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frf modal analysis bump test motor - bump test machine - bump test pump - natural frequency bump test
Modalhammer Set
Measurement Microphone
0.5 Hz to 100 kHz
USB DAQ
IEPE DAQ Systems
Order Analysis - Order Tracking Filter
Rotor Dynamics
Impedance Tube for Sound Absorption and Transmission Loss Measurement
Sound Absorption

PC measurement technology - USB data acquisition - NVH analysis

NVH measurement for education, industry, research and development

ROGA Instruments offers systems for data acquisition and analysis.
 
We develop hardware and software for demanding measurement, monitoring and analysis tasks for science, research and development as well as for industrial purposes – all from a single source.
 
ROGA-Instruments produces IEPE measurement microphones and digital IEPE USB sensor conditioners.
 
Here you will find system solutions for sound measurement technology and vibration measurement technology, modal analysis, general measurement technology and special applications, sound analysis, vibration analysis, long-term and high-speed measurement data acquisition, secure measurement data storage, real-time analysis, vibration monitoring, control applications and regulation applications as well as machine control.
 
Get a first overview of ROGA Instruments’ services here.

High SPL Microphone Calibrator 180 dB

In this presentation, I demonstrate how high-level measurement microphones can be tested to their limits using the CA935.

The CA935 can be used to test all 1/4″, 1/2″, and 1″ microphones.

Industrial customers can send us their microphones for maximum SPL verification for a calibration fee of 280 euros plus shipping costs.

Please contact us to schedule a calibration appointment.

In this presentation, I demonstrate the use of the free FFT analysis software “Visual Analyzer” in conjunction with our RogaDAQ 384.
 
Specifically, I show the calibration of the measurement chain, which consists of the FFT analysis software, a measurement microphone, a USB data acquisition unit, and a microphone calibrator.
 
Subsequently, an ultrasonic source is captured using the measurement microphone.
In this presentation, I demonstrate how you can use the NVH Analyzer software to perform vibration analyses on rotating machinery, gearboxes, and generators as a function of rotational speed. Subsequently, order analyses can be applied, and the filtered vibrations can be listened to as a function of rotational speed.

Noise Levels in dB(A) vs. Loudness in Sone

Meaningful Psychoacoustic SI Units:
 
  • Loudness Level phon vers time
  • Loudness Level sone vers time
  • Sharpness acum vers time
  • Loudness Level phon vers speed
  • Loudness Level sone vers speed
  • Sharpness acum vers speed
  • Specific Loudness
  • Open Articulation index vers time
  • Open Articulation index vers speed

USB Measurement Card With and Without Anti-Aliasing Filter

This presentation explains the difference between measurement cards with and without anti-aliasing filters.
 
In this example, a 30 kHz signal is input.
 
The USB measurement card without an anti-aliasing filter incorrectly measures a 14 kHz signal at full energy.
 
Data acquisition without an anti-aliasing filter is unsuitable for dynamic sensor signals and leads to measurement errors.

High Sound Pressure Level Measurement

High SPL measurement microphone system according to MIL-STD-1474E.

This presentation illustrates a high-level microphone measurement using the LTTsmart NVH SET at a sampling rate of 1 MHz with 24-bit ADC resolution.

It includes the necessary anti-aliasing filters and IEPE sensor power supply.

Infrasound - Structure-borne sound measurement

In this presentation, I will demonstrate how infrasound and low-frequency building vibrations can be measured using a seismic accelerometer.

The measured structure-borne sound source, with a frequency of 80 Hz * 60 seconds, with 4800 rpm, is a NAS fan located in the corner of a building.