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Allison Engineering

Innovative Solutions for
Process Control

Flow Switches / Monitors



The FLT93B is a low cost, general purpose flow switch available ex-stock for liquid or gas applications.

It widely used for applications from pump protection to fan failure and is Exd certified and SIL2 rated.

Key Features

  • ATEX certified / SIL2 rated
  • 316 st/st wetted parts
  • Process temperatures up to +175°C
  • 1.2″ / 2″ and 4″ sensor lengths
  • Fixed 3/4″ NPT (m) process connection
  • Fully adjustable alarm set points