Ceramic jacket protects thermocouple in high-temp applications

CaO-stabilized zirconia tube from Morgan Technical Ceramics can operate in furnace environments up to 2,000 °C, outlasting alumina alternatives.

02/15/2011


Morgan Technical Ceramics (MTC), a manufacturer of ceramic, glass, precious metal, piezoelectric, and dielectric materials, has introduced a new thermocouple protection tube material made from CaO-stabilized zirconia. This material withstands a furnace’s maximum working temperature up to 2,000 °C.

The new zirconia thermocouple protection tubes offer corrosion and chemical resistance at higher temperatures than can be achieved with alumina tubes. Processes that use inert atmosphere and graphite can result in reduced oxygen in the alumina tubes, causing their early failure. The oxygen molecules in the zirconia will also be reduced in this environment, but at a much slower rate.

The material can be used in directional solidification system (DSS) furnaces, where temperatures are about 1,600 °C and the thermocouple tubes are sitting in a graphite bed. Alumina remains an appropriate material for use in other positions in the kiln, but zirconia thermocouples will have a longer life.

MTC offers a wide range of materials that can be used in temperature measurement, providing a solution for nearly every application. These include zirconia, mullite, alumina, and silicon carbide.

www.morgantechnicalceramics.com

Peter Welander, pwelander@cfemedia.com

Visit the Control Engineering Process Control Channel.



No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
System integration: Best practices and technologies to help; Virtualization virtues; Cyber security advice; Motor system efficiency, savings; Product exclusives; Road to Hannover
Collaborative robotics: How to improve safety, return on investment; Industrial Internet of Things, Industrie 4.0: World views; High-performance HMI, Information Integration: OPC and OMG
9 tips: How to integrate a servo system; Process control mathematical models; Serial network grounding; Engineers' Choice Awards; Learn from cyber security mistakes
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
PLCs, robots, and the quest for a single controller; how OEE is key to automation solutions.
Learn how Industry 4.0 adds supply chain efficiency, optimizes pricing, improves quality, and more.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Getting to the bottom of subsea repairs: Older pipelines need more attention, and operators need a repair strategy; OTC preview; Offshore production difficult - and crucial
Digital oilfields: Integrated HMI/SCADA systems enable smarter data acquisition; Real-world impact of simulation; Electric actuator technology prospers in production fields
Special report: U.S. natural gas; LNG transport technologies evolve to meet market demand; Understanding new methane regulations; Predictive maintenance for gas pipeline compressors

(copy 5)

click me