Page 88 - Lehrbuch Neigungsmessung deutsch 2018.indd

COMPENDIUM INCLINATION MEASUREMENT
WYLER AG, WINTERTHUR / SWITZERLAND

7.1 DIGITAL INCLINATION MEASURING SENSORS

7.1.1 ZEROTRONIC SENSOR

ZEROTRONIC sensors have established themselves in the market
as the benchmark when it comes to high-precision inclination
measurement in demanding applications.

The ZERTRONIC family of sensors features the following
characteristics:
• High resolution and high precision
• Excellent temperature stability
• Measuring ranges of ±0.5 to ±60 degrees
• Synchronized registration of measuring values for several sensors
• High immunity to shock
• High immunity to electromagnetic fields

Choice of two sensor types depending on the application:
Within the ZEROTRONIC family there are two sensor types available which have slightly different physical
characteristics:

• ZEROTRONIC Type 3
• ZEROTRONIC Type C
COMMON CHARACTERISTICS OF THE TWO SENSORS:
• The outer dimensions and the electrical characteristics of the two sensors are identical
• The measuring element in both sensors is based on a pendulum swinging between two electrodes.
Depending on the inclined position of the system, the pendulum will change its position in relation
to the electrodes and in so doing, the capacitance between the pendulum and the electrodes will
change. The change of these capacitances is measured digitally
• The sensor cell is completely encapsulated and thus protected against changes in humidity
• Both sensors are calibrated over the complete measuring range
with reference points stored in the EEPROM of the sensor
• Both sensors are equipped with a temperature sensor and are
temperature calibrated allowing an excellent compensation for
temperature changes
DIFFERENCE IN CHARACTERISTICS OF THE TWO SENSORS:
• The pendulum of the ZEROTRONIC Type 3 is larger, which
provides a significantly better signal-to-noise ratio for smaller
inclinations. The ZEROTRONIC Type 3 is therefore better suited
for high precision applications where only small inclinations are measured
• The mass of the pendulum of the ZEROTRONIC Type C is smaller than the one of sensor Type 3. This
provides a higher stability if the sensor is permanently inclined
• Only ZEROTRONIC Type 3 provides the option of analog output
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