Fluke 5698-25 Working Standard SPRT

Manufacturer: Fluke Calibration
Model: 5698-25

Features

  • Conforms to ITS-90 SPRT guidelines
  • Drift rate typically 0.003 °C
  • Calibration options by fixed point
  • Unmatched performance-to-price-ratio

Specifications

Specification Details
Temperature Range –200 °C to 670 °C
Nominal RTPW 25.5 Ω (± 0.5 Ω)
Current 1.0 mA
Resistance Ratios W(234.315 K) ≤ 0.844235
W(302.9146 K) ≥ 1.11807
Sensitivity 0.1 Ω/°C
Drift Rate < 0.006 °C/100 hours at max temperature (typically < 0.003 °C)
Self-heating at TPW < 0.002 °C under 1 mA current
Reproducibility ± 0.0015 °C or better
RTPW Drift After Thermal Cycling < 0.001 °C
Diameter of Pt Sensor Wire 0.07 mm (0.003 in)
Protective Sheath Quartz Glass
Diameter: 7 mm (0.28 in)
Length: 485 mm (19.1 in)

 

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