Tagged With "test"

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Vibration Analysis CATIII Practice Test

RE-Engineer ·
Hello I am looking for a copy of a practice exam that Vibration Institute provides in its their workshop before the exam. If anyone has a copy please message me. I am not looking for the questions published in the their website. Thanks,
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Which tests are worthwhile

Rodney Bartell ·
Looking at implementing some testing of spare motors. Which tests does anyone recommend as worthwhile?
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Possible resonant frequency problem on direct couple overhung fan

Dustin Faust ·
I am dealing with a medium sized direct coupled overhung fan unit. 85KW motor. The unit is roughly 7 years old (PDM program is new here, I have 6 years experience). Unit was checked for the first time on 3/30/2017 with an overall amplitude of 0.08 in/sec (0-peak) at 1200 RPM on the Motor non drive end horizontal. Unit checked again on 5/12/2017 had an amplitude of 1.14 in/sec (0-peak) at 1500 RPM on the motor non drive end horizontal. Velocity spectrum showed a very high 1X RPM peak. A...
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Performing vibration testing on shiping container gantry cranes.

Sarah M ·
Hello everyone, A general question on testing hoist motor and gearboxes on gantry cranes. A question came up about testing hoists with simply the lifting cradle or having a moderately loaded container on it to get a true reading of motor and gearbox vibration readings. Now along with the same line would it be a better or more consistent method of reading vibration in the same direction rather then having the load coming up or down? Historically all the readings have been done with simply the...
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VA level 3 Test Mobius Institute

! ! Shabir Ahmad KHAN® ·
Hi all I am to appear in VA-3 test after few days. Would you guys tell me how to perform well in test and pass with good marks. Any tips or suggestions.
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Vib Institute CAT 2 Vibration Test

Huddle_House ·
Hello, I'm not sure if this is the correct area for this topic, but does anyone have any notes or practice tests for the CAT 2 Vibration test by Vibration Institute? Any help would be appreciated...thank you. Huddle_House
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standard for induced motor vibration

aziz58 ·
dear all i face to approve or reject of free run test for 6 kv motor. i am looking for standard to find acceptable level of overall vibration for free run test of motor upon power and rotating speed. iso 10816-3 suggest a table according to coupled machine overall vibration but i want for unloaded motor best regrads
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Placement of vibration sensors for strobic fans

James Karl ·
Good morning- I'm wondering if anyone could give me some feedback on how they are doing vibration analysis on their strobic fans. Of course, you mount the probes as close to the motor bearing as possible. That's easy to do for the motor non drive end bearing, not as easy to do for the motor shaft end bearing (the motor is vertical mount, direct connected to the fan wheel. My installations sit high high above the roof, have no access platforms whatsoever and have never been tested (very poor...
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basic of ultrasound testing device

aziz58 ·
i am looking for text book about basic of ultrasonic .applications and theory of Technic. best regards
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VI Category II Vibration Analysis Course in Bangalore

Narendra Murthy ·
Category II Vibration Analysts are qualified to perform basic vibration analysis using single-channel instruments according to established procedures, set-up instruments, and maintain a database of results. Minimum Experience Required : 3 years Minimum Training Hours: 38 hours Overview: This course prepares attendees to perform basic machinery vibration analysis on industrial machinery using single-channel measurements, with or without triggers signals, according to established and...
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Liquid ring vacuum pump performance testing

KIRAN PILLAI ·
Please explain the procedure for vacuum pump performance testing by orifice method. How to size the orifice for testing.
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HDPE Thickness testing

BrianDR ·
Hi Is anyone doing any in production thickness testing on HDPE tailings lines? If so what process are you using?
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Vibration Analysis Certification Exam Preparation Analyst Category I: Condition Monitoring

Shurafa ·
Vibration Analysis Certification Exam Preparation Analyst Category I: Condition Monitoring Press Release Amazon has listed Part 4 of Vibration Analysis Certification Exam series. Part 4 focuses on Condition Monitoring. The Preparation Package for Certified Vibration Analyst Category I is a unique study guide for ISO students interested in ISO 18436-2 CVA Level 1. The package is primarily designed for Cat I, but students and instructors of Cat II and III benefited from the package to...
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Vibration Exam Preparation- Question Banks

