Tapping Machine

OVERVIEW

The tapping machine N211 is a lightweight portable impact sound source designed to fulfill the specifications of the standards dealing with impact sound transmission measurements (ISO 140, ASTM E 492, DIN 52210, BS 5821 and ISO 717).

With a PC-based measurement system such as Symphonie or Jazz, and the building acoustics software dBBATI, the weighted impact sound pressure level Ln, WT may be easily calculated.

Made of 5 steel hammers in line, weighting 500 grams each, the tapping machine N211 provides a free fall of the hammers equal to 40 mm, as required by the standards. User-interchangeable rubber tipped hammers for special floors are available as an option.

Installing the tapping machine N211 on-site is very simple. Battery operation ensures a complete freedom of use. The HF remote control allows the user to operate the tapping machine at a distance during a measurement session in order to limit the duration of the impacts.

The tapping machine N211 is delivered with a wireless remote control as well as an operation manual. The battery charger is also included.

 

	standardised
	remote control
	robust
	battery operated

	Power : 220 Volts AC - Working 12 Volts DC
	Electronic control of impact rate
	Battery life : about 1 hour
	Radio control for remote operation
	Weight : about 15 kg
	Dimensions : 810 mm x 330 mm x 320 mm

MECHANICAL FEATURES

	5 steel hammers in line
	Free fall equal to 40 mm (adjustable)
	Tapping frequency : 10 impacts per second
	Time between impact and lift of the hammer less than 80 ms

OPTION