Omega Products FSW300 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. Device description and intended use ............................................................................................................... 2

1.1. Functional principle .......................................................................................................................................... 2

1.2. Component overview........................................................................................................................................2

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

2.1. Qualified personnel .......................................................................................................................................... 3

2.2. Special safety instructions................................................................................................................................ 3

3. Material specifications of wetted components ................................................................................................. 4

4. Flow switch installation..................................................................................................................................... 4

4.1. Mechanical installation ..................................................................................................................................... 4

4.2. Electrical connection ........................................................................................................................................ 6

5. Adjusting the switching unit .............................................................................................................................. 7

5.1. Type of contact................................................................................................................................................. 7

5.2. Flow switch....................................................................................................................................................... 7

6. Maintenance and repairs.................................................................................................................................. 8

7. Shut-down and disposal................................................................................................................................... 8

8. Technical data .................................................................................................................................................. 9

8.1. Technical data flow switch version..................................................................................................................9

8.2. Maximum flow rate of the flow switch............................................................................................................... 9

1

Device description and intended use

1. Device description and intended use

Flow switches are designed for minimum or maximum monitoring of liquid flows. The operational safety of the
supplied equipment is only guaranteed if it is operated according to its intended use (flow monitoring of liquids).
The specified limit values (see the chapter entitled “Technical data“) should never be exceeded.

It is your responsibility to select a technology which is suitable for your specific application, to install it correctly, to
carry out tests and to maintain all the components.

Various device versions are manufactured. The respective type plate displays the version of each device.

1.1. Functional principle

The flow switch consists of a paddle system (1) which has a
permanent magnet (2) located at its upper end. A reed contact (3)
is positioned outside the flow above this magnet. A second,
magnet (4) with opposite polarity is used to create a reset force.

The paddle system is moved once it comes into contact with the
flow which is to be monitored. The magnet (2) changes its position
in relation to the reed contact (3). The contact opens/closes
depending on the contact type (see chapter 5).

As soon as the flow is interrupted, the paddle returns to its original
position and the reed contact opens/closes depending on the
contact type (see chapter 5).

1.2. Component overview

2. Safety instructions

Always read these operating instructions carefully prior to installing the new product. Always adhere to the
instructions contained herein, especially the safety instructions, otherwise there is a potential risk of personal
injury and damage to instruments and plants.

Even though we provides assistance through personal consultation or the respective literature, it is the
responsibility of the customers to determine the suitability of the product for the specific application.

The flow switches are state-of-the-art devices. This concerns switching point accuracy, functioning and safe
operation of the device.

However, professional and safety conscious conduct of the operator is required to ensure safe operation.

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