Weight or Force measurement module ~ Ourengineeringlabs

Weight or Force measurement module

Also Read

Aim:This unit deals with weight (force or stress)measurement On completion of this unit you will become familiar with weight(force) measurements and to test sensor / Transducer characteristics against weight/force.
Equipment Required:

Voltmeter -2V to 20V range.
Power supply - $\pm$12V DC.
Load cell - 20kg.
Weights 1,2,5 kg.
Panel.

Theory: Strain gauge can be used to measure weight / force. Heavy loads requires load cell for weighing purpose. Typical load cell construction is shown in figure bellow.
Load Cell

Stress in the direction of S as shown in above figure causes compression along the axis and expansion in the X & Y axes. This results decrease in the resistance of gauge A & increase in the resistance of gauge B. Gauges on all four sides of bar if connected in bridge form gives high sensitivity and thus measurement of small loads as well as heavier loads is possible.
Procedure: Panel provides all circuitry needed to perform experimentation on weight / force measurement .Load cell required is external and should be connected through "D" connector. On board circuitry consist of instrumentation amplifier and single ended amplifier. Zero adjustment and span adjustments potentiometers are provided.

Select the sensor by setting rotary 6 position switch at correct location.
Connect $\pm $12V DC to the panel terminals connect external load cell to the panel through "D' connector. Plate on load cell is provided for placing different loads (weights).
Connect a voltmeter across output terminals. Adjust output to zero volts by zero potentiometer for no load(weight) condition.
Place 10kg weight/load in the pass of load cell and adjust output to 1V DC by span potertiometer.
Repeat the above produce for "0" output and 1V output condition twice or thrice to ensure correct range adjustment.
Read carefully procedure given
Now note down the output voltage against different weights as indicated in observation table.

Observation table

Sno	Load/Weigth Kg	Output Voltage	Load cell measured weight (Output volt*Multiplication factor)
1
2
3
4
5

Plot a graph of load(weight) versus output voltage and calculate slope of it
Conclusion: Observations and graph plotted shows linear relation between output voltage and weight(load).

Comments

Presto Group said…

Thanks for sharing this informative post. It's very helpful. Keep it up!

Tensile Testing Machine | Laboratory Testing Equipment & Instruments

Feb 9, 2021, 6:43:00 AM

Tin-Smithy viva questions and answers page 2

Q: What are some essential tools used in tin smithing? A: Some essential tools used in tin smithing include tin snips, hammers, mallets, soldering irons, soldering flux, soldering paste, tinsnips, stakes, anvils, shears, and bench vices. Q: Can you explain the purpose of tin snips in tin smithing? A: Tin snips are used in tin smithing to cut and shape tin sheets. They have specially designed blades that are capable of making clean and precise cuts in the metal. Q: What is the role of hammers in tin smithing? A: Hammers are used in tin smithing for various purposes, such as shaping, forming, and planishing tin. Different types of hammers, such as ball peen hammers, cross-peen hammers, and planishing hammers, are used to achieve specific effects and textures on the tin surface. Q: What is the function of a soldering iron in tin smithing? A: A soldering iron is used in tin smithing to heat and melt solder, which is then used to join pieces of tin together. It provides the necessary heat ...

Complete post >>

Strength of Materials viva Question and Answers

1. Define Hooke’s Law. Ans . It states that when the material is loaded within the elastic limit the stress is directly proportional to strain. i.e. Stress α strain. or Stress = constant x Strain 2. Define Strength of materials. Ans . The strength of a material is its ability to withstand an applied stress without failure. 3. What is stress? Ans . When load is applied on any object then a resisting force is induced, that resisting or reacting per unit area of cross-section is called stress. 4. What is strain? Ans . Stress is change in dimensions upon original dimentions. 5. What is deformation? Ans . Deformation is change in dimensions of any object due to applied load. 6. On which steel you have performed tension test. What is its carbon content? Ans . On mild steel (0.3 to 0.6% carbon). 7. What kind of fracture has occurred in tensile specimen. Ans . Ductile fracture. 8. Define temperature stress. Ans . Stress introduc...

Complete post >>

Viva questions and answers about CNC (Computer Numerical Control)

Q1: What is CNC? A1: CNC stands for Computer Numerical Control. It is a technology that uses computerized systems to control machine tools and automate manufacturing processes. Q2: What are the advantages of CNC machining? A2: Some advantages of CNC machining include: Increased precision and accuracy in manufacturing. Improved efficiency and productivity. Greater flexibility in producing complex parts. Reduced human error and increased repeatability. Ability to automate manufacturing processes. Enhanced safety for operators. Q3: How does CNC differ from traditional machining? A3: CNC differs from traditional machining in that it uses computerized control systems to operate machine tools. Traditional machining relies on manual operation, while CNC machines can execute precise instructions based on digital design data. Q4: What are the primary components of a CNC system? A4: The primary components of a CNC system are: Machine tool: The physical equipment such as a lathe, mill, or router....

