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COMPENDIUM INCLINATION MEASUREMENT
WYLER AG, WINTERTHUR / SWITZERLAND
6 ELECTRONIC HANDHELD INCLINATION MEASURING INSTRUMENTS
We distinguish between the following measuring systems:
• INDUCTIVE MEASURING SYSTEMS
(e.g. for the measuring instrument nivelSWISS)
• CAPACTIVE MEASURING SYSTEMS
(e.g. for the measuring systems BlueSYSTEM familiy and for ZEROTRONIC sensors
6.1 MEASURING INSTRUMENT WITH INDUCTIVE MEASURING SYSTEM
NIVELSWISS AND NIVELSWISS-D
6.1.1 INDUCTIVE MEASURING SYSTEMS 1: PENDELUM
MEASURING PRINCIPLE: 2: INDUCTIVE PROBE
Inductive probes generally work according to the prin-
ciple shown in the diagram on the left. Different coil sys-
tems are widely used. Depending on the inclination of the
instrument, or more specifically the position of the ferrite
core in relation to the induction coil the inductance on one
side of the coil, increases whereas on the other side the in-
ductance decreases. The subsequent electronic treatment
assures that the signal output U out is exactly proportional
to the inclination of the instrument.
Positive: Excellent zero point stability
Negative: Impact sensitivity
6.1.2 NIVELSWISS CLASSIC
The first electronic handheld inclination measuring instrument,
which came to market in 1970, was the nivelSWISS (formerly Ni-
veltronic) with built-in analog display. The instrument is still very
popular among users and has been constantly improved and ad-
apted to the latest technologies.
The instrument consists of three main elements, namely the high-
sensitivity precision mechanical pendulum, the analog processing
electronics and the robust cast iron housing. The measured value
is generated inductively by a pendulum. The device is not suitable
for use in close proximity to electromagnetic fields and is very
sensitive to impact due to its construction.
The device is very popular for the alignment of large machine
beds as well as machine components. The display means of a gal-
vanometer is particularly suitable for this application because the
detection of trends is in the foreground. The excellent stability of the zero point is very much appreciated.
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