Appendix 4: Timer Interrupters and Parameters
Interrupt cards
Preset values are 30.0, 40.0, 50.0, 95.0, 100.0 and 120.0 mm.
Measure the solid part of the card that will pass through the Light Gate. The two segments of a
double interrupt card must be equal in width.
Picket fence
Preset values of pitch are = 10.0, 20.0, 40.0,
60.0, 80.0 mm.
Measure from the start of one black edge to the
start of the next black edge.
10 Spoked Pulley
The measurements for the Data Harvest Spoked Pulley are
pre-defined.
Distance
Preset values are 100, 200, 300, 400, 500, 600, 700, 800,
900 mm, 1.0, 2.0, 3.0, 4.0, 5.0 or 6.0m
Measure from the sensor connected to Input A to the
sensor at Input B. E.g. with Timing mats measure from
the centre of one mat to the centre of the other mat.
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Single interrupt card
Double interrupt cards
Picket fence
Timing mats
OR
OR