2. INTRODUCTION
• Weighing balance is a device used to measure
weigh/Mass
• These are also known as mass scales, weight
scales , mass balance, weight balance, or balance
scale.
• The traditional scale consist of two plates
3. PRINCIPLE
• The basis of rapid and exact working method of
our weigh cells is the principle of “ELECTRO
MAGNETIC FORCE RESTORATION”
• The basic principle is compared to a simple
beam balance
• The weight is laid on one side of the beam. The
result is that the coil attached to the other side of
the beam tries to move out of the magnetic field
of the magnet
4. PRINCIPLE
• The amplifier maintains the right current to
keep the level balanced with the mass on the pan
• As more weight is applied to the pan, the current
is increased to maintain the lever platform
• The counteracting force that is created is
measured and translated
• The resulting electric current is then translated
into a displayed number that is shown to the
user.
5. PROTOCAL AND WORKING
1.WEIGHING BY DIFFERENCE:
• The mass of the chemical is calculated by
subtracting the weight of an empty container
from the total weight of the container
6. 2.TARING THE BALANCE
• The balance is set to ignore the mass of the
container so the mass of the added chemicals is
measured directly
• Place the empty container on the pan and close
the draft sheild
• Press the bar so the bar displays reads 0.000g
• The balance is now set to ignore the mass of the
container
7. DIFFERENT TYPES OF BALANCES
ANALYTICAL BALANCE:
• Analytical balances are found throughout the
most laborotories.They are mostly used to weigh
the substances and sample between 0.01 to
500mg
• An analytical balance measures masses to
within 0.0001 g
• Use these balances when you need this high
degree of precision
8. Analytical balance
• These unit measuring pans are usually encased
in a glass box so as to prevent any dust particles
settling in the pan
9. MICRO BALANCE
• Micro balances are generally designed to
measure weigh and provide data on the tiniest of
samples
• Most models can effectively provide data for
samples weighing between 6 and 0.0001mg
• These types of balances are generally used to
weigh highly valuable substances in minute
quantities
10. GOLD AND CARAT BALANCE
• Gold and carat balances, as the name implies are
designed to weigh gold as well as give carat
values
• These are more commonly found in jewellery
design workshops and retail jeweller outlets
• They are also used to measure and provide carat
values
11. SPRING BALANCE
• Spring balance or spring scales measure weight
by balancing the force due to gravity against the
force on a spring whereas a balance or pair of
scales using a balance beam compare masses by
balancing the weight of an unknown by mass of
an object against the known weight mass or
masses.
