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FT900003
Rev A1
INTRODUCTION / TABLE OF CONTENTS
Step One
Offered in liquid and gas sensor types, the general purpose flow switch provides reliable low or no‐flow
detection of relatively clean, non‐coating media with one 1A relay output. Liquid examples in clued water and
acetic acid. Available in Polypropylene‐Ryton® or PVDF, the short flow sensor is used in pipe or ducting from
½” to 1‐1/2”, and the long flow sensor is used in 2” and up. The flow switch set point may be adjusted from
0.04 to 3 fps in liquids or 1 to 90 fps in gases as a low‐flow alarm. The flow sensor is best applied in
applications with relatively constant temperatures.
New Features
Rugged Polypropylene‐Ryton® or PVDF sensor for corrosive liquids and gasses.
Adjustable set point with LED for flow or no‐flow status indication.
60VA relay selectable NO or NC via power supply wiring polarity
Solid State sensor is not damaged by over‐ranging flow velocities.
Table of Contents
Specifications: ......................................................................................................................................................... 3
Make a Fail‐Safe system: ............................................................................................................................ 3
Dimensions:............................................................................................................................................................. 4
Configurations: ............................................................................................................................................ 4
Safety Precautions: ................................................................................................................................................ 5
Introductions: .......................................................................................................................................................... 6
Technology: ................................................................................................................................................. 6
Installation: ............................................................................................................................................................. 7
Wiring: ..................................................................................................................................................................... 8
Wiring to a Flowline Controller: .................................................................................................................. 8
Wiring the Relay output: ............................................................................................................................. 9
Wiring as a P‐Channel or N‐Channel Output: ........................................................................................... 10
Calibration: ............................................................................................................................................................ 11
Set Point: ................................................................................................................................................... 11
Maintenance: ....................................................................................................................................................... 12
Cleaning Procedure: .................................................................................................................................. 12
Testing the Sensor (FT10 Series Only): ..................................................................................................... 12
Testing the Sensor (GT10 Series Only): ..................................................................................................... 13
Warranty: .............................................................................................................................................................. 14