Shurafa ·
Vendor Warning Part 1 of " Exam Preparation Package for ISO 18436-2 Certified Vibration Analyst Category I: Principles of Vibration " is a new book designed for practitioners to prepare for and pass the ISO vibration analysis certification. This part focuses on the first part of the Standard BoK: Principles of Vibration. For years, analysts have been asking for practice questions to review their training materials and strengthen their understanding before the exams. Now, Cat I Prep I...
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Test stand vibration

tcvib ·
We have a motor test stand that I have a question about. We have had a motor that is failing our vibration acceptance tests here. Our spec for overall in .06 in/sec. The motor in question has been sent to the shop and measured good. The issue is that we run this motor at 480V instead of 2300V nameplate voltage. We normally run these motors at low voltage with no issue. The test bed is "isolated", but we have vibration to the floor up to .08 in/sec. We have .03 in/sec Vert and Axial and .12...
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Test Bed Motor and Blower

Avinash Thawani ·
I have motor and blower currently the noise is 100 db.I want to reduce the noise, can you please advise how to remove the noise. Please find picture attached.
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Difference between pore blockage and laser test for particle count.

WVJoe ·
Our plant has recently initiated particle count as part of our oil analysis. Some of our samples have been analyzed using the laser method and recently samples have been analyzed using the pore blockage method. Is there any difference in accuracy? Can I compare the two results as apples to apples? The reason I ask is that the pore blockage results seem to indicate significantly lower ISO codes than the laser method results for gear boxes that share very similar conditions.
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Surge Test for new machinery installation at site

vikramdeeps ·
Hello Guys , For new machinery installation at site do we really need to do the surge test at the site?
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Test requirement of coupled motors in a new petrochemical plant construction site.

Ratheesh ·
Respected members, I have two queries regarding the new motors which are factory coupled to the pipeline with in a package equipment..This is in a petrochemical plant construction site. 1)What are the pre-start up testing requirement?Can you give the standard reference for this?We have done winding resistance and megger test on these motors.Is it mandatory to check vibration for the factory aligned coupled motors at site?We dont have any vibration test record from the factory. 2)If vibration...
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Help with problem on Cat II test

Huddle_House ·
I am no stranger to vibration but was studying over this information for my upcoming CAT II test and ran across this problem that I cannot understand how they got the answer... it seems so simple but I have yet to find out how to work it out correctly. Can anyone help me to see how they arrived at this answer?
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Problems with TPI UltraII

PillarofIN ·
I am having data transfer problem with Test Products International UltraII vibration monitor and C-TrendII software. My monitor syncs with the software and fill a sync folder. No readings appear in the software. The nest time I try to sync...
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performance test

aziz58 ·
hi dear all   i m looking for special software for evaluation and asset performance analysis for gas turbine,compressor,pump ,fan,..that i can insert our process parameter to insure all equipment work at best efficiency .   best regard
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Qualification of Pumps in a System

mech39 ·
Hello all,   We had taken a pump out of service due to leakage problem in one of its gaskets. Now, after maintenance, we want to test/ qualify it before installation. My question is; 1. What criteria will be used for its qualification? e.g....
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Valve Test Rig

mech39 ·
Hello,   We have performed some maintenance work on a weld neck globe valve. The valve was removed from the system. Now we intend to test the valve before we install it in the system. However, we are having problem in holding the valve,...
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PdMA RIC Test Bad Rotor

Chris184 ·
How many have experience with the PdMA tester and would you suspect a motor with the attached test results to look like the photos. We performed a single phase rotor test and had almost 20% current swing while rotating the shaft, so the fact of a...
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Vibration Analysis Certification Exam Category I Fault Diagnosis Question 11

Shurafa ·
What is your answer to the below vibration question and *** why ***? This page is from "Fault Analysis and Correction". Part 5 of Vibration Analysis Certification Exam Preparation Package: https://lnkd.in/eKv4TyF Drop me a private message, if you are interested in more details about purchasing the booklets. Regards- Ali M. Al-Shurafa # certification # rotatingequipment # conditionmonitoring # vibrationanalysis # reliability # machinery # machines # vibration # diagnosis
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Impact Testing - Frequency Range

Mile High_PumpFE ·
Hi Guys, I have a boiler feed pump that has a very speed specific 3x VPF peak of which approaches 5.5 G's. This peak is out at around 1595 HZ. I use the medium sized PCB Modal hammer that I think everyone who takes vibe data has (sorry, I don't know the model number off hand) which comes with the 4 tips.... brown, grey, red, and black (Black being the hardest). This peak certainly behaves like resonance.... very directional and speed specific. I have even considered the possibility of...
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Transformer Management 1 PLUS

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Transformer Management 1 Plus

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Transformer Management 1 PLUS

