calibration of load cell

When a load cell arrives at our calibration bench, the first thing we do is a visual and electrical check. Corrosion, damaged cables, or zero balance that’s wandered too far—these are signs the sensor needs more than a simple adjustment. Then we move to deadweight force reference machines or calibrated master load cells, depending on the capacity range. All our references are traceable to national metrology institutes, so the numbers hold up if you’re ever audited. We load the cell in steps, usually five or six points across its range, and record output for loading and unloading. This gives us linearity, hysteresis, and repeatability—three indicators that quickly show if the cell is still within its original spec. For sensors that have drifted, we check if gain adjustment or shunt calibration brings them back. Some can be corrected on the spot; others need a more thorough overhaul. Because Kingmach isn’t just a calibration house but a manufacturer of monitoring instruments, we understand how these sensors behave in real field conditions. That means we can spot problems that a generic metrology lab might miss. We also handle custom ranges, non-standard outputs, and multi-axis setups that come with our own product line as well as third-party brands. After calibration, each unit gets a detailed certificate with as-found and as-left data, so you know exactly what changed. If on-site service makes more sense—say, for permanently installed silo or pile testing systems—we pack the portable equipment and come to you. The goal isn’t just to meet a tolerance on paper; it’s to make sure the load cell does its job reliably until the next scheduled check.