Filtec FT-70c, Service And Technical Reference Manual

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FT-70 Fill Level Inspector Service Manual
6-40
Establishing the Target Head Height
1. Press Key 1 to begin the Learn Target Head Height procedure.
2. Precisely center a 100 percent reject container in the inspection
tunnel and then press any key to continue.
3. Lower the x-ray beam into the liquid by slowly turning the
Head Height Adjustment Crank.
4. Continue lowering the head until RAISE HEAD ONE TICK
displays. Stop lowering the head at this point.
5. Raise the head one tick as indicated by the Head Height Meter
and then press the Arrow Key.
6. Repeat step 5 until @TARGET HEAD HEIGHT appears. You
are now at the Target Head Height. Note the head height
indicated in the Head Height Meter, you must enter the height
in the next step.
7. Press Key 1 and then use the Arrow Keys to enter the Target
Head Height into the system.
8. Press Key 1 to accept the height setting and to proceed to the
Dynamic Reject Point Test.
The Dynamic Reject Point Test
The Dynamic Reject Point Test is used to verify the inspection
accuracy under production conditions. You need thirty 100 percent
reject production containers to perform this test.
1. Start the conveyor and run it at production speed.
2. Press the Arrow Key and you are instructed to run thirty 100
percent reject containers through the FT-70. Start them far
enough upstream so they do not slide on the conveyor as they
pass through the inspection area.
The FT-70 must reject all 30 containers in order to establish the
Dynamic Reject Margin. The Dynamic Reject Margin
compensates for fill level variance due to conveyor motion.
3. If during this test the message LOW MARGIN, RAISE 1 TICK
appears, then a container has failed the test. You must raise the
inspection head 1 tick and then press the Arrow Key to repeat
the test.
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