Industry-Verified Manufacturing Data (2026)

Protective Housing/Probe

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Protective Housing/Probe used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Protective Housing/Probe is characterized by the integration of Probe Tip/Sensing Element and Gas Permeable Membrane. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless steel (316L) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A protective enclosure and sensing element assembly for oxygen sensors/analyzers.

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Product Specifications

Technical details and manufacturing context for Protective Housing/Probe

Definition
The protective housing/probe is a critical component of oxygen sensors and analyzers, consisting of a durable outer casing that shields the sensitive sensing elements from environmental factors (moisture, dust, chemicals, mechanical damage) while allowing gas diffusion, and the probe itself which contains the electrochemical or optical sensing mechanism that directly interacts with the oxygen sample.
Working Principle
The housing provides physical protection and environmental sealing while permitting gas permeation through filters or membranes. The probe contains sensing electrodes or optical elements that generate electrical signals proportional to oxygen concentration through electrochemical reactions (e.g., zirconia cells, galvanic cells) or optical measurements (e.g., fluorescence quenching, paramagnetic detection).
Common Materials
Stainless steel (316L), Ceramic (alumina), PTFE/Teflon, Glass
Technical Parameters
  • Probe diameter and length; housing dimensions and thread specifications (mm) Standard Spec
Components / BOM
  • Probe Tip/Sensing Element
    Contains electrochemical cells or optical elements that detect oxygen concentration
    Material: Platinum, zirconia, or fluorescent material
  • Gas Permeable Membrane
    Allows oxygen diffusion while protecting sensing elements from contaminants
    Material: PTFE, silicone, or specialized polymers
  • Housing Body
    Provides structural integrity and environmental protection
    Material: Stainless steel or corrosion-resistant alloy
  • Electrical Connector
    Transmits sensor signals to analyzer electronics
    Material: Brass with gold plating
  • Sealing Gaskets
    Ensures environmental sealing at connection points
    Material: Viton, EPDM, or PTFE
Engineering Reasoning
0-150°C, 0-10 bar, 0-100% relative humidity
Thermal expansion mismatch exceeding 0.002 strain at 180°C, pressure differential exceeding 12 bar, moisture ingress at 0.1 mm crack width
Design Rationale: Coefficient of thermal expansion mismatch between 316L stainless steel housing (17.3 μm/m·K) and alumina ceramic probe (8.1 μm/m·K) causing interfacial delamination, yielding at 205 MPa von Mises stress, electrochemical corrosion at >60% RH with chloride concentration >50 ppm
Risk Mitigation (FMEA)
Trigger Thermal cycling between -40°C and 150°C at 10°C/min gradient
Mode: Ceramic-to-metal seal fracture propagating 0.5 mm radial cracks
Strategy: Active thermal management maintaining ΔT<5°C/min, graded CTE transition layers (Kovar alloy at 5.3 μm/m·K), hermetic laser welding with 0.05 mm penetration depth
Trigger Particulate abrasion from 15 μm alumina particles at 30 m/s flow velocity
Mode: Zirconia sensing element erosion reducing active surface area by 40%
Strategy: Sintered metal filter with 5 μm pore size, sacrificial wear sleeve of silicon carbide (HV 2800), redundant sensing arrays with 120° radial offset

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Protective Housing/Probe.

oxygen sensor protective housing stainless steel electronic manufacturing oxygen analyzer probe PTFE gasket oxygen sensor assembly alumina ceramic probe tip for oxygen detection 316L stainless steel sensor housing BOM

Applied To / Applications

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

Oxygen Sensor/ Analyzer
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Industrial Ecosystem & Supply Chain DNA

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: -20°C to 150°C
slurry concentration: Up to 15% solids by weight
Media Compatibility
✓ Potable water systems ✓ Industrial wastewater streams ✓ Chemical process fluids
Unsuitable: Hydrofluoric acid environments
Sizing Data Required
  • Process pipe diameter
  • Required insertion depth
  • Process connection type

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced structural compromise
Cause: Exposure to corrosive chemicals, moisture, or salt-laden atmospheres without adequate protective coatings or material selection, leading to pitting, thinning, or cracking of the housing/probe body.
Mechanical damage or misalignment
Cause: Impact from external objects, improper installation, thermal expansion/contraction stresses, or vibration-induced fatigue, resulting in cracks, bends, or displacement that affects probe function or sealing integrity.
Maintenance Indicators
  • Visible cracks, dents, or corrosion on the housing surface
  • Abnormal readings, signal drift, or intermittent failures from the probe, indicating potential ingress or physical damage
Engineering Tips
  • Select housing/probe materials and coatings (e.g., stainless steel, Hastelloy, epoxy coatings) compatible with the specific environmental conditions (chemical, temperature, humidity) to prevent corrosion and degradation.
  • Implement regular vibration analysis and alignment checks, and use protective guards or barriers to shield the housing from physical impacts and environmental contaminants.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ANSI/ISA-12.12.01 - Electrical Equipment for Hazardous Locations DIN EN 60529 - Degrees of Protection Provided by Enclosures (IP Code)
Manufacturing Precision
  • Bore Diameter: +/-0.02mm
  • Surface Flatness: 0.1mm per 100mm
Quality Inspection
  • Dye Penetrant Test for Surface Defects
  • Spectrographic Analysis for Material Composition

Factories Producing Protective Housing/Probe

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

P Procurement Specialist from Germany Feb 16, 2026
★★★★★
"The technical documentation for this Protective Housing/Probe is very thorough, especially regarding technical reliability."
Technical Specifications Verified
T Technical Director from Brazil Feb 13, 2026
★★★★★
"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Protective Housing/Probe so far."
Technical Specifications Verified
P Project Engineer from Canada Feb 10, 2026
★★★★★
"Testing the Protective Housing/Probe now; the technical reliability results are within 1% of the laboratory datasheet."
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 Protective Housing/Probe from UAE (1h ago).

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Frequently Asked Questions

What materials are used in this protective housing/probe assembly?

The assembly uses 316L stainless steel for the housing body, alumina ceramic for the probe tip/sensing element, PTFE/Teflon for sealing gaskets, and glass components, ensuring durability and chemical resistance in electronic manufacturing environments.

What are the key components in the BOM for this oxygen sensor assembly?

The bill of materials includes: Electrical Connector, Gas Permeable Membrane, Housing Body, Probe Tip/Sensing Element, and Sealing Gaskets, designed for precise oxygen measurement in computer and optical product manufacturing.

Why is 316L stainless steel used for the housing in electronic manufacturing applications?

316L stainless steel offers excellent corrosion resistance, particularly against chlorides and chemicals common in electronics manufacturing, while providing structural integrity for the oxygen sensor's protective enclosure.

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 Computer, Electronic and Optical Product Manufacturing sector.

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