load cell using strain gauge

A strain gauge load cell measures force by converting mechanical strain into an electrical signal. When a load is applied to the sensor's metal element, it deforms slightly. Bonded strain gauges detect this deformation, and their resistance changes proportionally. A Wheatstone bridge circuit converts the resistance change into a measurable voltage output. This method has been proven over decades for its simplicity and dependability.

Yes, if properly sealed and protected. Kingmach load cells are built with fully welded housings and cable sealing glands to resist moisture, dust, and corrosion. For submerged applications, we offer IP68-rated versions. Temperature compensation networks minimize drift from ambient changes, making them suitable for long-term outdoor monitoring like foundation pit supports or bridge bearing reactions.

Standard sensors provide millivolt-level signals (typically 2 mV/V), which require external amplification or a readout instrument. If you need a direct analog output, built-in amplifiers can deliver 4-20 mA or 0-5 V signals. We also support digital outputs like RS485 on request for direct connection to PLCs or SCADA systems.

The load cell should be sized so that the maximum expected load does not exceed about 80% of its rated capacity to avoid fatigue and ensure accuracy. It's also wise to consider transient overloads and safety factors. Our technical team can help you review your application details and recommend a model with the appropriate range, mounting, and environmental protection.

Absolutely. We regularly customize dimensions, capacities, cable lengths, connectors, and signal output types to match unique installation requirements. Send us a sketch or spec sheet, and our engineers will propose a feasible solution. Custom orders typically have a lead time of 4-6 weeks depending on complexity.