HIGH TEMPERATURE THERMOCOUPLE PROBES - A12D Series Bookmark this page!
With Tungsten Coated Refractory Sheath and Standard Connector Attached

Tungsten Coated Sheath with # 24 - Heavy Gage Element

 

Oftentimes a molybdenum sheathed Thermocouple is used in a furnace with graphite liners or heating elements. At temperatures above 1600 deg. C, any graphite present emits dust molecules which attack the sheath and rapidly carburizes the sheath. This causes the sheath to become crystallized and porous. The thermal elements lose their protection and they also become crystallized and then break during cycling. Coating the protecting sheath with a thick layer of tungsten minimizes this carburization process and extends the life of the probes significantly. Field tests at 2000 deg. C using the coated probes produced continuous temperature data up to 2 months, even during cycling, whereas the uncoated probes failed within hours of reaching temperature. Longer life times were also experienced at temperatures below 2000 deg. C

SPECIAL NOTES:
•All of the above Thermocouples use #24 gage (0.020") size elements and molybdenum sheaths.
• Click here for adjustable compression fittings and mounting bushings.
• Duplex and multiple units also available - contact factory.
• When ordering, specify Part No. and Length (L). Example: A12D-1-18

QUANTITY DISCOUNTS:	1-10, None
	11-20, Less 5%
	21-50, Less 10%
	51 and over, upon request