Filtec FT-75 - Fill Level Inspection Basics

FT-70/75 Fill Level Inspectors Operator’s Guide
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Fill Level Inspection Basics
The FT-70/75 Fill Level Inspection systems utilizes a Container
Radiation Profile Comparison Principle to create a radiation finger-
print of the container.
To create a radiation profile a x-ray beam is directed through the
container. Some of the radiation is blocked by the container
material and container’s contents while the remaining x-rays
emerge from the opposite side of the container where they are
measured by an x-ray detector.
The amount of radiation measured is the containers Radiation
Profile, or fingerprint, which is then compared against a Master
Container Profile .
Figure 1-2. Scanning the container.
To allow for slight variances in the fill level an Underfill Threshold
and Overfill Threshold are determined (both for the FT-75 and one
or the other for the FT-70). These thresholds form the tolerance
range for deviation from the Master Profile. This tolerance range
between the thresholds is called the Target Zone. Any container
with an x-ray count that falls below the Underfill Threshold is
rejected as an underfill and any container with a X-ray count that
rises above the Overfill Threshold is rejected as an overfill.
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INDUSTRIAL DYNAMICS
Torrance, California USA
MODEL FT-50
FILL LEVEL INSPECTOR
4
3
5
1
2
1
32
No. Description
1 X-ray Source
2 X-ray Beam
3 X-ray Detector
Industrial Dynamics Company, Ltd. Document 40274-0600