When acquiring data in a measurement task that requires multi channel data to be collected in a manner suited to different measurement types .

Let's say you are faced with a measurement task where some channels measure vibration on a fixed frequency range at a sample rate of 2kHz and others are measuring temperature say every 10 seconds. If all your channels are locked together  using the same the data acquisition set up, you must choose the vibration set up for all channels. This is just fine for the vibration analysis, but you are taking a way too much data for your temperature channels.

The solution is to set your Corvus system up with two processes one sampling at 2kHz and the one shot every 10 seconds. You just allocate the relevant channels to their measurement process. The measurement system needs to be able to synchronise all processes so that the data can be displayed live or recorded and played back with all channel data with the correct timing.

There are two levels of Corvus:

  • Corvus Lite - Supports up to 268 dynamic or static (machine variables) channels and up to 2 measurement processes.

  • Corvus Full - Supports up to 1024 dynamic or static (machine variables) channels and up to 8 measurement processes that can be distributed on up to 8 data collection PC's.

Corvus Lite : examples

Process channels 001

Single process

A single process running in a single chassis with up to 268 channels.

Process channels 001

Two processes

Two processes running in a single chassis with up to 268 channels.

Corvus Full : examples

Process channels 001

Two processes

Two processes running in three chassis with up to 1024 channels.

Process channels 001

Four processes

Four processes running in three chassis with up to 1024 channels.

Process channels 001

Six processes

Six processes running in three chassis with up to 1024 channels.

 

A typical large test bed system running Corvus with 6 processes is shown below

Process

Order Tracking

Vibration

 

Vibration 2

Acoustics

Pulsation

Static Process

Number off input channels

48

64

48

32

64

32

Bandwith/Channel

Tracking

1 kHz

5 kHz

20 kHz

10 kHz

1

Sample rate/Channel

64 x RPM

2.56 kS/s

12.8 kS/s

51.2 kS/s

25.6 kS/s

1 S/s

Blocklength/Channel

256

2048

1024

4096

2048

1

Trigger

External

External

External

Free Run

Free Run

Free Run

Corvus is ELSTAR'S general purpose, highly scalable vibration signal analyser.

We have put together a series of packages for Corvus. These are intended as a guide, as Corvus supports a wide range of National Instruments hardware you can configure your system to exactly suite your measurement requirements.

View Corvus Packages

There are several powerful options available for Corvus to assist you in achieving your measurement task.

View Corvus Options
Corvus Supported Hardware

Please click Corvus-7-Supported-Hardware.pdf to download list of hardware supported by Corvus.

Corvus supports a wide range of National Instruments Signal sources as well as:

  • Digital interface to Datatel telemetry systems thus eliminating the need for converting data from Digital to Anallog and then back to Digital format.
  • Interface to HBM QuantumX amplifier.
  • Argus data aquisition System.