High Temperature Multi-Point Thermocouple

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For temperature range of above 1200℃ up to 1450℃, where metal sheathed compacted MgO type thermocouple can no longer be used as well as any of superalloys, Platinum-Rhodium group thermocouples of Types S, R and B are used with high purity Quartz protection tubes and Alumina insulators. At present major applications of such a High Temperature Multi-point Thermocouple seems to be concentrated for use on measurement of temperature profile in a diffusion furnace of semi-conductor industry. Due to limitation of the furnace inlet, 2〜5 points assembly is prevailed. For special applications, Silicon Carbide outer protection tube can be used. Please consult our sales for technical assistance.

Standard Designs of High Temp. Multi-Point Thermocouple :

Straight Quartz or Alumina Tube protected Type

Protection Tubes	High Purity Quartz, Alumina and Special SiC tube
Thermocouple	Type R, S and B
Measuring points	2〜5 max.
Measuring range	Type R and S 1200℃ (Quartz Tube), Type B 1600℃ (Alumina Tube)
Length of Assembly	1〜2 meters
Overall Dia. of Assembly	12〜25 mm.
Accuracy	Standard Grade ±0.25% of Reading. Premium Grade ±0.1% of Reading (Type R only) *SiC tube is optional, but sometimes needs to protect thermocouple wires from contamination by inner protective coating or clean Alumina inner tube, etc.

Bent protection Tube Type

Specifications are same as above, but the cold end of the protection tube is bent approx. 90 Deg. to fit for limited installation space.

STANDARD MODELS OF BEADED TYPE THERMOCOUPLE
(MODEL : TE)
For economy and quicker delivery, 16 popular models were selected in five STANDARD LENGTH of 500, 800, 1000, 1200, 1500 mm hrough numerous proof in design and installations. It is recommended that the customer specify the probe length longer than actually needed among the above standard length, so that error by heat conductivity
is eliminated and the insertion depth can be adjusted as required.