Complete post >>

Isometric drawings for practice in AutoCAD

What is Isometric Drawing? Isometric drawing is a method of visually representing three-dimensional objects in two dimensions. It allows for a clear and comprehensive depiction of complex structures by keeping the scale consistent and eliminating distortion. Isometric drawings use a 30-degree angle from the horizontal in all three axes (X, Y, and Z), creating a pseudo-3D effect where the height, width, and depth are equally foreshortened. Creating Isometric Drawings in AutoCAD AutoCAD provides tools and settings that make creating isometric drawings straightforward. Here’s a step-by-step guide: Step 1: Set Up Isometric Snap/Grid 1. Enable Isometric Snap/Grid: - Type `SNAP` in the command line and press `Enter`. - Type `Style` and press `Enter`. - Choose `Isometric` and press `Enter`. 2. Switch Between Isoplanes: - Type `F5` or `CTRL+E` to toggle between the top, right, and left isoplanes. Step 2: Draw Isometric Circles and Arcs 1. Isom...

Complete post >>

AutoCAD practice parts for Learners

Hi all! The below table contains some of the AutoCAD practice drawings with step by step procedure links. please visit the links to see all details of the draiwngs. Practice drawing Details Remarks Intoduction to AutoCAD Procedure steps in AutoCAD. Procedure in YOUTUBE. Download AutoCAD drawing files. You have any projects or quaries please contact us! Basic settings of drawing in AutoCAD Procedure steps in AutoCAD. Procedure in YOUTUBE. Download AutoCAD drawing files. You have any projects or quaries please contact us! Drafting settings in AutoCAD Procedure steps in AutoCAD. Procedure in YOUTUBE. Download AutoCAD drawing files. You have any projects or quaries please contact us! ...

Complete post >>

Welding-TEE FILLET JOINT

Ex. No : Date : TEE FILLET JOINT Aim To join the given two work pieces as a ‘Tee fillet joint’ by arc Welding. Material used Mild steel plates. Tools required • Welding power supply • Flat file • Welding rod • Chipping hammer • Electrode holder • Wire brush • Gloves and apron • Earthing clamps • Shield and goggles Procedure The given workpieces are thoroughly cleaned, i.e. rust, scales are removed and the edges are filed. The electrode is held in an electrode holder and ground clamp is clamped to the welding plates and the power is supplied. The workpieces are positioned on the table to form a “Tee fillet joint”. The tag weld is done on the bo...

Complete post >>

FACING, PLAIN TURNING AND STEP TURNING

Ex. No : Date : FACING, PLAIN TURNING AND STEP TURNING Aim To perform turning, facing and chamfering on a cylindrical work piece. Material used Mild steel cylindrical rod. Tools required Lathe Three-jaw chuck Chuck key Vernier caliper Single-point cutting tool Procedure First loosen the jaw in the chuck key to position the work piece, and then tighten the jaws. Fix the cutting tool in the toolpost. Switch on the lath...

Complete post >>

Fluid mechanics VIVA QUESTIONS and ANSWERS

1. Define density? Ans: It is defined as the ratio of mass per unit volume of the fluid. 2. Define viscosity? Ans: It is defined as the property of fluid which offers resistance to the movement of fluid over another adjacent layer of the fluid. 3. Differentiate between real fluids and ideal fluids? Ans: A fluid, which is in-compressible and is having no viscosity, is known as ideal fluid while the fluid, which possesses viscosity, is known as real fluid. 4. What is a venturimeter? Ans: It is a device which is used for measuring the rate of flow of fluid flowing through pipe. 5. What is a notch? Ans: A notch is a device used for measuring the rate of flow of a fluid through a small channel or a tank. 6. Define buoyancy? Ans: When a body is immersed in a fluid, an upward force is exerted by the fluid on the body. This upward force is equal to the weight of the fluid displaced by the body. 7. Define meta-centre? Ans: It is defined as the point about which a body...

Complete post >>

Sheet metal Funnel making

Making a Funnel using metallic sheet Making a Funnel using metallic sheet Aim:- To make a funnel from a given (GI)metallic sheet. Tools Required:- MALLET, SNIP, STAKE, STEEL RULE, BALL PEEN HAMMER, STRAIGHT EDGE, RIVETS, SCRIBER Procedure: The size of the given sheet metal is checked for its dimensions using a steel rule The required development of surface is being made on the white paper which is overlapped on the sheet metal. The marking is done on the sheet metal as per the development being done on the paper. Now using straight snips, unwanted materials are removed. Now fold and bend the workpiece to make the funnel shape and joint is made on the workpieces. Then using a groover, a locked grooved joint is made for about 5mm. Also, hemming is done in the bottom of the funnel. In between top face and bottom face, a butt joint is made using a solder. Finally, trimming and finishing operations are carried out. Safety Precautions:- Each cut you make exposes s...

Complete post >>

Welding-LAP JOINT

Ex. No : Date : LAP JOINT Aim To join the given two work pieces as a lap joint by arc welding. Material used Mild Steel plates. Tools required Welding power supply Flat file Welding rod Chipping hammer Electrode holder Wire brush Gloves and apron Earthing clamps Shield and goggles Procedure The given workpieces are thoroughly cleaned, i.e. rust, scales are removed and the edges are filed. The electrode is held in an electrode holder and ground clamp is clamped to the welding plates and the power is supplied. The workpieces are positioned on the table to form a “Lab joint”. The tag weld is done on the both the ends of joining plates to avoid the m...

Complete post >>

OurEngineeringLabs

Search This Blog