IAE DraftMaster - Weigh Scale Span Calibra on; Introduc on; Prepara on; W-0 Calibra on Process

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