INDUSTRY COMPONENT

pH Sensor Assembly

Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications

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Component Specifications

Definition
A complete pH sensor assembly designed for integration into automated pH monitoring and dosing systems, consisting of a glass electrode, reference electrode, temperature sensor, and protective housing. This component provides continuous, real-time pH measurement in industrial processes with high accuracy and reliability, enabling automated chemical dosing control.
Working Principle
The pH sensor assembly operates on the potentiometric principle, where the glass electrode develops a potential proportional to hydrogen ion concentration. The reference electrode provides a stable reference potential. The combined electrode potential is measured against the reference, with temperature compensation ensuring accurate pH readings across varying process conditions.
Materials
Glass electrode: pH-sensitive glass membrane (typically lithium silicate glass); Reference electrode: Ag/AgCl or calomel reference system with KCl electrolyte; Body: Chemical-resistant materials (PP, PVDF, or PEEK); Junction: Ceramic, PTFE, or glass frit; Cables: Shielded, chemical-resistant cable with IP67/IP68 rating
Technical Parameters
  • Accuracy ±0.01 pH
  • Cable Length Standard 5m, options up to 20m
  • Output Signal 4-20 mA or digital (Modbus, Profibus)
  • Response Time <30 seconds to 95% of final value
  • Pressure Rating Up to 10 bar
  • Measurement Range 0-14 pH
  • Temperature Range 0-100°C
  • Process Connection 3/4" NPT, G1/2", or flange mount
Standards
ISO 15839, DIN 19261, IEC 60746, ASTM D1293

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for pH Sensor Assembly.

pH sensor industrial pH probe automated pH monitoring process control sensor chemical dosing system pH electrode assembly pH Sensor Assembly pH Sensor Assembly in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Automated pH Monitoring and Dosing System

Automated system for continuous pH monitoring and chemical dosing in process streams.

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Engineering Analysis

Risks & Mitigation
  • Glass membrane breakage
  • Reference electrode contamination
  • Temperature sensor drift
  • Junction clogging
  • Cable damage in harsh environments
FMEA Triads
Trigger: Chemical attack on glass membrane
Failure: Inaccurate pH readings leading to improper dosing
Mitigation: Use chemical-resistant glass formulations, implement regular inspection protocols, install protective sleeves
Trigger: Reference electrolyte depletion
Failure: Unstable reference potential causing measurement drift
Mitigation: Implement automatic electrolyte refill systems, schedule regular maintenance, use gel-filled reference electrodes
Trigger: Temperature sensor calibration drift
Failure: Incorrect temperature compensation affecting pH accuracy
Mitigation: Use dual temperature sensors for redundancy, implement automatic calibration routines, select high-stability RTD sensors

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.01 pH at 25°C, ±0.5°C temperature accuracy
Test Method
Two-point calibration verification, temperature response testing, pressure leak testing, electrical continuity verification

Buyer Feedback

★★★★☆ 4.5 / 5.0 (17 reviews)

"The pH Sensor Assembly we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

"Found 55+ suppliers for pH Sensor Assembly on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this pH Sensor Assembly is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

How often should pH sensor assemblies be calibrated?

Industrial pH sensors should be calibrated at least once per week for critical processes, or according to manufacturer recommendations. Two-point calibration using pH 4.01 and 7.00 or 10.01 buffer solutions is standard practice.

What maintenance is required for pH sensor assemblies?

Regular maintenance includes cleaning the electrode surface, checking and refilling electrolyte solution, replacing junction materials as needed, and verifying temperature sensor accuracy. Protective sleeves should be inspected for cracks or contamination.

Can pH sensor assemblies handle high-temperature processes?

Yes, specialized high-temperature versions are available with reinforced glass membranes and heat-resistant materials that can withstand temperatures up to 130°C, though standard models typically operate up to 100°C.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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