Electrical Measurements & Instrumentations Lab
(MS-004)
  • Electrical Variables Measurements Kit
    • Understanding the functional principles of measuring instruments.
    • Explain the difference between deflection and bridge methods.
    • Explain the difference between digital and analog methods.
    • Explain the difference between moving core and moving coil galvanometers.
    • Understanding the functional principles of electrodynamic measuring instruments.
    • Extending measuring ranges for current and voltage measurement.
    • Understanding the principles of power measurement.
    • Measuring effective, apparent and reactive power.
    • Understanding the principles of power factor measurement.
    • Measuring power factors.
    • Introduction to the principle for measuring work.
    • Introduction to the principles. of measuring electrical work.
    • Understanding the principles of frequency measurement.
  • Temperature, Force, Pressure and Torque Measurements Kit
    • Calibration of instrument amplifier
    • Introduction to circuits for temperature measurement
    • Linearization of a Wheatstone bridge
    • Listing possible sources of error in temperature measurements
    • Introduction to the principles and characteristics of various temperature sensors: NTC, Pt 100, KTY, thermocouple
    • Recording the characteristics for various electrical temperature sensors: NTC, Pt 100, KTY, thermocouple
    • Introduction to methods of linearizing non-linear characteristics Introduction to the term piezo-electricity
    • Introduction to the function and characteristics of pressure sensors, piezo-electric, inductive and resistive
    • Recording characteristics for absolute and differential pressure sensors
    • Introduction to the principle of force measurement using strain gauges
    • Introduction to the function and characteristics of strain gauges
    • Recording characteristics for strain gauges on a bending bar and torsion rod
    • Measuring forces on a bending bar and torsion rod.
    • Investigation of the effect of the measuring circuit (full bridge, half bridge, quarter bridge).
  • Displacement / Angle / Speed Measurements Kit
    • Introduction to methods for measuring displacement, angle and speed
    • Analog and digital measuring techniques
    • Explain the operation and characteristics of sensors for displacement, angle and speed measurement
    • Calibration of circuits for measuring displacement by inductive and capacitive means
    • Introduction to the design of inductive and capacitive displacement measurement sensors
    • Experimental derivation of characteristics for inductive and capacitive displacement sensors
    • Introduction to the design and operation of optical encoders for measuring the position of rotating shafts.
    • Introduction to the design of hall sensors.
    • Introduction to methods for measuring displacement, angle and speed
    • Analog and digital measuring techniques
    • Explain the operation and characteristics of sensors for displacement, angle and speed measurement
    • Calibration of circuits for measuring displacement by inductive and capacitive means 
    • Introduction to the design of inductive and capacitive displacement measurement sensors
    • Experimental derivation of characteristics for inductive and capacitive displacement sensors
    • Introduction to the design and operation of optical encoders for measuring the position of rotating shafts.
    • Introduction to the design of hall sensors. Bridges Measurements Kit
    • Distinguishing between deflection and offset methods.
    • Explanation of how bridges are used for measurement.
    • Measuring resistance and impedance using a Wheatstone bridge.
    • Use of Maxwell-Wien bridges.
    • Measuring capacitance using a Wien bridge.
    • Introduction to application of impedance measurement.
    • Carrying out RLC measurements.
    • Knowledge and use of criteria for selecting appropriate measuring range.
  • Electrical measurements & instrumentations lab - (MS - 004)
  • Hard copy user manual

The training kit is based on a group of experimental cards that features different types of sensors and controllable drives to help teach the concept of electrical measurements and their parameters through a wide range of applications namely sensors & instrumentations. The system demonstrates the principles of operation which most electrical measurements devices (sensors) based on. The training system will guide students in learning the theory and practical aspects of basic electrical measurements such as measuring current, voltage, force, torque, speed, temperature , pressure & etc., as well as the use of various instruments.

                                     
  • The training system is a comprehensive solution to teach electrical measurements & instrumentations via a wide range of experimental cards supplied with one or more card holder.
  • The system supports cascaded connection for the card holders by connecting up to three card holders in series. In other words, the output of one card holder is fed as input to the next one.
  • Experimental cards can be connected to the main unit (MS-001) or the power supply unit (MS-002). As well as to any other external powering and measuring devices in the laboratory.
  • Electronic circuits contained in each card are presented by their schematic diagrams and test points to learn about the circuit wiring and components and connect between terminals using safety cables.
  • Each circuit and terminal on the card are labeled for easy recognition and understanding of circuit elements and components also to assure more accurate and safe wiring during experimentation.
  • The system introduces the student to different types of industrial sensors, and how to connect them to measure different electrical measurement parameters.
