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    AquaMetrix products have been manufactured for more than five decades. The company has grown into a worldwide maker of water quality instrumentation that is known for working in environments where nothing else works. Aquametrix products have been made in the United States since 2010.                          

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AM-ES1 Wide Range Toroidal Sensor

AM-ES1 Wide Range Toroidal Sensor


The AquaMetrix ES series electrodeless conductivity sensors are used in processes where conventional contacting sensors may become fouled or corroded.
Each sensor comes standard with a PT1000 RTD temperature device, which provides automatic temperature compensation to 25°C (77°F).
The AquaMetrix ES sensors can be mounted in flow through applications or submersion mounted in tanks or open vessels.
The terms electrodeless and toroidal are interchangeable in regards to this type of conductivity sensor.

Operating Principle:
Toroidal conductivity sensors are made up of two-wire wound toroids encapsulated in a potting compound and encased in a plastic body. One toroid acts as a transmitter and the other as a receiver. An electric current is induced between the toroids through the process solution. This current is directly proportional to the conductivity of the process solution.



  • Low Maintenance – reduced cleaning requirements
  • No electrode Corrosion – Toroid is full encapsulated
  • One Wetted Material – Easier chemical compatibility
  • Wide Measuring Range – from 5 uS/cm to 500,000 uS/cm
  • Automatic Temperature Compensation


  • Plating
  • High purity water applications
  • Pharmaceutical applications
  • Reverse Osmosis systems
  • Fume Scrubbers
  • Boilers
  • Cooling Towers
  • Textile Manuafacturing
  • Food and Beverage


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