Skip to main content
Press Enter
Buy now! $7,798.00CAD
Fluke Calibration

5686-B Glass Capsule Standard Platinum Resistance Thermometer

Designed for metrology work requiring small SPRTs

Buy now!
$7,798.00CAD
Have questions? We're here to help!
Have questions? We're here to help!
he 5686 complies completely with ITS-90 and has the following resistance ratios:
 
W(302.9146 K) ≥ 1.11807
and
W(234.3156 K) ≤ 0.844235
 
The 5686 covers temperatures from –260 °C to 232 °C, so it’s perfect for cryogenic applications. It is 5.8 mm in diameter and 56 mm long. Fixed-point calibrations are available for the model 5686 from –200 °C to 232 °C.
 
These SPRTs are small but meet customary SPRT performance for reproducibility, reliability, and stability. They solve many of the problems associated with taking precision measurements in situations unsuitable for traditional-length SPRTs.

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

Temperature Range–260 °C - 232 °C (13 K - 505 K)
Nominal RTPW25.5 Ω
Resistance RatioW(302.9146 K) ≥ 1.11807
W(234.3156 K) ≤ 0.844235
Drift Rate5686: < 0.005 °C per year over the entire range
Self-Heating at TPW< 0.002 °C under 1 mA current
Reproducibility+/- 0.001 °C or better
R TPW Drift After Thermal Cycling< 0.001 °C
Filling GasHelium
Lead WiresFour platinum wires, 30 mm long (1.18 in)
Size 5.8 mm dia. x 56 mm long (0.23 in x 2.2 in)
  • Thumbnail of document Manual - 5686-B Glass Capsule Standard Platinum Resistance Thermometer
    Download

    Manual - 5686-B Glass Capsule Standard Platinum Resistance Thermometer

    Download

Request a Calibration Quote

We’re here to make calibration easy. Request a quote today and let our team give you the care, precision, and service you can trust.
Learn more

Browse By Brands

Uncover the brands that set the standard for quality and dependability in every industry we serve.
Learn more