EXTT-TX-WIRE

Supported Applications

The Omega T Type Thermocouple Duplex Extension Wire series provides extension-grade cabling for thermocouple temperature measurement systems. As documented in the product overview, this wire is categorized as "Thermocouple Wire Duplex Extension Grade" and supports various ANSI types including JX, TX, KX, EX, RX/SX, BX, CX, and Thermistor/RTD extension configurations.

Operating Conditions & Performance

The series is defined by specific maximum temperature limits that vary according to the insulation material selected. For ANSI Type TX (Copper/Constantan) duplex wire with PFA or FEP insulation, the documented maximum temperature is 100°C (212°F). Polyvinyl-insulated variants within this type are rated for a maximum of 105°C (221°F), while other types in the broader family data sheet list ratings up to 260°C (500°F) or higher depending on insulation. The specification tables note that "Maximum temperature is for extension-grade wire or insulation, whichever is lower."

Temperature Ratings by Insulation Type

• PFA / Neoflon: 100°C (212°F) for TX type; up to 260°C (500°F) for CX type.
• FEP: 100°C (212°F) for TX type; up to 260°C (500°F) for other types.
• Polyvinyl: 105°C (221°F).
• Glass Braid: Ratings vary by type, including 200°C (392°F), 482°C (900°F) for Thermistor/RTD wire.

Configuration Options

The series offers a wide range of configurations across conductor construction, insulation materials, and AWG sizes. The documented envelope includes solid conductors as well as stranded options such as "7 x 24", "7 x 28", and "7 x 32" constructions.

Insulation Materials

The series supports the following insulation materials for conductor and overall jacketing:

• PFA (Polytetrafluoroethylene)
• FEP (Fluorinated Ethylene Propylene)
• Polyvinyl
• Glass Braid

Conductor Sizes and Construction

American Wire Gauge (AWG) options include 14, 16, 20, 24, and 26. Conductor construction is available as Solid or Stranded (e.g., "7 x 28" for AWG 20). Nominal sizes are provided in millimeters and inches; for example, the PFA-insulated TX-16 variant measures 2.2 x 3.9 mm (0.086 x 0.152 inch).

Special Options

To order special limits of error wire, add "SLE" to the model number before spool length. The series also includes variants with specific braid types for Nextel Ceramic insulation (XC standard braid, XT tight braid, XL light-duty braid), which affect the amount of material used in manufacturing.

Key Product Differences

The product line distinguishes between thermocouple extension grades and Thermistor/RTD extension wire. While this specific series page focuses on T Type (TX) Duplex Extension Wire, the underlying data sheet covers multiple ANSI types with distinct conductor compositions:

• ANSI Type TX: Copper/Constantan duplex.
• Thermistor and RTD Extension Wire: Nickel-Plated Copper wire configurations (e.g., 2, 3, or 4 conductors).

Model numbers follow a structured format indicating insulation type, AWG number, conductor construction, and thermocouple type. For example, "EXTT-T-16" denotes PFA-insulated TX wire with solid 16 AWG conductors.