ID5000, XR5000 Level 1 Service Manual
Issue 4, 8/2017 17
Testing the indicator
Checking for stable weights
A stable weight is defined as a reading that does not move more than one division (resolution step) in either direction. Testing
the indicator for stable weights requires the use of a calibrator or a set of calibration plugs. You should use a known good load
bar.
Auto zero track may hide any small movements. Disable auto zero before testing for stable weights.
Follow these steps to disable auto zero on an ID5000 or XR5000 indicator.
1 Press Home
.
2 Press the soft key Settings, then Weighing Settings.
3 Set Auto Zero Track to Off.
How to test for stable weights
1 Connect the 0 mV/V calibration plug to a load cell connector on the indicator.
2 Press Power
to turn on the indicator.
3 Press Zero
to zero the indicator.
Checking the calibration
1 Test that the weights are stable, as described in
Checking for stable weights
above.
2 Connect the 2 mV/V calibration plug to the other load cell connector and remove the 0 mV/V calibration plug.
The weight displayed should be 2000 kg (4410 lb) within ±1 kg (2 lb).
Checking the load cell codes
Each type of load bar has a unique cell code. Plug in a known good load bar. The Weigh screen should display the expected
weight when a test weight is put on the load bar.
If not,
• Check that the indicator is not span calibrated. Go to the Settings > Service > Load Cell screen.
These settings can be important to the customer so check before changing.
The easiest way around a span calibrated cell code is to check the weighing performance using another type of load bar (e.g.
single load bar instead of both load bars plugged in).
• Check the load bar connector assembly and PCA. See
Troubleshooting
on page 13.
• To view the cell code number of the load bar that is connected, go to the Settings > Service > Load Cell screen.
• The latest firmware may include some new load cell codes for new models of load bars. If in doubt, update firmware to the
latest version from the Tru-Test website. Refer to the technical bulletin
Updating firmware
.
For more information about load cells, refer to the technical bulletin
Cell Codes
.
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