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Experience excellent response time and precise measurements with Fluke Calibration’s 5608 Secondary PRT probe. The 5608’s one-eighth inch (3.18 mm) diameter facilitates exact measurements over the full temperature range of -200°C to 500°C with just 80 mm (3.1 inch) of immersion. Crafted with an Inconel™ sheath and available in lengths of 9 or 12 inches, Fluke Calibration’s 5608 PRT is the model of accuracy and stability. As standard, each probe includes its resistance value at the triple point of water. If calibration is desired please call to discuss.
Temperature range | –200 °C to 500 °C |
Nominal resistance at 0.01 °C | 100 Ω ± 0.5 Ω |
Temperature coefficient | 0.0039250 Ω/Ω/°C |
Relative Accuracy | ± 0.007 °C at –200 °C |
Short-term repeatability | ± 0.007 °C at 0.010 °C |
Drift | ± 0.01 °C at 0.010 °C |
Hysteresis | ± 0.01 °C maximum |
Sensor length | 30 mm ± 5 mm (1.2 in ± 0.2 in) |
Sensor location | 3 mm ± 1 mm from tip (0.1 in ± 0.1 in) |
Sheath material | Inconel™ 600 |
Minimum insulation resistance | 500 MΩ at 23 °C, 20 MΩ at 500 °C |
Transition junction temperature range | –50 ºC to 200 °C |
Transition junction dimensions | 71 mm x 12.5 mm (2.8 in x 0.49 in) |
Minimum immersion length | 80 mm (3.1 in) |
Maximum immersion length | 305 mm (12 in) |
Response time[5] | 9 seconds typical |
Self heating (in 0 °C bath) | 75 mW/°C |
Lead-wire cable type | PTFE 24 AWG |
Lead-wire length | 1.8 m (6 ft) |
Lead-wire temperature range | –50 °C to 250 °C |
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