Editorial Technical Reference

Conductivity Probe

This page explains how Conductivity Probe is classified within Food Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A sensor that measures the electrical conductivity of a solution to monitor cleaning effectiveness in CIP systems.

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Product Specifications

Technical details and manufacturing context for Conductivity Probe

Definition
A conductivity probe is a critical component within a Clean-in-Place (CIP) system used to measure the electrical conductivity of cleaning solutions in real-time. It ensures proper chemical concentration during cleaning cycles by detecting changes in solution conductivity, which correlates with detergent or sanitizer strength. This allows for automated control of chemical dosing and rinse cycles to maintain cleaning efficacy while optimizing water and chemical usage. The probe is designed for integration into food manufacturing processes, where hygiene and process control are paramount. It features a robust construction with wetted materials of 316L stainless steel and PEEK, ensuring corrosion resistance and food-grade compatibility. The probe operates within a measuring range of 0–1000 µS/cm, with an accuracy of ±1% of reading, and a response time of ≤5 seconds, enabling rapid adjustments during cleaning cycles. It is suitable for operating temperatures from -10 to 100 °C and pressures up to 10 bar, accommodating typical CIP conditions. The ingress protection rating of IP68 (per IEC 60529) allows for submersible installation in tanks. The probe requires a 24 V DC supply (±10%) and provides a 4–20 mA analog output for seamless integration with PLCs. The process connection is a G1/2 thread per DIN 3852, and the standard cable length is 5 meters, with custom lengths available. The weight is 0.5 kg, facilitating easy handling. For any specific application, it is essential to verify model-specific values and standards with the legal manufacturer or supplier to ensure suitability and compliance.
Working Principle
The probe measures the ability of an aqueous solution to conduct an electric current between two electrodes. Higher ion concentration (from cleaning chemicals) increases conductivity, which is measured in microsiemens per centimeter (µS/cm). The probe transmits this signal to the CIP controller for process monitoring and adjustment.
Common Materials
Stainless Steel (316L), Platinum Electrodes, PTFE Insulation
Technical Parameters
ParameterTypical rangeNotes & selection driver
Measuring Range0–1000 µS/cmCovers typical CIP cleaning solutions
Accuracy±1% of readingEnsures reliable monitoring
Response Time≤5 sFast response for process control
Operating Temperature-10–100 °CSuitable for hot CIP solutions
Operating Pressure0–10 barWithstands typical CIP pressures
Ingress ProtectionIP68Submersible for tank installationIEC 60529
Supply Voltage24 ±10% V DCStandard industrial supply
Output Signal4–20 mAAnalog output for PLC integration
Process ConnectionG1/2 inchCommon sanitary fittingDIN 3852
Wetted Materials316L/PEEKFood-grade and corrosion resistantASTM A240
Cable Length5 mStandard length, custom available
Weight0.5 kgLightweight for easy handling

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Electrode Pair Part
    Creates electrical field for conductivity measurement
    Material: Platinum
  • Probe Body Part
    Houses electrodes and provides process connection
    Material: Stainless Steel 316L
  • Cable Connection Part
    Transmits electrical signal to controller
    Material: Stainless Steel/PTFE

Applied To / Applications

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

CIP System
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
flow rate: 0.1 to 5 m/s
temperature: -10°C to +100°C
slurry concentration: Up to 15% solids by weight
Media Compatibility
✓ Aqueous cleaning solutions (acidic/alkaline) ✓ Food-grade CIP fluids (caustic, acid, sanitizer) ✓ Deionized water and rinse solutions
Unsuitable: Hydrofluoric acid or highly concentrated sulfuric acid environments
Sizing Data Required
  • Required conductivity measurement range (μS/cm or mS/cm)
  • Pipe diameter or vessel size for installation
  • Process temperature and pressure conditions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Electrode Fouling/Coating
Cause: Accumulation of scale, biological growth, or process deposits on electrode surfaces, which insulates the electrodes and causes inaccurate or drifting conductivity readings.
Cable/Connector Degradation
Cause: Moisture ingress, chemical attack, mechanical stress, or corrosion at cable terminations or probe connectors, leading to signal loss, noise, or short circuits.
Maintenance Indicators
  • Erratic or drifting conductivity readings that do not stabilize, especially when compared to lab samples or other instruments.
  • Visible physical damage to the probe body, such as cracks, severe corrosion, or a compromised cable sheath near the connection point.
Engineering Tips
  • Implement a regular cleaning schedule using manufacturer-recommended methods (e.g., mild acid wash for scale, soft brush for biofilms) to prevent persistent electrode fouling.
  • Ensure proper cable management and use waterproof, chemically resistant junction boxes or connectors to protect the electrical connections from environmental and mechanical stress.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 7888:1985 - Water quality - Determination of electrical conductivity ASTM D1125-23 - Standard Test Methods for Electrical Conductivity and Resistivity of Water IEC 60746-3:2002 - Expression of performance of electrochemical analyzers - Part 3: Electrolytic conductivity

Quoted from the published standard.

Manufacturing Precision
  • Electrode spacing tolerance: +/- 0.05 mm
  • Cell constant accuracy: +/- 1% of nominal value
Quality Inspection
  • Calibration verification against certified reference solutions
  • Leak test under pressure to ensure housing integrity

Manufacturers of Conductivity Probe

Manufacturer profiles associated with Conductivity Probe.

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Frequently Asked Questions

What is the measuring range of this conductivity probe?

The measuring range is 0–1000 µS/cm, which covers typical CIP cleaning solutions. However, always verify the exact range for your specific model and application with the manufacturer.

What output signal does the probe provide?

The probe provides a 4–20 mA analog output, which is standard for integration with PLCs. This allows for real-time monitoring and control in CIP systems.

Can the probe be used in high-temperature cleaning solutions?

Yes, the operating temperature range is -10 to 100 °C, making it suitable for hot CIP solutions. Ensure that the actual process conditions stay within these limits.

What materials come into contact with the process medium?

The wetted materials are 316L stainless steel and PEEK, which are food-grade and corrosion resistant. Confirm material compatibility with your specific cleaning chemicals.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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