IMI Industrial Monitoring Instrumentation

Mounting Techniques

Click for more information on: Standard Stud Mount | Adhesive Mount | Magnetic Mount | Handheld or Probe Tip Mount

Magnetic Mount Magnetic mounting provides a convenient method for portable measurements and is commonly used for machinery monitoring and other portable or trending applications. Note: The correct choice of magnet and an adequately prepared mounting surface is critical for obtaining reliable measurements, especially at high frequencies. Poor installations can cause as much as a 50% drop in the sensor frequency range. Not every magnet is suitable for all applications. For example, rare earth magnets are commonly used because of their high strength. Flat magnets work well on smooth, flat surfaces, while dual-rail magnets are required for curved surfaces. In the case of nonmagnetic or rough surfaces, it is recommended to first weld, epoxy or otherwise adhere a steel mounting pad to the test surface. This will provide a smooth and repeatable location for mounting. STEP 1: After choosing the correct magnet type, inspect the unit checking that the mounting surfaces are flat and smooth. STEP 2: Stud mount the accelerometer to the appropriate magnet according to the guidelines set forth in 'STEP 2' and 'STEP 3' of the Standard Stud Mount Procedure. STEP 3: Prepare a smooth, flat mounting surface. A minimum surface finish of 63 ΅in (0,00016 mm) generally works best. Then, after cleaning the surface and checking for burrs, wipe on a light film of silicone grease, machine oil or similar type coupling fluid. STEP 4: Mount the magnet/sensor assembly to the prepared test surface by "rocking" or "sliding" it into place. Note: Carelessly magnetically mounting accelerometers has the potential to generate very high and potentially damaging 'g' levels. To withstand this abuse, be certain the sensor has built-in shock protection. If unsure, contact IMI or Davidson Measurement.