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Sensors [clear filter]
Tuesday, May 14

10:30am EDT

Universal Vibration Sensor Mount
The present paper describes universal vibration sensor mount devices for attaching sensors to the machinery. Some types of machinery vibration sensors need to be mounted in a particular orientation relative to the machine being monitored. One example is two-axis and three-axis MEMS accelerometers used to detect machine-critical acceleration vector components. Another example is sensors with side connectors or cables whose orientation is restricted by space limitations. In many instances, vibration machinery sensors constructed as could be mounted using a central bolt that going throw the sensor body threads into a bore on the machine body. Such sensors are usually more expensive that similar sensors with solid body. In some cases, proper sensor orientation is achieved by simply gluing the sensor to the machine body. This makes it difficult to remove the sensor if it needs to be replaced. There are also proprietary sensor mounts designed for specific sensors, but these lack versatility. We designed the universal sensor mount that can be used to mount a wide variety of machinery sensors at precise orientations. The idea here is that sensor module mounting member is locked in a selected rotational position using the adjustable locking member. The sensor module is attached to the universal sensor mount by threading the sensor module onto the sensor module mounting member until tight. A determination is made whether the sensor module is substantially aligned with one or more reference axes of the machine. If not, the sensor module is detached from the universal sensor mount. The sensor module mounting member is unlocked and rotated to another selected rotational position that will substantially align the sensor module with the one or more machine reference axes. The sensor module mounting member is then relocked in another selected rotational position and sensor module is reattached to the universal sensor mount.


George Zusman

President, VMS, Inc.

Tuesday May 14, 2019 10:30am - 11:00am EDT
Freedom Ballroom V

11:00am EDT

Successful Vibration Monitoring of Variable Speed Equipment
Variable speed assets such as VFDs and low-cost DC Drives are becoming increasingly common across a wide range of industries and applications, with significantly greater process control and enormous cost savings two driving benefits. The challenges these assets present to the vibration analyst, however, are equally significant.
This presentation will cover the data issues before moving on to discussing available tools and solutions, including the benefits and limitations of using advanced techniques such as time synchronous averaging and precise order tracking.


Scott Dow

Training Manager, Support & Sales Engineer, SPM Instrument

Tuesday May 14, 2019 11:00am - 11:30am EDT
Freedom Ballroom V

11:30am EDT

Electrically-improving a MEMS Sensor for Rolling Stock
This paper describes work related to improving the electrical performance of an accelerometer-based sensor, RotoSense™, used for monitoring rolling stock: the locomotives and cars used in trains. At the 2018 MFPT conference, a paper, “Improved RotoSense™ for Rolling Stock: Locomotives and Cars,” focused on physical improvements to the sensor, although there were improvements in signal performance. This paper describes subsequent improvements to that sensor, with focus on signal quality and battery life. The original version of the sensor described in this paper is the first and, still, only known to survive, intact, three days of testing at the National Test Track Center in Pueblo, Colorado, including a 10-hour, non-stop, 400-mile test run. The rationale, the methods, and the results of those electrical improvements are presented in the paper.

avatar for James Hofmeister

James Hofmeister

Distinguished Engineer, Ridgetop Group, Inc.

Tuesday May 14, 2019 11:30am - 12:00pm EDT
Freedom Ballroom V

1:30pm EDT

Piezoelectric vs MEMs: Future of the Vibration Sensors
The paper presents a detail comparison between the traditional piezoelectric and MEMs based vibration sensors. The future prognoses of what technology and where will be used in the future is discussed.


George Zusman

President, VMS, Inc.

