Figure 10. Capacitive level gauge.
Main advantages:
High-precision instrument (1-2% error), which gives the most accurate
readings
ease of installation and operation;
multifunctionality of application;
the ability to use with sticky substances;
Active compensation for the influence of the swaying of the probe.
Ultrasonic Level Meter
The ultrasonic fuel level meter in the tank is an emitter to which a cable is
connected to connect to the GPS tracker. It is installed on the outside of the fuel
tank. The device operates as follows. The generated ultrasonic wave passes
through the wall of the tank and the thickness of the fuel. At the boundary of the
air and liquid medium it is reflected, the signal is captured by the emitter. The
time interval between the sending of the wave and its return after reflection is
taken as the basis for calculating the amount of fuel.
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