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Product spacing
e
=
p
Determining Weight Values
(The following description refers to the illustrations on the left.) The product approaches
the measurement (weighing) section of the conveyor system. The product is detected on
the conveyor belt. The weight value increases from "0" to "G" on the checkweigher display.
The product now rests entirely on the conveyor belt. At this moment, the weight value
determined on the weighing platform is higher than the actual weight of the product.
This is known as "overshooting" the weight.
The product is now conveyed across the weighing section. Weight values are determined
continuously, with a tendency toward identical values. The weight value that is consis-
tently determined over time is the actual weight value of the product.
The product breaks the light barrier; i.e., it reaches the photo sensor positioned at the
end of the weighing section, which triggers transmission of the weight value over the
interface to the user's peripheral equipment.
Product Spacing
The next product approaches the conveyor belt.
Important Note:
It is essential that two products are not on the conveyor belt, i.e. in the weighing section,
at the same time. For added safety, 10% of the length of the conveyor belt (weighing
section) should be added to the distance between products.
This yields the total distance between products as follows:
The distance between the front of one product and the front of the subsequent product
should be equal to 110% of the length of the conveyor belt (weighing section).
The product comes to the end of the weighing section and continues to the next conveyor
belt segment. The weight readout slowly returns to "0" and the photo sensor is ready to
operate.
Display and Control Unit
In normal operation, no actions are required on the part of operating personnel.
If the readout shows a value < or > zero when there is no load on the weighing platform,
however, the weighing instrument must be tared. All other information relevant to the
weighing instrument is contained in the weighing instrument's operating instructions.
Keys
The most important keys on the display and control unit are:
ON/OFF key e
– Turns the display on or off. The weighing instrument remains in standby mode.
Note:
The weighing instrument can be switched off only using the main switch.
Zero/tare key =
Zeroes/tares the weighing instrument
Data output key p
– Sends data to the built-in data interface. Identical to the function of the photo sensor.
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