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Fluke Calibration 5628-15-B Secondary Standard PRT Probe

Fluke Calibration · Model: 5628-15-B Made to order
Fluke Calibration 5628-15-B Secondary Standard PRT Probe
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Fluke Calibration 5628-15-B is a secondary standard PRT probe, 0.25" × 15" with 25.5Ω resistance, -200°C to 661°C range, Inconel 600 sheath, 5-pin DIN termination.

Model 5628-15-B
Manufacturer Fluke Calibration
Category Test Leads & Probes
Availability Made to order

Overview

The Fluke Calibration 5628-15-B is a secondary standard PRT probe designed for precision temperature measurement from -200°C to 661°C. Featuring a 0.25-inch diameter Inconel 600 sheath with 15-inch overall length, this probe delivers excellent durability and thermal response for high-temperature calibration applications. The 4-wire configuration with 5-pin DIN termination ensures compatibility with standard calibration instruments.

Key Features

  • Temperature range: -200°C to 661°C with <0.03°C/500 hours drift at 661°C
  • Nominal resistance: 25.5Ω (±0.5Ω) with W(Ga) ≥ 1.11807
  • Calibration uncertainty: ±0.006°C at -200°C, ±0.004°C at 0°C, ±0.009°C at 420°C, ±0.014°C at 661°C
  • Stability: ±0.003°C
  • Sheath material: Inconel 600 for superior high-temperature durability
  • Lead wires: 4-wire Super-Flex PVC, 22 AWG
  • Termination: 5-pin DIN connector for 1502A compatibility
  • Physical dimensions: 0.25" diameter × 15" length
  • Recommended immersion depth: at least 12.7 cm (5 in)

Applications

  • Precision temperature calibration in laboratory and industrial settings
  • High-temperature furnace and block calibrator applications
  • Reference standard for calibration of thermometers and temperature instruments
  • On-site and portable calibration work
Resistance (RTPW) 25.5 Ω (±0.5 Ω)
Temperature Range -200°C to 661°C
Operating Temperature (Handle) 0°C to 80°C
Size (Diameter × Length) 0.25" × 15"
Immersion Depth At least 12.7 cm (5 in)
Sheath Material Inconel 600
Lead Wires 4-wire Super-Flex PVC, 22 AWG
Termination 5-pin DIN
Stability ±0.003°C
Long-Term Drift < 0.03°C/500 hours at 661°C
Fluke Calibration 5628-15-B Secondary Standard PRT Probe

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Fluke Calibration 5628-15-B Secondary Standard PRT Probe

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