Online Process & Industrial pH Probes

One of the most important considerations when selecting a pH probe is the contaminants the probe may be exposed to. Harsh chemicals and suspended solids may cause pH probes to fail. In applications with these contaminants, it is important to select a durable sensor that is easily replaced. Light duty applications involving monitoring of cleaner water may prioritize other considerations, such as ease of use.

Sensorex offers a range of pH probes designed for online monitoring of clean water, dirty water, and everything in between. Some common applications are covered in the tabs below. Swimming pool monitoring is an example of a light duty application, while wastewater monitoring involves more heavy contamination. View and compare product recommendations for these and other similar applications. Every application is different – our experts are available to provide individual recommendations. If you have specific questions, contact us.

Light Duty / Limited Contamination

Heavy Duty / Significant Contamination


Light Duty


Wastewater Monitoring

Industrial operations that discharge effluent into sewer systems, lakes, or streams are required to neutralize effluent prior to discharge. State and Federal requirements vary, but non-compliance may result in fines and other consequences. Sensor requirements will vary based on the type of effluent being treated. pH probess that can either be reconditioned or easily replaced are generally ideal, as wastewater may contain contaminants that quickly wear out pH probes.

Typical pH: Variable (Depends on Source)

Sources of Contamination: Industrial processes, municipal use

Learn More: Wastewater pH Neutralization, Cyanide Wastewater Treatment

Moderate

S272CD

Process pH Sensor

Extended Sensor Lifetime

Static Design with Integrated Cable Assembly

Flat Surface Self-Cleaning Design Resists Breakage

No Solution Ground

Moderate to Heavy-Duty

S8000 Series

S8000 Assembly

Maximum Sensor Lifetime

Quick Replace Cartridges for Easy and Economical Upkeep

Flat Surface Self-Cleaning Design Resists Breakage

Built-In Solution Ground

Heavy-Duty, Coating

SD7000 Series

differential pH probe

Maximum Sensor Lifetime

Refillable Reference Solution and Replaceable Salt Bridges Allow Sensor Reconditioning

Flat Surface Self-Cleaning Design Resists Breakage

Differential Measurement Technique Eliminates Ground Loop Error


Swimming Pools


Swimming Pools

Maintaining proper pool water pH is essential for bather comfort, equipment maintenance, and chlorine functioning. Our pH5000 sensors offer a reliable option for basic pool pH monitoring. For pools with heavier bather loads, consider the more durable S465 pH probe, which features a proprietary gel fill for extended lifetime.

Typical pH: 7-8

Sources of Contamination: Dirt, sweat, oils, sunscreen

Learn More: Swimming Pool Chemistry Application Note

Light-Duty

pH5000

low cost pH Sensor

Standard Sensor Lifetime

60⁰ C Maximum Temperature

Durable Polycarbonate Body

Low Maintenance Gel-Filled Design

Moderate & Heavy-Duty

S465C

Acu-Trol 744000260 pH Sensor

Extended Sensor Lifetime

80⁰ C Maximum Temperature

Rugged, Chemically Resistant Ryton® PPS Body

Large Volume Electrolyte Reservoir with Proprietary Gel

Agriculture or Aquaculture


Agriculture, Hydroponics & Aquaculture

Whether water is used as an aquaculture habitat or to deliver nutrients to crops, pH may be critical to life and growth. Large fish farms, crop beds, or gardens will benefit from selecting a low maintenance pH probe that resists contamination for extended working lifetime.

Typical pH: 6.5-8.5

Sources of Contamination: Agricultural runoff, urban runoff / storm sewers

Learn More: Aquaculture Water Quality, Hydroponics Nutrient Solution

Light-Duty

pH6000

easy to use pH probe

Standard Sensor Lifetime

Static Design with Integrated Cable Assembly

Standard Maintenance; Spherical Bulb Design

80⁰ C Maximum Temperature

Moderate

S272CD

Process pH Sensor

Extended Sensor Lifetime

Static Design with Integrated Cable Assembly

Minimal Maintenance; Flat Surface Self-Cleaning Design

100⁰ C Maximum Temperature

Heavy-Duty

S8000 Series

S8000 Assembly

Maximum Sensor Lifetime

Ideal for Dirty Water with Modular Quick Replace Cartridges

Minimal Maintenance; Flat Surface Self-Cleaning Design

100⁰ C Maximum Temperature

Industrial Source Water


Industrial Source Water

Source water, including surface water and ground water, is susceptible to fluctuations in quality due to weather events, seasonal changes, and upstream discharges. Monitoring the quality of raw water allows you to adjust treatment processes required to meet industrial pre-treatment standards.

