Mass Meters

Mass-meters are instruments for measuring the mass of objects expressed in terms of permissible measuring units or their multiples or sub-multiples. In commercial transactions involving grains, the mass-meters used include weighbridges and net weighers. Since most grains are sold on the basis of mass, the importance of mass-meters cannot be over emphasised as prices for the products are fixed per unit ton or kilogram. The mass meters must therefore function accurately and is in-fact the agent’s and buyer’s guarantee that they are actually receiving what they have paid for, while the producer is paid for what he has in-fact delivered.

The function of the mass meter is to accurately determine the mass of product received and dispatched. Most losses occur if the mass meter is not regularly calibrated by a qualified institution.

There are many types of mass meters installed at various storage facilities. The working of these mass meters differs from mechanical to electronic type mass meters. Mass meters should be calibrated, and the calibration certificate must be available. Mass meters should be verified on a daily basis by the so called three-point testing method. The pit below the mass meter must be free of water and other obstructions. It must be cleaned on a daily basis and must be free of oil and/or soil. Mass meters should be inspected daily to ensure that the sides do not touch the sides of the mass meter pit and that there is enough movement space between the two to ensure free movement whether empty or under load.