# L33x Pallet Dimensioning: Measure Black Foil Legal-for-Trade

*Pallet dimensioning for black foil and difficult surfaces*

Dimension black-wrapped pallets automatically. The L33x measures difficult surfaces with three 3D sensors in around 200 ms. Legal-for-trade as L335 under OIML.

Canonical: https://metrilus.com/en/solutions/pallet-dimensioning-L33x

Alternate (de): https://metrilus.com/de/loesungen/palettenvermessung-L33x

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## Black foil defeats many optical measurements

*Why a system for difficult surfaces*

Many terminals have pallets in black stretch foil, glossy wrap or dark textiles. Surfaces like these swallow or scatter the sensors' light. Then it is back to the tape measure, and the pallet waits. With the L33x you dimension exactly this freight automatically. Three 3D sensors capture every pallet up to 260 × 260 × 260 cm, at the same accuracy as the L23x.

## Difficult surfaces at full speed

The L33x measures black-wrapped pallets in around 200 milliseconds. Difficult freight no longer slows your handling, and you manage 300 to 600 pallets per hour including scanning.

**1000 → 200 ms** — measuring time per pallet

## Measure internally or bill legal-for-trade?

*L330 or L335*

For inbound and internal processes the L330 is enough. As soon as you bill by volumetric weight, you choose the L335. It is legal-for-trade under OIML with EU type-examination and NTEP, measuring to ±2 cm in length and width and ±1 cm in height. Even your hardest-to-measure freight ends up reliably on the invoice.

## Stackable or not? Decided at human level.

*Stackability with NSP Detection*

With the optional NSP Detection software module, the L33x checks on every measurement whether a pallet is stackable. NSP Detection decides as reliably as a trained employee, with photos and a comprehensible reason. Our systems measure several million shipments every year. At this volume, even a small error rate in the stackability decision costs noticeable revenue.

## Three installation types, one verified environment

*Installation type and environment*

You mount the L33x on the ceiling, as an A-Shape frame on the floor, or as a Z-Shape over your conveyor. To measure light-swallowing surfaces reliably, the measuring spot needs consistent lighting and background conditions, indoors and without direct sunlight. A touchscreen at the measurement point shows forklift drivers every result immediately. At the same time, dimensions, volume and photos go via REST API, file export or QR code into your WMS or TMS.

[Request a demo](https://metrilus.com/en/contact)

## Performance Characteristics
- **Minimum Dimensions**
  - **Length**: 20 cm / 7.9 in
  - **Width**: 20 cm / 7.9 in
  - **Height**: 10 cm / 3.9 in
- **Maximum Dimensions**
  - **Length**: 260 cm / 102 in
  - **Width**: 260 cm / 102 in
  - **Height**: 260 cm / 102 in
- **Measurement Accuracy**: OIML: ± 2 cm (length/width) / ± 1 cm (height) · NTEP: ± 0.5 in (length/width/height)
- **Measuring Time**: ~ 200 ms
- **Resolution (Display)**
  - **330**: 1 mm
  - **335**: OIML: 2 cm (length/width) / 1 cm (height) · NTEP: 0.5 in (length/width/height)
- **Operational Throughput**: 300 – 600 pieces/h (incl. scan, depending on the process)

[Datasheet PDF](https://metrilus.com/datasheets/EN-Technical-Datasheet-L33X.pdf)

[NSP Detection data sheet (PDF)](https://metrilus.com/datasheets/EN-Technical-Datasheet-NSP.pdf)

[Product one-pager PDF](https://metrilus.com/one-pagers/EN-One-Pager-L33X.pdf)

## Frequently asked questions (FAQ)

### When do I need the L33x instead of the L23x?

As soon as your freight mix includes surfaces the L23x rejects, such as black stretch foil, glossy wrap or dark textiles. The L33x measures the same object sizes at the same accuracy, using three 3D sensors. If only part of your freight is dark-wrapped, you combine both product lines on separate lanes.

### Is the L33x legal for trade?

Yes. The L335 is legal-for-trade under OIML with EU type-examination and additionally NTEP-certified. That lets you bill volumes measured on difficult surfaces with confidence.

### Which objects can the L33x measure?

Pallets and freight items from 20 × 20 × 10 cm up to 260 × 260 × 260 cm, including free forms. Black-wrapped and glossy surfaces are explicitly covered.

### How accurate and how fast is the L33x?

±2 cm in length and width, ±1 cm in height under OIML. A measurement takes around 200 milliseconds, and you handle 300 to 600 pallets per hour including scanning.

### Which installation types are available?

Ceiling mounting saves floor space and is the most common choice. A-Shape is a free-standing frame on the floor and the preferred installation type with the NSP module, which detects non-stackable pallets. Z-Shape mounts over a conveyor.

### What are the site requirements?

The system needs consistent lighting and background conditions at the measuring spot, indoors and away from direct sunlight. Only then does it measure light-swallowing surfaces reliably.

### How does the data reach my WMS or TMS?

Via REST API, file export (CSV, XLSX, PDF) or QR code, plus up to four photos per measurement. Triggering happens automatically, by barcode or through the API.