Required Clearances And Minimum Distances For Displacement Sensors - Brüel & Kjaer Vibro ds822 Serie Mode D'emploi

9.3.3

Required clearances and minimum distances for displacement sensors

Non-contacting eddy-current displacement sensors produce a high frequency electromagnetic
field. If electrically conductive material other than the object to be measured is located inside
this field, the measurement result will be distorted.
When assembling your non-contacting displacement sensors, strictly observe the clearances
and minimum distances illustrated in the following drawing.
N !
OTE
If these clearances and minimum distances must be lowered for design purposes, please
contact Brüel & Kjær Vibro.
14
r
r
(max) 3,5
(max) 3,5
14
14
10
© Brüel & Kjaer Vibro GmbH / 4 mm ds822 ATEX / 9.11.16 / technical specifications subject to change / C105070.001 / V03
Sensor tip extending
Sensor tip flush
Distance to a shaft end > 100 %
cover
Distance to the shaft shoulder
sensor, parallel to electrically
conductive material
Distance to the shaft shoulder
sensor, parallel to electrically
conductive material
Required minimum diameter of
the shaft for one sensor
Required minimum diameter of
the shaft for two sensors
Parallel arranged sensors
65
EN
l
34