Fluke 5440A-7002 Low Thermal Test Lead Set

The Fluke 5440A-7002 is a low thermal EMF test lead set engineered as a precision accessory for Fluke 5440 Series calibrators. This set minimizes thermal electromotive force errors across lead terminations, delivering superior accuracy in high-precision temperature measurement and calibration workflows where thermal EMF drift directly impacts measurement integrity.

Technical Specifications

Connector Type: Safety type connectors with retractable spring-loaded hood

Connector Diameter: 4 mm

Cable Configuration: Two parallel coaxial cables (RG-58/U type) for high and low connections; third blue wire bonded to shields of both coaxials

Center Conductor Material: Tellurium copper

Spring Tip Material: Beryllium copper

Included Leads: – One 5440A-7005 lead: 122 cm (4 feet) – Two 5440A-7004 leads: 61 cm (2 feet) each

Key Features

Tellurium copper center conductors paired with beryllium copper spring tips reduce thermal EMF generation compared to standard test leads

Dual coaxial construction isolates high and low signal paths, minimizing cross-coupling and EMF artifacts

Shield bonding topology via blue wire reduces ground loop-induced errors in differential temperature environments

Spring-loaded connectors ensure consistent contact pressure and reproducible termination contact resistance

Typical Applications Low thermal EMF lead sets address precision calibration workflows requiring sub-microvolt measurement stability, particularly in temperature coefficient validation, RTD/thermocouple simulator verification, and millivolt-level DC source calibration where lead thermal gradients would otherwise dominate measurement uncertainty.

Compatibility & Integration Designed exclusively as an accessory for Fluke 5440 Series calibrators. The three-conductor architecture and 4 mm connector footprint integrate directly with 5440 series input terminals without adapter hardware.