5609 Secondary Reference Platinum Reference Thermometers

Stable and reliable dry-well reference probe from -200°C - 670°C

Starting at

$2,464.00CAD

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5609 Secondary Reference Platinum Reference Thermometers 01327

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.

• 5608: –200°C - 500°C (80 mm minimum immersion)
• 5609: –200°C - 670°C (100 mm minimum immersion)
• Dry-well reference with 90° bend

Lead-Wire Cable Type	PTFE 24 AWG
Lead-Wire Length	1.8 m (6 ft)
Lead-Wire Temperature Range	–50°C - 250°C
Calibration	Calibration not included
^[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, 95 % confidence (k=2)
^[3]After 100 hours at max temp, 95 % confidence (k=2)
^[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
Temperature Range	5608: –200°C - 500°C 5609: –200°C - 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]	–50ºC - 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

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Manual - 5609 Secondary Reference Platinum Reference Thermometers
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Data Sheet - 5609 Secondary Reference Platinum Reference Thermometers
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