Fluke Calibration 5665-B Probe
The Fluke Calibration 5665-B Probe is a high-precision temperature sensor designed for demanding calibration and measurement applications. With short-term accuracy to ±0.01 °C and one-year drift of ±0.01 °C, this probe ensures reliable and repeatable temperature readings over time. Optional accredited calibration is available to meet rigorous quality standards.
Key Features & Highlights
- Short-term accuracy to ±0.01 °C for precise measurements
- One-year drift of ±0.01 °C for long-term stability
- Flexible PTFE and silicone coated fast-response models for versatile use
- Rugged polished stainless steel sheaths for durability in industrial environments
- Optional accredited calibration for traceability and compliance
Applications
This probe is ideal for use in calibration laboratories, quality control, and industrial process monitoring where high accuracy and stability are critical. It is suitable for temperature validation, equipment calibration, and research applications.





Lisa Nguyen –
Our lab added the Fluke Calibration 5665-B Probe for Precision Temperature Measurement to a mobile test kit for on-site customer work. Repeatable results and straightforward operation throughout.
Sarah Mitchell –
IndoMultiMeter provided clear specs and responsive communication. The Fluke Calibration 5665-B Probe for Precision Temperature Measurement has met our accuracy expectations for daily calibration work.
Ahmad Fauzi –
The Fluke Calibration 5665-B Probe for Precision Temperature Measurement arrived on schedule and was packed securely for international shipping. Performance has been stable across multiple shifts and it fits well into our ISO traceability workflow.
Kevin Okafor –
We compared a few suppliers and chose this Fluke Calibration 5665-B Probe for Precision Temperature Measurement based on spec and lead time. No regrets — accurate, rugged, and fit for purpose.
Rizki Pratama –
Well suited for Southeast Asian humidity and workshop conditions. The Fluke Calibration 5665-B Probe for Precision Temperature Measurement has operated without drift issues so far.