Brüel & Kjaer Vibro ds822 Serie Manuel page 65

9.3 Environmental requirements
9.3.1 Reliability of the displacement sensor in different media
C
AUTION
Humidity or moisture inside the plug result in the displacement sensor system
becoming defective. Seal the plug to prevent moisture from entering.
If the displacement sensor system is operated in other media, e.g. water, it can lead to negative
effects on the measuring result. The higher the electrical conductivity, the greater the error in the
measurement result.
N !
OTE
Without additional protective measures, the rear of the displacement sensor is not media
proof. The values in the following table refer to the sensor tip only.
Material
Water
Saline water 7.5%
Hexane
Heptane
Isopropanol
Soap solution
Sulphuric acid 20%
Ammonia 30%
Methylene chloride
Methanol
Nitric acid 15%
Acetone
© Brüel & Kjær Vibro C105070.001 / V04

Technical alterations reserved!
!
X
X
X
X
X
X
X
X
X

resistant
X
X
X
not resistant
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