors in measurements.
Precision implies agreement between successive readings and closeness to the true value.
Precision implies agreement between successive readings and closeness to the true value.
Repeatability refers to the precision of a set of measurements taken over a long time interval.
Repeatability refers to the precision of a set of measurements taken over a long time interval.
Reproducibility and precision are not closely related terms.
Reproducibility and precision are not closely related terms.
The capacity of a measuring instrument to give different readings when repetitively measuring the same quantity under the same prescribed conditions is known as precision.
The capacity of a measuring instrument to give different readings when repetitively measuring the same quantity under the same prescribed conditions is known as precision.
Calibration errors are examples of precision errors in measurements.
Calibration errors are examples of precision errors in measurements.
The static characteristics of a sensor describe its transient properties.
The static characteristics of a sensor describe its transient properties.
The resolution of a sensor is the difference between the maximum and minimum value of the sensed parameter.
The resolution of a sensor is the difference between the maximum and minimum value of the sensed parameter.
Sensitivity is the ability to reproduce a measurement with consistent accuracy.
Sensitivity is the ability to reproduce a measurement with consistent accuracy.
Deadband refers to the range in which the sensor performs as specified.
Deadband refers to the range in which the sensor performs as specified.
The response time of a sensor is the time lag between the input and output.
The response time of a sensor is the time lag between the input and output.
Nonlinearity in a sensor represents the percentage of deviation from the best-fit linear calibration curve.
Nonlinearity in a sensor represents the percentage of deviation from the best-fit linear calibration curve.
The operating temperature of a sensor does not affect its performance.
The operating temperature of a sensor does not affect its performance.
Span and dynamic range of a sensor refer to the difference between the maximum and minimum value of the sensed parameter.
Span and dynamic range of a sensor refer to the difference between the maximum and minimum value of the sensed parameter.
Hysteresis and backlash are part of dynamic characteristics of a sensor.
Hysteresis and backlash are part of dynamic characteristics of a sensor.
The signal-to-noise ratio of a sensor is the ratio between the magnitudes of the signal and the noise at the input.
The signal-to-noise ratio of a sensor is the ratio between the magnitudes of the signal and the noise at the input.
Study Notes
Measurement System Characteristics
- Sensitivity of a measurement system is the ability to respond to changes in the measured quantity.
- Sensitivity of digital sensors is unrelated to resolution.
- A sensor with truly linear behavior has a variable sensitivity over the entire input range.
Accuracy and Errors
- Accuracy measures how far the output reading is from the correct value.
- Bias errors are classified as random errors in measurements.
- Calibration errors are examples of precision errors in measurements.
Precision and Repeatability
- Precision implies agreement between successive readings and closeness to the true value.
- Repeatability refers to the precision of a set of measurements taken over a long time interval.
- Precision is the capacity of a measuring instrument to give different readings when repetitively measuring the same quantity under the same conditions.
Sensor Characteristics
- Resolution of a sensor is the difference between the maximum and minimum value of the sensed parameter.
- Deadband refers to the range in which the sensor performs as specified.
- Response time of a sensor is the time lag between the input and output.
- Nonlinearity in a sensor represents the percentage of deviation from the best-fit linear calibration curve.
Sensor Performance
- Operating temperature of a sensor does not affect its performance.
- Span and dynamic range of a sensor refer to the difference between the maximum and minimum value of the sensed parameter.
- Hysteresis and backlash are part of dynamic characteristics of a sensor.
- Signal-to-noise ratio of a sensor is the ratio between the magnitudes of the signal and the noise at the input.
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Description
Test your knowledge on the characteristics of sensors including static and dynamic properties such as sensitivity, offset, span, saturation, hysteresis, and nonlinearity. Explore the behavior of sensors in steady state and transient conditions.
