Industry-Verified Manufacturing Data (2026)

pH/Conductivity Sensor

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard pH/Conductivity Sensor used in the Chemical Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical pH/Conductivity Sensor is characterized by the integration of pH Electrode and Conductivity Cell. In industrial production environments, manufacturers listed on CNFX commonly emphasize Glass membrane construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A dual-function sensor that measures both pH (acidity/alkalinity) and conductivity (ionic concentration) in liquid solutions for process monitoring and control.

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Product Specifications

Technical details and manufacturing context for pH/Conductivity Sensor

Definition
A critical component within Process Analytics systems that simultaneously monitors two key chemical parameters: pH level (hydrogen ion concentration indicating acidity/alkalinity) and electrical conductivity (measure of ionic content in solution). This sensor provides real-time data for quality control, process optimization, and regulatory compliance in various industrial applications where both chemical balance and ionic concentration are important.
Working Principle
Combines pH measurement via a glass electrode that generates voltage proportional to hydrogen ion concentration, and conductivity measurement via electrodes that apply alternating current to measure solution resistance. The pH electrode uses a reference electrode and measuring electrode separated by a special glass membrane, while conductivity measurement uses either contacting electrodes or inductive (toroidal) methods to determine solution conductivity based on ionic mobility.
Common Materials
Glass membrane, Platinum electrodes, Epoxy housing, Reference electrolyte
Technical Parameters
  • Sensor dimensions including probe diameter and length for installation compatibility (mm) Per Request
Components / BOM
  • pH Electrode
    Measures hydrogen ion concentration using glass membrane potential
    Material: Special glass membrane with internal reference solution
  • Conductivity Cell
    Measures solution conductivity via electrode resistance
    Material: Platinum or graphite electrodes
  • Temperature Sensor
    Compensates measurements for temperature variations
    Material: Platinum RTD or thermistor
  • Sensor Housing
    Protects internal components from process media and environment
    Material: Chemical-resistant epoxy or PEEK
  • Cable Connection
    Transmits signals to analyzer/transmitter
    Material: Shielded cable with waterproof connector
Engineering Reasoning
pH: 0-14, Conductivity: 0-200 mS/cm, Temperature: 0-100°C, Pressure: 0-10 bar
pH glass membrane fracture at 15 bar differential pressure, reference electrode KCl depletion at 5000 hours continuous operation, conductivity cell polarization at 250 mS/cm
Design Rationale: Glass membrane mechanical failure due to pressure differential exceeding Young's modulus limit (70 GPa for pH glass), reference electrode potential drift from KCl diffusion depletion (Nernst equation deviation >59.16 mV/pH), conductivity cell electrode polarization at high ionic concentrations causing measurement nonlinearity
Risk Mitigation (FMEA)
Trigger Process fluid crystallization on pH glass membrane
Mode: pH measurement drift exceeding ±0.1 pH units/hour
Strategy: Integrated ultrasonic cleaning system operating at 40 kHz with 15-minute intervals
Trigger Galvanic corrosion between 316L stainless steel body and Hastelloy C-276 electrodes
Mode: Conductivity measurement error >2% FS due to electrode surface degradation
Strategy: Cathodic protection system with -0.85 V potential relative to Ag/AgCl reference electrode

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for pH/Conductivity Sensor.

industrial pH conductivity sensor chemical manufacturing dual function pH conductivity sensor process control glass membrane platinum electrode pH sensor chemical process monitoring conductivity sensor pH electrode conductivity cell temperature s

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Process Analytics
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0-6 bar (0-87 psi)
flow rate: 0.1-3 m/s (0.3-10 ft/s)
temperature: 0-80°C (32-176°F)
slurry concentration: Max 5% solids by weight
Media Compatibility
✓ Potable water treatment ✓ Chemical process streams (acids/bases) ✓ Food/beverage production liquids
Unsuitable: Hydrofluoric acid solutions
Sizing Data Required
  • Process pipe/tank diameter
  • Required measurement accuracy (±pH, ±μS/cm)
  • Installation orientation (in-line, submersion, flow-through)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Electrode fouling/coating
Cause: Accumulation of scale, biological growth, or chemical deposits on sensor electrodes, leading to inaccurate pH/conductivity readings due to impaired ion exchange or signal interference.
Reference junction clogging
Cause: Blockage of the porous reference junction in pH sensors by particulates, precipitates, or viscous fluids, disrupting the electrolyte flow and causing drift or unstable measurements.
Maintenance Indicators
  • Drifting or erratic readings despite calibration
  • Visible coating, discoloration, or buildup on sensor electrodes
Engineering Tips
  • Implement regular automated cleaning cycles (e.g., ultrasonic, chemical, or mechanical brushing) tailored to the process fluid to prevent fouling.
  • Use protective housings or flow cells with appropriate flow rates (typically 0.3-1 m/s) to minimize particulate deposition and ensure representative sampling without abrasion.

Compliance & Manufacturing Standards

Reference Standards
ISO 15839:2006 (Water quality - On-line sensors/analysing equipment for water) ASTM D1293-18 (Standard Test Methods for pH of Water) CE Marking (EU Directive 2014/35/EU for electrical equipment safety)
Manufacturing Precision
  • pH accuracy: +/-0.02 pH units
  • Conductivity accuracy: +/-0.5% of reading
Quality Inspection
  • Calibration verification against NIST-traceable standards
  • Temperature compensation accuracy test

Factories Producing pH/Conductivity Sensor

Verified manufacturers with capability to produce this product in China

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✓ 95% Supplier Capability Match Found

T Technical Director from Brazil Jan 22, 2026
★★★★★
"Found 28+ suppliers for pH/Conductivity Sensor on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
P Project Engineer from Canada Jan 19, 2026
★★★★☆
"The technical documentation for this pH/Conductivity Sensor is very thorough, especially regarding technical reliability. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from United States Jan 16, 2026
★★★★★
"Reliable performance in harsh Chemical Manufacturing environments. No issues with the pH/Conductivity Sensor so far."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

6 sourcing managers are analyzing this specification now. Last inquiry for pH/Conductivity Sensor from Mexico (1h ago).

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Frequently Asked Questions

How does this dual-function sensor improve chemical manufacturing processes?

This sensor simultaneously measures pH and conductivity, providing comprehensive solution analysis for real-time process control, reducing manual sampling and improving reaction consistency in chemical manufacturing.

What maintenance is required for the glass membrane and platinum electrodes?

Regular calibration with standard solutions, gentle cleaning to prevent membrane fouling, and proper storage in electrode storage solution are recommended to maintain accuracy and extend sensor lifespan.

Can this sensor handle corrosive chemicals in manufacturing environments?

Yes, the epoxy housing provides chemical resistance, while the glass membrane and platinum electrodes are designed to withstand corrosive solutions commonly encountered in chemical processing applications.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Chemical Manufacturing sector.

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