BELT
CHECKWEIGHER
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Belt
Checkweigher
Belt checkweighers are designed to check the weight of a package,
product, or container as the package passes over a conveyor that is
mounted on a load cell or strain gauge. Belt checkweighers are
designed with a belt conveyor to carry the product over the load cell.
Belt conveyors are often designed with a belt conveyor to bring the
product in to the load cell conveyor and a belt conveyor to discharge
the product from the belt checkweigher.
The design of the belt checkweigher requires that the package be on
the load cell conveyor for a small amount of time, usually fractions
of a second. The belt checkweigher design does not require that the
package stop on the load cell conveyor. Belt checkweighers are
designed with different length load cell conveyors. The greater the
ratio of package length to load cell length, the faster the conveyor
on the belt checkweigher can be run. As a general rule of thumb, the
length of the load cell conveyor should be approximately one and a
half times the length of the package. This package length to load cell
conveyor length ratio allows for a wide range of production speeds for
the belt checkweigher. The discharge conveyor can also be used as a
reject conveyor, if the checkweigher is designed to have a reject
system. Checkweighers can be designed with indicator light rejects,
conveyor stop rejects, air rejects, pneumatic are rejects, diverter
gate rejects, or drop nose rejects.
Checkweighers
are used as a quality check for a package to assure that the proper
weight of product has been filled into the container, or to insure
that all the components have been dispensed into the container. Belt
checkweighers are designed to fit in as part of a conveyorized
production line, and are designed to check the weight of a package
without operator input.
The weight range the checkweigher deems “acceptable” is an electronic
input to the belt checkweigher’s controls. The weight range that a
given belt checkweigher is limited on the upper by the capacity of the
load cell and on the lower end by the mechanical “noise” of the
machine. (The belt checkweigher has to be able to clearly distinguish
a product on the load cell conveyor from the standard motion weight of
the belt.)
Load cells and strain gauges are designed to take an electrical signal
as an input and to measure the electrical output as the indicator of
weight. The input electrical signal is of a given voltage and the load
cell is designed to pass this signal through a resistor. As the weight
on the load cell increases the resistance of the resistor also
increases, resulting in an output voltage that is different than the
input voltage. The checkweigher determines the weight of a package by
comparing the output voltage signal to the input voltage
There are many different types of Checkweigher Equipment, and we can
help you find the right Checkweigher machine to meet your needs. We
can help you locate or sell Belt Checkweigher Equipment, Chain
Checkweigher Equipment, Full Case Checkweigher Equipment, Level
Sensing Checkweigher Equipment, and Metal Detector Combo Checkweigher
Equipment.
MANUFACTURES OF
BELT CHECKWEIGHER EQUIPMENT:
Barkley & Dexter,
Cintex, Dun-Rite/Care Control, Filtec, Garvens, Hi-Speed, Ishida,
Lock, Loma, Mettler, Ramsey, Yamato |
