non-retractable gauge (foil mill)

XR Centreline
Thickness Measuring System

The XR centreline thickness measuring system detects material thickness in the centre of strip by means of continuous, non-contact, real-time measurement.

With this XR centreline thickness measurement, a single x-ray source mounted in the roller table underneath the material is used to focus radiation on the measurement area. A detector unit with a task-based number of ionisation chambers is installed above the material to receive the radiation that passes through the material. The ionisation chambers convert this residual radiation into electrical signals, which are then used to calculate and record the exact thickness of the material.

centreline thickness measurement

Special Features

customisable design and software
automatic calculation of alloy correction
remote maintainability
key components, such as measuring transducers and ionisation chambers (detectors), are developed and manufactured by IMS Messsysteme GmbH, Germany
compact x-ray generator incl. x-ray controller:
- high shock and vibration resistance
- maintenance-free / low-maintenance high-voltage connectors
- easy to maintain

do you have any questions?

#IMS Expert

Christian Knackstedt,
Dipl. Engineer

“Meeting the constantly increasing market requirements for product quality and its complete documentation is a constant challenge (...)

…for you as a specialist for cold rolling mills. One part of your solution here is offered by our innovative and high-precision measuring systems for the cold strip sector, which have proven that they measure and detect lastingly and reliably even under the most adverse environmental conditions.

How challenging and different such environmental conditions as well as the tasks assigned to you as the responsible person can be is something I am well aware of, not only theoretically but also practically, from more than 20 years of working for IMS. I started out as a systems engineer in the field of software and commissioning. Today, in the position of Global Sales Manager, I am your IMS expert for measuring systems in the cold strip sector.

Making measurable what can be measured is part of our corporate philosophy. The “how” in your particular case is as much my challenge from the moment you contact me as it is yours. My personal benchmark is your constant high product quality and – especially – your equally constant trust out of conviction in the performance of our measuring systems.”

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non-retractable gauge

XR Centreline
Thickness Measuring System

Technical Information

Material data (typical for aluminium hot rolling mills)

Typical thickness range:

> 0 up to 180 mm

Speed:

720 m/min, but not limited to

Width:

up to 4,300 mm, but not limited to

Measurement system data

Gauge type:

fixed mounted, non-traversable measuring point

Radiation source:

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

Measuring dynamics

Analogue time constant:

10 ms

Cycle time data processing:

10 ms

Cycle time data output:

10 ms

Measuring accuracy (2 sigma values)

Linearity:

0.05 %

Long term drift (10 hrs):

0.1 %

Reproducibility:

0.07 %

Statistical noise (10 ms):

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

Measure.Inspect.Detect.

Product Catalogue for Aluminium Rolling Mills

Learn more about the product portfolio of our high-precision measuring systems for aluminium hot strip rolling mills and cold strip rolling mills
Standard systems for measurement and detection of slab dimension, thickness, thickness profile, length, width, temperature, speed, 2D surface inspection as well as various special systems
Special designs possible on customer request