Blog

Is Your Vibration Analysis Pointed in the Right Direction?

April 10, 2018

With the proliferation of online monitoring systems utilizing permanently mounted sensors, users will need to beware of “direction sensitive” vibration and possible sudden unexpected failure due to insufficient data. The thought of insufficient data may seem incredible when thinking of constantly monitored equipment, but consider the all too common (imho) practice of uni-directional (one direction) […]

All About Arc-Seconds

April 3, 2018

An arc-second is a measurement unit for angle. It is often used in describing level and plumb. 1 arc second = 1/3600 degree = 0.000278 degree =0.0000048 inches/inch =0.0048 mils/inch = 0.0048 mm/m 1 degree = 17.347 mils/inch 1 mil/inch = 1 thou/inch = 1 mm/m (The metric-imperial relationship is purely a coincidence!) A high […]

Don’t Let your Equipment/Machinery Get a High

March 27, 2018

While the person in charge of collecting vibration data is actually collecting the data, they should watch the data “live” for unusually high amplitudes or discontinuities in the data. This will not increase the data collection time, and if any of these issues are detected, the person can evaluate whether or not the data is […]

Is a “Mil” or “Thou” The Same Measurement?

March 20, 2018

“Mil” and “thou” are the same. They are imperial measurements both are synonyms for 0.001 inches.  This unit is normally referred to as a “thou” (which is short for a thousandth), or (particularly in the United States) a mil. Mil has its origins from metric prefix “milli”, which is Latin for “one thousandths”.  Plural of […]

Create a Compressed Air Leak Management Program

March 13, 2018

Why We Ignore Leaks Compressed air is a misunderstood utility. As such, it tends to be misused and even abused. Leaks continue to be the biggest problem; often overlooked because they are difficult to detect, don’t smell bad, don’t make a mess on the floor, and rarely stop production. The Real Cost of Leaks One […]

"It’s Too Late Baby Now" Technically Speaking

March 6, 2018

♫ And it’s too late baby now, it’s too late; though we really did try to make it. Something inside has died and I can’t hide and I just can’t fake it…♫ So go some of the lines of the old Carole King hit from 1971. Unfortunately, that pretty well sums up the situation for […]

LUDECA Repair and Calibration Laboratory Awarded ISO/IEC 17025:2005 Accreditation

February 27, 2018

LUDECA is proud to announce the formal accreditation of its calibration laboratory in Doral, FL to the ISO/IEC 17025:2005 standard (LUDECA Accreditation No. 92835. Certificate No. L17-560.) This means that you, our customers, can rest easy in the full confidence that your valuable EASY-LASER and PRUFTECHNIK laser alignment and condition monitoring systems are being calibrated […]

The Importance of Vibration Analysis

February 20, 2018

In today’s fast-paced competitive business world, manufacturers are seeking every competitive advantage they possibly can to increase their production and minimize costs while maintaining product quality. The identification of defects within a machine, reducing equipment failures and unscheduled downtime is increasingly demanded of condition monitoring technologies. Vibration analysis has proven to be one of the […]

Could’a – Would’a – Should’a in Facility Maintenance Industry

February 13, 2018

How many facilities only collect vibration data when it doesn’t interfere with other activities? So often collecting and analyzing data is only one part of a given person’s responsibilities and workloads dictate that the collection and/or analysis take a back seat. When this happens, machine problems are not detected and therefore not reported for corrective […]

When “Square, Level, Plumb and True” Come Together in Rotating Machinery Installation

February 6, 2018

In rotating equipment installations, there are many tools employed by the concrete pouring team, the baseplate fabricator, the rotating equipment installer, the pipe fitter, the alignment team, etc., to get the job the done as effectively and efficiently as possible. “Square, plumb, level and true” is what allows those teams to work together.  “True”means something […]

My Spectrum Does Not Indicate Misalignment so my Machine is Aligned, Right?

January 30, 2018

Condition Monitoring Expert Tip #9 by Mobius Institute No, sadly, that may not be correct. If the spectrum (and phase readings) indicate misalignment, then the machine will be misaligned. But if there is no indication of misalignment, the machine may still be misaligned. I know that may not make sense, but unfortunately it is true. […]

Quick Tip to Help Locate Compressed Gas Leaks

January 23, 2018

Using ultrasound to locate compressed gas leaks is relatively easy, but it occasionally it can present some challenges. The reason ultrasound is so successful is that it is a high frequency, short wavelength signal that does not like to penetrate 2nd mediums. While performing compressed gas leak inspections, keep in mind that strong ultrasonic signals […]

Why Do I Need to Use Time Waveform Analysis?

January 16, 2018

Condition Monitoring Expert Tip #7 by Mobius Institute Spectrum analysis provides a great deal of information about the health of rotating machinery. But you should consider the spectrum as a summary of the vibration within the machine. The Fast Fourier Transform takes the time waveform and computes how much of each frequency is present and […]

Ultrasound Finds Worn and Misaligned Couplings

January 9, 2018

Simon is a condition monitoring specialist from a local oil refinery. He contacted my office for advice about predicting flexible coupling failures. Currently, they perform basic vibration analysis on their pumps and motors using an overall meter. They have some success predicting bearing failures but the same cannot be said for couplings. Several unexpected failures […]

Sheave Alignment is not All! Remember Belt Tension!

January 2, 2018

Belt alignment is extremely important, and we recommend you do it with a good laser alignment system such as the Easy-Laser XT190 or the DotLine Laser system. But, once the alignment is done, equally important is set the belts to the proper tension. Typically, the correct tension is one that allows the belt to be deflected […]

I use a Laser Alignment System, so I am Performing Precision Alignment, Right?

December 26, 2017

Condition Monitoring Expert Tip #10 by Mobius Institute No, sadly, that is not right. Unless the person has been properly trained, and unless the company has specified precision alignment tolerances, and unless the training is followed and the tolerances are achieved, then you are not performing precision alignment. We see this as a very common […]

Why Do I Need to Use Phase Analysis?

December 19, 2017

Condition Monitoring Expert Tip #6 by Mobius Institute The vibration spectrum can provide clear indication of certain fault conditions, but when you see a large peak at the running speed (1X) what will your diagnosis be? What if you also see peaks at 2X and 3X? Now, if you are monitoring a large fan with […]

7 Things to Do when Using an Induction Heater for Bearings, Sleeves, Couplings, Crane Wheels and Gears

December 12, 2017

Make sure the surfaces of the vertical posts are clean. Improve the contact between the vertical post and the crossbar by applying a light coat of Vaseline or grease to the contact surface of the vertical post. The temperature probe should always be placed on or as close as possible to the inner race or […]

Which is the Best Bearing Fault Detection Technique?

December 5, 2017

Condition Monitoring Expert Tip #5 by Mobius Institute Now this is a tricky question to answer… We have a few contenders: high frequency vibration analysis, regular vibration analysis, ultrasound, oil analysis, wear particle analysis, and infrared analysis. Let’s start by ruling a few of them out. Infrared analysis is used to detect heat in a […]

Guidelines for Proper Belt Installation including Sheave Pulley Alignment

November 28, 2017

Belts are a critical part of the design and function of belt-driven equipment. The majority of belts never reach their intended design life due to improper selection, storage and installation. Unfortunately, this results in compromised equipment operation, lost capacity and increased costs. Do not condemn your equipment to death through improper belt installation practices. Below […]