Stationary screw-in sensor for continuous determination of the
oil condition, humidity and temperature in hydraulic and
lubricating oils.
Performance features
Measurement of changes in hydraulic fluids and lubricants. Data
is continuously documented evaluated and stored. In that way
deterioration and changes in the oil (e.g. water inleakage, oil
change, ...) can be indicated. Through this, damage can be
recognized or completely avoided at an early stage. This offers
the opportunity to prevent machine failures as well as to prolong
maintenance and oil change intervals by means of appropriate
measures. Furthermore, by monitoring the lubricant, correctly
performed maintenance work and the use of the required
lubricant quality may be documented.
Measuring principle
The sensor records the following physical oil characteristics as
well as its periodic change: Temperature, relative oil humidity
and water activity resp., relative dielectric number
(relative permittivity) and conductivity of the fluid.
As especially the conductivity and the relative dielectric number
show a strong connection to the temperature, next to the
characteristic values at current temperature the sensor also sends
the data at reference temperature (40 °C / 104 °F). The sensor is
able to evaluate condition changes automatically.