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Course overview
This course covers measurement systems from fundamental principles of error and accuracy through sensors, transducers, signal conditioning, and data acquisition. It progresses from basic measurement concepts to practical instrument design and calibration. The course includes analysis of electrical and electronic measuring instruments as covered in B.Tech ECE syllabi and GATE. After completing it, students can analyze measurement errors, select appropriate sensors for a given physical quantity, and design signal conditioning circuits for transducer outputs.
Details
Target audience: Third-year B.Tech ECE students studying Measurement and Instrumentation, and those preparing for GATE EC.
Duration: 9 to 11 hours
Prerequisites
- Basic circuit theory and op-amp fundamentals
- Basic statistics and probability at B.Tech level
- Semiconductor devices: diode and transistor operation
Learning outcomes
- Calculate static characteristics such as sensitivity, linearity error, and hysteresis for a given instrument
- Apply statistical methods to estimate uncertainty and confidence intervals in measurement data
- Select and analyze resistive, capacitive, and piezoelectric transducers for specific physical quantities
- Design an instrumentation amplifier circuit with specified CMRR and gain for a bridge sensor
- Interpret CRO Lissajous figures to determine frequency ratio and phase difference
- Solve GATE-level problems on PMMC instruments, bridge circuits, and ADC resolution
Modules
Module 1: Measurement Fundamentals
Topics
- Static and dynamic characteristics of instruments
- Types of errors: gross, systematic, and random
- Accuracy, precision, resolution, and sensitivity
- Statistical analysis of measurement data
- Standards and calibration hierarchy
Article slugs
instrument-static-characteristicsmeasurement-errors-typesaccuracy-precision-resolutionmeasurement-statistics
Lab slug: measurement-error-analysis-lab
Module 2: Sensors and Transducers
Topics
- Resistive sensors: strain gauge, RTD, and thermistor
- Capacitive and inductive transducers
- Piezoelectric and Hall effect sensors
- Temperature measurement: thermocouple and pyrometer
- Displacement and pressure sensors
Article slugs
strain-gauge-wheatstone-bridgertd-thermistor-temperaturecapacitive-inductive-transducersthermocouple-pyrometer
Lab slug: sensor-characterization-lab
Module 3: Signal Conditioning
Topics
- Wheatstone bridge and bridge amplifiers
- Instrumentation amplifier design and CMRR
- Filtering: low-pass, high-pass, and band-pass for sensors
- Sample and hold circuits
- Analog to digital conversion for measurement
Article slugs
instrumentation-amplifier-cmrrwheatstone-bridge-amplifieradc-measurement-applicationssample-hold-circuits
Lab slug: signal-conditioning-lab
Module 4: Electrical Instruments and DAQ
Topics
- PMMC, moving iron, and dynamometer instruments
- Digital multimeters and oscilloscope operation
- CRO measurements: frequency, phase, and Lissajous figures
- Data acquisition systems and virtual instrumentation
- GATE-level problems on instruments and errors
Article slugs
pmmc-moving-iron-instrumentscro-measurements-lissajousdigital-multimeter-operationdata-acquisition-systems
Lab slug: daq-virtual-instrumentation-lab