Vibration Sensor Mounting Techniques

Frequency Response / Mounting Techniques
The accuracy of your high-frequency response is directly affected by the mounting technique that you select for the sensor.

In general, the greater the mounted surface area contact between the sensor and the machine surface, the more accurate your high-frequency response will be. High-frequency response is based on the sensor specified as well as the method of attachment (together as a system).

Stud mounted (or epoxy mounted) sensors are often able to utilize the entire high-frequency measurement capability of a sensor because this technique will maximize the surface contact of the sensor on the machine.

Conversely, a probe tip-mounted sensor has very little surface area contact with the machine surface and offers very little high-frequency accuracy above 500 Hz (30,000 CPM).

The low-frequency response may be accurately obtained by all of the below-illustrated techniques because the low frequency is not based on the mounting system resonance of the sensor and attachment method. The ability to measure low-frequency vibrations will be a function of the sensor's specified capability to measure a given low frequency. It is not dependent on the mounting technique chosen.

The following chart offers a general guideline for the range of mounting techniques available, and the corresponding high-frequency response expectations*:

*depending on the specified high-frequency response of individual sensors

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CTC is the world leader in the design and manufacture of industrial accelerometers and piezo velocity transducers, 4-20 mA vibration sensors, and proximity probe sets, as well as all related mounting hardware, cables and connectors, and junction boxes. Our products enable efficient vibration monitoring for predictive maintenance in a wide variety of industries. Industries served include cement, mining, petrochemical, food & beverage, auto, steel, wind, paper & pulp, power generation, water & wastewater treatment, pharmaceutical, hospitals, bottling, and more. Our mission is to offer the widest variety of accelerometers and vibration hardware products, which are compatible with data collectors and online monitoring systems, as well as the tools for installation.

The CTC product line features vibration analysis hardware for heavy industry. All CTC products are backed by our unconditional, lifetime warranty. If any CTC product should ever fail, we will repair or replace it at no charge.

CTC’s PRO Line offers the world’s most durable and reliable Proximity Probe Sets including drivers, probes, extension cables, and driver enclosures for 24/7 protection of critical machinery in the most demanding industrial environments. CTC PRO Line Proximity Probe Sets are compatible with all major data collectors. PRO Line products are covered by our best-in-class lifetime warranty on material and workmanship.


The TMP line features vibration analysis hardware for research and development. All TMP products are backed by a five-year warranty on materials & workmanship for standard sensors and a two-year warranty for all accessories, cables, connectors, and custom & private-labeled products.

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