Load Introduction; Connection - HBM Z7A Série Notice De Montage

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Load introduction

Loads should be introduced as closely as possible in the direction of measu-
rement. Torsional moments, off-center loads and transverse or lateral forces
cause measurement errors and may damage the load cell. These adverse in-
fluences must be avoided, e.g. by using stay rods or guide rolls. These ele-
ments must not absorb any load or force components in the direction of mea-
surement.
HBM offers different load-introduction components suiting various mounting
situations in order to minimize the adverse effects due to load introduction:
• ZEL Rubber-metal bearing
• ZPL Pendulum bearing
• EPO3R Thrust piece
• ZL Load button insert
• ZK Spherical cap
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Connection

Load cells with a strain gage measuring system can be connected to:
• carrier-frequency measuring amplifiers, or
• DC measuring amplifiers suitable for strain gage measuring systems.
The load cells are connected using the six-wire circuit. The wiring assignment
is shown in the following diagram.
HBM
(grey) Sense (−)
(black) Excitation (−)
(white) Signal (+)
(blue) Excitation (+)
(green) Sense (+)
(red) Signal (−)
Shield,
(Wire strand)
connected to housing
Z7A/...
A1847-1.1 de/en/fr