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Installation and commissioning
October 2023
Note
The position of the machine shaft must be known when adjusting the sensor for static
measurement.
Procedure
1. Adjust the distance between the sensor and the measuring target by shifting the
2. Fix the mounting flange in the correct position and secure the screws and the nuts
5.5
Mutual influences of two measuring chains
Two eddy current measuring chains mounted too closely together influence each other
and generate invalid measuring results (cross talking effects). Measurements with the risk
of mutual influences are:
•
Shaft vibration measurement with two sensors in X-Y arrangement (for example: two
EZ108x-xx-xx-xxx sensors, mounted in a 90° angle at a shaft with ≤100 mm diameter).
•
Shaft displacement measurement with Tandem application.
•
Shaft displacement measurement with Cone or Double Cone application.
Figure 5-20: Definition of the distance between two sensors
A. Minimum distance between center sensors heads
In this case, the oscillator frequency of one of the converters must be slightly shifted. See
Measurement
See
Table 5-2
not de-tuned (identical oscillator frequency) measuring chains depending on the sensor
type.
40
bracket until the converter output signal has reached the required point on the
characteristic curve. See
to prevent them from getting loose.
Ensure that the sensor is mounted vertically to the measuring target.
how to change the oscillator frequency.
for the minimum distance at de-tuned (different oscillator frequency) and
Figure 5-19
for details.
Operating Manual
MHM-97884
MHM-97884, Rev. 1.8
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