Tuesday May 14, 2019 1:30pm - 2:00pm EDT
Freedom Ballroom V

2:00pm EDT

The Effect of Accelerometer Attachment Method on the Accuracy of Vibration Detection
The attachment of accelerometers is typically accomplished by magnetic mount, wax,_x000D_
glue, screw-mount, or a hand-held technique. This paper present the results of careful_x000D_
laboratory study of the resulting accuracy of the vibration values across a broad frequency_x000D_
spectrum, based on both impact testing as well as shaker testing in a laboratory environment._x000D_
The magnetic mount and had-held techniques are much more convenient than attachment_x000D_
with screws or glue, but have been shown in various studies to result in tapping on_x000D_
uneven surfaces, and in general to lose frequency response above 500 Hz, at frequencies_x000D_
still very much of interest in machinery diagnostics. This is detailed in ISO 5348. _x000D_
However, the authors demonstrate that the combined use of wax with either the _x000D_
magnetic mounting technique or the hand-held method can provide surprisingly accurate _x000D_
readings for most practical applications.

avatar for Bill Marscher

Bill Marscher

President & Technical Director, Mechanical Solutions

Tuesday May 14, 2019 2:00pm - 2:30pm EDT
Freedom Ballroom V

2:30pm EDT

Low Power Wireless Triaxial Vibration Sensor Design - Prototype Review
Attend a maintenance or reliability conference today and you can't fail to miss the many vendors offering wireless sensors for condition monitoring. Wireless sensor networks offer a way to expand the practice of CBM by making more condition data from more machines available for analysis. Triaxial Solid state semiconductor MEMS accelerometers enable low power wireless vibration sensors by easing the design of the signal processing, digital interface and power management with techniques not easily implemented with traditional technology. This presentation will describe a very low power vibration sensor based on a triaxial MEMS accelerometer.

avatar for Ed Spence

Ed Spence

Managing Director, THe Machine Instrumentation Group
Ed Spence is the Founder and Managing Director of The Machine Instrumentation Group, a collaborative network of CBM product and service providers helping machine makers develop their own CBM instrumentation.From 2008 to 2018, Ed was the Marketing Manager for Analog Devices MEMS Sensor... Read More →

Tuesday May 14, 2019 2:30pm - 3:00pm EDT
Freedom Ballroom V
Wednesday, May 15

9:00am EDT

Oil Analysis for Condition Monitoring in an IIoT Era
Often referred to as the life blood of equipment, Lubrication and Oil Analysis can provide a great deal of information on the condition of equipment, as well as serve as a leading indicator of the future condition of the equipment. Oil analysis can detect lubrication related defects in rotating machine including abrasive wear, oil contamination, viscosity loss, additive content loss, water ingress and more. Historically, oil analysis is performed by periodic sampling with analysis done away from the machine in a laboratory environment. With the advent of new sensing technology, online oil monitoring is now possible and provides real-time condition indicators of oil and machine health.
This presentation begins with a introduction to oil analysis and the machinery defects it can detect. It is followed by explanation of route, and online techniques for oil analysis for condition monitoring. An example using predictive analytics is provided, along with a short survey of oil analysis sensors.

avatar for Preston Johnson

Preston Johnson

Platform Lead, Allied Reliability Group

Wednesday May 15, 2019 9:00am - 9:30am EDT
Freedom Ballroom V

9:30am EDT

Case Study - Wear Debris in Industrial Gearboxes
Wear debris sensing technology has in the past been limited to using particle counts to detect faults. Current advancements in particle sizing, particle sensing range, and algorithm improvements have allowed more advanced approaches to detect faults more reliably. Further, these advancements now allow wear debris sensors to be used as a feedback loop for life extension actions. This presentation will use real industrial gearbox data to show how changes in operation and other actions impact gearbox failure rate.

avatar for Mark Redding

Mark Redding

President, Poseidon Systems
Mark Redding is President and Co-Founder of Poseidon Systems, LLC. He has spent most of his career developing advanced PHM tools and technologies to monitor the reliability of equipment for aircraft, heavy machinery, processing equipment, marine, mining, and power plants. After selling... Read More →

Wednesday May 15, 2019 9:30am - 10:00am EDT
Freedom Ballroom V