Notes On Mounting - HBM Z7A Série Notice De Montage

Z7A/...
1

Notes on Mounting

The following must be considered during the assembly of load cells:
• The load cell must be handled with care.
• Do not overload the load cell, not even for a short time, for example, by im-
pact forces during mounting or unevenly distributed supporting forces.
• The load cell seating must be horizontal, flat over the whole surface and,
like the load cell base, absolutely clean.
• The fundament must be unyielding in relation to the expected loads.
• Dust, dirt and other particles are not to accumulate such that they affect the
load cell's mobility and thus falsify the measured value.
• Every load cell should be shunted by a stranded copper cable (approx.
2
16 mm , e.g. EEK... from HBM) during or immediately after installation to
prevent any welding currents from flowing through the load cell.
CAUTION
Never load the transducers against the indicated load direction (see arrow
on the load introduction side). This results in measuring errors and can da-
mage the fixing bolts. With the correct load direction and electrical connec-
tion, the output signal of the load cells is positive.
The load cells are fixed at the mounting bores like a cantilever beam, the load
is applied at the other end. For the recommended screws and tightening tor-
ques refer to the table below:
Max. capacity
0.5...2 t
5 t
10 t
*) Recommended value for the stated property class. For screw dimensioning please refer to the appro-
priate information given by the screw manufacturers.
A1847-1.1 de/en/fr
Thread Min. property class
2 x M12
2 x M20
2 x M24
Tightening torque
Frict. coeff. µ = 0.125
10.9
10.9
10.9
19
*)
115 N@m
560 N@m
970 N@m
HBM