© Brüel & Kjær Vibro
● C104958.002 / V04 ●
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Brüel & Kjær Vibro
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Instructions Sensor ds821 4 mm
Technical data
EN
UNRESTRICTED DOCUMENT
8.4
Transfer characteristics
The characteristic curves shown in the measurement report are created under the stated
environmental conditions and with the stated target material. When you order a complete
displacement sensor system, you will receive an individual measurement report which may deviate
from the illustrated typical transfer function.
8.4.1
Characteristic curve for distance measurement [GAP / V]
The transfer characteristic describes the interdependence of signal voltage and the distance
between sensor tip and the object to be measured.
•
Y-axis: ...................... GAP [V] ..... .................... X-axis : ...... Displacement [mm]
8.4.2
Characteristic curve for vibration measurement [ISF / mV/
μm]
The displacement sensor system has a sensitivity of -4 mV/
μm (-101,5 mV/mil) with reference to
B&K Vibro reference material 42CrMo4 (Material-No. 1.7225) according to DIN 17 200, corresponding
to AISI/SAE 4140.
The ISF (Incremental Scale Factor) describes the accuracy of the
sensitivity (ISF error / %) in dependence on the separation.
•
Y-axis: ...................... ISF [mV /
μm] ................. X-axis : ...... Displacement [mm]
8.4.3
Deviation from best fit straight line [DSL /
μm]
DSL (DSL/
μm = Deviation from best fit Straight Line) describes the deviation from an ideal
characteristic curve of the distance measurement.
•
Y-axis: ..................... DSL-error [
μm] ............... Y-axis: : Displacement [mm]
