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DC Motors Power Spectrophotometer

Nondestructive material analysis

A chemical company has ordered 50 control valves. Their task will be to control the supply of a highly corrosive acid in a production process. Whether they can tolerate this liquid depends on the steel alloy from which they were produced. The valve manufacturer wants to make sure and tests the material of the blanks before they are loaded into the CNC machine. Using a handheld LIBS device, this takes just a few seconds. In this process, the optics of the laser-induced breakdown spectroscopy are positioned by a FAULHABER micromotor.

What is my material actually made from? The answer to this question is crucial in many fields, from life sciences and recycling through to incoming goods inspection in the processing industry. Nondestructive material analysis usually uses optical processes such as laser-induced breakdown spectroscopy (LIBS), X-ray fluorescence (XRF) and spectrophotometry. The way in which a material absorbs or reflects the induced radiation provides detailed information about its composition.

In such optical analytical devices, apertures are opened and closed, filters and filter wheels rotated or positioned, and lenses and mirrors focused with micron precision. Micro drives perform all these tasks in a highly complex and confined environment.

For example, in the spectrophotometer, the sample mount moves along the z-axis. It sits on a fine-thread spindle that is driven by a servomotor with a planetary gearhead. A high-resolution, magnetic encoder supplies the controller with the required precise position data which is used to set the optimal path length.

Other optical elements such as filter wheels and shutters place similar demands on the drive. When they are housed in handheld devices, there are even more requirements: Less space is available and the battery operation means that particularly high energy efficiency is needed.

A comprehensive modular system comprising motors, gearheads and encoders of many different sizes and with many different technologies enables FAULHABER to create the optimal drive for optical material analysis devices. Combining this system with our precision lead screws opens up even more extremely interesting possibilities.

DC Motors Power Spectrophotometer
High dynamic positioning
Small size and low weight
High power/torque per volume
Low energy consumption

Drive systems for material composition analysis

Powerful rare-earth magnet
Wide operating temperature range: -30 °C to +85 °C (optional to +125 °C)
All-steel housing with corrosion-resistant coating
Stepper Motors
Cost effective positioning drive without encoder
High power density
Very high acceleration
Planetary Gearheads
Available in all plastic or metal versions
Use of high performance plastic and ceramic materials
Available with a variety of shaft bearings including sintered, ceramic, and ball bearings
DC Motors Power Spectrophotometer
DC Motors
Metrology & Testing
DC Motors Power Spectrophotometer

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