Build your own scale with Gram’s load cell kits

From the platform to the silo – how to build your own industrial scale

Do you want a scale that fits your project exactly – whether for logistics, production or machine integration? With a modular load cell kit, you can turn almost any platform or construction into a fully-fledged digital scale. In this article, we will show you how to do this step by step – including physical basics, tips on assembly and selecting the right load cells.

What load cells are there – and how do they work?

Not every load cell is the same – different types are used depending on the application. The most important ones:

How does a load cell measure weight?

The basis of every load cell is Hooke’s law:

σ=E⋅ε

Stress = modulus of elasticity × strain

This means: If the cell is loaded, the carrier deforms minimally. This elastic micro-deformation is recorded by strain gauges, which change their electrical resistance in proportion to the strain. This produces a precise electrical signal – digitized in the Xtrem® module.

Important: The relationship is only linear and reliable in the elastic range – which is why the materials and geometries are selected so that they work precisely in the optimum stress range.

What is a Gram load cell kit?

A load cell kit solution from Gram Group contains everything you need to build your own scale:

Each kit consists of:

• 4 load cell
• 1 junction box with IP67 protection
• 1 Xtrem® digital module (can be connected via cable or optional Wi-Fi)
• Free software/app access for calibration and data retrieval

The H8C Rebel Load Cells in our load cell kits are shear beam cells – they are robust, precise and ideal for DIY platform projects or machine integration.

DIY instructions: How to build your scale

1 – Select platform or support

• For WM: stable steel plate, frame or wooden pallet
• For MK: silo frame, tank foundation or hopper base

2 – Mount load cells – done correctly

• Mount all 4 cells tension-free, on a flat surface
• The load direction must be correct (observe directional force)
• The platform may only be loaded via the cells – no additional supports!

Tip: Even support is particularly important for shear beam cells. Even slight unevenness can lead to measurement errors.

3 – Connection and calibration

• Connect load cells to junction box
• Connect the box to the Xtrem® module
• Data transmission via RS232 or Wi-Fi (optional)
• Factory calibration available – optional fine adjustment with reference weights
• Calibration & adjustment possible via free PC software or Xtrem® app – without special hardware.

What is the maximum load I can weigh with a load cell?

Each load cell has a defined nominal load. The following applies for consistent and long-lasting use:

Rule of thumb: The platform should be operated with a maximum of 75-80% of the total nominal load.

Example: 4×1000 kg = 4000 kg → safe working load = approx. 3000-3200 kg

Start your DIY industrial scale project now

Whether you’re building a compact bench scale or a heavy-duty silo system with a capacity of up to 20 tons — we’ll help you find the perfect weighing solution for your specific needs.

Get personalized support from our expert sales team to select the right components for your project. We’re here to guide you every step of the way.

Contact us now and bring your custom weighing system to life.