IMS Messsysteme GmbH, Germany - Multi-channel profile gauges in hot strip mills

Multi-channel gauges

Content		Use and technique
		Measured variables
		System design
		Technical specifications

Use and technique

The cross strip thickness profile is determined
from the measurement signals provided by an
array of detectors measuring simultaneously and
in parallel across the width of the strip.
The number of detectors is determined mainly
by the maximum strip width.

The x-ray sources are mounted in the top arm of
the c-frame and the detectors in the bottom, at
right angles to the strip flow direction.

Multi-channel, hot strip

The arrangement of the detectors and x-ray sources is such that any two adjacent detectors are
illuminated by radiation from different angles.

This measuring channel arrangement is essential for the determination of the cross-strip thickness profile
and strip contour measurement. The whole C-frame is made to oscillate in the cross-strip direction at a
constant frequency of 1.5 to 2 Hz. This ensures that thickness measurement takes place over the full strip width.

We can measure
the following

- Strip center line thickness
- Cross-strip thickness profile, wedge and edge drop
- Strip contour
- Strip width
- Longitudinal and cross-sectional
- Temperature profile

System design

- C-frame with integrated x-ray technology
- Central signal processing using a multi-processor computer system
- Data link to the customer control, optimisation and quality assurance level
- Operation and visualisation interfaces
- Product data archiving
- Remote maintenance facility
- Quality management
- Cooling system for the measuring frame

Technical specifications Measuring point
Radiation source:	Metal-ceramic x-ray tubes
Tube voltage:	140 kV
Measuring time constant:	2 ms
Data acquisition time:	500 µs
Gauge performance data Center line measurement
Measuring accuracy:	< ± 0.1 %
Statistical noise (2s):	< 0.1 % (T = 5 ms)
Cross-strip profile measurement
Measuring accuracy:	< ± 0.1 %
Profile, crown, wedge, edge drop:	< ± 0.1 %
Statistical noise (2s)	< ± 0.1 % (T = 500 ms)
Strip width
Measuring accuracy:	± 1 mm

If you require further information or product description, please telephone
or E-Mail us. We shall be pleased to provide further assistance.

IMS Messsysteme GmbH
Dieselstraße 55
D-42579 Heiligenhaus

Phone: +49 2056 975 0
Fax: ++49 2056 975 140

E-Mail: info@ims-gmbh.de
Internet: www.ims-gmbh.de