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.
Specifications
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 ± 0.008 °C at 0 °C ± 0.020 °C at 420 °C ± 0.027 °C at 660 °C
Short-term repeatability
± 0.007 °C at 0.010 °C ± 0.013 °C at max temp
Drift
± 0.01 °C at 0.010 °C ± 0.02 °C at max temp
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 (<5 mK error)
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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