Fluke Calibration 5609-12-J

Fluke 5609-12-J Secondary Standard PRT, 12-Inch x 1/4-Inch, Banana Plug Termination.

The Fluke 5609-12-J Secondary Standard PRT is a high-accuracy platinum resistance thermometer designed for demanding industrial and metrology-grade applications. Built with a 100-ohm sensor and rugged Inconel™ 600 sheath, this 12-inch probe ensures long-term stability and precise temperature measurement from -200 °C to 670 °C, making it an ideal choice for dry-well calibrators and metrology labs.

Its high repeatability, low drift, and defined sensor location make it suitable for traceable calibration and temperature verification. Terminated with banana plugs, it integrates easily with a wide range of Fluke dry-wells and readout instruments.

Key Features:

• Measurement Range: –200 °C to 670 °C

• Nominal Resistance at 0.01 °C: 100 Ω ± 0.5 Ω

• Temperature Coefficient: 0.0039250 Ω/Ω/°C

• Short-term Repeatability: ±0.01 °C at 0.010 °C

• Maximum Drift: ±0.02 °C at 670 °C

• Hysteresis: ±0.01 °C

• Immersion Performance: <5 mK error at 100 mm minimum immersion

• Response Time: ~12 seconds typical

• Self Heating: 50 mW/°C in 0 °C bath

• Insulation Resistance: ≥500 MΩ at 23 °C; ≥10 MΩ at 670 °C

• Probe Length: 12 inches (305 mm)

• Sheath Diameter: 1/4 inch

• Lead Length: 72 inches

• Termination: Banana plugs

Construction & Materials:

• Sheath Material: Inconel™ 600 – corrosion-resistant and high-temperature capable

• Insulation Material: Teflon

• Sensor Length: 30 mm ± 5 mm

• Sensor Location: 3 mm ± 1 mm from tip

• Transition Junction: 71 mm x 12.5 mm (2.8 in x 0.49 in)

• Lead-Wire Temp Range: -50 °C to 250 °C

What’s Included:

• Fluke 5609-12-J PRT Probe

• Manufacturer documentation

• 1-Year Warranty

Note: Calibration certificate is not included and must be ordered separately if required.

Technical Specifications Table:

Applications:

• Reference thermometer in calibration labs

• Field temperature verification with dry-well calibrators

• Industrial temperature mapping and validation

• Secondary standard reference for ISO/IEC 17025 traceable labs

🔗 Browse more in our Probes and Sensors category
📘 Related reading: How to Source Certified Test and Measurement Equipment for International Projects