Wednesday, June 27, 2012
EI2304 INDUSTRIAL INSTRUMENTATION LABORATORY L T P C
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The training gained by the student in this area will be of immerse help and ease for him in any industrial establishment.
1. Discharge coefficient of orifice plate
2. Calibration of pressure gauge
3. Torque measurement
4. Viscosity measurement
5. Vacuum pressure measurement
6. Level measurement using d/p transmitter
7. UV – Visible spectrophotometer
8. IR spectrophotometer
9. pH meter standardization and measurement of pH values of solutions
10. Measurements of conductivity of test solutions.
1. DISCHARGE COEFFICIENT OF ORIFICE PLATE AIM
To find the discharge co-efficient of orifice plate.
Find the discharge co-efficient Cd.
TOTAL : 45 PERIODS
1. Open the outlet value completely and switch on the motor.
2. Now open the inlet value.
3. With a particular operating a the inlet value note the reading on two time of manometer and computer the value of x.
4. Compute the actual discharge using the collecting task and stop watch and the theoretical discharge.
5. Now change the opening of the inlet values and note the reading of monometer and compare and discharge.
6. Calculate the value of Cd.
1. Orifice meter – 1 No
2 Stopwatch – 1 No
2. CALIBRATION OF PRESSURE GAUGE AIM
To calibrate the given pressure gauge using dead weight tester.
Calibrate the pressure gauge and discuss the graphs (i) Actual pressure Vs true pressure (ii) Actual pressure Vs Error
1. A standard weight of 0.5 Kg/cm2 is kept on the piston plate form.
2. Pressure is applied to the chamber containing oil by rotating the hand operated wheel in
the anti clock wise direction.
3. This is continued until piston carrying weight shows a list.
4. In the movement the pressure acts equally on the piston as well as on the gauge.
5. The reading shown by the gauge is taken as actual reading.
6. The same procedure is repeated for increasing weights on the platform in steps of 0.5
Kg/cm2 and actual reading shown by the gauge is noted down.
7. Graphs are drawn between
i. Actual pressure Vs true pressure. ii. Actual pressure Vs Error.
1. Dead weight tester - 1 No
2. Pressure gauge and standard weight - 1 No
3. TORQUE MEASUREMENT AIM
To determine the due to dead weights using strain torsion meter and to determine the unknown weight.
Find the % error of the torque measurement.
1. Connect the strain gauge torsion meter to the power supply.
2. Now change or hanger is fixed to the shift, the torque is to subject.
3. Now keep the dead weights in the hanger gently.
4. Note the indicated torque value from the strain gauge torsion indicator.
5. Repeat the same for different weights (say 1Kg, 2Kg,) and tabulate the readings.
6. Now repeat the same procedure for the given unknown weight.
7. The unknown weight is interpreted from graph.
1. Strain gauge torsion meter – 1 No
2. Dead weight – 1 No
4. MEASUREMENT OF VISCOSITY USING SAYBOLT VISCOMETER AIM
To measure the viscosity using saybolt viscometer.
Measure the viscosity using saybolt viscometer and draw the graph between voltage on x- axis and dynamo viscosity on y-axis.
1. Viscosity determination shall be done in room free from dust rapid changes in temperature.
2. The oil in the cup and allow it to drain.
3. Pour oil in the cup and allow it to drain.
4. The cark stopper should be installed at the lower and of thetube.
5. The cark should be tight enough to prevent escape of oil.
6. Since the oil should be stirred well until a constant temperature is maintained both in the water and the oil.
7. After thermal equilibrium has been obtained.
8. Remove the thermometer from the oil bath.
9. 60ml of flask should be kept in position to collect oil from the tube.
