Instruction manual

MATERIAL TESTS

Material tests are performed to verify the accuracy of the of the span calibration. If the

material tests indicate a repeatable deviation exists, a manual span adjust (P019) is

then performed. This procedure automatically alters the span calibration and adjusts

the test load (P17) value, yielding more accurate span recalibrations.

Test weights are NOT used during material tests.

» Run the belt empty.

» Perform a zero calibration.

» Put the BW100 into run mode

» Record the BW100 total as the start value _ _ _ _ _ _

✍

» Run material at a minimum of 50% of design rate over the belt scale

for a minimum of 5 minutes.

» Stop the material feed and run the conveyor empty.

» Record the BW100 total as the stop value _ _ _ _ _ _

✍

» Subtract the start value from the stop value to determine the BW100 total

» Weigh the material sample if not already known.

BW100 total = _ _ _ _ _ _

✍ material sample weight = _ _ _ _ _ _ ✍

» Calculate the span adjust value:

% span adjust =

BW100 total - material sample weight x 100

material sample weight

start total

stop total

scale

RECALIBRATION

PL-531 36