Protective Housing/Probe for Oxygen Sensors

Product Specifications

Technical details and manufacturing context for Protective Housing/Probe

Definition

The protective housing/probe is a component used in oxygen sensors and analyzers. It consists of a durable outer casing that shields the sensing elements from environmental factors such as moisture, dust, chemicals, and mechanical damage, while allowing gas diffusion through filters or membranes. The probe itself contains the sensing mechanism—either electrochemical (e.g., zirconia cells, galvanic cells) or optical (e.g., fluorescence quenching, paramagnetic detection)—that directly interacts with the oxygen sample. The housing provides physical protection and environmental sealing, ensuring the sensor operates reliably in demanding industrial environments. This product is typically used in process control, emissions monitoring, and safety applications where accurate oxygen measurement is critical. The housing is available in materials such as stainless steel (316L), ceramic (alumina), PTFE/Teflon, and glass, offering corrosion resistance and compatibility with various process conditions. Key parameters include operating temperature (-40 to 85 °C), ingress protection (IP65–IP67 per IEC 60529), response time (≤15 s for 90% of final value), accuracy (±1% FS at reference conditions), supply voltage (9–36 V DC), output signal (4–20 mA, two-wire loop powered), probe length (100–500 mm), housing material (316L per ASTM A276), and weight (0.5–2.0 kg). These values are reference ranges and must be verified for the specific model and application. The product is designed for integration into oxygen analysis systems, and selection depends on process conditions, required accuracy, and environmental exposure. For proper operation, ensure that the housing is correctly installed, the probe is compatible with the gas stream, and that maintenance is performed as recommended. Verification of model-specific values and standards should be done with the legal manufacturer or supplier.

Working Principle

The housing protects the sensing elements while allowing gas diffusion through filters or membranes. The probe contains sensing electrodes or optical elements that generate electrical signals proportional to oxygen concentration. Electrochemical methods include zirconia cells and galvanic cells, while optical methods include fluorescence quenching and paramagnetic detection. These signals are then processed to provide an oxygen concentration reading.

Common Materials

Stainless steel (316L), Ceramic (alumina), PTFE/Teflon, Glass

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Temperature	-40–85 °C	Exceeding limits may damage sensor
Ingress Protection	IP65–IP67	Higher rating for outdoor useIEC 60529
Response Time	≤15 s	For 90% of final value
Accuracy	±1 % FS	At reference conditions
Supply Voltage	9–36 V DC	Reverse polarity protected
Output Signal	4–20 mA	Two-wire loop powered
Probe Length	100–500 mm	Custom lengths available
Housing Material	316L	Corrosion resistantASTM A276
Weight	0.5–2.0 kg	Depends on length

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

Probe Tip/Sensing Element Part
Contains electrochemical cells or optical elements that detect oxygen concentration

Material: Platinum, zirconia, or fluorescent material
Gas Permeable Membrane Part
Allows oxygen diffusion while protecting sensing elements from contaminants

Material: PTFE, silicone, or specialized polymers
Housing Body Part
Provides structural integrity and environmental protection

Material: Stainless steel or corrosion-resistant alloy
Electrical Connector Part
Transmits sensor signals to analyzer electronics

Material: Brass with gold plating
Sealing Gaskets Part
Ensures environmental sealing at connection points

Material: Viton, EPDM, or PTFE

Applied To / Applications

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

Oxygen Sensor/ Analyzer

View system integration details

Manufacturers of Protective Housing/Probe

Manufacturer profiles associated with Protective Housing/Probe.

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Frequently Asked Questions

What materials are available for the housing?

The housing can be made of stainless steel (316L), ceramic (alumina), PTFE/Teflon, or glass, depending on the application requirements.

What is the operating temperature range?

The operating temperature range is -40 to 85 °C. Exceeding these limits may damage the sensor.

What is the ingress protection rating?

The ingress protection rating is IP65 to IP67 per IEC 60529, with higher ratings suitable for outdoor use.

How does the probe measure oxygen?

The probe uses either electrochemical methods (e.g., zirconia cells, galvanic cells) or optical methods (e.g., fluorescence quenching, paramagnetic detection) to generate a signal proportional to oxygen concentration.

Data Basis

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

Preliminary Technical Classification

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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

Protective Housing/Probe

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards