mechanical triaxial vibration sensors for fans

Exit Type
CTC offers most sensors in both top and side exit configurations. Side exit sensors are designed for applications where height clearance is a problem, and a lower profile is needed. Top exit sensors are typically lighter weight than side exit sensors and therefore have a better high-end frequency response.


Sensor Case Size
CTC standard size accelerometers come in the largest variety of sensitivity options, ranging from 10 mV/g to 1,000 mV/g. The larger mass allows for detection at lower speeds. As a result, 500 mV/g and 1,000 mV/g sensors are only available in this case size. CTC compact size accelerometers are only available in 100 mV/g options. Mini accelerometers are our smallest case size and are great for high-speed applications. The smaller mass and smaller overall weight allow for accurate information on higher speeds.


Single Axis vs. Triaxial Sensors
For the most effective predictive monitoring, all 3 axis of vibration must be measured to ensure the best understanding of machine health. This requires either 3 single-axis sensors per bearing or 1 triaxial sensor. There are many benefits and trade-offs to both.

For permanent monitoring installation, single-axis sensors will provide the highest quality data. However, this requires 3 single-axis sensors, 3 mounting spaces, and 3 cordsets. For triaxial installations, only 1 sensor, 1 mounting surface, and 1 cordset are required. For permanent cable installations where long cable runs are necessary, the cost savings of only running one cable to a Junction Box can be great.

For portable measurements, the largest consideration is time efficiency and human safety. If 3 axis of measurement cannot be safely reached by the vibration analyst, a triaxial sensor will allow for all measurements to be taken from one location. Additionally, all sensors have settling time before data can be taken accurately. Since single-axis sensors need to settle on each axis, this increases the time per bearing.