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Nor277: Tapping Machine
Noise sources / nor277
nor278_Nor278: Reference sound source for Sound Power measurements
nor276_Nor276: Dodecahedron Loudspeaker

Nor277: Tapping Machine

For making footfall noise transmission measurements in buildings as set out in International and National Standards.

  • Impact sound transmission testing according to ISO 10140-5. ISO 16283-2 and the old ISO 140-6, -7,-8 as well as ASTM E492-04 and ASTM E1007-04e1
  • Determination of single number quantity index Ln,w, in accordance with ISO 717-2 and ASTM E-989
  • Remote operation from hand switch or PC
  • Mains or battery operation
  • Powered from 85-264 volt AC main supply. Built in Lithium Ion rechargeable batteries.
  • Battery capacity: Typical 1 hour with intermittent use and 45 minutes of continues operation.
  • Battery de-rating: <5% loss in capacity per 100 discharge/charge cycles.
  • Charging time: 2 hours
  • Compact
  • Low weight 10 kg (22 lb) incl. battery and wireless remote option
  • Rugged construction
  • Five hammers each having a mass of 500 g falling from a height of 40 mm (adjustable)
  • Tapping sequence of 10 impacts per second, rpm controlled via servo feedback loop
  • Built in self check of hammer fall speed, and tapping sequence.
  • Retractable feet
  • Dimensions feet retracted: 165 x 230 x 495 mm
  • Dimensions feet extended: 265 x 230 x 495 mm


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