When overload protection and/or load indication is to be installed in a conveyor/crane or other device, the SLC may be the ideal solution. The Load Pin can easily replace the existing shaft at an equalizing pulley or in other parts of the construction.

The Load Pin should be installed as close as possible to the force/load for best accuracy.

Both the Load Pin and the Amplifier are designed to withstand extreme environmental conditions for a long operation time.

The Load Pin SLC is designed as a shaft. Built into the shaft is a number of foil-strain-gauges for sensing of the deformation of the shaft during exposure to load. Shear forces appear in the section between the support and the applied load. Those shear forces are relative to the load on the Load Pin. Since the strain-gauges are positioned in the centre of the Load Pin little or no influence is derived from bending or torsion forces. The strain gauges shall be fed with 10 V DC from Amplifier LCA. The strain gauges delivers a signal to the amplifier (mV/V). This is converted in the LCA Amplifier to a current signal of 4-20 mA which is extremely resistant to interference.

The Transducer Amplifier should be installed as close as possible to the Load Pin. The Load Pins can be designed within very wide limits for dimensions and capacities.

The Transducer Amplifier LCA, Art. No. 301281, is an instrument amplifier with "chopper"-input. An DC Power Supply (l0 V DC) for strain gauges is integrated with the Amplifier. The Amplifier converts the mV/V signal from the Transducer to a robust, standardized "Current Signal" (4-20 mA).