Fluke Calibration

5626 / 5628 Secondary Standard and High-Temp Platinum Re...

High-temperature secondary standards fill the gap between afforadable but temperature-limited PRTs and highly accurate SPRTs

Starting At
$3,045.00 CAD
Normally ships in 1-2 Weeks

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Fluke Calibration's high-temp secondary standards fill the gap between affordable, but temperature-limited secondary PRTs (platinum resistance thermometers) and more expensive, highly accurate SPRTs (standard platinum resistance thermometers).

If you’re using block calibrators, furnaces, or temperature points above normal PRT (platinum resistance thermometer) temperatures (420°C), then this PRT is for you. The 5626 is nominally 100 Ω. The instrument has a temperature range of -200°C - 661°C. They make great working or check standards for calibration work up to the aluminum point.

Using a regular PRT at temperatures above 500°C exposes the platinum to contamination. If the PRT is used as a reference or calibration standard, contamination is a major problem. SPRTs (standard platinum resistance thermometers), which are more expensive and delicate, can handle the higher temperatures, but with greater risk to the instrument due to shock, contamination, or mishandling. The 5626 is designed to reduce the contamination risk through the use of internal protection while not impairing performance.

In addition to the right measurement performance and durability, a PRT for secondary applications should be priced affordably. Fluke Calibration’s new PRTs are inexpensive and come with an accredited calibration. The calibration comes complete with ITS-90 constants and a resistance-versus-temperature table.

• Range to 661°C
• Meets all ITS-90 requirements for resistance ratios
• Rtp drift < 20 mK after 500 hours at 661°C
• Calibrated accuracy of +/- 0.006°C at 0°C

Temperature Range -200C - 661C
Handle Temperature 0C - 80C
RTPW 5626: 100 Ω (+/- 1 Ω)
5628: 25.5 Ω (+/- 0.5 Ω)
W(Ga) 31.11807
Calibrated Accuracy (k = 2) +/- 0.006C at -200C
+/- 0.006C at 0C
+/- 0.015C at 420C
+/- 0.022C at 661C
Stability 5626: +/- 0.003C
5628: +/- 0.002C
Long-Term Drift (k = 2) 5626: < 0.006C/100 h at 661C
5628: < 0.004C/100 h at 661C
Immersion At least 12.7 cm (5 in) recommended
Sheath Inconel 600
Lead Wires 4-wire Super-Flex PVC, 22 AGW
Termination Gold-plated spade lugs, or specify
Size 6.35 mm dia. x 305 mm, 381 mm, or 508 mm (0.25 in x 12 in / 15 in / 20 in) standard
Calibration Accredited calibrations from Fluke Calibration
Includes calibration and 100 h drift
Plastic probe carrying case for probes 635 mm (25 in) in length
Normally ships in 1-2 Weeks
$301.00 CAD