© Brüel & Kjaer Vibro GmbH/4 mm ds821 / 21.7.15 /technical specifications subject to change C104958.001/V02
l
40
EN
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.
i
N
OTE
!
If these clearances and minimum distances must be lowered for design purposes, please
contact Brüel & Kjær Vibro.
Sensor tip extending
Distance to the shaft shoulder
sensor, parallel to electrically
conductive material
Sensor tip flush
Required minimum diameter of
the shaft for one sensor
Distance to a shaft end > 100 %
cover
Required minimum diameter of
the shaft for two sensors
Distance to the shaft shoulder
sensor, parallel to electrically
conductive material
Parallel arranged sensors
14
10
10
14
(max) 3,5
r
ø35
14
(max) 3,5
r
ø35
ø
45
ø
70
10
65
