1.
STRAIN GAUGE
LOAD CELL
Prepared By
Ketan Nayak (140413117005)
Harsh Parmar(140413117006)

2.
INDEX
Sr No TITLE
1. INTRODUCTION
2. TYPE OF LOAD CELLS
3. STRAIN GAUGE LOAD CELL
4. APPLICATIONS
5. LIMITATIONS

3.
INTRODUCTION
• Measurement of Weight is an act Performed by our
Ancestors and still it is Performed in our day to day Life.
• Technology also had Taken a Leap in these Years .
• We have Advanced from To
•

4.
LOAD CELL
• When we hear about Load Cell One thing that comes
into mind is Weight Measurement and the Pointer scale
we used in our Earlier Times.
• But now the Question is “What is a Load Cell” ?
Load Cell is a Device or an Instrument which Converts
the Quantity of Force Applied over it to the Electrical
Signal Form.
• There are Many Types of Load Cells Available in Market
these Days.

5.
TYPES OF LOAD CELL

6.
ROLE OF STRAIN GAUGE
• Strain Gauge acts as the Transducer in the
Strain Gauge Load Cell.
• We can also Say that the Strain Gauge is the
Heart of this Load Cell.

7.
STRAIN GAUGE LOAD CELL

8.
WORKING
• The principle of operation of the Strain Gauge load cell is
based on the fact that the resistance of the electrical
conductor changes when its length changes due to stress.
• Cu Ni alloy is commonly used in strain gauge construction as
the resistance change of the foil is virtually proportional to the
applied strain.
• The change in resistance of the strain gauge can be utilized to
measure strain accurately when connected to an appropriate
measuring circuit.
• A load cell usually consists of four strain gauges in a
Wheatstone bridge configuration.

9.
• The electrical signal output is typically very small in the order
of a few millivolts.
• It is amplified by an Instrumentation amplifier before sending
it to the measurement system.
• The output can be Digital or Analog (0-5V) depending on the
application.

10.
APPLICATIONS
Engineering
•Test Rig Force Monitoring
•Strain Gauging of Components
•Robotic_Weighing of components
•Specialized Load cells
•General weighing
•Machine control
•Repair & Calibration

11.
LIMITATIONS
1. Calibration is a Tedious Procedure.
2. Mounting Can be Difficult in some Cases.