An in-motion dimensioning system measures the length, width, and height of parcels and packages while they move along a conveyor belt — without stopping, slowing, or manually handling each item. Packizon’s Dim L2 conveyor dimensioner captures L×W×H in milliseconds at full line speed, enabling accurate dimensional weight billing, carrier compliance, and WMS data enrichment at every throughput rate your operation demands.
What Is an In-Motion Dimensioning System?
An in-motion dimensioning system uses structured-light laser arrays or stereo-camera technology mounted above and beside a conveyor to scan each package as it passes through the measurement frame. Unlike static dimensioners that require an operator to place a package on a platform and trigger a scan, in-motion systems integrate directly into conveyor lines and measure automatically — no human intervention, no line stoppages.
The system captures three-dimensional envelope data (the tightest bounding box around the package), calculates dimensional weight using the carrier’s DIM divisor, and pushes the result to your WMS, TMS, or shipping platform in real time. Every parcel is measured. Every charge is accurate.
Why High-Throughput Operations Need an In-Motion Dimensioning System
Fulfilment centres, parcel hubs, and 3PLs processing hundreds or thousands of packages per hour cannot pause a line for manual measurement. The consequences of skipping dimensioning at speed are significant:
- Carrier correction charges — FedEx, UPS, and USPS automatically re-measure packages at their hubs. If your declared dimensions are missing or wrong, you receive a chargeback, often 30–40% above the quoted rate.
- Unbillable dimensional weight — if you’re billing customers on actual weight alone for large, light parcels, you’re absorbing the carrier’s DIM surcharge from your own margin.
- Incomplete item master data — your WMS needs accurate L×W×H to assign correct pick locations, optimise cartonisation, and route orders to the right packing station. Missing dimensions create system gaps at scale.
- Compliance exposure — NTEP-certified dimensions are required for legal-for-trade billing. Without certified measurement, invoices can be disputed and carrier accounts flagged.
An in-motion dimensioner solves all of these at throughput rates that manual scanning or static platforms simply cannot match.
Packizon Dim L2 — Conveyor Dimensioner
Packizon’s Dim L2 is purpose-built for in-motion dimensioning on standard parcel conveyors. It mounts above the belt and requires no floor space beyond the conveyor footprint itself.
Key Specifications
- Measurement accuracy: ±2 mm on all three axes
- Throughput: up to 1,500 packages per hour (belt speed dependent)
- Package range: 50 mm × 50 mm × 20 mm up to 800 mm × 600 mm × 600 mm
- Weight integration: inline scale data merged with dimensional data in a single record
- Certification: NTEP-certified for legal-for-trade use (Certificates of Conformance available)
- Integration: REST API, SOAP, OPC-UA, and direct WMS connectors (Manhattan, Blue Yonder, SAP EWM, Extensiv, ShipStation)
- Trigger: automatic (photocell or barcode scanner trigger)
The Dim L2 captures the full package envelope including any irregular shapes, poly mailers, and non-rigid parcels, outputting the conservative bounding box carriers use for DIM weight calculation.
How an In-Motion Dimensioning System Works
When a package enters the measurement zone, a photocell or barcode scanner triggers the Dim L2’s laser array. Multiple structured-light planes illuminate the package from above and both sides simultaneously. The system captures the point cloud in under 100 milliseconds, calculates the bounding box, and outputs L×W×H to the connected scale and WMS before the package exits the measurement frame.
The process is entirely automatic — no operator interaction, no package placement, no trigger button. The conveyor continues at normal speed throughout. Each scan record includes timestamp, barcode (if scanned), dimensions, weight, calculated DIM weight, and carrier billing weight.
Industries and Use Cases
E-Commerce Fulfilment
High-velocity pick-and-pack operations processing mixed SKUs need every outbound parcel dimensioned at pack or sort. The Dim L2 integrates at packing stations with a short conveyor run, or at sorter induction points where all parcels pass through anyway.
3PL and Parcel Hubs
Third-party logistics providers billing clients on dimensional weight need certified data for every shipment. In-motion dimensioning at induction captures data once, populates all downstream systems, and provides the audit trail for billing disputes.
Returns Processing
Returned parcels are rarely in their original packaging and almost never have accurate dimensions on file. Routing returned items over a conveyor dimensioner rebuilds the dimension record automatically before putaway or repack — no manual re-measurement needed.
Courier and Last-Mile Depots
Regional depots receiving inbound manifested freight use in-motion dimensioning to verify declared dimensions against actual measurements at acceptance — catching discrepancies before the parcel enters the network rather than after delivery.
In-Motion Dimensioning System WMS and Carrier Integration
The Dim L2 pushes measurement data to your systems in real time via REST API or direct database connector. Standard integrations include:
- WMS: Manhattan Associates, Blue Yonder, SAP EWM, Extensiv 3PL Central, Deposco
- Shipping platforms: ShipStation, ShipBob, EasyPost, Shippo
- Carrier systems: FedEx Ship Manager, UPS WorldShip, USPS Click-N-Ship Business
- TMS: MercuryGate, McLeod, Oracle TMS
Every measurement record is stored locally and synchronised to the cloud, providing a queryable audit log for carrier billing disputes, client invoicing, and compliance verification.
Book a Conveyor Dimensioner Demo
See Packizon’s in-motion dimensioning system measure packages at your line speed in a live demonstration. Our team will assess your conveyor layout, throughput targets, and WMS environment to recommend the right integration configuration. Contact Packizon to schedule a demo or request a quote.