X90 mobile modules
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X90 mobile system User's manual V 1.20 - Translation of the original manual
Installing sensors
Sensors can be connected to object to be measured using various methods. How the sensors are installed on the
measurement object is crucial for the quality of the overall measurement.
In order to transfer all frequency portions to be measured to the sensor accordingly, very good coupling of the
sensor to the mechanical component is necessary.
Machine parts may be subject to temperature-related expansion and deformation, with the result that the sensor
no longer has its whole measurement surface available. This affects the quality of the measurement.
Figure 64: Temperature deformation of a machine part (excessive deformation shown)
Information:
For optimal measurement, the mounting surface of the sensor must be flat and the sensor must be
fully supported.
In order to increase the quality of the measurement accordingly, a fixed connection to the measurement
object is necessary. Cover plates and plastic parts are therefore not suitable for securing sensors.
The following methods are available for installing sensors:
Stud
Isolation flange
Magnetic clamp
Adhesive pad
Direct adhesion
Figure 65: Overview of installation methods
Of all of the mounting methods, fastening by means of a screw is preferable due to the low attenuation between
the sensor and the measurement surface.
Typical sensor installation is performed by screwing the sensor to the measurement object with what is called a
stud (supplied with the sensor). Studs are specially-made setscrews made from special materials that facilitate the
optimal transfer of vibrations.
If the mounting location is well prepared and the sensor is screwed on correctly, frequencies of up to approximately
10 kHz can be transferred without significant loss.
Information:
To ensure measurements of sufficient quality, B&R recommends mounting the sensor with a screw.
