Force Gauge

Force gauges are used in manufacturing, quality testing, and product development to measure tensile and compressive forces. Applications include peel testing, spring testing, wire crimp pull testing, switch actuation force, connector insertion/withdrawal force, and materials testing. Digital force gauges typically offer peak hold, data output, and configurable units, while mechanical force gauges use a sliding indicator on a graduated scale.

Calibration of force gauges involves applying known forces in both tension and compression directions and comparing the gauge readings. Reference standards include calibrated deadweights (for gauges used vertically), force calibration machines with reference load cells, or calibrated proving rings. Calibration is performed at multiple points across the range (typically 5-10 points per direction) and evaluates accuracy, repeatability, and hysteresis. The gauge's zero stability (return to zero after loading) is also verified.

For calibration management, force gauges are relatively simple instruments but are often used in critical quality tests where the measured force determines pass/fail of a product. Calibration intervals are typically 12 months. Force gauges should be protected from overload, side loading, and impact damage. The load cell, connecting fixtures, and display/readout all contribute to the measurement uncertainty and should be considered in the uncertainty budget. Regular zero checks before use and intermediate verification with known weights help maintain confidence between calibrations.