Vibrotek Logo

State of the art automatic condition diagnostic, monitoring, and balancing software


To Vast & Vibrotek Home


eng | rus

DC-21 Data Collector



DC-21 Dual Channel Vibration Analyzer and Data Collector


The DC-21 is a fully digital, two channel, spectrum analyzer and data collector. It is intended to make:

  • Condition monitoring and diagnostics measurements:

    • time wave form (oscilloscope mode)

    • vibration levels in different frequency bands according to ISO standards,
      RMS, true peak, peak-peak

    • peak factor

    • autospectra

    • envelope spectra selected from multiple band pass filters

    • rotation speed

    • amplitude and phase of rotation speed and its harmonics

    • long duration time signal recording

  • Rotor balancing (optional)

    • 1, 2, or 3 plane balancing

    • 8 measurement points

    • balancing using known influence coefficients without trial runs

    • utilities for calculation of trial weights, summing, and splitting weights

    • balancing at multiple operating speeds

  • Test diagnostics

    • RPM/amplitude/phase characteristics during machine run-up/coast down (up to 16 channels simultaneously with optional multiplexer)

    • modal analysis, resonant frequencies, logarithmic decrement (damping coefficient) for certain frequencies (optional)

    • shaft alignment shim calculation from the results of measurements with sensors or from dial indicators (optional)




  • Light weight portable data collector

  • Full route capabilities

  • Accepts inputs from charge and ICP® accelerometers, voltage sensors, clamp-on current sensors, TTL tacho probes and other sensors

  • Transducer signal audio output to earphones

  • Internal power supply for tacho probe

  • Simple, six button operation

  • On-line context sensitive help system

  • Full screen spectrum display during and after measurements, cursor function

  • Digital Signal Processing technology enables fast download of setups and easy firmware upgrades

  • Host computer software for route or database loading and unloading and data analysis is included.

  • Optional software packages for balancing and condition diagnostics

  • Data communication and messaging via external modem


Software Supported

Dream® for Windows - condition monitoring and diagnostics

VBal - rotor balancing


The DC21 is designed to meet all the requirements of our condition diagnostic and balancing software and is compatible with all of our current and future systems. The instrument is expandable in functionality by software upgrades.


ICP is a registered trademark of PCB Piezotronics, Depew, NY.



site map | e-mail

Copyright (c) 1996-2008 Vibrotek, Inc. All rights reserved.

Microsoft is a registered trademark of Microsoft Corporation in the United States and/or other countries.