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Transformer Management 2

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Vibration Analysis Certification Exam Practice Question -- Fault Diagnosis and Correction Q 151

Shurafa ·
Vendor Warning What improvements or critique can you put on this practice question? Is it suitable for Level I Vibration Analyst? This question is from CAT I PREP I Vibration Analysis Certification Exam Practice Question 151 on -- Fault Diagnosis and Correction-- for Certified Vibration Analyst Category I. For more details about the series, visit the Amazon series page : https://www.amazon.com/gp/bookseries/B07MD9PG71/ref=dp_st_1644150093 Regards- Ali M. Al-Shurafa
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Transformer Management 1

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Transformer Management 1

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Transformer Management 1 Plus

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Transformer Management 1 Plus

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Vibration Analysis Certification Exam Practice Question 073 from Fault Diagnosis and Correction

Shurafa ·
Vendor Warning Vibration Analysis Certification Exam Practice Question 073 on --Fault Diagnosis and Correction-- Again comments and suggestions are welcome to challenge and improve this question from Part 5. CAT I PREP I series primarily targets Level I certification however many readers and instructors found it of great help for Cat II and III. Feel free to share the post. For more details about the series, visit the Amazon series page: ISO Vibration Analysis Certification Exam Regards- Ali...
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Re: Test Bed Motor and Blower

Walt Strong ·
Add suction and discharge ducts to outside the room/building. If still too noisy, then add suction and discharge silencers. How quiet do you want it? Is the dB value an overall A-weighted level or something else? Where did you make the measurement? Do you know anything about acoustics and noise control? If not, then consider hiring an expert! I do noise control. Walt
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Re: Test Bed Motor and Blower

Avinash Thawani ·
Hi, This is placed in open space so no use putting a duct. Kindly advise what other changes i can do.
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Re: Test Bed Motor and Blower

Walt Strong ·
Why are you operating fan without ducts? Certainly cannot do fan performance tests, so perhaps you are making a short run for vibration test or balancing? What is duration of operation? Can you put fan in a noise controlled enclosure or build one around it? Sound level can be reduced by reducing speed, but pressure and flow are also reduced. There are some methods of "quiet fan design", but you would need an R&D project to develop it. You can always use personal hearing protection or...
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Re: Test Bed Motor and Blower

Avinash Thawani ·
I plan to reduce the speed of the motor so the fan speed is reduced.
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Re: Test Bed Motor and Blower

Dan Timberlake ·
I too am curious what testing can be done with no duct work, except maybe running- in before shipment. In which case ear protection is the way I'd go (and eye protection for the dirt and dust being flung around). Some designs need ducting to prevent drawing excessive power in "free air" condition. At least it is anchored down when running. Are there only 4 anchor bolts, and none under the motor section? It is hard to see in the video. Are vibration measurements part of the testing? I...
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Re: Test Bed Motor and Blower

Avinash Thawani ·
Hi, I am going to be doing vibration analysis on the following machine which is the motor and the blower. There is bolting properly done. Please find attached spectrum's of the motor and blower. Kindly advise what to do next.
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Re: Test Bed Motor and Blower

Avinash Thawani ·
How to improve alignment
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Re: Test Bed Motor and Blower

Walt Strong ·
Why are you asking about alignment? You have a machine with 4-bearings, so where were the vibrations measured and in what directions; horizontal, vertical and axial? (forget about X,Y, Z unless you specify the correct orientation!) What is the shaft speed? What are the frequency and amplitude values of the dominant frequencies? What instrument and software did you use for these plots? Walt
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Re: Test Bed Motor and Blower

Walt Strong ·
Your first photograph showed the blower sitting on a floor or ground. I would suggest bolting it rigidly to a foundation base or setting the base on rubber pads or mounts. At the very least, this would minimize vibrations caused by loose structural connections, and perhaps it would keep the vibrations repeatable from one run to the next. You have asked for help, but you have provided very little information to work with. A poorly labeled vibration spectrum is difficult to work with; like it...
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Re: Test Bed Motor and Blower

fburgos ·
Add a silencer. do you align before or after bolting, it might need realignment, also your spectrum right now its useless without information, where does the data come from, type and number of bearings, machine speed, line frequency, number of vanes?
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Re: Test Bed Motor and Blower

Avinash Thawani ·
Hello, I have changed the speed of the motor to 960 RPM. This is a 2 HP, 3 Phase Motor. The noise level has gone down so that is not a problem now. I am get a 3X peak in all bearings as shown below. Kindly advise what to do next.
 
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