Editorial Technical Reference

Termination

This page explains how Termination is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The termination is the electrical interface component located at the end of a temperature sensor probe's lead wires or cable.

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Product Specifications

Technical details and manufacturing context for Termination

Definition
The termination is the electrical interface component located at the end of a temperature sensor probe's lead wires or cable. It provides the physical and electrical connection point for interfacing the sensor with measurement instruments, controllers, or data acquisition systems. Within a temperature sensor probe assembly, it ensures reliable signal transmission from the sensing element to external equipment. The termination typically consists of metal contacts (such as pins, tabs, or screw terminals) housed within an insulating body. When mated with a compatible connector or terminal block, it completes the electrical circuit, allowing the low-voltage signal (from resistance change in RTDs or voltage in thermocouples) generated by the sensor's sensing element to be transmitted without significant loss or interference. Materials commonly used for the termination include copper alloys (e.g., brass, phosphor bronze), nickel-plated steel, and high-temperature plastics (e.g., PPS, PEEK). The specific termination type (e.g., miniature thermocouple connector, M12 connector, screw terminal, bare wire lead) is a key specification that must be selected based on the application's environmental conditions, mating requirements, and signal integrity needs. Verification of model-specific values and standards with the legal manufacturer or supplier is essential before procurement or installation.
Working Principle
The termination functions by providing a secure mechanical and electrical junction. It typically consists of metal contacts (pins, tabs, or screw terminals) housed within an insulating body. When mated with a compatible connector or terminal block, it completes the electrical circuit, allowing the low-voltage signal (from resistance change in RTDs or voltage in thermocouples) generated by the sensor's sensing element to be transmitted without significant loss or interference.
Common Materials
Copper Alloy (e.g., Brass, Phosphor Bronze), Nickel-Plated Steel, High-Temperature Plastic (e.g., PPS, PEEK)
Technical Parameters

What to specify in your RFQ

  • Termination type (e.g., Miniature Thermocouple Connector, M12 Connector, Screw Terminal, Bare Wire Lead).

These are the quantities to specify to the manufacturer when sizing or requesting a quote. The manufacturer's own documentation governs the exact figures and applicable standard.

Components / BOM
  • Contact Pin/Terminal Part
    Provides the conductive path for the electrical signal.
    Material: Copper Alloy, Nickel-Plated Steel
  • Insulating Housing Part
    Encases and electrically isolates the contacts, provides mechanical structure and environmental sealing.
    Material: High-Temperature Plastic, Ceramic
  • Strain Relief Part
    Secures the probe cable to the termination body to prevent wire pull-out and damage.
    Material: Rubber, Plastic

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 10 bar (dependent on housing seal rating)
other spec: Wire gauge: 12-24 AWG, Insulation resistance: >100 MΩ at 500V DC
temperature: -40°C to 150°C (typical for standard insulation materials)
Media Compatibility
✓ Control panel enclosures (dry environments) ✓ Process instrumentation cabinets ✓ HVAC system terminal blocks
Unsuitable: Submerged or high-humidity environments without IP67+ sealing
Sizing Data Required
  • Wire conductor diameter (AWG/mm²)
  • Insulation material temperature class
  • Required ingress protection (IP) rating

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced degradation
Cause: Exposure to moisture, chemicals, or environmental contaminants leading to oxidation, pitting, or galvanic corrosion at termination points, compromising electrical continuity and mechanical integrity.
Thermal cycling fatigue
Cause: Repeated heating and cooling cycles from electrical load variations or ambient temperature changes causing expansion/contraction stresses, leading to loosening, cracking, or creep in termination connections.
Maintenance Indicators
  • Visible discoloration, oxidation, or charring at termination points indicating overheating
  • Audible arcing, buzzing, or intermittent connection sounds from termination areas
Engineering Tips
  • Apply appropriate anti-oxidation compounds and use corrosion-resistant materials matched to the operating environment during installation
  • Implement regular torque verification and thermal imaging inspections to detect loose connections before failure occurs

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI/ASME B18.3 - Socket Cap, Shoulder, and Set Screws DIN 267 - Fasteners; technical delivery conditions

Quoted from the published standard.

Manufacturing Precision
  • Thread pitch: +/-0.025mm
  • Surface finish: Ra 1.6μm max
Quality Inspection
  • Torque-to-failure test
  • Salt spray corrosion test (ASTM B117)
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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Termination

Manufacturer profiles associated with Termination.

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Frequently Asked Questions

What is the purpose of a termination in a temperature sensor probe?

The termination provides the electrical and mechanical connection point between the sensor's lead wires and external equipment, ensuring reliable signal transmission.

What materials are commonly used for terminations?

Common materials include copper alloys (e.g., brass, phosphor bronze), nickel-plated steel, and high-temperature plastics like PPS and PEEK.

How do I choose the right termination type?

Selection depends on the application's environmental conditions, mating connector compatibility, and signal integrity requirements. Verify with the manufacturer.

Are there standards that apply to terminations?

Standards may apply depending on the type and application, but none are listed in the source facts. Always verify with the manufacturer.

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

Related equipment

Applied To / Applications

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

Temperature Sensor Probe
View system integration details

Industrial Ecosystem & Supply Chain Structure

Data Basis

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

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.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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