Paper Schmidt Hammer

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PaperSchmidt is a rebound test hammer designed specifically for paper roll hardness testing.

Irregular rolls and other defects such as corrugations and telescoping are caused by non-uniform paper roll hardness profiles are a major cause of lost production for both producers and converters alike. A reliable measurement of the roll hardness profile is of critical importance in deciding whether a roll is good or bad. Production staff needs to be able to test quickly and reliably and to interpret the results as efficiently as possible. It has an extended lifetime to cope with the heavy demands of the paper industry and dedicated tools, such as pre-defined tolerances that make assessing a profile a simple matter.

Software: The Windows based software Paperlink, developed by Proceq SA, makes it possible to download, present and edit data measured by the PaperSchmidt in a fast and easy way using a PC. This allows the user to quickly check the roll profile against user defined tolerances. It also allows the user to define roll identifier names for batch testing and download these onto the hammer. All data can be exported to third party applications.

System requirements:  Windows XP, Windows Vista • USB-Connector • An internet connection is necessary for software and firmware updates when available.

  • Impact Energy 0.735Nm
  • Hammer Mass 135g
  • Spring Constant 0.262 N/mm
  • Spring Extension 75mm
  • Dimensions of Housing 55 x 54 x 245mm (330mm to tip of plunger)
  • Dimensions of Tip 94 x 15mm dia Weight 648g 
• Paper rolls • Film rolls • Foil rolls
• TAPPI T 834 om-07 (2007)
• Sensitivity and repeatability to a degree unmatched by conventional roll testers. Dedicated firmware allows instant analysis of the data on the instrument’s display • A vastly improved service lifetime compared with traditional instruments • Intuitive operator interface (displaying hardness, profiles, limits, roll IDs, etc. • Automatic reloading and automatic data storage allows the fastest possible test performance.