• 5686-B Glass Capsule SPRT

  • Đăng ngày 05-07-2017 10:30:05 AM - 89 Lượt xem
  • Giá bán: Liên hệ

  • 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


Số lượng

The 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.

Specifications
Temperature Range 5686: –260 °C to 232 °C (13 K to 505 K)
Nominal RTPW 25.5 Ω
Resistance Ratio W(302.9146 K) ≥ 1.11807
W(234.3156 K) ≤ 0.844235
Drift Rate 5686: < 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 Gas 5686: helium
Lead Wires Four platinum wires, 30 mm long (1.18 in)
Size 5686: 5.8 mm dia. x 56 mm long (0.23 x 2.2 in)

 

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