Using/attaching the sensors provided
20
NOTE
Danger of damage in the event of shocks and impact stress
The acoustic contact probe contains a Piezo element, which can suffer irreparable
damage due to shocks or impact stress and which can cause the sensor to make
inaccurate measurements.
The sensor should therefore be treated carefully, and be placed down on the metal
surface gently.
This external sensor measures solid borne vibrations on the surfaces of substations. To
do this, the magnetic sensor is attached to the measuring point.
This measurement is ideally suited for substations with a single enclosure and on which
airborne acoustic measurements cannot be conducted.
The connection between the sensor and the substation has a decisive significance. The
sensor should be used on smooth surfaces, when possible. Particles of dust and
uneven spots that prevent full surface contact by the sensor should be removed before
using the sensor. Even a higher level of surface roughness can result in increased
attenuation of the measurement signal. Suitable coupling media (e.g. silicon grease) can
be used in this situation to make improved sensor coupling possible.
Acoustic contact probe
(ACP 30)
