AUTOTEST eNOISE

Noise measurement made easy.

The eNoise is a hand-held, stand-alone portable instrument for the measurement and analysis of sound pressure level emitted by stationary vehicles at a nominated engine speed. Input parameters include engine type (no of strokes) and no of cylinders. These can be pre-programmed for 2 or 4 stroke and 1 to 8 cylinders

Features

  • The AutoTest® eNoise is a hand-held, stand-alone portable instrument for the measurement and analysis of sound pressure level emitted by stationary vehicles at a nominated engine speed.
  • A uniform approach ensures that vehicle owners will get an accurate assessment of whether their vehicle complies with national noise standards.
  • This noise emission standard for motor vehicles adopts the UN Economic Commission for Europe (UNECE) Regulations for motor vehicle noise.
  • The Stationary Exhaust Noise Test Procedures for In-Service Motor Vehicles was first prepared by the Motor Vehicle Environment Committee (MVEC, the precursor to LTEC) in 1999 to introduce a national approach to measuring exhaust noise. Previous to this, some jurisdictions had developed their own approaches and the differences in these approaches could have led to inconsistencies in test results.
  • The UNECE regulations refer to ISO 5130 “Acoustics – Measurement of Sound Pressure Levels Emitted by Stationary Road Vehicles” which provide the noise testing procedures for in-service vehicles.

Aplication

  • The Stationary Exhaust Noise Test Procedures for In-Service Motor Vehicles was fi rst prepared by the Motor Vehicle Environment Committee (MVEC, the precursor to LTEC) in 1999 to introduce a national approach to measuring exhaust noise.
  • Previous to this, some jurisdictions had developed their own approaches and the differences in these approaches could have led to inconsistencies in test results. A uniform approach ensures that vehicle owners will get an accurate assessment of whether their vehicle complies with national noise standards
  • This noise emission standard for motor vehicles adopts the UN Economic Commission for Europe (UNECE) Regulations for motor vehicle noise. The UNECE regulations refer to ISO 5130 “Acoustics - Measurement of Sound Pressure Levels Emitted by Stationary Road Vehicles” which provide the noise testing procedures for in-service vehicles

Specification

Applicable Standards

  • Class
    • Class 1 : International Electrotechnical Commission Publication IEC 61672-1 Ed. 1.0 (Billingual 2002): Electroacoustics - Sound level meters - Part 1: Specifi cations
    • Calss 1: Australian Standard AS IEC 61672.1-2004: Electro acoustics - Sound level meters - Specifications
  • Type
    • Type 1: International Electrotechnical Commission Publication IEC 60654 (1979) “Precision sound level meters”
    • Type 1: Australian Standard AS 1259.1-1990 “Acoustics - Sound level meters - Part 1: Non-integrating”
No Desciption Tech data
1 Measured Parameter Sound pressure
2 Frequency Range 63Hz to 10kHz
3 Dynamic Range 80dB
4 Max Sound Pressure Level 120dB
5 Level Ranges 60 - 100dB, 70 - 110dB, 80 - 120dB
6 Frequency Weighting A
7 Measurement Time 1.0s in SPL Test / 1.5s in Engine Speed Test
8 Displayed Parameters SPL / RPM
9 Input Parameters Required No. cylinder, No. stroke
10 Power Supply Rechargeable battery pack (automatic power off below 10%) “Battery Flat” displayed
11 Operating time 9 hours continuous
12 Microphone 7.5mm electret, frequency range 20Hz - 20kHz
13 Display 240 x 160 pixel full graphics display
14 Keypad 40 keys alphanumeric tactile membrane keypad
15 Weight 0.4kg
16 Physical Dimensions 230 x 95 x 50mm
17 Temp/Humidity Range 0° - 60°C / 20% - 90%