Fluke Calibration 5626-12-D Secondary PRT Probe

Overview

The Fluke Calibration 5626 is a secondary platinum resistance thermometer (PRT) designed for high-temperature calibration work up to 661°C. It features a nominally 100Ω probe with robust Inconel 600 sheath, protecting the platinum element from contamination while maintaining excellent measurement performance. The 5626 is ideal for block calibrators, furnaces, and temperature applications above typical PRT ranges, offering the durability and accuracy of a calibration standard at an affordable price point.

Key Features

• Temperature range: –200°C to 661°C with minimal long-term drift
• Nominal resistance: 100Ω (±1Ω)
• Calibration uncertainty: ±0.006°C at –200°C, ±0.004°C at 0°C, ±0.009°C at 420°C, ±0.014°C at 661°C (k=2)
• Stability: ±0.003°C with long-term drift <0.03°C/500 hours at 661°C
• Durable Inconel 600 sheath with 4-wire Super-Flex PVC lead wires
• 5-pin DIN termination for 1502A compatibility
• Includes accredited calibration with ITS-90 constants and resistance-versus-temperature table

Applications

• High-temperature calibration work in block calibrators and furnaces
• Temperature measurement and verification up to the aluminum point (661°C)
• Working or check standards for calibration services
• Applications requiring contamination-resistant secondary standards

Included Accessories

• Accredited calibration with ITS-90 constants and resistance-versus-temperature table