Tecfluid CU Series - Manual (Page 5)

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1 INTRODUCTION
The CU100 flowmeter is an electronic device that is based on ultrasonic signal
transmission through a pipe where a liquid is flowing. The working principle is called
transit time. It consists of placing two ultrasound transducers on a pipe and sending an
ultrasonic signal from the first to the second and then in reverse. The difference between
the transmission and the reception time is proportional to the flow velocity in the pipe. An
associated electronic circuit based on digital signal processing is responsible for
converting the time difference in flow.
The device provides the following features:
 Non-invasive installation. The transducers are placed on the outside of the
pipe to measure the flow.
 Current output proportional to the flow rate and user programmable.
 Relay outputs programmable by the user.
 Graphic display with intuitive menus.
 No maintenance required.
2 INSTALLATION OF THE ELECTRONIC CONVERTER
It is recommended to install the electronic converter on a wall near the point where the
flow rate needs to be measured, never on pipes .
To do this, remove the lid and use the 5 mm diameter holes indicated in the figure to fix
the converter to the wall.
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INTRODUCTION
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