Made from the finest platinum and platinum-rhodium alloy, the Type R and Type S Thermocouples cover a temperature range of 0 °C to 1450 °C with uncertainties as good as 0.15 °C over most of that range. With four different models for each type, we have the thermocouple to fit your application.
The measuring junction of both the 5649 and the 5650 is encased in a 0.25-inch (6.35 mm) alumina sheath that can be ordered in lengths of 20 or 25 inches (50.8 or 63.5 cm) to fit the specific requirements of your application. A reference, or “cold,” junction may also be ordered. The reference junction uses a stainless steel sheath and is 8.25 inches long (21 cm) by 0.188 inches in diameter (4.8 mm). The thin diameter minimizes the immersion depth needed, but the extra length ensures you can get all the immersion you like.
Special tin-plated, solid-copper connecting wires with ultra-low EMF properties are used to help retain the integrity of your measurement junction where the probe attaches to your micro voltmeter or Hart Black Stack.
Each probe comes from a spool of wire that has been certified for use with ASTM E-230-03 special tolerances (the greater of ±0.6 °C or ±0.1% of reading over the range 0 °C to 1450 °C). If you need greater accuracy, order an individual fixed-point calibration to reduce uncertainties to ±0.15 °C up to 962 °C, increasing linearly to ±2.0 °C at 1450 °C.
The probe assembly can be easily disassembled for performing your own bare-wire calibrations.
0 °C to 1450 °C
Platinum/13 %Rhodium vs. platinum (type R)
Wire is certified for use with ASTM E-230-03 special tolerances (the greater of ±0.6°C or ±0.1% of reading over the range 0°C to 1450°C). An optional fixed-point calibration is available.
Fixed-point Calibration Uncertainty (k=2)
±0.15°C up to 962 °C, increasing linearly to ±2.0°C at 1450°C
Hot Junction Sheath Dimensions
6.35 mm (0.25 in) diameter; see Ordering Information for lengths
Reference Junction Sheath Dimensions
4.8 mm dia. x 210 mm long
±0.5 °C to 1100 °C
±0.2 °C to 1100 °C
At least 152 mm (6 in) recommended
Model 2609 case included
1 kg (2 lb.)
|†Does not include short-term stability or long-term stability|
Type R TC, 508 mm (20 in)
Type R TC, 508 mm (20 in), with reference junction
Type R TC, 635 mm (25 in)
Type R TC, 635 mm (25 in), with reference junction
Type S TC, 508 mm (20 in)
Type S TC, 508 mm (20 in), with reference junction
Type S TC, 635 mm (25 in)
Type S TC, 635 mm (25 in), with reference junction
X = termination. Specify “B” (bare wire), “W” (generic copper-to-copper TC connector), or “R” (standard Type R/S TC connector). Models with reference junctions should not specify “R” and models without reference junctions should not specify “W”.
Four-point calibration by fixed point (Sn, Zn, AI, Ag).
Spare Case (for 635 mm [25 in] long TC)
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