Automated Volume Measuring in Warehouses – All You Need to Know!

Properly applied volume-measuring systems help delivery companies verify customer-provided package data, optimise valuable transit and storage space, and automate invoicing. Benefits include reduced costs and improved efficiency.

How do volume-measuring systems work?

Most popular devices use the time-of-flight principle: a sensor emits a parallel or fan-shaped laser beam that packages reflect. The system measures the time it takes the laser to return to the sensor, and builds a three-dimensional image of each item through the motion of the parcel on a conveyor, or the sensor above the parcel. Using these images, it determines a parcel’s height, width and length before calculating its volume.

Systems that use more than one sensor build multiple three- 20 unit: dominoqq pkv  by scanning parcels from different directions. This enables them to measure the volume of cuboid parcels more accurately, and process irregularly shaped (non-cuboid) items by calculating the smallest cube that will enclose them.

Modern distribution centres and post depots process regularly and irregularly shaped parcels at the same time. In these cases, the system automatically distinguishes cuboid and non-cuboid items before measuring them.

What are certified systems?

Certified volume-measuring systems meet the requirements of European, Canadian and American Approval Institutes, and companies can use the acquired data to produce legally binding invoices. Certified systems are fast becoming standard in today’s logistics industry.

Which conveyors are compatible?

Modern volume-measuring systems are compatible with most conveyors, cross belt sorters, and tilt tray sorters with wooden, asymmetric or black trays running at speeds of up to three metres per second. When operating above sorters, they identify the type of tray and differentiate it from the parcel before calculating volume.

Previously, the shape of sorter trays confused volume-measuring systems. This meant every conveyor feeding a sorter required its own unit, which was very expensive. Now, a single unit over a sorter serves multiple infeed conveyors, reducing costs and simplifying maintenance.

Is it possible to measure the volume of flat objects?

Modern systems are highly accurate, generally calculating the volume of cuboid items with an accuracy of 5mm x 5mm x 5mm, and non-cuboid items with an accuracy of 10mm x 10mm x 10mm. Therefore, it is technically possible to determine the volume of near-flat objects.

However, for certification purposes regulatory authorities require the specified minimum object dimensions be ten times the measuring accuracy. Using the examples above, this means 50mm x 50mm x 50mm for cuboid items and 100mm x 100mm x 100mm for non-cuboid items.

Can volume measurement detect defective parcels?

Yes, certified systems with two or more sensors can detect flaws in parcels, such as holes or dents. This enables operators to remove defective items immediately and send them for repair or disposal.

Installation issues

The more room there is around the conveyor the simpler the installation. However, suppliers are flexible and produce customised solutions suitable for applications with limited space. Indeed, it is possible to direct laser beams onto parcels using a mirror.

Some companies choose to install volume-measuring systems themselves. This is perfectly practical and comes at a low cost. Others prefer their supplier to install the system for them. This is ideal for businesses with time constraints.

No matter who carries out the installation, an on-site test conducted by an official of the gauging office is required to certify a volume-measuring system.


Most modern distribution centres and post depots use automated volume measuring systems. They reduce the need to handle parcels manually, optimise and speed up deliveries, and simplify associated billing. This means postal services and logistics spend less, and can provide a better service to their customers