15
Weigh Scale Span Calibra on
Introduc on
The informa on contained within this sec on of the manual aims to provide adequate instruc on to
allow any personnel to carry out span calibra on for the following types of weigh scales;
1.
Gallagher W
-
0
2.
Gallagher TW Range
3.
Gallagher W210
4.
Gallagher W310/W810
Prepara on
Span calibra on is the process of recalibra ng the accuracy of the load on a weigh scale.It is important
that guidance be given, so that span calibra on is done inappropriately.
The load bars on the Dra Master are built in as standard, for span calibra on to be completed
personnel must create (or update) a ’custom load bar’.
You will need a test weight, which you know the exact weight of. Recommended that you use at least
200 Kg for ca le systems and 50 Kg for sheep weighing systems. Tractor weights or feed bags are ideal
if their weight is known accurately. Your rural merchant may be able to weigh these on their cer fied
scales to confirm the accurate weight.
DO NOT PROCEED
, if there are other faults (weight always zero), or is dri ing, or messages like
OVERLOAD
are displayed on the screen), which are electrical or mechanical problems. These problems
cannot be fixed by span calibra on.
W
-
0 Calibra on Process
1.
Hold weigh key and zero key together for 2 seconds for span process to start.
2.
CAL 0
is displayed.
3.
Remove all weights from load bar and press
Zero
key.
4.
CAL L
is displayed.
5.
Add some weight to calibrate and press
Weigh
key.
6.
Weight calibrate is displayed.
7.
Press
Auto
key to confirm the span
Please reference W
-
0 Weigh Scale quick start for more informa on,
available through the Gallagher website:
www.gallagher.eu/en_gb/w
-
0
-
weigh
-
scale
