EI 1401 DESIGN PROJECT LABORATORY 0 0 3 100
1. Design and implementation of instrumentation amplifier.
2. Design and implementation of active filter.
3. Design and implementation of V/I and I/V converters.
4. Design and implementation of cold – junction compensation circuit for thermocouple.
5. Design and implementation of signal conditioning circuit for RTD.
6. Design of orifice plate and rotameter.
7. Design of control valve (sizing and flow – lift characteristic)
8. Design of PID controller (using operational amplifier and microprocessor)
9. Piping and Instrumentation Diagram – case study.
10. Preparation of documentation of instrumentation project (process flow sheet, instrument index sheet and instrument specifications sheet).
P = 45 Total = 45
Detailed Syllabus
1. Design and implementation of instrumentation amplifiers
Aim
To design an instrumentation amplifier based on the three operational amplifier
configuration with a differential gain of 100.
Exercise
1. Develop the instrumentation amplifier with differential gain of 100 and draw the input Vs output characteristics of the three operational amplifier based instrumentation amplifier and make a comment on the response.
2. Compare the performance characteristics of Instrumentation amplifiers with commercial Monolithic Instrumentation amplifier.
Equipment
1. Dual power supply – 1 No
2. Digital Multimeters – 1 No
3. Resistors – 10 No
4. Operational Amplifiers – 4 No
5. Any commercial Monolithic Instrumentation amplifier - 2 No
2. Design and Implementation of Active filters
Aim
To design an active first order / second order Butterworth type Low – Pass /
High Pass / Band-pass filter with the following specifications.
Low pass filter : Cut – off frequency : 1 KHz
High pass filter : Cut – off frequency : 1 KHz
Band pass filter : Cut off frequency : 1 KHz < fc < 5 KHz
Exercise
1. Develop an active Butterworth first order (or) second order low pass and / or high – pass, band pass filter and determine experimentally the frequency response.
Equipment
1. Dual power supply - 1 No
2. Operational amplifiers - 2 Nos
3. Resistors - 10 Nos
4. Capacitors - 10 Nos
5. Signal generator - 1 No
6. C.R.O - 1 No
3. Design and Implementation of V/I and I/V converters
Aim
To design a voltage to current converter and a current to voltage converter and
verify the characteristics experimentally.
Objectives
1. To design a voltage to current converter (grounded load) with the following specification
Input voltage range : (0 – 5) V
Output current range : (4-20) mA (should be independent of load)
2. To design a current to voltage converter with the following specification
Input current range : (4-20) mA
Output voltage range : (0-5) V
Exercise
1. Determine experimentally the characteristics of voltage and current converter an plot output current versus input voltage and comment on the response.
2. Determine experimentally the characteristics of current to voltage converter and plot output voltageVs input current and comment on the response.
Equipment
1. Resistors - 10 No
2. Operational amplifiers - 5 No
3. Transistor (NPN / PNP) - 2 No
4. Dual power supply - 1 No
5. Digital Multimeters - 2 No
6. Loop analyzer - 1 No
4. Design and Implementation of cold function compensation circuit for thermocouple
Aim
To design a cold – junction compensation circuit for thermocouple.
Objectives
To design a automatic reference correction circuit for thermocouple.(A solid –
state temperature sensor or RTD can be used for the cold function measurement)
Exercise
1. Develop the circuit for reference junction compensation.
2. Keep the hot junction temperature at say 4000C.
3. Vary the cold – junction temperature from 30 – 900C and observe the output voltage for with and without cold-junction compensation.
4. Plot the output voltage versus cold-junction temperature and comment on the response.
Equipment
1. Thermocouple - 1 Nos
2. Operational amplifier - 3 Nos
3. AD – 590 or RTD - 1 Nos
4. Resistors - 10 Nos
5. Dual power supply - 1 No
6. Multimeters - 1 No
5. Design and implementation of signal conditioning circuit for RTD
Aim
To design a signal conditioning circuit to RTD. The specification are as follows
Temperature Range : 300 C – 1000C (Approximately)
Output voltage : 0 – 5 V DC
Sensor : RTD (Pt 100)
Current through RTD : Not to exceed 10mA
Equipment
1. RTD (Pt 100) - 1 No
2. Resistors - ?
3. Operational amplifiers - 4 Nos
3. Dual power supply - 1 No
4. Temperature bath - 1 No
5. Multimeter - 1 No
6. Trim Pot - 3 Nos
Exercise
1. Develop the signal conditioning circuit and plot the output voltage versus temperature and comment on the linearity.