Fluke Calibration 5628-20-J

• Range to 660°C
• Meets all ITS-90 reMeets all ITS-90 requirements for resistance ratios
• Rtp drift &lt, 20mK after 500 hours at 660°C
• Strain-free sensor design by Harts SPRT engineers
• High-temp PRT, 25.5 Ohm, 305 mm (12 in)
• If youre using block calibrators, furnaces, or temperature points above normal PRT temperatures (420 °C), then these two PRTs are for you
• The 5626 is nominally 100 Ohm and the 5628 is nominally 25.5 Ohm
• Both instruments have a temperature range of -200 °C to 661 °C
• They make great working or check standards for calibration work up to the aluminum point
• Using a regular PRT at temperatures above 500°C exposes the platinum to contamination
• If the PRT is used as a reference or calibration standard, contamination is a major problem
• SPRTs, which are more expensive and delicate, can handle the higher temperatures, but with greater risk to the instrument due to shock, contamination, or mishandling
• The 5626 and 5628 are designed to reduce the contamination risk through the use of internal protection while not impairing performance

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Each Unit Includes

• Accredited Calibration
• Complete with ITS-90 constants and a resistance-versus-temperature table
• Spade Lugs