10. Open the cork and start the stopwatch.
11. Record the time for the fall of 60mm of oil.
12. Vary the temperature of oil using temperature controller record the actual temperature.
13. Draw the graph between voltage on x-axis and dynamo viscosity on y-axis.
– 1 No
– 1 No
– 1 No
– 1 No
5. VACUUM PRESSURE MEASUREMENT
To study the vacuum pressure gauge setup and measure the unknown vacuum pressure.
i. Maintain the vacuum pressure in the cylinderand switch on the vacuum pressure transmitter setup.
ii. Measure the output voltage in Volts for the corresponding vacuum ppressure in mbars.
iii. Vary the vacuum pressure in cylinder and follow the step 2 for different values. iv. Draw the graph between ouput voltage Vs. vacuum pressure in mbars.
Vacuum presuure setup Vacuum pressure transmitter Voltmeter
6. LEVEL MEASUREMENT USING DPT
To measure the level of liquid in the tank with the differential pressure transmitter and to calibrate the zero and span of the level interns of 4-20 mA.
Measure the liquid level and calibrate it interms of 4-20 mA.
a) Weight the empty container and calibrate the daters level to 4mA. b) Fill the container with the water and calibrate the full level to 20mA.
c) Now perform the experiment in the ascending order in steps of 5cms.
d) Repeat the same procedure for the descending order. e) Tabulate the readings.
f) Draw the hastenis
- 1 No
- 1 No
7. UV-VISIBLE SPECTROPHOTOMETER
To find out the absorbance, % of transmittance and concentration for a given test solution, using UV spectrophotometer.
Find out the absorbance, % of transmittance and concentration of the given
1. Switch on the UV-spectrophotometer.
2. Switch on the lamp by electing the names of rating disc.
3. Place the reference solution in the first column of rotating disc.
4. Use any other column to place the test solution.
5. Select the operating mode. There are 4 types of operating modes:
i. Single wavelength
ii. Multiple wavelength iii. Scanning mode
iv. Time scan mode
6. Select the mode. The 3 parameters to be measures are absorbance, % of transmittance and concentration for a given test solution.
Note down the result from the 1st parameter.
1. UV spectrophotometer – 1 No.
8. IR – SPECTROPHOTOMETER AIM
To measure and analyze the absorbance, percentage transmission concentration of the given samples using IR spectroscopy
*wait for 3o minutes for IR source to be operated, then take the readings.
For IR wavelength is ABOVE 300nm :
Place reference sample in CELL No 2.
Place the sample to be analyzed in cell NO 1 or 3 or 4 or 5
Single wave length:
As the name suggests, this mode is used t take readings at one wave length. Depends on the absorbance mode, transmittance mode, concentration mode the data will be displayed on the monitor. Each subsequent data can be transferred just by pressing Key of 117.After completion of the data transfer, Press ESC key to stop the reception.
Multi wavelength analysis:
This mode is similar to single wave length except that it takes readings at more than one wavelength. With this mode, readings can be taken at minimum 2 discrete readings and maximum
8 discrete wavelength. Any 8 wavelength can be selected in the range 200nm to 1000nm.Note the maximum wavelength of absorption .
1. IR spectrophotometer sl-117
9. Ph – Meter Measurement of ph - value of Test Solutions
To measure the PH values of the test solutions using pH-meter.
Find the pH values of the test solutions.
1. Switch on the PH meter
2. Connect the glass electrode to the PH-meter
3. Take distilled water in a beaker and insert electrode in the beaker
4. The PH meter should show approximately test solutions. If Acidic than the PH is < 7 and if alkaline than the PH >7
1. pH meter – 1 No.
2. Test solutions – few types
3. Beaker – 2 Nos.
4. Stand – 1 No.
10. MEASUREMENTS OF CONDUCTIVITY OF TEST SOLUTIONS.
To measure the conductivity of the given solution.
(i) Solution under test is taken in a beaker. (ii) Electrode is immersed into the solution
(iii) The electrode terminal is connected to display unit.
(iv) Digital display shows the conductivity of the given solution in mho
(v) Repeat the procedure fro different samples. (vi) Switch on the supply.
(i) Solution under test.
(ii) Conductivity electrode
(iii) Conductivity meter setup with display.
Anna University Nov/Dec 2012 Timetable Result
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