© Brüel & Kjær Vibro
● C104958.002 / V04 ●
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Brüel & Kjær Vibro
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Instructions Sensor ds821 4 mm
Technical data
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UNRESTRICTED DOCUMENT
8
Technical data
Observe the safety information in chapter "Safety"! For further technical specification we refer to our
4 mm series ds82x product specification BPS0135.
The following typical characteristics are valid under the following conditions unless otherwise
specified:
+18 °C to +27 °C ambient temperature, -24 V DC supply voltage, 100 k
Ω load at signal output,
42CrMo4 B&K Vibro reference material, -10 V Gap Voltage (approx. 2.5 mm measuring distance
between sensor and measuring surface), all components are at their operating temperature.
8.1
Non-contacting displacement sensor system Series ds821
Measuring dimension
Displacement
Measuring principle
Eddy-current process
Nominal system lengths
5 m, 10 m and 25 m
Linear measuring range
4 mm (approx. 0.5...4.5 mm separation from the object
to be measured, corresponding to an output signal
from ca. -2 VDC ... -18 VDC)
Colour code
red
Electrical characteristics:
Operating voltage (UB)
The sensor must be connected to a SELV
power supply with limited power that is secured
with a current supply of < 2.5 A.
-24 VDC (-18 VDC ... -28 VDC)
Operating range
0 V … (U
B
+ 2 V)
Current consumption
max. 12 mA
Output impedance
50 Ω
Power Supply
max. 1A and short-circuit proof
Connector type
Coaxial Connector (SAA), push-pull self-latching
Sensor tip:
Material
Ceramic
Diameter of the tip
Ø 11 mm (± 0,2 mm)
Cable:
Cable type
coaxial
Cable jacket and colour
FEP, blue
Impedance
95 Ω
Diameter
Ø 3,5 mm (± 0,15 mm)
Minimum bending radius
35 mm without cable protection
35 mm with steel protective conduit
75 mm with PTFE protective conduit
100 mm with corrugated tube protection
