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.
Unit of Measure


Bridge Resistance

N/A 350 Ohm (Nominal)


N/A 12 V AC (Maximum) 12 V DC (Maximum)


N/A ±0.15% FSO (Nominal)


N/A ±0.50% FSO (Nominal) on Primary axes

Pin Material

N/A Alloy Steels Higher Strength Stainless Stainless Steel 17-4, H-1025 (Standard)

Output Signal

N/A 2-mv/V (Nom) custom designs may effect output

Additional Information

N/A Features:

  • Pin Diameters from 1” and Larger
  • Internal Strain Gaging
  • 5 Step loading calibration on primary X and Y axes (2 runs each)
  • 2 Year Warranty
  • Full scale endpoint checks at 45° increments or specified range of interest
  • Force Component Resolution and Direction Capability

  • Specials from 1/2” diameter and larger
  • Submerged/High Pressure
  • 4-20ma output
  • System Calibration
  • Permanently attached cable
  • High Strength Material for Additional Force Capabilities

  • Sheave applications with variable angles
  • Research and Development
  • Loader Buckets
  • Any pin joint with rotating loading members
  • Aircraft component testing
  • Hydraulic Actuators
  • Mooring Lines