Typical pH: 6-8

Sources of Contamination: Algal blooms, heavy rainfall, industrial discharges

Learn More: Source Water Monitoring Application Note

Light-Duty

pH6000

easy to use pH probe

Standard Sensor Lifetime

Static Design with Integrated Cable Assembly

Durable Ultem® Body

Standard Maintenance; Spherical Bulb Design

80⁰ C Maximum Temperature

Moderate

S272CD

Process pH Sensor

Extended Sensor Lifetime

Static Design with Integrated Cable Assembly

Rugged, Chemically-Resistant Ryton® PPS Body

Minimal Maintenance; Flat Surface Self-Cleaning Design

100⁰ C Maximum Temperature

Heavy-Duty

S8000 Series

S8000 Assembly

Maximum Sensor Lifetime

Ideal for Highly Variable Source Water with Quick Replace Cartridges

Rugged, Chemically-Resistant Ryton® PPS Body

Minimal Maintenance; Flat Surface Self-Cleaning Design

100⁰ C Maximum Temperature

Environmental Monitoring


Environmental Monitoring

Industrial and municipal wastewater is often discharged to the environment after treatment. Environmental monitoring helps to ensure compliance with wastewater discharge regulations designed to protect natural water resources from dangerous wastewater contaminants. Chemical compatibility and durable construction are key in environmental monitoring applications, where pH probes may come in contact with unknown contaminants.

Typical pH: 6-8

Sources of Contamination: Heavy rainfall, industrial and municipal point sources

Light-Duty

pH6000

easy to use pH probe

Standard Sensor Lifetime

Static Design with Integrated Cable Assembly

Durable Ultem® Body

Standard Spherical Bulb Design

80⁰ C Maximum Temperature

Moderate

S272CD

Process pH Sensor

Extended Sensor Lifetime

Static Design with Integrated Cable Assembly

Rugged, Chemically-Resistant Ryton® PPS Body

Flat Surface Self-Cleaning Design Resists Breakage

100⁰ C Maximum Temperature

Heavy-Duty

S8000 Series

S8000 Assembly

Maximum Sensor Lifetime

Ideal for Variable Environmental Conditions with Quick Replace Cartridges

Rugged, Chemically-Resistant Ryton® PPS Body

Flat Surface Self-Cleaning Design Resists Breakage

100⁰ C Maximum Temperature

Wastewater


Wastewater Monitoring

Industrial operations that discharge effluent into sewer systems, lakes, or streams are required to neutralize effluent prior to discharge. State and Federal requirements vary, but non-compliance may result in fines and other consequences. Sensor requirements will vary based on the type of effluent being treated. Sensors that can either be reconditioned or easily replaced are generally ideal, as wastewater may contain contaminants that quickly wear out pH probes.

Typical pH: Variable (Depends on Source)

Sources of Contamination: Industrial processes, municipal use

Learn More: Wastewater pH Neutralization, Cyanide Wastewater Treatment

Moderate

S272CD

Process pH Sensor

Extended Sensor Lifetime

Static Design with Integrated Cable Assembly

Flat Surface Self-Cleaning Design Resists Breakage

No Solution Ground

Moderate to Heavy-Duty

S8000 Series

S8000 Assembly

Maximum Sensor Lifetime

Quick Replace Cartridges for Easy and Economical Upkeep

Flat Surface Self-Cleaning Design Resists Breakage

Built-In Solution Ground

Heavy-Duty, Coating

SD7000 Series

differential pH probe

Maximum Sensor Lifetime

Refillable Reference Solution and Replaceable Salt Bridges Allow Sensor Reconditioning

Flat Surface Self-Cleaning Design Resists Breakage

Differential Measurement Technique Eliminates Ground Loop Error


Heavy Duty