  • Card Objectives:
    1. Introducing the student to the basics for measuring different ranges of DC current using resistive networks and a galvanometer.
    2. Demonstrating how can this setup be modified for measuring AC current through adding a rectifier.
    3. Constructing circuits for measuring different ranges of DC and AC Voltage.
    4. Providing several resistive, capacitive and inductive loads for building the test load circuits whose parameters are to be measured.
  • Card Objectives:
    1. Implementing a power factor measurement circuit & understanding it’s principle of operation.
    2. comparing between voltage and current phase shift.
    3. Experiencing the effect of passive elements (R, L and C) on the phase shift and the power factor.
    4. Learning about frequency measurement basics and constructing a frequency measurement circuit.
    5. Displaying the frequency via 2 digit 7-segments.
    6. Multi ranges selector to set the maximum frequency
  • Card Objectives:
    1. Experimenting how can the strain gauges be used to measure applied forces on a bending bar
    2. Experiencing the effect of using strain gauges in a bridge configuration for improving accuracy.
    3. Implementing circuits featuring strain gauges for torque measurement of Torsion rod.
    4. Understanding how does the installation of multiple strain gauges on a Torsion rod in a 45 degrees configuration helps to cancel forces in undesired directions.
  • Card Objectives:
    1. Learning how to use Temperature-controlled heater for setting the temperature to be measured.
    2. Introduction to the characteristics and the principle of operation for 6 different types of sensors: NTC, PTC , KTY , PT100 , LM35 and Thermocouple sensor.
    3. Implementing different circuits that are suitable for each sensor to observe their practical behavior during temperature measurement.
    4. Learning about the functionality of thermocouple amplifiers, cold Junction compensator & using them with the thermocouple sensor for temperature measurement.
    5. Determining the different sources of errors in temperature measurements.
  • Card Objectives:
    1. Identifying the difference between absolute pressure sensors and gauge pressure sensor.
    2. Constructing setups using pneumatic
    3. pipes, one of five different pressure sensors in addition to an air syringe for applying pressure and determining the output characteristics for each sensor.
    4. Comparing the measured pressure by the sensors to a reference external device in order to calculate the corresponding error.
    5. Experimenting two Differential pressure sensors and how ‘re they used to measure the pressure difference between 2 channels.
    6. Interfacing the output voltages from the pressure sensors to the amplifiers on the universal amplifier card in order to increase the full-scale output.
  • Card Objectives:
    1. Introduction to the hall effect sensor’s characteristics and working principle of operation.
    2. Determining the position (Clockwise/Anti-clockwise) and speed (rpm) of a DC motor practically using Hall effect and optical sensors.
    3. Examining the difference practically between the analog and the digital techniques for measuring the speed using hall effect sensor.
  • Card Objectives:
    1. Introduction to the design of inductive displacement measurement sensor (Linear Variable differential Transformer).
    2. Conducting experiments to determine the I/O characteristics of LVDT.
    3. Determining the linear range of operation of LVDT.
  • Card Objectives:
    1. Understanding the parameters affecting the capacitance value of a variable plate capacitor.
    2. Constructing a picofarad capacitance measurement circuit using an inverting amplifier and a voltage follower for measuring the capacitance of the variable plate capacitor that corresponds to the measured displacement.
  • Card Objectives:
    1. Introducing the structure of the resolver and the principles of operation of it’s primary and secondary coils.
    2. Constructing circuits for the generation and the amplification of the resolver’s excitation signal.
    3. Understanding how does the feedback signal from the secondary coils can be used to calculate the resolver’s model angle and position.
    4. Using the signal conditioning circuits learn how to convert the secondary coil signals to suitable range for the practical ADCs
  • Card Objectives:
    1. Understanding the difference between deflection type instruments and Null/Zero type instruments.
    2. Learning about the construction of Wheatstone bridge, Wien’s bridge and Maxwell-Wien’s bridge in addition to analyzing each bridge theoretically through the basic electric circuit’s rules.
    3. Understanding each bridge’s parametric equations and how to use them to measure resistance.
    4. Practically achieving the Balance condition of each bridge in order to verify the theoretical equations and to measure unknown resistance, capacitance and inductance.
  • Card Objectives:
    1. Constructing a practical Automatic Balancing bridge for measuring inductance, capacitance and resistance.
    2. Extracting the design equations of the Automatic balancing bridge for the calculation of the impedance.
    3. Understanding how does the circuit change when selecting different measurement range or measurement type in addition to the criterial for selecting appropriate measurement range.
    4. Using the circuit to measure various unknown passive elements (Resistors, Inductors and capacitors).