Spectrum 4 Measures Web Speed, Stretch Shrinkage
Strandberg Engineering Laboratories Inc., Greensboro, N.C., has developed the Spectrum 4 Process Multimeter to measure web speed and stretch or shrinkage of textiles, paper, plastics and metal during processing. The portable meter measures webs as narrow as one strand, storing up to 100 data points from multiple machines for downloading to a personal computer (PC). Speed is measured to the nearest 0.1 meter or yard per minute, and stretch or shrinkage to the nearest 0.1 percent.
Spectrum 4 may be used for spot checks or regular quality control audits on web-fed presses,
sizing machines, sanforizers, tenter frames, laminators, and dyeing or finishing ranges, among
other equipment. Contact and non-contact shaft-speed sensors are available, as are sensors to
measure moisture-content, wet-pickup, web surface hardness, point-to-point squeeze and nip roll
pressure, and temperature by contact and non-contact.