Infratec™ 1241 Grain Analyzer
Service Manual 1001 5015 / Rev. 4 5:73
Checking pathlength at 6 mm
Start with checking path length at 6 mm before any adjustments are made. This is to
make sure that the adjustment is needed, i.e. that the measured path length is outside
the tolerance limits. If adjustment is required then follow the instruction under
"Adjustment", herein.
1. From the Infratec 1241 Service Menu (Manual Tests/Measuring Unit/Position
Settings) set the path length to home position at 33 mm.
2. Now, set the path length to 6 mm.
3. Slip the GO gauge (6 mm side) in the chamber, between the middle of the
detector glass and the glass on the cell housing, and slowly rotate the cylinder.
The gauge should rotate past the raised section with no drag.
Fig. 5:74
Next, place the NO-GO gauge (6.2 mm side) in the chamber and repeat the test. The
gauge should stop the cylinder's rotation. It should not be possible to rotate the 6.2
mm top.
If adjustment is needed, the measuring unit must be sent back to the factory for repair
as special tools are required to get the correct tolerances.
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