How do you know the location where you want to place your sensitive machine is suitable? Well, you check the floor vibration, of course.
However, did you know that the use of different vibration sensors will give you different conclusions?
We have come across different service vendors using various type of vibration sensors to do the measurement. Vendors who offer floor vibration measurement service can use different sensors such as a geophone, a low frequency accelerometer or a seismic, ultra low frequency accelerometer.
Knowledgeable customers who require accurate data will request that a seismic, ultra low frequency accelerometer such as the Wilcoxon 731A be used. The 731A or the 731A/P31 package is the preferred choice of vendors who are in the business of selling anti-vibration isolators.
This is because these vendors require accurate data in order to work out which is the proper anti-vibration isolator they should be proposing to an end-user. If the wrong isolator is installed the solution would not pass the commissioning stage resulting in losses to the vendor when they are required to replace the isolators.
If the unsuitable isolator is not caught at the commissioning stage, then the next time the problem of high vibration comes up would be some time down the line when production is running. An incidence of high vibration then would result in disruption to the production schedule and other costly delays.
The Wilcoxon 731A/P31 combines a supersensitive piezoelectric accelerometer, an ultra-low-noise amplifier, and excellent electrical/mechanical isolation, resulting in unmatched performance in measuring low-level vibration. Wilcoxon's 731A and 731A/P31 seismic sensors are characterized by excellent low-frequency response, high output sensitivity, and a low noise floor.
The ultra-quiet 731A seismic accelerometer can measure vibration levels down to the sub-micro-g range using an ultra-low noise internal amplifier and a high-sensitivity inertial sensing element. The noise floor of the 731A is very near the New High Noise Model (NHNM) developed by the U.S. Department of Interior. Accelerometers for earth seismic monitoring should have a very low noise floor.
The applications for seismic sensors are many, such as :-
Seismic monitoring
Earthquakes
Tremors
Geophysics, geothermal development
Structural monitoring
Buildings
Bridges
Towers
Railways
Dams
Historic property
Mine safety
Structural analysis
Construction monitoring
Urban sites
Demolition blasts
Piling operations
Machine tool monitoring
Chip manufacturing
Ground measurements
Surveillance
Building security
Footstep detection
Perimeter and road surveillance
Border intruder detection
Underground intruder detection
Other
Tunnel monitoring
Mine safety
Neutral wind detection
Blast detection
Isolation tables
Wave motion
Contact us at sales@vibration.company for more information or a quotation.
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