ABB PFVL142R-10MN High-precision and high-strength ring-shaped weighing sensor

The ABB PFVL142R-10MN is a high-precision, heavy-duty annular load cell part of the Millmate Roll Force System (MRFS).

Designed for the most demanding industrial environments, specifically rolling mills, it utilizes ABB’s proprietary Pressductor® technology to measure massive forces with extreme reliability

Millmate Roll Force Systems

Reliable, long-term solutions for your

roll force measurement

Millmate Roll Force Systems

Introduction

A measurement technology offering high accuracy is a prerequisite today for modern rolling mills. The constant striving

to achieve optimum process quality and the highest possible productivity is the essential goal of modern production

units.

Rolled products are called upon to meet ever stricter demands, and as a consequence so is rolling mill equipment.

A truly measured roll force is crucial in achieving correct roll gap settings, true force distribution from operator side to

drive side of your mill and supervision of the backup bearings and roll eccentricity.

The Millmate Roll Force System incorporates all these essential features.

The Millmate Roll Force load cells act as integral parts of the mill stand. The rock

solid Pressductor® load cell design in combination with the intelligent, reliable com

munication functions are crucial keys to true roll force measurement.

The Millmate Roll Force System consists of a Millmate Controller (MC 400) and

two load cells with matching units. The various types and the wide load range of

Millmate Roll Force load cells cover practically all conceivable roll force measure

ment applications.

The ABB equipment is easy to install and operate. We offer installation support as well

as long-term after sales supply and support. Due to ABB’s extensive experience in the roll

ing mill industry, we can offer out standing application know-how in this particular field.

Pressductor® Technology

and the measurement principle

ABB’s Millmate Roll Force load cells are based on the well

known Pressductor® principle patented in 1954. the magneto

elastic effect, according to which the magnetic properties of

steel are influenced by mechanical forces acting on it.

In the transducer body there are four holes. Two coils at

right angles to each other are wound through these holes.

One winding (the primary) is supplied with an alternating

current; the other winding (the secondary) acts as a measure

ment winding. Since the two windings are at right angles to

each other, there is no magnetic coupling between them as

long as there is no load on the transducer body.

If the transducer body is loaded (as shown in the figure), the

ield pattern changes. The permeability of the steel is reduced in

the direction of the force and increases in the direction at right

angles. The result is a change in the symmetry of the magnetic flux,

so that some of the flux induces a voltage in the secondary wind

ing. The induced voltage is proportional to the load.

The measurement principle is based on the magneto elastic effect, ac

cording to which the magnetic properties of a material are influenced

by mechanical stress. The transducer is magnetized via the primary

coil. A voltage proportional to the applied force is induced in the

secondary coil.