The development of the first strip thickness gauge worldwide, that could measure the thickness of the strip during the rolling process in cold mills with an accuracy of µm, was the start of our company in 1963.
Vollmer America
Non-Contact Strip Thickness Measurement
X-ray and isotope gauges work with a air gap of 120 to 400 mm (even greater on request). Their application is possible in all environments.
Advantages
Low maintenance, cross profile measurement possible.
Specific plus of our non-contact gauges
Extremely narrow design (120 mm C-frame width), enabling a design as a retractable C-frame even with limited space.
The design version with control residing in a PLC type S7 offers the advantages of an open system and a flexible integration.
X-Ray and Isotope Gauges – Leaflet for download (German/English)
X-Ray Gauges
Particularly low noise
The low noise (0,08 %) enables the best measurement results even with high-speed strip and short integration times (10 ms and less). Particularly helpful if periodically recurrent strip thickness variations are to be detected by an FFT Analysis in the case of short wave lengths.
Very small measurement spot (diameter 5 – 10 mm)
The small measurement spot (5 mm, for example) is good for a highly accurate measurement even with high-speed units, enabling the finest resolution of the cross profile to the strip edge.
Isotope Gauges
Easy construction – almost maintenance free
The measurement spot diameter of 40 mm is not as small as with the more powerful X-ray gauges, but still relatively small compared to other versions of isotope gauges.
Low noise even with integration times of 50 ms. Specific feature: Tungsten drawer for the isotope source.
What's New
VIP 08 On Line Optical Flatness Measurement and Control System
VIP 08 On Line Optical Flatness Measurement and Control System
The VIP 08 Optical Flatness Measurement System is a recent development for use in the metal producing industry. When the strip tensions are lower than 70 N/mm2 (10 KPSI), it affords the user the ability to measure continuous strip flatness without contact to the strip and [...]
First Isotope Thickness Gauge Application in Mexico
During this past fall, we installed our first two – Model A3000 Isotope Thickness Gauges in Mexico. The application was for stainless steel on a heavy-duty reversing mill with 24/7 operation.
Quality and Yield Optimization on Cold Rolling Mills
In order to accommodate for the high demand in accuracy, quality and yield, it is essential to optimize the existing operating equipment. In the past Vollmer has supplied and been known for their high performance thickness gauges in conjunction with the automation of the screwdown system.
News & Events
BFI Article shows new design for shape roll measurement
The well-proven BFI version shape measurement roll has undergone a design change that improves its ability to measure the tensions profile on flat product without marking the strip. The detectors have been redesigned to fit into the roll while leaving the surface of the roll completely clear of machined marks. This eliminates the former problems associated with the axially installed sensors.