 | MEIO AMBIENTE / SEG. DO TRABALHO | PRODUTOS NVH | ENGENHARIA NVH | MANUTENÇÃO PREDITIVA | DMA | DEFESA |  |
PRO-725: Pass-by Noise ISO 362
Automatic measurements according to ISO 362
PRO-725: The complete Pass-by Noise system
The portable system which allows you performing automatic measurements according to ISO 362 standard.
Fully controlled using PDA or Laptop with WiFi built-in, NetdB PRO-725 simultaneously records up to 7 different parameters ready for analysis on the field.
PRO-725 meets your requirements for pass-by noise measurements on the basis of a 4-channel system which performs:
- Audio Signal recording and 1/3 octave analysis
up to 20 kHz - Automatic report of dBA Level and Spectra
vs. position or rpm
This extremely portable system isfully controlled using PDA or Laptop with WiFi built-in and simultaneously records up to 7 different parameters ready for analysis on the field.
Key Features
Standard Set-up
- EN class1 Microphones, Telemetry RPM, Radar position, 2 sets of Light barriers
- All data are recorded are ready for off-line analysis (post-processing)
- Single people operation (driver) using an On-board unit for control and data transmission
A complete tool for data analysis and reporting
- Ultra portable Pass-by noise test system
- Immediate display of dBA levels for the two microphones vs. position, RPM or Speed, and 1/3 octave band spectra at each vehicle position
- 7 variable parameters (2 microphones, 2 photocells, 1 RPM channel, 1 radar pulse count input, 1 throttle position) handled on a 4-channel unit
- User interface and measurement system tailored for the convenience of the test Engineer, reduction of cabling and set-up time
- Ready to use for cabin noise analysis (option)
- All recorded data can be further analyzed and compared, or used for advanced analysis with dBFA software suite (order tracking, transient analysis, etc.)
Options
- FFT, 1/n analysis and Order tracking, Signal editing and Post processing function with dBFA Suite
- CABIN Noise analysis
- Software option for tire noise ISO standard
- Extension for on-board source measurement, synchronous with pass-by data, and correlation for source identification and ranking
- Meteo station and ground temperature
- Center line and lateral vehicle position checking
PRO-725 Technical Specifications
Trigger points
- Light barriers: Photocell/Reflector pairs
- Trigger Point Uncertainty: 40mm
- Operating Range: up to 10m
- Output Delay: <1.3ms
- Power Supply: 12 V DC
Displacement and Speed Transducer
- Type: Doppler Radar
- Displacement Range (Cars): up to 200 m
- Speed Range (Cars): up to 150 km/h
- Operating Frequency: 10.5 GHz to 35.5 GHz
- Doppler Constant: 45.15 Hz/km/h @ 24.15 GHz
- Displacement Resolution: avg. approx. 6.2 mm
- Tuning Fork: Available
- Power Supply: 12 V DC
Sensor Front-End and Control Unit SCS5095
- Trigger Input (Photocell): 2
- Frequency Input (Radar): 1
- Analog Outputs: 1
- Trigger Outputs: 2
- Frequency Outputs: 1
- Photocell Input Range: 10-15 V (Opto-isolated)
- Freq. Response: DC-10 kHz
- Radar Input Range: 7-15 V (Opto-isolated)
- Freq. Response: DC-10 kHz
- Input Connectors: XLR 3 pin Female
- Field / System Status Indicators: 6
- Internal Power Supply: Rechargeable Lead Acid 12V/2Ah
- External Power Supply: 10.5-13.8 V DC
Microphone Preamplifiers
- Size: ½
- Freq. Range (±0.2dB): 2 Hz 200 kHz
- Noise (Lin): <2.5 uVRMS
- Body Length: 77.5 mm
- Connector: LEMO 7 pin male
Microphone Cartridges
- Type: Class 1 - ½ Free-field
- Sensitivity: 50 mV/Pa
- Frequency Range: 6.3 Hz-20k Hz
- Polarization voltage: 0 V (pre-polarized)
- Sound Pressure Limit: 146 dB
- Calibration Certificate: included
Software
- Software Platform: MS Windows 95/98/ME
- Graphical User Interface: User Friendly Menu / popup menu
- Microphone Calibration: Included (Ext. Source needed)
- Acquisition parameters: User selectable
- Real Time Monitor: Included
- Time / Position Conversion: Automatically computed
- Graphical Data Rendering: 1/3 octave
- Multiple Data Average: Included
- Multiple Data Comparison: Available
- Graphical Features: Cursors, Zoom, 3D, Printout, .... and others
- Recorded Data Format: N channels CMG file
- Project/Measurement Information: Microsoft Access based Database
- Analysis Results: Native Database
- Statistics: Automatically computed (option)
- Data Export: Text file
- Report Printout: Standard included, Customizable using Microsoft Word editor
- Backup/Restore: Save/restore group of data into/to ZIP files
- Network ready: Work in a network as file-server application
- Audio playback: Using 01dB dBFA32 software
- Security: User login guarantee data and software protection
Ordering Information:
SCS5095: Pass-By Control Unit
ALIM-AT3: 220Vac/12Vdc-3A Mains Adapter
01dB-Harmonie: Four Channel Acquisition System and Real Time Analyzer
LB-PC: Long Distance Reflective Photocell (2 pieces)
SS039/30: Photocell Cable Drum (30m) (2 pieces)
STAND3-PC: Adjustable Stand with Photocell Mounting Material (2 pieces)
LB-REF: High Efficiency Reflector (2 pieces)
STAND3-REF: Adjustable Stand with Reflector Mounting Material (2 pieces)
G-40AE: ½ Free-Field Microphone (2 pieces)
G-26AK: ½ Microphone Preamplifier (2 pieces)
N-1451: ½ Wind Screen (2 pieces)
SS004/10: High Quality Microphone Cable Drum (10m)
SS004/30: High Quality Microphone Cable Drum (30m)
STAND2-MIC: Adjustable Stand with Microphone Clamp (2 pieces)
NOTEBOOK: Notebook PC for Use with 01dB Harmonie
SCS8500: Dedicated Software Package for Windows 98 (Customized report printouts may be quoted on request).
For more information, please do not hesitate to contact us: nvh@01db-metravib.com
|
© Copyright 2012 - ACOEM
Medições e Analise de Ruidos e Vibrações
