Analytical instruments and sensors measure critical process parameters such as pH/ORP, dissolved oxygen and conductivity in a wide variety of industrial applications for reliable process monitoring and control.

7866 Thermal Conductivity Analyzer

Measurement of gases is crucial for various applications in industries like chemical and petroleum.

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Durafet pH Sensor

Honeywell’s Durafet pH electrode is an industrial, non-glass, unbreakable, Ion Sensitive Field Effect Transistor

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DL422 ORP Transmitter

DirectLine® DL422 Oxidation Reduction Potential (ORP) Transmitter modules are next-generation analytical transmitters that combine

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DL421 pH Transmitter

Part of Honeywell’s product range for pH measurement, the DirectLine® DL421 pH Transmitter Sensor

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APT4000PH Analyzer

The Honeywell Analytical Process Analyzer (APT) 4000PH series monitors and controls pH and ORP

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APT2000PH Transmitter Series

​Honeywell’s APT2000PH transmitter series continuously measures pH or Oxidation Reduction Potential (ORP) in a

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DL5000 Equilibrium Probe

Honeywell’s DirectLine DL5000 Equilibrium Probe represents field-proven technology in the measurement of dissolved oxygen

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DirectLine DL425 ppb Transmitter

Honeywell’s DirectLine DL425 ppb Transmitter is used to measure dissolved oxygen. Its compact design

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DirectLine DL424 ppm Transmitter

​Honeywell combines the latest in microelectronics and unique compact design with a differentiated sensing

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APT4000 Toroidal Conductivity Analyzer

Conductivity measurement devices determine conductivity, chemical concentration and salinity in a wide-range of processes.

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APT4000 Contacting Conductivity Analyzers

Conductivity measurement devices determine conductivity, resistivity and salinity in a wide-range of processes. Honeywell’s

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APT2000 Toroidal Conductivity Analyzers

Conductivity measurement devices determine conductivity, chemical concentration and salinity in a wide range of

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APT2000 Contacting Conductivity Transmitter

Conductivity measurement devices determine conductivity, resistivity and salinity in a wide range of processes.

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DL4000 Conductivity Cells

​Honeywell’s DL4000 line of DirectLine Contacting Conductivity Cells is compatible with the DL423 DirectLine

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5000TC Toroidal Conductivity Sensor

Conductivity measurement can pose a challenge for complex processes where coating, fouling, corrosion or

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