Electronic devices Weighing scale

1 electronic devices

1.1 microbalance
1.2 analytical balance
1.3 pendulum balance scales

electronic devices
microbalance

a microbalance instrument capable of making precise measurements of mass of objects of relatively small mass: of order of million parts of gram.

analytical balance


mettler digital analytical balance 0.1 mg readability

an analytical balance class of balance designed measure small mass in sub-milligram range. measuring pan of analytical balance (0.1 mg or better) inside transparent enclosure doors dust not collect , air currents in room not affect balance s operation. enclosure called draft shield. use of mechanically vented balance safety enclosure, has uniquely designed acrylic airfoils, allows smooth turbulence-free airflow prevents balance fluctuation , measure of mass down 1 μg without fluctuations or loss of product. also, sample must @ room temperature prevent natural convection forming air currents inside enclosure causing error in reading. single-pan mechanical substitution balance maintains consistent response throughout useful capacity achieved maintaining constant load on balance beam, fulcrum, subtracting mass on same side of beam sample added.

electronic analytical scales measure force needed counter mass being measured rather using actual masses. such must have calibration adjustments made compensate gravitational differences. use electromagnet generate force counter sample being measured , outputs result measuring force needed achieve balance. such measurement device called electromagnetic force restoration sensor.

pendulum balance scales

pendulum type scales not use springs. design uses pendulums , operates balance , unaffected differences in gravity. example of application of design scales made toledo scale company.