Special Instructions - HBM VKK1-4 Notice De Montage

VKK1-4 / VKK1R-4
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Special instructions

For other test loads types (e.g. building site vehicle testing), the user can
extend the chart by drawing an additional line between the zero point and the
actual test load used.
If the corner load errors are particularly high or if the load cells have an input
resistance of more than 350 Ω, it may be that the total value of the resistor
network is insufficient. In these cases, remove the "0 Ω resistor" (R19,
R29,...,R69) and replace with a resistor of your choice. This resistance will be
added to that of the network.
If the chart is not big enough, the adjustment resistance can be calculated as
follows:
R
(AW)
+
R
(EA)
L
(P)
In this case, you should first check the installation for possible errors.
Note
The bases for calculation described in this section for corner load
balancing and appearing in the form of a chart, a table or a formula,
apply to load cells with a symmetrical output voltage. In practice, the
balancing effect may differ from the target value, depending of the type
of load cell involved. In this case, you will have to use empirical values
for balancing.
A2326-1.1 en/de/fr
R
(EA)
· L
R
(E)
(AW)
L
(E)
L
(P)
= adjustment resistance (Ω)
= output resistance of the load cell (Ω)
= measured corner load error (kg)
= test load (kg)
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HBM