Load Cells

Select the Right Capacity and Accuracy

The first step in choosing a load cell is determining the required capacity. This is the maximum weight the sensor can measure accurately. Always select a capacity that safely exceeds your maximum expected load to prevent damage from shock or overloading. Our load cells cover a broad spectrum, from 5kg for small-scale measurement to 5000kg (5t) for heavy industrial weighing.

For applications requiring verified precision, look for an accuracy class rating. An OIML C3 rating, for example, indicates the cell meets international standards for linearity and repeatability, making it suitable for commercial scales. For other industrial processes, check specifications like creep and hysteresis to ensure the sensor's stability over time.

• Small projects and test benches: 5kg to 50kg capacities are typical.
• Platform scales and batching systems: 100kg to 2t capacities are common.
• Silo, tank, and hopper weighing: Capacities up to 5t are required.
• Check the datasheet for OIML C3, creep, and hysteresis values for precision-tasks.

Choose a Load Cell Type for Your Application

The physical design of a load cell determines how it should be installed and used. Matching the type of load cell to the application is key for reliable measurement.

S-type load cells are designed to measure both tension (pulling) and compression (pushing) forces, making them suitable for hopper scales or suspended weighing systems. Single point load cells are built for platform scales, compensating for off-center loads. For custom or compact equipment, miniature and diaphragm load cells provide force measurement in tight spaces. For prototyping, half-bridge sensors are often used in sets of four to construct a full weighing system.

• S-Type: For tension and compression. Used in hopper scales and batching machines.
• Single Point: For platform scales. Often feature IP65 protection.
• Half-Bridge: Used in multiples (typically four) to build a platform scale system.
• Miniature/Diaphragm: For compact machinery and applications with limited space.

Consider Material and System Components

The operating environment dictates the best material for your load cell. Aluminum alloy cells are a cost-effective choice for controlled, dry environments. For industrial settings with moisture, dust, or corrosive agents, alloy steel or stainless steel provide superior durability and longevity. Always check the Ingress Protection (IP) rating; an IP66 rating, for instance, confirms protection against dust and powerful water jets.

You can source these sensors as individual components or as part of a kit. Load cell kits simplify procurement by bundling multiple sensors with a compatible signal amplifier, like an HX711 AD module, and sometimes a digital indicator. Buying individual cells is ideal for replacing a single failed unit or for building a fully custom system with specific components.