The production of paper is a complex and dynamic process. Paper production machinery must be precisely adjusted to match the requirements needed for the type of paper being processed. Regardless of the production speed and machinery size, paper mills harbour the same interest – efficient and profitable production processes.

Modern measurement technology for machine maintenance
Important areas where PRÜFTECHNIK measurement technology is put to use include:       

• Paper machines       
• Stock preparation       
• Power generation

The condition monitoring of the many roll bearings in paper machines is vital. Depending on the state of the machinery and the extent of the diagnosis, the evaluation techniques range from simple evaluation of parameters to the more complex envelope analysis. Measurement points in paper machines, especially those in the hot dry end and not readily accessible are monitored using a linked up multi-channel online system (VIBROWEB). Likewise, all auxiliary aggregates that are important to the production process such as stock preparation pumps, vacuum pumps and ventilators are fitted with online systems (VIBNODE). Handy high performance portable data collectors (VIBSCANNER, VIBEXPERT) are used at measurement points on subsidiary auxiliary aggregates.

Parallelism of rolls in a paper mill has a decisive influence on product quality and procedural safety. Using PARALIGN, an exceptional roll alignment system with inertial measurement technology, measurements taking days using conventional methods are handled in a fraction of the time. In addition to inertial measurement technology, laser based systems are used to determine and optimize machine and component geometry. These include:       

• Alignment of rotational axes (ROTALIGN Ultra)       
• Measurement of flatness and levelness (LEVALIGN Ultra)       
• Measurement of straightness (OPTALIGN smart Straightness)

The limited space within paper machines imply that mechanical power transmission takes place through cardan shafts. PRÜFTECHNIK provides specialized brackets used in the alignment of cardan shafts.