Introduction

OXYGEN´s order analysis option can be used for analyzing noise and vibration of rotating machines providing the following features:

  • Order analysis from 60 rpm to 100.000 rpm

  • Up to 1000 speed steps

  • Order resolution selectable from 0.01 to 1

  • FFT-windowing and overslapping

  • Amplitude output as RMS, Amplitude or Peak-Peak

  • Adaptive AAF for order domain analysis

  • Order extraction of selected orders

  • Overall RMS channel

Benefits:

  • Gapless analysis

  • Order analysis with angle-based resampling and adaptive anti-aliasing filter

  • Simultaneous analysis in order and frequency

  • Simple configuration

Installation and Licensing

The order analysis option is automatically installed with every Oxygen R5.x (December 2019) and abopve. Once installed, the option needs to be licensed (if not done by FDEWETRON factory already) and activated.

The license can be updated under the System Information tab (see Fig. 1 ). This requires a *.lic-file provided by DEWETRON. A license uodate requires a restart of Oxygen.

Updating the OXYGEN-linsence

Fig. 1 Updating the OXYGEN-linsence

Required Hardware Channels

The OXYGEN order analysis option requires three diffrent input sugnals: a speed channel [rpm], an angle channel[°], and an input signal for analysis. The speed and angle information can be acquired from the test object using a tachometer sensor or an encoder, for example. Common input signals for order analysis are vibration or sound signals maesured with accelerometers and microphones.

To acquire the signal form a sped sensor (tacho or encoder), a counter (CNT) hardware channel is required. The following TRION-boards provide one or more counter channels:

  • TRION-CNT: 6 channels for encoders (A,B,Z output) or tacho sensors (single output)

  • TRION-BASE: 2 channels for encoders (A,B,Z output) or tacho sensors (single output)

  • TRION-TIMING or TRION-VGPS: 1 channel for encoders (A,B,Z output) or tacho sonsors (single output)

  • TRION-1802/1600-dLV: 2 channels for encoders (A,B,Z output) or tacho sensors (single output)

  • TRION(3)-18x0-MULTI: 2 channels for tacho sensors (single output)

  • TRION-2402-dACC: 2 channels for tacho sensors (single output)

  • TRION-1620-ACC: 1 channel for tacho sensors (single output)

  • Chassis controller: 4 channels 2 can be used for encoders (A,B,Z output) and 2 support tacho sensors (single output)

OXYGEN automatically calculates both rotation speed and angle from a speed sensor signal based on the sensor input and the OXYGEN counter software settings.

If the order analysis uses an IEPE acceleration signal or airborne sound from a microphone, an IEPE-anabled hardware channel is required. The following TRION modules support IEPE mode:

  • TRION(3)-18x0-MULTI

  • TRION-2402-dACC

  • TRION-1620-ACC

  • TRION-2402-MULTI

  • TRION-2402-dSTG

If the signal for which the order anlysis shall be determinated is coming form a strain gage sensor, a bridge input provideed by one of the following TRION-boards is required:

  • TRION(3)-18x0-MULTI

  • TRION-2402-MULTI

  • TRION-2402-dSTG

For further hardware specifications, please refer to the latest version of the technical reference manual of the TRION series modules avaulable on the CCC-portal https://ccc.dewetron.com/ .