DVW / DVO Round­ness Meas­ur­ing Sys­tem

Why DVW / DVO?

DVW (pivoting) and DVO (oscillating) devices extend the capabilities of ODAC® laser gauges by enabling precise, non‑contact inline measurement of geometric characteristics such as profile height, width or diameter, ovality, roundness, minimum, maximum in round products. Designed for steel, cable, and plastic extrusion applications where products may twist or rotate, these devices ensure accurate dimensional capture regardless of product orientation.
By continuously rotating the ODAC® measuring head around the product, DVW/DVO eliminates the influence of twist and misalignment, delivering true dimensional values in real time. This results in improved product quality, reduced scrap, and more reliable process control, even in challenging production conditions where consistent alignment cannot be guaranteed.

• Twist‑independent measurement: Accurately captures true height, width, min/max, and roundness regardless of product rotation, twist, or position in the measuring field.
• Flexible oscillation control: DVW pivoting angles from ±2.5° to ±10°; DVO offers up to ±50° adjustable oscillation angles for optimal measurement coverage and alignment.
• Robust, low‑maintenance design: DVW operates without additional electronics, powered via the USYS® processor the ODAC® is connected to; DVO features a standalone self‑contained system with electronics, DC motor control and external power supply, engineered for reliability in harsh environments.
• Seamless integration: Fully compatible with ODAC® laser gauge families and USYS® processors or CI-1J processors for easy Fieldbus connection to PLC or similar control systems.

Proven per­form­ance world­wide

DVW and DVO systems are trusted worldwide in demanding applications such as cold rolling, precision profile production, and flat and sector cable extrusion lines. Installed across a wide range of industries, they reliably eliminate twist‑induced measurement errors where conventional inline measurement alone reaches its limits.
Their proven mechanical simplicity, robust construction, and seamless compatibility with ODAC® laser gauges make DVW/DVO a dependable solution for continuous production environments. From specialized manufacturers to large-scale industrial operations, users rely on these systems to ensure accurate dimensional measurement, improve product quality, and maintain stable processes, regardless of product orientation or line conditions.

Fre­quently asked ques­tions

What’s the difference between ovality and roundness?
Ovality is the difference between the maximum and minimum diameters of a round product assuming an elliptical shape, while roundness (circularity) describes how closely the entire shape matches a perfect circle. DVW/DVO helps capture true geometry by accurately capturing the relevant diameter measurements regardless of product twist angle.

Why are DVW / DVO systems needed with ODAC® laser measuring gauges?
Standard inline measurement can be affected by product rotation or misalignment. DVW (pivoting) and DVO (oscillating) systems rotate the ODAC® laser gauge, to accurately capture the relevant measurements independent of product orientation.

How do DVW and DVO differ?
DVW uses a fixed symmetrical pivoting angle (up to ±10°) and requires no additional electronics, while DVO offers a wider, adjustable asymmetrical oscillation range (up to ±50°) with a motorized drive for more flexible measurement coverage.

Can DVW / DVO measure non-round or complex profiles?
Yes. DVW/DVO is specifically designed for profiles where dimensions such as height, width, and min/max values must be measured accurately, even when the product twists or cannot be perfectly aligned.

Do DVW / DVO systems require precise product alignment?
No. One of the key advantages is that they eliminate the need for perfect alignment or guiding, reducing setup complexity and ensuring reliable measurement in real production conditions.

What maintenance is required for DVW / DVO?
Both systems are fully self-contained and designed for low maintenance and long service life. DVW is a very basic device with a DC motor, while DVO uses control electronics with a DC motor drive and external power supply. Both are suitable for continuous industrial operation.