INDUSTRY COMPONENT

Connection Head

Connection head for molten metal temperature sensor probes, providing secure electrical and mechanical interface between sensor element and instrumentation.

View Specifications

Component Specifications

Definition
A critical component of molten metal temperature sensor probes that serves as the interface between the sensitive thermocouple or RTD element and external instrumentation. It provides mechanical protection, electrical connection integrity, and environmental sealing while maintaining thermal isolation from the harsh molten metal environment. The connection head typically houses terminal blocks, compensation circuits, and sealing mechanisms to ensure accurate temperature measurement transmission.
Working Principle
The connection head functions as an interface module that converts the millivolt signals from thermocouples or resistance changes from RTDs into stable electrical signals for transmission to temperature controllers or data acquisition systems. It incorporates cold junction compensation for thermocouples, signal conditioning circuits, and provides mechanical strain relief for connecting cables while maintaining electrical isolation and environmental protection.
Materials
High-temperature ceramic insulation (Alumina 99.5%), stainless steel housing (316L or 310S), nickel-plated copper terminals, silicone or ceramic fiber gaskets, high-temperature epoxy seals. Materials must withstand temperatures up to 200°C ambient and provide corrosion resistance against metal vapors.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Terminal TypeScrew terminals or quick-disconnect
Housing MaterialStainless Steel 316L
Protection ClassIP67 minimum
Temperature Range-40°C to 200°C (ambient)
Compensation Accuracy±0.5°C for thermocouples
Electrical ConnectionM12x1 or 1/2" NPT threaded
Insulation Resistance>100 MΩ at 500VDC

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 43735, IEC 60584, ASTM E230

Parent Products

This component is used in the following industrial products

Molten Metal Temperature Sensor Probe

High-temperature immersion probe for continuous molten metal temperature monitoring

View Product Details

Temperature Sensor

A device that measures temperature within a heating zone and provides feedback for temperature control systems.

View Product Details

Temperature Probe

The Temperature Probe is a critical component of the Industrial Chemical Crystallization Unit, responsible for precise temperature monitoring and feedback.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thermal damage from proximity to molten metal
  • Corrosion from metal vapors
  • Electrical noise interference
  • Mechanical vibration fatigue
  • Moisture ingress compromising insulation
FMEA Triads
Trigger: Inadequate thermal isolation from molten metal source
Failure: Overheating of internal components leading to signal drift or complete failure
Mitigation: Install thermal barriers, increase distance from heat source, use heat shields, select higher temperature-rated components
Trigger: Corrosive metal vapors (zinc, aluminum, magnesium)
Failure: Degradation of electrical contacts and housing corrosion
Mitigation: Use vapor-resistant materials (310S stainless), apply protective coatings, implement regular cleaning protocols
Trigger: Mechanical vibration from nearby equipment
Failure: Loosening of terminal connections and cable strain relief
Mitigation: Install vibration dampeners, use locking connectors, implement torque-controlled installation, regular tightening checks

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.5°C for temperature compensation circuits, ±0.1mm for mechanical dimensions
Test Method
IEC 60584 for thermocouple compensation verification, IP67 immersion testing, vibration testing per IEC 60068-2-6

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 Connection Head

Manufacturer profiles associated with Connection Head.

Sourcing Connection Head from China?
Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.
Request manufacturers We manufacture this

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

Related Components

Valve Body
Valve body is the main structural housing of a molten metal flow control valve, designed to withstand extreme temperatures and corrosive environments while directing metal flow.
Refractory Liner
Refractory liner for molten metal flow control valves, providing thermal insulation and erosion resistance in extreme temperature applications.
Work Rolls
Work rolls are precision cylindrical components in heavy-duty rolling mills that directly contact and deform metal during rolling operations.
Venting Channels
Venting channels are precision-engineered passages in metal casting mold cores designed to allow gases to escape during the molten metal pouring process, preventing defects and ensuring high-quality castings.

Frequently Asked Questions

What is the maximum ambient temperature for connection heads in molten metal applications?

Connection heads are typically rated for ambient temperatures up to 200°C, though the sensor tip can withstand much higher temperatures (up to 1800°C for some thermocouples). The head must be positioned sufficiently distant from the molten metal to prevent overheating.

How often should connection heads be inspected in continuous casting operations?

Monthly visual inspections are recommended, with complete functional testing every 6 months. In high-vibration environments or with frequent thermal cycling, inspection frequency should increase to quarterly.

Can connection heads be used interchangeably between different sensor manufacturers?

While some standardized connections exist (M12, NPT), electrical pin configurations and compensation circuits may vary. Always verify compatibility with specific sensor types (Type K, R, S thermocouples or specific RTD types).

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.

Request Manufacturing Insight for Connection Head

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.
Zinc Coating
Get QuotesChat