Load Cells and Force Sensors

Strain gauge load cells work by detecting the slight deformation of a metal element under load, which changes its electrical resistance proportionally to the applied force. This signal is amplified and converted into a weight reading. Air suspension sensors instead measure air pressure and temperature within the suspension bags to calculate weight.

Load cells are a specific type of force sensor designed primarily to measure weight or mass under compression or tension, often using strain gauge technology. Force sensors is a broader term covering devices that measure any applied force, including tension, compression, torque, or pressure, across various industrial applications.

TruckWeight offers strain gauge sensors for spring and mechanical suspensions, including walking beam and Chalmers systems, as well as a patented air suspension sensor for air-ride vehicles. This range covers most commercial trucks, tractors, and trailers, from dump trucks to tractor-trailer fleets.

Strain gauge sensors typically measure within 0.3% to 2% of gross vehicle weight, while the patented air suspension sensor achieves 0.3% to 1% accuracy across varying weather conditions. Accuracy depends on proper calibration, sensor placement, and consistent maintenance of the suspension system.

TruckWeight load cell sensors provide reliable wireless monitoring up to 500 feet (155 meters) from the truck, allowing operators to view weight readings via handheld display or cloud-based analytics without running wires through the cab or chassis.

Yes, calibration data from strain gauge and air suspension sensors is transferable, meaning the system can be moved from one truck to another without requiring a full recalibration process. This reduces downtime and installation costs when reassigning equipment across a fleet.