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Recent Topics

High vibration caused by Wind Force?

Hi All, Please explain or share if you have any articles regarding the wind force affect the Fin fan coolers. We have huge number of Fin fan coolers in our LNG plant. Some of the Fans particularly making lot of troubles and We suspect the wind force is the cause for this high vibration. Data: The Maximum Wind velocity is 40 m/s. We have both Induced and forced draught Air coolers (Fin fans). But Forced draught fan has the history of more high vibration and broken blade history. It is onshore...Read More...
Last Reply By Walt Strong · First Unread Post

Spectrum of Doubtful Acceleration

Messrs. Forum: Good evening, I would appreciate absolving the following query: The company that performs vibration monitoring has monitored the vibration of a speed reducer in the output shaft bearing, the output speed is 5.29 RPM; for this they have used the accelerometer SKF CMSS 2200 and they have reported the acceleration spectrum that is attached, my question is: is it correct the spectrum they have reported, because according to the Typical Frequency Response Curve of the...Read More...
Last Reply By Akhil rathore · First Unread Post

Accelerometers sensors

Ronald Turken
Hello everybody, Within our company there is a discussion about which brand of accelerometer sensor gives the best results taking the vibration measurements I am talking about a 100mV/g sensor. is it Wilcoxon? is it IMI? is it Hansford? is it CTC? or any other brand I know about the frequentie range and sensitivity. Witch brand are you using and why are you using that brand. Please tell me why you think your sensor brand you using is the best for the job. for myself, i am using a IMI sensor...Read More...
Last Reply By Shurafa · First Unread Post

vibration in high speed compressor

Hi, we have a kind of a Nouvo Pignone compressor. That it has two shafts (low and high speed). By a gearbox the speed of high speed shaft reach to 12635RPM. It has journal bearings at both sides and proximity vibration probes measure the vibrations. Also I should say that the first resonance speed of that is about 9000RPM. Recently, we've had high vibration at the high speed shaft, particularly at the opposite side of impeller. Vibrations are at 1X frequency (pictures are attached),...Read More...
Last Reply By hkilic · First Unread Post