Publicité
You do not need to pay attention to this information if measurement takes place at uni
form temperatures or taring is possible before changes in temperature. Likewise, large
nominal (rated) forces above 25 kN are not affected.
The screwed-in force application parts must be sufficiently pre-stressed to meet the
stated specifications and the full endurance strength of the threads. This is implemented
with a locknut screwed onto the customer-side structural element. We recommend using
one of the methods described below.
1. Pre-stressing with defined tightening torque
Force transducers with a nominal force up to and including 25 kN can be mounted
using this method.
S
Screw the force application part into the transducer or adapter as far as the retainer.
S
Unscrew force application part two revolutions.
S
Preload force application part with the defined tightening torque.
Nominal (rated)
force
in kN
1.25
2.5
5
12.5
25
Tab. 7.1
Tightening torques and screw-in depths
2. Pre-stressing with tensile forces
Force transducers with any nominal (rated) force can be mounted using this method.
The procedure should always be used for force transducers from 50 kN in dynamic
sustained loading, as the torque moment required for the locknut would be too high in
Method 1.
S
Screw the force application part into the transducer or adapter as far as the retainer.
S
Unscrew force application part two revolutions.
S
Load the force transducer in the tensile direction to 120% of the maximum working
force. The following table shows the tensile forces to be applied when the transducer
is subsequently loaded with the nominal (rated) force. Correspondingly smaller tensile
forces can be used for applications in small force ranges.
U10M
MECHANICAL INSTALLATION
Tightening torque M
in N@m
in lb@inch
17
35
68
135
135
A
in mm
150
310
600
1195
1195
Thread reach
in inch
26.4
1.04
26.4
1.04
26.4
1.04
26.4
1.04
26.4
1.04
19
Publicité
