Radar Width Measuring System

Radar Width Measuring System

The radar width measuring system consists of two columnar system units positioned outside the roller table on opposite sides of the material to be measured.

Each unit of the radar width measurement has a radar sensor in which electromagnetic waves are generated and which are emitted by means of an antenna. The radar beams of both units are aimed at the outer edge of the material. A part of the electromagnetic waves emitted is reflected by the material and received by two further, identical antennas.

The radar waves are frequency modulated. The difference in frequency between the radar waves emitted and received thus results in the distance to the reflection point or the exact distance to the material.

measurement of material width

measurement of centreline deviation

Special Features

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Radar Width Measuring System

Radar Width Measuring System

Technical Information

Material data

Typical thickness range:

> 5 up to 400 mm


> 0 – 3 m/s


up to 4,000 mm

Measurement system data

Gauge type:

radar unit


radar sensor, carrier frequency 60 GHz

Measuring dynamics

Cycle time data output:

≥ 1 ms

Measuring accuracy


≤ 0.1 %

Long term drift (10 hrs):

≤ 0.05 %

Measuring accuracy:

≤ ± 0.5 mm

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IMS Measuring Systems for Hot Rolling Mills