Kobold DOG Series, Руководство по эксплуатации

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DOG
DOG K11/0422 page 9
6. Operating Principle
This device is an oscillating beam device and works without any movable parts. An
orifice plate in the base creates flow resistance, which forces a partial flow to be
directed into the oscillator. The gas in the oscillator begins to oscillate. The frequency
of oscillation is proportional to the flow of volume. As the ratio between the flow
through the oscillator and the flow through the measuring housing is constant, the
frequency of oscillation is directly proportional to the entire flow of volume through
the device. A platinum sensor determines the oscillation in the measuring head. The
transmitter normalises the measured oscillation to 0 Hz (without flow) and to 150 Hz
for the end of the measuring range.
View from underneath
Platinum sensor
View from above