A4400 VA4 Pro II

The Fastest 4-Channel Vibration Analyzer

Do you want to measure 4 AC (vibrations) channels synchronously? Yes, with A4400 VA4 Pro II you can do that and you don't even need any input adapter!

The A4400 VA4 Pro II is a unique analyzer for machinery vibration diagnostics which will fulfill all your vibration diagnostics needs. The A4400 VA4 Pro II includes modules for analyzing, data collecting and vibration signal recording. The device is enhanced by modules for dynamic balancing, measurement of run up and coast down, acoustic measurement mode, ultrasound measurement, monitoring and control of lubrication process and listening to the vibration signal with the stethoscope feature. The instrument is equipped with an expert system developed by Adash, which automatically detects machinery faults.

The A4400 VA4 Pro II is designed for engineers, technicians and researchers dealing with machinery and structural diagnostics as well as dynamic balancing of rotating machinery.

A4400 VA4 Pro Vibration analyzer

Key Features

  • 4 channels simultaneously
  • FFT 3 276 800 lines in real time
  • Frequency range up to 90 kHz
  • 20 hours recording of 4 channels
  • ISO 10816-3 included
  • Bearing database included
  • Input for triaxial sensor
  • ACMT - very low speed bearing analysis
  • User defined frequency bands

A4400 VA4 Pro II Modules

Technical Specifications

Input channels:
4 x AC, ICP® power supply on/off
4 x DC for process values
1 x TACHO for speed probe/external trigger
Input range:
AC +/- 12 V peak-peak
DC +/- 24V
AD conversion:
24 bit, 64 bit internal signal processing
No AutoGain function!
Dynamic range S/N:
120 dB
Frequency ranges (-3 dB):
Maximum range: 0.35 Hz - 90 kHz (1 Ch, 194 kHz sampling)
Maximum range: 0.35 Hz - 25 kHz (4 Ch, 64 kHz sampling)
Minimum range: 0.35 Hz - 25 Hz (4 Ch, 64 Hz sampling)
Sampling mode:
Fully simultaneous for 4 channels
FFT resolution:
Min. 100 lines
Max. 3 276 800 lines
Unit modes:
Analyzer - analytical measurements
Data collector - route measurements
Balancer - 1 and 2 plane on site balancing
Run up - run up and coast down measurements
Recorder - raw signal recording for later post analysis
Stethoscope - listening of the bearing/machine noise
FASIT - expert system for automatic fault detection
Octave analyzer - hearable sound measurements
Bump test - measurement of natural frequencies
ADS - Animated Deflection Shapes (Operating deflection shapes)
Ultrasound - measurement of ultrasound in 30 - 50 kHz range
Colour 1140 x 800 pixels, LCD
Intel Atom 1.9 GHz
Memory, Route:
64 GB, max. 16 GB for one route, number of routes is limited by free
memory only
Data processing:
Real time FFT
ACMT - low speed bearing analysis
Order analysis
User band pass analysis
RPM measurement
DC measurement
Orbit measurement
Raw signal recorder:
64 kHz sampling frequency
4 Ch memory consumption 3 GB/hour
4 Ch total recording - 20 hours
Manual, External, Signal level, Time
Speed change, Time interval
USB 3.0, 2.0 compatible
Operating temperature range:
-10˚C to +50˚C
Battery 8 hours of operation
Aluminium heavy duty
Size & Weight:

280 x 205 x 55 mm, 2200 g


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Data Sheets & Manuals

Data sheet vibration analyzer A4400 VA4 Pro

Data sheet


Manual vibration analyzer A4400 VA4 Pro