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5.3 Mounting the S2M
5.3.1 Mounting with tension/compression bars
In this mounting variant, the transducer is mounted with tension/compression
bars on a construction element and can then be measured in the tensile and
compressive directions. Alternating loads are also correctly recorded if the
transducer is mounted without axial play. For dynamic alternating loads, the
upper and lower threaded connectors must be pre‐stressed to above the
maximum operating load and then locked in place.
1. Installation and locking with initial stress:
Screw in the threaded connector
Pre‐stress transducer to 110% operating load in tensile direction
Hand‐tighten locknut
Relieve load on transducer
The transducer itself can be used to measure the initial stress.
2. Installation and locking with torque
Screw in the threaded connector
Tighten locknut with a torque of 15 Nm.
NOTE
When locking, the tightening torque must not be shunted through the trans-
ducer.
5.3.2 Mounting with direct connection
In this mounting variant, the transducer is mounted directly on an existing con-
struction element and can then measure in the tensile and compressive direc-
tions. Alternating loads are also correctly recorded if the transducer is moun-
ted without axial play. For dynamic alternating loads, the screw connected to
the rigid force transfer must be tightened with a torque of 15 Nm.
5.3.3 Mounting with knuckle eyes
Knuckle eyes prevent the application of torsional moments on the transducer
and also, when 2 knuckle eyes are used, bending moments, together with
lateral and oblique loadings. Although if two knuckle eyes are used, only
tensile forces can be measured. Knuckle eyes are suitable for use with
quasi‐static loading (load cycles v10 Hz). Pliable tension/compression bars
HBM
S2M
A3592-1.1 en/de/fr
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