Material Tests - Siemens Milltronics BW500 Operating Instructions Manual

Recalibration

7.2 Material Tests

P015 Speed Constant
Pulses/m
Speed sensor constant, adjust for P015
P014 Design Speed
Enter Speed
For constant speed (jumper), adjusts P014
The displayed speed (used in the rate computation) now equals the actual speed.
Note
When the speed adjust is entered, the instantaneous speed of the BW500 at that time is
used; this may cause an additional error if the speed is not checked again compared to the
BW500. Continue checking the speed against the BW500 and adjusting until the speed can
be matched exactly to when the input is entered.
7.2 Material Tests
Perform material tests to verify the accuracy of the span calibration and compensate for material
flow. If the material tests indicate a repeatable deviation exists, perform a manual span adjust
(P019). This procedure automatically alters the span calibration and adjusts the test load (P017)
value, yielding more accurate span recalibrations.
If the span adjust value is within the accuracy requirements of the weighing system, the material
test was successful. Resume normal operation.
If the span adjust value is not acceptable, repeat the material test to verify repeatability. If the
result of the second material test differs considerably, consult Siemens or contact your local
Siemens representative.
If the span adjust values are significant and repeatable, perform a manual span adjust.
Note
Test weights are NOT used during material tests.
There are two methods of executing the manual span adjust:
● % Change: based on the material test, the difference between the actual weight of material
and the weight reported by the BW500 and BW500/L is calculated and entered into P019 as
% change.
● Material Test: based on material test, the actual weight of material is entered into P019
The method of execution is a matter of preference or convenience, and either way yields the
same result.
68
V
97.5169
V
0.63 m/s
% Change
and
BW500 and BW500/L
Operating Instructions, 12/2016, A5E33482052-AD
Material Test