Strainsert Co.

Features of Strainsert Load Sensing Clevis Pins Easy Installation: RCP and SCP models replace standard Crosby or Skookum shackle boltspins respectively Precise Load Sensing: Complete strain gage bridge circuit bonded and sealed inside small hole along longitudinal axis of Bolt, by exclusive Strainsert process. Rugged: Due to self protecting nature of strain gage installation sealed inside small holes. Proven immune to harsh environment. Accuracy: Strainsert Load Sensing Clevis Bolts have combined error due to repeatability and non-linearity of less than 1% of rated load typically.

The Strainsert deep seahigh pressure Clevis Pin provides the ability to measure force at clevis joints under high-pressure conditions. Complete systems are available, and include the Instrumented Clevis Pin, cabling, and a digital display indicator.

Dual bridge gaging provides two independent strain gage circuits. This option is advantageous for controlling multiple feedback systems as well as providing redundant force-measuring capability.

Strainsert offers a custom Load Pin configurator to allow engineersdesigners to input nominal design parameters to determine application feasibility and generate conceptual load pin designsdrawings quickly and effectively. All finalized designsdrawings will be completed and formalized by Strainsert.

Integral signal conditioning, built into the pin, provides a high level 4 – 20 ma output, while maintaining pin ruggedness and durability. Consult Factory regarding 4-Wire Amplifier

When both the magnitude and the direction of the load are unknown, the vector measurement is possible using a Strainsert force sensing pin instrumented with two strain-gage bridges oriented 90° apart around the circumference. The cross-section of the pin shows the two sets of strain gages, the Y bridge will sense force component Py, while the X bridge will sense forces in the Px direction, 90° to Py. The outputs from the two bridges, Ex and Ey, can be measured and the resultant force magnitude and direction can be determined (see Biaxial Schematic Image.) *Certain custom pin geometry and bridge to bridge effects (cross-talk) may result in a measurement accuracy of 5% or greater. For such cases, Strainsert can provide a correction algorithm to minimize errors.