Probe Body / Sheath: Temperature Range -50°C to 400°C

Component Specifications

Definition

The probe body or sheath is a critical component of temperature and pH probes, serving as the protective outer casing that houses the sensing elements. It provides mechanical protection, chemical resistance, and thermal insulation while allowing accurate measurement transmission. In industrial settings, it ensures sensor longevity and measurement reliability in harsh environments.

Working Principle

The probe body/sheath functions as a protective barrier that isolates sensitive sensing elements from external conditions while allowing thermal or chemical interaction for accurate measurements. It maintains structural integrity and prevents contamination of the sensing surface.

Materials

Stainless steel (316L, 304), Hastelloy, titanium, PTFE, PEEK, ceramic, glass. Material selection depends on chemical compatibility, temperature range, and pressure requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	50mm to 1000mm
Diameter	3mm to 25mm
IP Rating	IP67/IP68
Thread Type	G1/2, NPT, M12, M20
Pressure Rating	Up to 100 bar
Insertion Length	Standardized based on application
Temperature Range	-50°C to 400°C

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

Standards

ISO 9001, DIN 43760, IEC 60751, ASTM E1137

Parent Products

This component is used in the following industrial products

Temperature & pH Probes

Integrated sensor assembly for simultaneous monitoring of temperature and pH levels within a neutralization reactor.

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Sensor Probe

The sensing element of a level sensor assembly that directly contacts or interacts with the material being measured.

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Engineering Analysis

Risks & Mitigation

Material incompatibility with process media
Thermal stress cracking
Mechanical damage from abrasion
Thread corrosion leading to leaks
Inadequate pressure rating

FMEA Triads

Trigger: Chemical attack on sheath material
Failure: Corrosion leading to process contamination and sensor failure
Mitigation: Material compatibility testing and protective coatings

Trigger: Thermal cycling stress
Failure: Crack formation and loss of sealing integrity
Mitigation: Use materials with matching thermal expansion coefficients and stress relief designs

Trigger: Mechanical impact during installation
Failure: Deformation affecting measurement accuracy
Mitigation: Proper installation procedures and protective mounting accessories

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5mm diameter, ±1mm length, surface finish Ra ≤ 0.8μm

Test Method

Pressure testing per ISO 15848, material verification per ASTM standards, dimensional inspection per GD&T principles

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Probe Body / Sheath

Manufacturer profiles associated with Probe Body / Sheath.

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Frequently Asked Questions

What materials are best for corrosive environments?

Hastelloy C-276, titanium, or PTFE-coated sheaths provide excellent corrosion resistance in acidic or alkaline conditions.

How does sheath material affect measurement accuracy?

Material thermal conductivity impacts response time; thinner walls and higher conductivity materials improve response but may reduce durability.

Can probe sheaths be customized for specific applications?

Yes, custom lengths, diameters, materials, and thread types are available for specialized industrial requirements.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Probe Body / Sheath