Structured Manufacturing Data (2026)

Sensor Head / Tube

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Sensor Head / Tube used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Sensor Head / Tube is characterized by the integration of Sensing Filament/Element and Tube Body/Housing. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The sensing element of a vacuum gauge that directly interacts with the vacuum environment to measure pressure.

Product Specifications

Technical details and manufacturing context for Sensor Head / Tube

Definition
A critical component of vacuum gauges that houses the sensing mechanism (such as a Pirani filament, thermocouple, or ionization source) and provides the interface between the measurement electronics and the vacuum chamber. It is designed to maintain vacuum integrity while accurately transmitting pressure-dependent signals.
Working Principle
The sensor head/tube contains the active sensing element whose physical properties (e.g., resistance, temperature, ionization current) change in response to gas pressure in the vacuum environment. These changes are measured by external electronics to determine the pressure.
Common Materials
Stainless Steel, Glass, Ceramic
Technical Parameters
  • Outer diameter and length of the tube for flange or connection compatibility. (mm) Customizable
Components / BOM
  • Sensing Filament/Element Part
    The core component whose property (resistance, temperature) changes with pressure.
    Material: Tungsten, Platinum, or Nickel
  • Tube Body/Housing Part
    Provides a vacuum-tight enclosure and mechanical connection to the system.
    Material: Stainless Steel or Glass
  • Electrical Feedthrough
    Provides electrical connection from the sensing element to external electronics while maintaining vacuum seal.
    Material: Ceramic or Glass

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sensor Head / Tube.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 1e-9 mbar to 1000 mbar (measurement range), 2 bar absolute (max pressure rating)
other spec: Flow rate: 0-10 L/min (gas), Slurry concentration: Not applicable (solid-free environments only)
temperature: -20°C to 150°C (operating), up to 200°C (short-term exposure)
Media Compatibility
✓ Clean dry gases (N2, Ar, He) ✓ High vacuum environments (UHV applications) ✓ Semiconductor process gases
Unsuitable: Corrosive/condensing environments (HCl, HF, water vapor at dew point)
Sizing Data Required
  • Required pressure measurement range (mbar/Torr)
  • Process gas composition and cleanliness
  • Required accuracy and response time

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Signal drift or loss
Cause: Internal electronic component degradation due to thermal cycling, moisture ingress, or vibration-induced fatigue, leading to unstable or absent output signals.
Physical damage or blockage
Cause: External impact, abrasive particle accumulation, or chemical corrosion compromising the sensor head/tube integrity, resulting in inaccurate readings or complete failure.
Maintenance Indicators
  • Inconsistent or erratic readings on the monitoring system, indicating potential signal instability.
  • Visible cracks, corrosion, or deformation on the sensor head or tube housing, suggesting physical compromise.
Engineering Tips
  • Implement regular calibration and environmental sealing checks to prevent moisture ingress and ensure signal accuracy.
  • Install protective shielding or mounting brackets to minimize vibration exposure and physical impacts from surrounding equipment.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems IEC 60529 Degrees of Protection Provided by Enclosures (IP Code) ASTM E1444/E1444M Standard Practice for Magnetic Particle Testing
Manufacturing Precision
  • Bore Diameter: +/-0.01mm
  • Surface Finish: Ra 0.4μm
Quality Inspection
  • Helium Leak Test
  • Dimensional Verification via CMM

Factories Producing Sensor Head / Tube

Manufacturer profiles with relevant production capability in China

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are used in vacuum gauge sensor heads/tubes?

Our sensor heads/tubes are constructed from durable materials including stainless steel for corrosion resistance, glass for transparency and chemical inertness, and ceramic for high-temperature stability in demanding industrial environments.

How does a sensor head/tube measure vacuum pressure?

The sensor head/tube contains a sensing filament/element that directly interacts with the vacuum environment. As pressure changes, the filament's electrical properties alter, allowing precise measurement of vacuum levels in machinery and equipment applications.

What are the main components of a vacuum gauge sensor head/tube?

Key components include the electrical feedthrough for signal transmission, the sensing filament/element that detects pressure changes, and the tube body/housing that protects internal components while maintaining vacuum integrity in industrial settings.

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 Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

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