Thickness Gauge USM-200
for Synthetics, Paper, Metal, Fleece, Coatings, etc.

As a result of a lengthy R&D program, MeSys developed a new method (patented) for weight and thickness measurements of thin films. The measurement range of this method is 0 - 500 grams per square meter (0 to 500 microns) with an accuracy of 0,5% of the measured value.

The new method is designed for non-contact traversing measurements of thin material layers in industrial process control and quality assurance applications. It can be used for all kinds of materials such as paper, plastics, aluminum, fleece, layerns, etc. The sensor module is characterized by extreme robustness against industrial environments.

With the USM-200, MeSys provides a thickness measurement device for web widths up to 10 meters. Very high web transport and traversing speeds are enabled by a scanning frequency of 100 measurements per second. the measurement spot has a diameter of 5 mm. Via a special evaluation method even the smallest production defects can be identified. In measuring mode, the measurement clearance is >20 mm (standard is 40 mm) and is much larger than with comparable methods.

The new USM-200 measurement system from MeSys closes a gap in the measurement range of previously known systems MCS-32 and PCS-32 which are also of the non-contact, non-radioactive type but cover the range from 60 microns to 50 mm.

 

Ultrasonics:
Absorption is measured

Scanner Description

The construction of this compant and very light measurement frame was modelled and optimized with a finite element method analysis. Aluminum profiles with lateral reinforcement are used as bearing elements; a special mechanical design lends the frame extreme stability in combination with low weight. Frame lengths up to 10 metres are available in combination with the new, patented, lightweight sensor system. Through the hermetically sealed construction, the frame is protected and resistant against harsch conditions in the industrial environment. The measurement carriages move along a highly precise linear track and are driven by a stepping motor via a toothed belt. Up to 12 sensors for various traversing measurements can be integrated on the measurement carriage. A built-in computer takes over the control and measurement recording directly in the frame; external wiring is not necessary. Various versions based on the standard model are made possible through the flexible “smart frame” concept of the measurement frame. The open system architecture allows integration in future machine and process control systems.

COMPAct USM-200

The scanner includes PC, LCD Monitor and a sealed membrane keyboard. No terminal is needed. The intuitive user interface allows simple operation of the system as well as display and analysis of all measurement data directly on the measurement frame. Various peripheral devices or system controls may be connected via network (TCP/IP).

MODule USM-200

The measurement frame operation and display takes place on an external unit/terminal with built-in monitor and keyboard. Distances up to 100 metres are possible via a bus system. Optionally, additional systems can be running parallel to one another.

Method of Measurement:

The material to be measured is locally oscillated. The transmission and reflection of this oscillation varies, depending on the grammage and the thickness of the material. The oscillations are measured by an appropriate sensing system and evaluated by a high-speed microcontroller. For ease of explanation, it can be assumed that the oscillation amplitude is inversely proportional to the grammage at the measuring point. Any noise and environmental impacts are eliminated through intelligent logic control. As an additional performance characteristic, the relative measurement acuracy remains constant with decreasing thickness, resulting in a higher absolute accuracy.