Nor277

Tapping machine

Nor277 tapping machine for precise footfall noise transmission measurements in buildings, fully compliant with relevant international and national standards.

Enables impact noise measurements in accordance with ISO 717-2, ISO 10140-3, ISO 16283-2, ASTM E492, and ASTM E1007, supporting reliable, standards-driven building acoustics assessments.

Integrated self-calibrating function provides consistent, traceable test results and supports long-term measurement stability.

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Self-check

The Nor277 continuously monitors its own performance to maintain full compliance with tapping machine standards. Each hammer is equipped with an integrated laser sensor that measures impact velocity in real time, so the energy delivered to the test floor is precisely controlled and any friction or mechanical misalignment is immediately visible. Dedicated front-panel LED indicators for each hammer confirm when both impact velocity and tapping frequency are within specified limits. This gives the user confidence that the noise generation system operates according to the relevant standards, allowing full focus on the rest of the measurement setup.

Battery operation

The Nor277 can be supplied with an internal lithium-ion battery for flexible use on site. The battery is automatically charged whenever the unit is connected to the mains supply, and a three-step LED indicator clearly shows the current state of charge. Typical charging time is approximately 2 hours.

Wireless remote control

A wireless remote control allows the user to switch the Nor277 on and off from a distance. The radio range is up to 100 m in free field, supporting reliable operation even through most thick concrete structures. In addition, the unit can be controlled via the built-in RS232 interface, enabling wireless operation through standard RS232-to-Bluetooth adaptors where required.

Features

Standards

Specifications

Accessories

Downloads

Features

Impact noise measurements designed to meet the requirements given in ISO 717-2, ISO 10140-3, ISO 16283-2, ASTM E492 and ASTM E1007.
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 and rugged construction.
Low weight 10 kg (22 lb) incl. battery and wireless remote.
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.

Standards

ISO 717-2
ISO 10140-3, ISO 10140-5 Annex E
ISO 16283-2
ASTM E492-22, ASTM E1007:21, ASTM E989:21

Specifications

Hammers: 5 hammers @ 500 g. Effective falling height 40 mm (adjustable)
Tapping sequence: 10 impacts per second, rpm controlled via servo feedback loop.
Power: 84 – 264 V, 47 – 63 Hz
Battery operation: Optional built-in Lithium-Ion rechargeable battery. 7.2V / 2350 mAh / 16.9 Wh
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.
Battery charging time: 2 hours
Power consumption: Less than 30 W
Dimensions (WxHxL):
Feet retracted: 165 x 230 x 495 mm (6.5 x 9.1 x 19.5")
Feet extended: 265 x 230 x 495 mm (10.4 x 9.1 x 19.5")
Add 50 mm to the height for handle.
Weight: 10 kg (22 lb) including battery and wireless remote option

EMC compliance according to EN 50081-1 and EN 50082-1
Safety according to EN 61010-1-1993 and Machine directive 89/392