Product category:
Testing, analysing and monitoring equipment
News Release from: Rockwell Automation Entek | Subject: Enpac 1200 handheld vibration data collector
Edited by the Engineeringtalk Editorial
Team on 26 July 2001
Vibration data from two inputs
simultaneously
The two channel Enpac 1200 handheld vibration data collector from Rockwell Automation Entek is joined by upgrades to the Odyssey and Enshare software designed to use the enhanced capabilities
Rockwell Automation Entek introduces the two channel Enpac 1200 handheld vibration data collector, and upgrades to its Odyssey and Enshare software designed to use the enhanced capabilities of the new instrument The new Windows CE-based instrument offers significant advantages over existing single channel versions, and firmware to upgrade single channel Enpacs to two channels is available if required
This article was originally published on Engineeringtalk on 11 May 2001 at 8.00am (UK)
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The Enpac 1200, which is ideally suited to demanding environments, can collect vibration data from two inputs simultaneously, providing far more powerful diagnostic capabilities than a single channel recorder.
Because readings of vibration levels can now be taken in two axes, the precise movement of a shaft within a bearing, for example, can be determined.
In a plain bearing, a rotating shaft is separated from the bearing surface by a wedge of oil, and any misalignment or imbalance causes the centreline of the shaft to move in an orbit as it rotates.
This causes vibration, which can be detected by two traditional displacement transducers placed 90 degrees apart in the bearing housing.
The vibration levels are transmitted to a protection monitor panel and recorded by the Enpac via cables plugged in to BNC connectors on the monitor.
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Rockwell Automation Entek's new Entrx is a Windows-based high performance data acquisition, database management and data analysis system for use in portable and online machine condition monitoring
New service makes condition monitoring easy
Rockwell Automation Entek's Reliability Online service now makes it highly economical to take advantage of condition monitoring without up-front expenditure or the allocation of additional manpower
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Sentinel is a rugged low-cost single-channel vibration monitor designed to protect rotating machinery against damage due to mechanical problems.
The shape of the orbit indicates if there is a problem with the rotating machinery and its likely cause, enabling early corrective action to be taken.
A normal orbit would be an ellipse, while a figure of eight shape indicates a shaft misalignment.
An important feature of the new Enpac 1200 is a built in laser tachometer that enables the phase angle of the shaft to be measured at the same time as recording the vibration.
This achieved simply by pointing the laser at a piece of reflective tape placed on the shaft, and requires no other inputs or accessories.
The two channel instrument can also be used to simultaneously collect separate vibration readings from two coupled pieces of machinery, such as a pump and a motor.
The phase of the vibrations indicates the likely source of the problem - vibrations 180 degrees out of phase, for example, indicate that the connecting shaft is misaligned.
The Enpac 1200 can collect data over a range of 0.16Hz to 40KHz, and bearing assessment is carried out using the proven gSE and gSE Spectrum measurements.
Using the latest digital signal processing and the industry's highest resolution A/D converter, the Enpac provides both speed and accuracy of data collection.
The Enpac 1200A features a 1/8 VGA screen and conventional key pad, while the 1200B has a larger 1/4 VGA touch-sensitive screen to control the instrument.
Both are powered by the latest lithium ion, low maintenance batteries.
The data stored in the Enpac 1200 is downloaded to a PC for analysis using Emonitor Odyssey software, Rockwell Automation Entek's next generation of machinery information systems.
Featuring full 32-bit Windows architecture, it integrates a full range of condition monitoring data and bridges the gap between portable and online monitoring systems.
The latest release, Odyssey 2.2, includes an improved method of correlating vibration data that excludes erroneous readings and improves the accuracy of monitoring the changes in vibration levels over time.
Odyssey enables data collected by the two channel Enpac to be analysed and integrated with information from other condition monitoring techniques such as oil analysis and thermographic imaging to build up a full picture of the condition of plant and machinery.
Rockwell Automation Entek has also introduced Enshare 1.2, a new version of its plant asset management software that is able to use the full range of features provided by the two channel Enpac.
Enshare enables manufacturers to establish an asset register, integrate a range of condition monitoring data on those assets, carry out full asset health analysis and reporting and drive corrective action by linking with the enterprise's CMMS maintenance programme.
The launch of the two channel Enpac 1200 and its associated software represents a new dimension in the diagnostic capability of walk around vibration data collection instruments.
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