pHionics Inc.

Submersible Isolated Water Quality Sensors

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pHionics was founded in 1982 and now has over 30 years of experience designing systems for companies such as IBM, Lawrence Livermore Berkeley Labs, Ametek, and Hewlett Packard. During this time, we built our own sensors to withstand the harsh conditions of industrial applications and simplify the operations of our customers.

The design addressed many industry issues such as water ingression, electrode instability/poisoning, complicated installations, and electrical interference. Soon after release, datalogging and water treatment system manufacturers began private labeling our sensors to replace their own. By 1991, pHionics transitioned fully to sensor manufacturing and has been continually improving the sensors since then. Some notable improvements include:

- Early adoption of surface-mount technologies (1987) resulting in industry leading miniaturization
- Extremely reliable double O-ring seals
- Patented pHiConn™ connector system allowing for easy removal of cable or electrode without tools
- Built-in isolated 4-20 mA transmitter in the smallest diameter housing
- Development of the pHiKlip system for implementation of redundant or multiparameter arrays

pHionics’ creative spirit has contributed to the successful completion of several Small Business Innovation Research awards (SBIR Phase l and Phase ll), which—to date—has resulted in the generation of the following U.S. Patents: 6331117, 6612848, 6824394, 6834560, 6993988, and 7293746.

Regardless of what we are researching, our focus remains on providing reliable, low-maintenance, and easy-to-use sensors for pH, ORP, dissolved oxygen, and conductivity measurement—along with excellent customer service to ensure a great experience.

Company Details

Address
6680 Alhambra Ave # 504
Martinez, CA 94553

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Products & Services

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4-20 mA Differential ORP Sensor | The D-phi Series™ | $629 USD

If you want a user-friendly, low-maintenance ORP monitoring system, then this 4-20 mA ORP (redox) sensor is your...

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4-20 mA Differential pH Sensor | D-phi Series™ | Only $549 USD

The new D-phi Series™ offers a reliable, user-friendly, and low-maintenance solution for industrial or environmental...

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STs Series pH Sensor

The pHionics STs Series™ pH sensor (sonde) provides accurate pH and temperature measurements to a variety of systems...

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STs Series Conductivity Sensor

The pHionics STs Series™ Conductivity is a water quality sensor (sonde) designed to pair with a datalogger or RTU for...

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STs Series ORP Sensor

The pHionics STs Series™ ORP sensor (sonde) provides reliable ORP and measurements to monitor bacterial activity,...

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STs Series Dissolved Oxygen Sensor

The pHionics STs Series™ Dissolved Oxygen sensor (or sonde) accurately measures dissolved oxygen (0-20 mg/L or percent...

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Resources & Content

The Guide To pH Drift

Is it the solution, sensor, or electrode that is drifting? Is the electrode too old? Did something happen during...

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The Guide To pH Drift

Is it the solution, sensor, or electrode that is drifting? Is the electrode too old? Did something happen during...

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The Best Storage Solutions for pH Sensors

Put simply, the purpose of storage is to protect the accuracy and stability of a sensor until it gets used. Without...

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