LCT-11 Quick User Guide Rev.1.1.0, November 2020
Page
3
of
3
Understanding the LCT-11 Test results:
Test result with LCT-11
Possible reasons
What to do?
Input / Output resistance not in the
expected range
Cable or connector problem
Check the cable integrity and the
connectors
Problems inside the load cell
Replace the load cell
Sense is too high (6-wire load cell)
Excitation and Sense not connected
inside the load cell or 4-wire load cell was
tested as a 6-wire type
Replace the load cell
Signal output from the scale is not in
the expected range
Corrosion, force shunts, accumulated
dust below the load cell or a faulty load
cell, dirty or humid junction box
Clean the dust and check for force
shunts and alignment. Replace the
load cell if necessary
Signal output of the unloaded scale is
not in the expected range (target
value according to the scale’s dead
load)
One or more load cells are damaged due
to a mechanical shock or overload
Replace the load cells
Insulation resistance (Body to bridge /
Shield to bridge) is too low
Insulation error due to water or chemical
ingress to the cable or into the load cell
Replace the cable and / or the load
cell
Special Instructions for Measuring the Insulation Resistance on a Load Cell
:
1. Measuring the insulation resistance on a load cell requires special care and cleanness. Small errors when
executing the tests may lead to wrong results.
2. The ambient conditions must be dry, clean, dust-free and free from grease. The underlay has to be of non-
conductive material. Electrostatic charges will influence the measurement result.
3. The input connector has to be dry, clean and corrosion-free. Please take care for the correct fit. The cable of
the load cell has to be absolutely dry and clean. If required dry and clean it. If necessary make a clean strip of
the cable end.
4. Connect the wires of the load cell cable to the correct pins of the input connector, but make sure that the
SCREEN and the BODY are NOT connected.
5.
Please don’t touch and move the cable during the measurement.
6. During the measurement the operator should be the only person within a 1 m distance from the test stand.
When the instrument is measuring he should not move.
7. Power on the instrument. Then press the <
On/Off
> and the
<
↓
>
keys simultaneously for approx. 2 seconds.
This will start a measurement for the connected cable.
8. Connect the SCREEN and the BODY (of the load cell) to the input connector and subsequently start a load
cell test cycle.
9. Generally verify the repeatability of the measurement results.
Battery information
Please note that if the device is not used for a longer period (we recommend 3 days), the batteries must be
removed from the LCT-11. If the batteries leak, they may damage the device
