How does dynamic weighing of hanging load in motion work?

Dynamic weighing calculates the weight of a hanging load while it moves – no stop, no settling time. Intermercato Intelligent Weighing Systems do it with a patented algorithm inside the crane scale: the scale calculates a stable weight during the lift, signals the operator to unload, and saves the weight automatically.

World leading in dynamic weighing of hanging load. That is how Intermercato puts it. Here is what it means on the machine.

Static versus dynamic weighing of hanging loads

A hanging load is never truly still. On a material handler, the grab swings as the boom slews. It accelerates on the way up and brakes on the way over. Scrap shifts inside the grab. Every one of those movements adds or removes force on the load cell.

	Static crane weighing	Dynamic weighing with Intermercato
When the weight is taken	After the load has settled	During the lift
Operator action	Stop, wait, read	Keep working, unload on signal
Effect on cycle time	Extra seconds on every grab	Weighing is part of the normal lift
Effect of driving style	Large	Independent of driving style and operator, according to Intermercato
Storage of weight	Often manual	Automatic, in the app’s memory banks

How intelligent weighing works, step by step

1. Activate. The weighing starts automatically or manually, depending on the weighing mode.
2. Lift. The operator lifts and slews as normal. The load cell measures continuously.
3. Calculate. Intermercato’s unique algorithm calculates the weight from the moving signal.
4. Signal. When a stable weight has been calculated, the operator receives a signal to unload.
5. Save. On unloading, the weight is saved automatically in one of the app’s memory banks – tagged with material, collection point and, if you want, GPS position.

That is what Intermercato means by intelligent weighing: the scale takes over the weighing process, so the operator can keep the machine moving.

Built for real conditions

At CRONIMET NORR AB in Kalix, scrap shifts during lifting. Intermercato’s dedicated weighing technology quickly stabilises the measurement and delivers accurate results under real working conditions. The yard is small, so not having to reposition or drive to the weighbridge makes a real difference.

The hardware is built to match:

• Overload-protected and temperature-compensated load cell – cold mornings and hot afternoons, same scale.
• Handles up to 3x rated capacity in overload while keeping its accuracy.
• Extremely low-built design – minimal loss of lifting height.
• Wireless – no extra cables between the scale and the cab.
• No maintenance.

Three weighing modes

The Intermercato Weighing App for Android supports:

• Automatic weighing – the scale activates and handles the weighing cycle.
• Semi-automatic weighing – the weighing is activated manually by the operator.
• Container weighing – for containers, with gross and net weights.

All modes give gross and net weights.

At Hafen Wien, the operator also tares directly from the cab when changing attachments, so one scale works with grabs, a Big Bag spreader and a load hook.

Why it matters: certified dynamic weighing

Weighing in motion is only half the story. The other half is whether you can trade on the weight. Intermercato’s system is certified and type-approved according to MID for hanging load in motion and meets Swedac’s requirements. Read what certified, type-approved weighing means.

How accurate is it?

Intermercato states that its patented technology makes the weighing accuracy superior and independent of driver and driving style. The exact accuracy of a certified system is defined by its type approval. See How accurate is a material handler scale?

See it on your machine. Explore Intermercato Weighing Systems or contact Intermercato.