Omega Products FTB 371 Installation Manual

User’s Guide

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It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

Table of contents Page

1. Function............................................................................................................................................................ 1

2. Safety instructions ............................................................................................................................................2

3. Important notes and requirements to installation and operation...................................................................... 3

4. Installation in piping.......................................................................................................................................... 3

5. Electrical connection ........................................................................................................................................3

5.1. Turbine flow sensor with pulse output.............................................................................................................. 3

6. Cleaning ........................................................................................................................................................... 4

7. Shut-down and disposal................................................................................................................................... 5

8. Materials table .................................................................................................................................................. 5

9. Technical data .................................................................................................................................................. 5

10. Dimensions....................................................................................................................................................... 6

1. Function

The turbine flow sensor of the series FTB 370 is a
transducer for volume flow recognition or for fluid dosing
use. It has an almost unlimited application through its
exceptionally compact design, its very wide measurement
range and its convincing measurement accuracy.

The liquid flowing into the meter is divided by the guiding
blades in four split beams. These hit the rotor from four
directions and put it in motion. The uniform loading of
bearing from four sides causes the forces to cancel
themselves out for the most part and wear is reduced to a
minimum.
The extremely hard bearing materials, sapphire and hard
metal, ensure in addition an extraordinary life expectancy.
The rotor speed is transmitted to an electrical pulse signal
(frequency):

- The FTB 371 is equipped with rotors which are fitted

with magnets. A Hall effect sensor recognizes the
rotation of the rotor.

In this case, a frequency signal proportional to flow (square
wave) is available.