FMS BMGZ 610A, Руководство по эксплуатации

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Operating manual BMGZ 600A
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4 System Description
fig. 1: Basic structure of the belt scale BMGZ600A B620001e
4.1 Functional Description
The belt scale for bulk conveyors works according to the principle:
Flow rate = weight * speed
The measuring roller measures the load on the belt and the belt speed. This
information are transmitted to the electronic unit, which calculates actual flow
rate, charge weight and daily output. Using a printer, the raised quantity can be
printed to a charge protocol at any time.
4.2 Measuring Roller
The measuring roller is mounted between 2 support rollers under the belt. The
measuring roller whose shape corresponds to the shape of the belt is supported
on both sides on FMS force measuring bearings. The measuring bearings take up
the force directly at its origin and do not show any sensitivity to belt direction.
Therefore, no force decoupling gear is necessary.
The measurement of belt speed is achieved by means of a pulse generator which
is integrated in one of the force measuring bearings.
The maintenance-free, robust and compact design provides high reliability and
durability.
4.3 Evaluation Electronic Unit
The evaluation electronic unit contains a micro-processor to handle all
calculations and communications, the highly accurate sensor power supply and
the signal amplifier for the measuring value. As operation interface it provides 6
keys and a 2x16 characters display in the front of the electronic unit. All inputs are
saved in an EEPROM. The evaluation electronic unit has no jumpers or trimmers to
keep most accurate long-time and temperature stability.