Fluke Calibration

5699 High-Temperature Metal-Sheath Standard Platinum Res...

Affordable working standard SPRT with a range to aluminum point


$7,427.00 CAD
Normally ships in 1-2 Weeks

 
  Request Quote

Can We Help You?

CALL US   EMAIL US   CHAT LIVE

Our product experts are here to help you find the right solution for your application!

Designed and manufactured by our primary standards metrologists, the strain-free sensing element in the 5699 meets all ITS-90 requirements for SPRTs and minimizes long-term drift.

After one year of regular usage, drift is less than 0.008°C (< 0.003°C is typical). Even lower drift rates are possible depending on care and handling. A fifth wire for grounding is added to the four-wire sensor to help reduce electrical noise, particularly for AC measurements. Finally, you can get an improved version of an old industry-standard Inconel-sheathed SPRT.

The 5699 is constructed with a 0.219 in diameter Inconel sheath for high durability and fast response times. Inside the sheath, the sensing element is protected by a thin platinum housing that shields the sensor from contamination from free-floating metal ions found within metal environments at high temperatures. Reduced contamination means a low drift rate—even after hours of use in metal-block furnaces at high temperatures.

Affordable working standard SPRT

• Range to aluminum point (660°C )
• Inconel™ and platinum sheaths guard against contamination
• Less than 8 mK/year drift
• Many calibration options available including by fixed point
• Fifth wire provides shield ground

Temperature Range -200C - 670C
Nominal RTPW 25.5 Ω (+/- 0.5 Ω)
Current 1 mA
Resistance Ratio W (302.9146 K) ≥ 1.11807
W (234.3156 K) ≤ 0.844235
Sensitivity 0.1 Ω/C
Drift Rate < 0.008C/year
(< 0.003C/year typical)
Repeatability < 1 mK
Self-Heating at TPW < 0.001C under 1 mA current
Reproducibility +/- 0.001C or better
RTPW Drift After Thermal Cycling < 0.001C
Diameter of Pt Sensor Wire 0.07 mm (0.003 in)
Lead Wires Four sensor wires plus grounding wire
Protective Sheath Inconel
Diameter 5.56 mm +/- 0.13 mm (0.219 in +/- 0.005 in)
Length 482 mm (19 in)
Insulation Resistance > 100 MΩ at 661C
> 1000 MΩ at 20C