Industrial Automation Magazine India

Thermocouples & RTD Cables

Published on : Tuesday 30-11--0001

The Show Preview presents glimpses of the automation products, devices, software and technologies that would be on display at the Automation Expo 2018 (August 29-September 01, 2018 – BCEC, Goregaon, Mumbai).

Thermal Instruments India Pvt Ltd offers Mineral Insulated Thermocouple and RTD Cables, which are basic raw materials for manufacturing thermocouples and RTDs). The manufacturing is a very specialised process which has been perfected over the years. The process involves cold drawing followed by annealing in hydrogen atmosphere (to avoid surface defects as well as partial oxidation of conductor) at specified temperature (which depends upon conductor and sheath material). This process is repeated till required diameter is achieved. Original virgin conductor is used for this purpose along with over 99% pure magnesium oxide (mineral insulation) in order to have desired results.

Accurate temperature monitoring and control begins with a properly designed sensor. RTD – Resistance Temperature Detector – used for temperature measurement (-)200°C to 500°C (up to 800°C on request), must have the physical configuration necessary for optimum thermal response to the process fluid it is sensing and the resistive element compatible with instrumentation. The system accuracy begins with proper primary sensor selection. The integrity of any temperature measuring device depends upon proper traceability.

Mineral Insulated Thermocouple assemblies consist of two, four or six thermocouple wires embedded in compact MgO – mineral insulation, enclosed in a metallic tube. The assembly is compact, flexible enough to route, has a high insulation resistance and high thermal conductivity. Mineral insulated thermocouple assemblies are robust in construction and offer good mechanical strength.

Thermowells are provided to protect the basic sensor from mechanical damage and corrosion. An extremely sturdy design may increase the life of the sensor but may lead to a poor response. Similarly, a delicate design will have poor life but will improve the response time. Therefore, a proper balance needs to be struck

Pressure Gauges intended for process industries such as chemicals, petro-chemicals, energy or gas industry, food processing, nuclear, etc. These pressure gauges have been designed to satisfy requirements to operate in aggressive environment.

Temperature Gauges: The bimetal thermometer employs a bimetal strip in the form of helix (it works on the principle of thermal expansion – two metals having different coefficient of expansions are joined to form a bimetal. The resultant expansion of bimetal is proportional to temperature). Bimetal dial thermometers are simple in construction, yet rugged. They are used for measurement of temperature in most of the industrial applications. They are offered in the range of (-)50°C to 600°C. With rigid stem having bottom or back entry. It can also be offered in every angle rotatable construction.

Flow Nozzle is used in typically high-velocity, non viscous, erosive flow. They are suitable for determining the flow rates of fluids at high temperature and high pressure. Flow nozzles are erosion-resistant, consistently accurate and virtually maintenance-free. They perform a wide variety of applications that include water, steam and high temperature applications. The rounded design provides a more effective sweep-through of particles in the flow stream, which extends product life by reducing wear and potential damage.

Thermal Instruments India Pvt Ltd. Hall 1, Booth C7, Automation Expo 2018

Tel: 022-24454387. Email: [email protected]

Automation Expo 2018: http://ied.fingoh.com/