JUMO 406050, Руководство по эксплуатации

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3 Device Description
3 Device Description
3.1 Design
3.2 Function
The transducers are on opposite sides of the meter run and act as transmitters and receivers, i.e. they
convert the electrical energy into sound waves and the sound waves into electrical energy.
The electronic components supply power to the device, convert the raw signals into standard signals for
communicating with other systems (PLC, recorder, indicating device, etc.), and provide interfaces for dis-
playing measured values.
Function principle
Front view Rear view
(1) Meter run (4) Device status LED
(2) Transducer (ultrasonic converter) (5) O-ring (seal for the process connection)
(3) Housing for electronic components (6) M12 plug connection (4-pole)
(1)
(2)
(3)
(5)
(6)
(4)
The ultrasonic flowmeter works
according to the runtime method.
This method measures the run-
times t
1
and t
2
required by the
sound to travel from transducer A
to transducer B and vice versa.
= Flow direction
meter run (sectional view)
The runtime differential Δt is di-
rectly proportional to the flow ve-
locity of the medium.
A
B
t
0
t
1
t
2
Δt
Δt = t - t
2 1
B A
A B