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Low cost level transmitters

Float operated level devices use simple magnet and reed relay mechanical technology for a widely used and proven low cost approach to liquid level measurement, where accuracy levels of 5mm-10mm in a vessel is sufficient.  For more information on which level transmitter to use for your application contact us or click below for more information.

For more information call +44 (0)1726 839 909 or

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Float Operated Level Measurement

A robust, low cost, float operated level measurement for liquid level where accuracy of 5-10mm in a tank is sufficient. Suitable where there is limited head space, they can be fitted directly to analogue or digital local displays or combined with a transmitter for remote monitoring and control.


As the level rises and falls, a magnet in the float operates switches in the tube, giving an output which corresponds to the level.  Often supplied with Magnetic Level Gauges to give local level indication and retransmission to a control panel or plc for alarm functions and level monitoring.  Typical Industries include:

  • Petrochemical, Oil & Gas
  • Food & Beverage
  • Process & Drinking Water
  • Rail
  • Shipbuilding
  • Power Plants

For more information contact us by email below or call +44(0)1726 839 909.

Understanding Basic Magnetic Reed Switch Operations for Float Switches

Magnetic Reed Switches and Float SwitchesFloat switches are fundamentally a basic level control product often containing a reed switch to perform the required level control action.  The most confusing part in selecting a float switch is determining the magnetic reed...

Types of Float Switches

Different Types of Float Switch and Their PricesThere are a number of different types of float switches, each with their own advantages and disadvantages.  Most designs can be made to different specifications to suit the ruggedness requirements of an application....

Train level measurement, gauges and indicators

To solve a specific problem with access and the lack of height between a fuel tank and the trains body, AMS have modified the head of our approved level sensors to allow fitting in confined spaces. This development also removed the need for the transmitter to be located in a separate box on the side of the tank and allowed the sensor to be wired directly to the indicators, saving significant additional costs in materials and wiring time.

Train level measurement and control

Advances in the way instrumentation can be powered due to processing capabilities at reduced power levels, combined with the ever-continuing miniaturisation of electronics capability, has created the opportunity for rail companies to consider more modern electronic/digital technology as an alternative to the traditional methods for level measurement.

RCV 2 Inspection

Related Documents

Refuelling Control Valve and Dry Break Coupling

The Refuelling Control Valve is a float operated servo valve, designed to limit the amount of liquid fed into a tank to a specific level.The coupling prevents fuel leakage when fuelling a locomotive and automatically closes when the fuelling hose coupling is removed. 

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