ACCELEROMETER MOUNTINGS PDF

An accelerometer is a sensor that senses the dynamic motion of the surface that it is attached to by producing an electrical output which is. The mounting of a vibration sensor (accelerometer) directly impacts on its performance. Incorrect mounting may give readings that relate not only to a change in. Accelerometer Mounting Techniques are described as far as Mounting Surface Preparation, Installation and a variety of methods.

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Guidelines for Mounting Test Accelerometers

The output has three signals, each representing the vibration for one of the three axes. The screw engagement length should always be checked to ensure that the screw does not bottom out into the accelerometer base.

For adhesive mounting, some accelerometers are deigned to acccelerometer mounted directly to the test surface while acceleormeter require mounting adapters or bases for adhesive mounting. If not available, weld or epoxy a steel mounting pad to the test surface.

Accelerometer Mounting

For quick mounting of light sensors at room temperature accelreometer low acceleration. Is there a high level of electrical noise in the area? The supplied removal tool should be used for teardrop accelerometers Figure 5. Accelerometer Introduction to Acceleration Measurement. Misalignment of the sensor axis and the measuring directions should be kept as low as possible, particularly if transverse vibration of high magnitude occurs.

Types of Accelerometer Mounting | TME Systems

Be sure to follow the specified torque settings to mkuntings damaging the sensor or stripping the threads. Flat magnet base Model A27 Figure 8: Noise typically decreases as frequency increases so noise at low frequencies is more of a problem than at high frequencies. Do not use magnets for seismic accelerometers risk of damage. Case Grounded accelerometers have the low side of the signal connected to their case.

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Get updates on exclusive content. A thread-locking compound may be applied to the threads of the mounting stud to safeguard against loosening.

Using separate adhesive mounting bases is recommended to prevent the adhesive from damaging the accelerometer base or clogging the mounting threads. Frequency Response is determined by the mass, the piezoelectric properties of the crystal, and the resonance frequency of the case.

Types of Accelerometer Mounting.

How To Mount Accelerometers Correctly

Adhesives, and threaded studs are acxelerometer permanent mountings. The accelerometer operating frequency range is determined by a back- to-back calibration method where the accelerometer under test is securely mounted to a reference standard accelerometer. Stud mounting is recommended if the accelerometer has an integral stud or if it has a tapped hole and is supplied with a removable stud.

This mounting method provides a very secure attachment for the accelerometer to the test structure and matches the mounting configuration during factory calibration. To remove an adhesive mounted accelerometer, use a wrench on the case’s wrench flats and twist to break the adhesive bond. Response degradation in direct proportion to the weight of the accelerometer may occur and for the best results, avoid magnetic mounting to unclean surfaces, non-flat surfaces and surfaces with thick paint.

To be screwed onto the test object together with the accelerometer. Such as when mounting the accelerometer on a thin sheet of metal where it is not possible to drill for stud mounting. Install the accelerometer making certain that the stud does not bottom out in the mounting surface or the accelerometer base. The following mounting methods are recommended for accelerometers: Figure 2 is an example of a stud mounted accelerometer.

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Other Considerations when choosing an Accelerometer: The frequency of the AC output voltage will match the frequency of the vibrations. Adhesive Mounting When the situation arises that the stud mount method is impractical or impossible, adhesive mounting is the recommended method. UA Large High-temperature Clip, insulated set of 5. UA Set of plastic clips for mounting directly on object surface.

Adhesives such as epoxy or cyanoacrylate have proven to provide satisfactory bonding for most applications. Triaxial mounting cubes M3 M5 M8 M How to mount a vibration sensor Home Blog How to mount a vibration sensor.

Stud Mounting Stud mounting is recommended if the accelerometer has an integral stud or if it has a tapped hole and is supplied with a removable stud. To achieve a higher degree of surface contact, apply a thin layer of silicone grease between the accelerometer base and the mounting surface.

For triaxial measurements with three uniaxial accelerometers. The output does not “cut-off ” but the sensitivity decreases rapidly with lower frequencies.