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
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
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
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
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
Standard Sensor Lifetime
60⁰ C Maximum Temperature
Durable Polycarbonate Body
Low Maintenance Gel-Filled Design
Moderate & Heavy-Duty
S465C
Extended Sensor Lifetime
80⁰ C Maximum Temperature
Rugged, Chemically Resistant Ryton® PPS Body
Large Volume Electrolyte Reservoir with Proprietary Gel
Agriculture or 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
Standard Sensor Lifetime
Static Design with Integrated Cable Assembly
Standard Maintenance; Spherical Bulb Design
80⁰ C Maximum Temperature
Moderate
S272CD
Extended Sensor Lifetime
Static Design with Integrated Cable Assembly
Minimal Maintenance; Flat Surface Self-Cleaning Design
100⁰ C Maximum Temperature
Heavy-Duty
S8000 Series
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
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
Standard Sensor Lifetime
Static Design with Integrated Cable Assembly
Durable Ultem® Body
Standard Maintenance; Spherical Bulb Design
80⁰ C Maximum Temperature
Moderate
S272CD
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
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
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
Standard Sensor Lifetime
Static Design with Integrated Cable Assembly
Durable Ultem® Body
Standard Spherical Bulb Design
80⁰ C Maximum Temperature
Moderate
S272CD
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
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 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
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
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
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
