INDUSTRY COMPONENT

Connection Wires

Connection wires for temperature sensor probes transmit electrical signals from sensing elements to control systems.

Component Specifications

Definition
Connection wires are essential electrical components that establish conductive pathways between the temperature sensing element of a probe and external measurement or control instrumentation. These wires carry low-voltage signals (typically millivolt or microamp ranges) representing temperature readings, ensuring minimal signal degradation, electrical noise interference, and thermal error introduction. They consist of insulated conductors with specific electrical properties, shielding configurations, and termination interfaces designed for industrial temperature measurement applications.
Working Principle
Connection wires operate on the principle of electrical conductivity, transmitting analog or digital signals generated by temperature sensing elements (such as thermocouples, RTDs, or thermistors) to data acquisition systems. The wires maintain signal integrity through proper insulation, shielding against electromagnetic interference (EMI), and compensation for thermal effects. In thermocouple applications, extension wires with matching thermoelectric properties prevent measurement errors at junction points.
Materials
Conductor: Copper, copper alloys (constantan, chromel, alumel), nickel, or nickel alloys. Insulation: PTFE (Teflon), FEP, PFA, silicone rubber, fiberglass, or ceramic beads for high-temperature applications. Shielding: Braided copper, aluminum foil, or composite layers. Jacket: PVC, polyurethane, or stainless steel braid for mechanical protection.
Technical Parameters
  • Voltage Rating 300V AC/DC
  • Conductor Gauge AWG 20-28
  • Temperature Range -200°C to +1000°C
  • Insulation Resistance >100 MΩ/km
  • Shielding Effectiveness >90% at 100 MHz
Standards
ISO/IEC 60584, DIN 43710, IEC 60751, ASTM E230

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Connection Wires.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Signal degradation due to improper shielding
  • Thermal drift from inadequate insulation
  • Mechanical failure from vibration or bending fatigue
  • Chemical corrosion in aggressive environments
FMEA Triads
Trigger: Insulation breakdown from excessive temperature or chemical exposure
Failure: Short circuit or signal loss
Mitigation: Use insulation materials rated for the operating environment (e.g., PTFE for high temps, FEP for chemicals); implement regular insulation resistance testing
Trigger: Poor termination or connector corrosion
Failure: Increased contact resistance causing measurement errors
Mitigation: Use gold-plated connectors for corrosion resistance; apply proper crimping or soldering techniques; schedule periodic connector inspections

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Signal transmission error < ±0.1% of full scale; insulation resistance > 100 MΩ at 500V DC
Test Method
Continuity testing with multimeter; insulation resistance test per IEC 60512; thermoelectric verification per ASTM E230 for thermocouple wires

Buyer Feedback

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Frequently Asked Questions

What is the difference between thermocouple extension wires and compensation cables?

Thermocouple extension wires have the same thermoelectric properties as the thermocouple itself and are used to extend the probe to distant instruments without introducing errors. Compensation cables use different, cheaper materials that mimic the thermoelectric behavior only within a limited temperature range, typically for ambient conditions.

How does shielding affect temperature measurement accuracy?

Shielding reduces electromagnetic interference (EMI) from motors, power lines, or radio frequencies that can induce noise in low-voltage signals, causing reading fluctuations or offsets. Proper grounding of the shield at one end prevents ground loops while maintaining signal integrity.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Connection Terminal Connector Body