XR Triple-Head

Thickness Profile Measuring System

Thickness Profile Measuring System

The XR triple-head thickness profile measuring system measures strip thickness and the thickness profile continuously and in real time.

The upper beam of the C-frame of the triple-head thickness profile measurement contains a task-based number of ionisation chambers to receive the radiation from the x-ray tubes installed in the lower beam. The ionisation chambers convert the thickness-dependent quantity of x-rays that pass through the material into electrical signals, which are then used to calculate the exact thickness of the material.

The centre measuring head of the system supplies the data for control (AGC) of the mill stand. The traversing outer measuring heads determine the thickness at the edges of the material for calculation of the important wedge and crown values.

continuous thickness measurement in the centre of the roller table

continuous measurement of the strip thickness profile by counter or synchronous traverse of the edge mea-suring heads

measurement of width and centreline deviation

calculation of wedge and crown values

faster cross-profile acquisition compared to an XR Twinset measuring system

permanent guarantee of centreline thickness measu-rement with the option to select the measuring head at will

Special Features

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XR Triple-Head

Thickness Profile Measuring System

Thickness Profile Measuring System

Technical Information

Material data

Typical thickness range:

> 0 mm up to max. 180 mm

Speed:

> 0 – 12 m/s

Width:

up to 4,300 mm

Measurement system data

Gauge type:

movable c-frame

Radiation source:

X-ray tube (approx. 180 kV/ 2.5 mA, depending on the measuring task)

Measuring dynamics

Analogue time constant:

approx. 10 ms

Cycle time data processing:

10 ms

Cycle time data output CL:

10 ms

Cycle time data output profile:

after full cross profile scan (depending on strip width)

Measuring accuracy

Reproducibility:

≤ 0.07%

Linearity:

≤ 0.05 %

Long term drift (10 hrs):

≤ 0.1 %

Statistical noise (10 ms):

≤ 0.1 %, not better than ±10 μm (for the max. thickness range)

IMS Measuring Systems for Aluminium Rolling Mills

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IMS measuring systems for hot rolling mills