Secondary PRT with Calibration Options - 5608 and 5609
Key features
- 5608: –200 °C to 500 °C (80 mm minimum immersion)
- 5609: –200 °C to 670 °C (100 mm minimum immersion)
- ± 0.01 short-term stability
- Calibration not included, NVLAP-accredited calibration optional, lab code 200348-0
- Dry-well reference with 90 ° bend
Product overview: Secondary PRT with Calibration Options - 5608 and 5609
The 5608 comes with a one-eighth inch (3.18 mm) diameter sheath in lengths of 9 inches or 12 inches. The 5609 comes with a one-quarter inch (6.35 mm) diameter sheath in lengths of 12 inches, 15 inches, and 20 inches; or with a 6 mm diameter in lengths of 300 mm, 400 mm, or 500 mm.
When looking for improved response time and reduced stem effect in shallow immersion, look for small diameter probes, because the measurement error called stem effect is caused by the diameter of the stem rather than the length of the stem.
Both of these probes have Inconel™ sheaths and are made using a special manufacturing process, giving them great precision over a wide temperature range. The sensors for these probes are reference-grade platinum and feature four-wire connections with less noisy measurements than two-wire counterparts.
As standard, each probe includes its resistance value at the triple point of water. If calibration is desired, you can order a NVLAP-accredited calibration from our laboratory; lab code 200348-0. On the report of calibration, you’ll get the test data and the ITS90 calibration coefficients that you can easily input into any Fluke Calibration thermometer. If you order your probe with an smart connector, we’ll program the coefficients directly into your connector, which loads the coefficients for you when you plug it into our 1524 Handheld Thermometer.
Specifications: Secondary PRT with Calibration Options - 5608 and 5609
Specifications | |||||||||||||||||||||||
Temperature range | 5608: –200 °C to 500 °C 5609: –200 °C to 670 °C | ||||||||||||||||||||||
Nominal resistance at 0.01 °C | 100 Ω ± 0.5 Ω | ||||||||||||||||||||||
Temperature coefficient | 0.0039250 Ω/Ω/°C | ||||||||||||||||||||||
Relative Accuracy[1] | ± 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[2] | ± 0.007 °C at 0.010 °C ± 0.013 °C at max temp | ||||||||||||||||||||||
Drift[3] | ± 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 | 5608: 500 MΩ at 23 °C, 20 MΩ at 500 °C 5609: 500 MΩ at 23 °C, 10 MΩ at 670 °C | ||||||||||||||||||||||
Transition junction temperature range[4] | –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] (<5 mK error) | 5608: 80 mm (3.1 in) 5609: 100 mm (3.9 in) | ||||||||||||||||||||||
Maximum immersion length | 305 mm (12 in) | ||||||||||||||||||||||
Response time[5] | 5608: 9 seconds typical 5609: 12 seconds typical | ||||||||||||||||||||||
Self heating (in 0 °C bath) | 5608: 75 mW/°C 5609: 50 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 | ||||||||||||||||||||||
Calibration | |||||||||||||||||||||||
[1] Includes short-term repeatability and 100 hr drift. Calibration will add additional uncertainties. [2] Three thermal cycles from min to max temp, includes hysteresis, 99.9 % confidence (k=3) [3]After 100 hours at max temp, 99.9 % confidence (k=3) [4] Temperatures outside this range will cause irreparable damage. For best performance, transition junction should not be too hot to touch. [5] Per ASTM E 644 |
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