Standard
platinum
resistance
thermometers
(SPRTs)
5681, 5683, 5684, and
5685 Quartz-Sheath SPRTs
The performance you expect from
world-class SPRTs.
• Drift rates as low as 0.0005 K
• Proprietary gas mixtures
ensures high stability
• Most experienced SPRT design
team in the business
5698-25 Working Standard
SPRT
High performance-to-price ratio.
• Conforms to ITS-90 SPRT
Guidelines
• Drift rate typically 0.003 °C
• Calibration options by fixed
point
5686-B Glass Capsule SPRT
Designed for metrology work
requiring small SPRTs.
• Temperatures from -260 °C
(13 K) to 232 °C
• Stability typically 0.001 °C
over 100 °C range
• Miniature capsule package
eliminates stem conduction
5699 High-Temperature
Metal-Sheath SPRT
Affordable working standard
SPRT.
• Range to aluminum point
(660 °C)
• Inconel™ sheaths guard
against contamination of
sensor
• Drift rates less than 8 mK/year
ITS-90 fixed-
point cells
5901 Triple Point of Water
Cells
Must-have, primary temperature
standards.
• Easy-to-use, inexpensive
standard with uncertainty
better than ± 0.0001 °C
• Four sizes and two shells
(glass and quartz) to
choose from
• Isotopic composition of Vienna
Standard Mean Ocean Water
ITS-90 Fixed-Point Cells
Best cell uncertainties
commercially available.
• Every ITS-90 fixed point
available from mercury to
copper
• Plateaus last days (gallium for
weeks and TPW for months)
• Manufactured and tested by
Fluke Calibration’s primary
standards scientists
Mini Fixed-Point Cells
Least expensive, easiest-to-use
fixed-point standards.
• Lower uncertainties than
comparison calibrations
• All ITS-90 fixed points from
TPW to copper
• Reduced equipment and
annual recalibration costs
5681, 5683, 5684, and 5685
5686-B
5698-25
5699
5901
Mini Fixed-Point Cells
ITS-90
18
www.flukecal.comTemperature calibration
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