The Fluke 5618B-6-D Secondary PRT Probe is a high-accuracy platinum resistance thermometer (PRT) built for precise temperature measurement in laboratories and industrial calibration settings. Its 6″ length and 1/8″ diameter make it ideal for standard calibration wells, delivering consistent and reliable readings. Constructed from durable and chemically resistant materials, this probe is designed for long-term use in demanding environments, making it an essential tool for accurate temperature calibration and high-precision measurements.
Key Features:
-
Platinum resistance sensor for precise and accurate temperature measurement
-
6″ length x 1/8″ diameter for standard calibration well compatibility
-
Wide operating temperature range: -200°C to 420°C
-
Durable, chemically resistant construction for extended use
-
Fast response time for efficient calibration
Compatible Chemicals:
Safe for use with standard calibration oils and inert laboratory fluids.
Included Accessories:
Probe only; compatible with Fluke Calibration reference instruments and calibration baths.
Compliance:
Manufactured to ISO 17025 standards, ensuring laboratory-grade accuracy and quality assurance.
Benefits for Lab Users:
The Fluke 5618B-6-D provides reliable, repeatable temperature readings, reducing calibration errors and improving workflow efficiency. Its compact and robust design makes it ideal for research labs, industrial metrology, and any professional environment requiring trusted temperature calibration solutions.





