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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Wedged, dual rail magnetic bases are typically used for installations on curved surfaces such as motor and compressor housings and pipes. They have three crystals positioned so that each one reacts to vibration in a different axis.

What is the size and shape of the sample to be monitored?

Figures 6 through 8 illustrate magnetic bases and a magnetic mounted accelerometer. Low Frequency Cut-off is the frequency where the output starts to fall off below the stated accuracy. Adhesive bases provide an alternative mounting method and may be used when mounting by stud or screw is not practical.

The sensor under test should be stud mounted whenever possible for highest accuracy. Use a low sensitivity accelerometer to measure high amplitude vibrations and conversely use a high sensitivity accelerometer to measure low amplitude vibrations.

Since the charge is proportional to the force, and the mass is a constant, then the charge is also proportional to the acceleration.

How to mount a vibration sensor

The ACC weighs 15 gms and can monitor vibration levels up to g’s. Each base incorporates a counterbore so that the accelerometer does not rest on the shoulder. ACC shown is a high quality low cost accelerometer for general purpose applications. Large Monutings Clip for mounting accelerometers under calibration. For horizontal measurement, vibration sensors should be mounted on the motor bearings and pump bearings. UA Large High-temperature Clip, insulated set of 5.

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Types of Accelerometer Mounting

Make sure that the mounting stud is not too long resulting in a gap between sensor and test object. The supplied removal tool should be used for teardrop accelerometers Figure 5. Attach the accelerometer via the M5 thread.

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To avoid damaging a mountimgs during the removal process, a debonding agent must be applied to the adhesive. With this, it is important to mount the accelerometer properly and ensure it is tightly coupled to the test surface to duplicate the motion from the test object to the accelerometer without discrepancies. The following table shows the available mounting accessories from Metra: 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 analogous to that motion.

Two-part epoxies offer stiffness, which maintains high-frequency response and a permanent mount. Does the area require Intrinsically safe or explosion proof instruments?

The mounting acelerometer a vibration sensor accelerometer directly impacts on its performance. Ground Isolated accelerometers have the electrical components isolated from the case and are much less susceptible to mountinhs induced noise.

This stiffness and strength allows these sensors to be directly inserted into machines as part of their structure. Make sure that the hole is perpendicular to the acce,erometer surface. Install the accelerometer making certain that the stud does not bottom out in the mounting surface or the accelerometer base. The output does not “cut-off ” but the sensitivity decreases rapidly with lower frequencies.

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Types of Accelerometer Mounting | TME Systems

Prepare the surface by grinding or machining a smooth, flat area on the test object at least the size of the sensor base, or the size according to the manufacturer’s specifications. The stud mount method is the preferred method of mounting an accelerometer to the test object. A thin layer of silicon avcelerometer between mating surfaces aids in the fidelity of vibration transmission. Flat magnet base Model A27 Figure 8: Stud mounting with stud boltinsulating flange or adhesive pad Magnetic base Adhesive by bee waxcyanoacrylate e.

The type of adhesive recommended depends on the application. Cable clamps M5 M3 Avoid introduction of force via the cable into the transducer. Set of plastic clips with thick base that can be filed muntings to suit your mounting surface. Apply acceldrometer onto the test surface.

Be sure to follow the specified torque settings to avoid damaging the sensor or stripping the threads.

Accelerometers: Types, What It Is & How It Works | Omega

Accelerometr Mounting Choosing the optimum mounting arrangement will significantly improve the accuracy. Do not use magnets for seismic accelerometers risk of damage. To achieve a higher degree of surface contact, apply a thin layer of silicone grease between the accelerometer base and the mounting surface.

Gently rock or slide the assembly in place. Figure 4 shows an example of an accelerometer mounted to a test structure with an adhesive mounting base.