EXGG-KX-WIRE

Supported Applications

The Omega EXGG-KX-WIRE series provides extension grade thermocouple wires designed for Chromel/Alumel (Type KX), Constantan (Type EX), and Copper/Alloy#11 (Type RX/SX) thermocouples. These duplex wires are specified to extend the signal from a thermocouple sensor to an instrument or controller while maintaining electrical compatibility with the sensing element.

ANSI color codes are applied for each type as documented in the series specifications. The product overview notes that IEC color code options are available via omega.com, distinct from the standard ANSI coding provided on these models.

Operating Conditions & Performance

The maximum operating temperature is defined by the insulation material and wire construction, with a note stating: "Maximum temperature is for extension grade wire or insulation, whichever is lower." The series supports three primary thermal envelopes based on insulation type:

• Glass Braid Insulation (EXGG): Rated to 200°C (392°F).
• Neoflon PFA and Neoflon FEP Insulation (EXTT, EXFF): Rated to 200°C (392°F).
• Polyvinyl Insulation (EXPP): Rated to 105°C (221°F).

Nominal dimensions vary by AWG size and insulation type. For example, the EXGG-K-16 model with Glass Braid insulation measures 2.2 x 3.3 mm (0.085 x 0.130 in), while the Polyvinyl-insulated EXPP-K-14 is larger at 3.4 x 7.3 mm (0.134 x 0.288 in). Weight specifications are provided per spool length, such as 9 kg/300m (17 lb/1000') for the EXGG-K-16.

Configuration Options

The series offers a broad configuration of thermocouple types, insulation materials, conductor constructions, and spool lengths. Selection is driven by environmental temperature limits, flexibility requirements, and installation length needs.

Thermocouple Types & Insulation Materials

• Type KX (Chromel/Alumel): Available with Glass Braid, Neoflon PFA, Polyvinyl, and Neoflon FEP insulation.
• Type EX (Constantan): Offered in Neoflon PFA, Polyvinyl, and Neoflon FEP insulations.
• Type RX/SX (Platinum/Platinum-Rhodium Compensating): Available with Glass Braid, Neoflon PFA, Polyvinyl, and Neoflon FEP insulation.

Conductor Construction & AWG Sizes

The series supports both solid and stranded conductors across a range of American Wire Gauge (AWG) sizes:

• Solid Conductors: Available in 14, 16, 18, 20, and 24 AWG depending on the insulation type.
• Stranded Conductors: Offered for Polyvinyl-insulated models (e.g., EXPP-K-16S with 7 x 24 strands; EXPP-K-20S with 7 x 28 strands).

Spool Lengths & Special Options

Wires are supplied in various spool lengths to accommodate different installation scales. Standard foot-based options include 25', 50', 100', 200', 500', and 1000'. Metric reel options (denoted by "M" suffixes) range from 7.5M to 300M.

To order special limits of error wire, the series documentation specifies adding "-SLE" to the model number before the spool length designation (e.g., EXTT-K-20-SLE).

Key Product Differences

The primary distinctions within this series are defined by the combination of thermocouple type, insulation material, and conductor style. Model numbers follow a structured format: Type Code - Insulation Type - AWG No.

• EXGG: Denotes Glass Braid insulation (e.g., EXGG-K-16).
• EXTT: Indicates Neoflon PFA insulation (e.g., EXTT-E-20 for Type EX, 20 AWG).
• EXFF: Represents Neoflon FEP insulation.
• EXPP: Signifies Polyvinyl insulation. Models with an "S" suffix (e.g., EXPP-K-16S) indicate stranded conductors, whereas those without the suffix are solid.

The series is manufactured in the USA. Specific dimensional and weight data for each variant can be found in the specification tables corresponding to the insulation type and AWG size selected.