JUMO flowTRANS US W02, Краткие инструкции

Страница: 9 / 48

9
3 Device Description
3 Device Description
3.1 Design
3.2 Function
The transducers are on opposite sides of the measuring section 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) Measuring tube (4) Display (TFT display)
(2) Transducer (ultrasonic converter) (5) O-ring (seal for the process connection)
(3) Housing for electronic components (6) M12 plug connection (4-pole)
(3)
(5)
(6)
(2)
(1)
(2)
(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
Measuring section (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