Noble Metal Thermocouples | Process Controls, Power Controls, Indicators and Alarms, Chart Recorders, Actuators, Sensors, Support and Repair, Barcol-Impressors
Noble Metal Thermocouples for Industrial Applications
Noble Metal Industrial thermocouple assemblies (Type B, R, S, C, F) are designed to be used in the most severe and demanding environments. The choice of a specific style is to a large degree determined by the temperature working range, ambient atmospheric or media conditions, as well as the size and shape required for the application. Control requirements such as accuracy and speed of response may also be considerations.
The hight temperature elements consist of standardized and matched wires, individually checked. The positive lead of an insulated element is identified with a color glass bead.
Noble Straight Ceramic Tube Thermocouple
Elements are constructed of high quality material using modern techniques to construct the hot junction. Other high qulaity components are designed to meet rugged requirements. Mullite protection pipes are impervious to gases at high temperature. They have good resistance to thermal shock but poor resistance to mechanical shock; they should be mounted vertically.
Aluminum oxide protection tubes have fair resistance to thermal shock and mechanical shock. They are impervious to gases up to 3200°F.
Primary metal industry, heat treat furnaces, forging furnaces and bright annealing. Suitable for ceramics and glass industries. Semiconductor manufacturing and research laboratories.
Applications
Heat treating, forging, or annealing
Ceramics and glass industry
Semi-conductor manufacturing
Research laboratories
Features
Aluminum oxide tube impervious to gasses up to 3200°F
Options
Open or closed end
Twisted or butt welded junction
Mullite or aluminum oxide tube
Large selection of cold end termination
Noble Ceramic in Ceramic Dual Tube Thermocouple
This thermocouple is assembled with two tubes to assure element protection in the event one of the tubes cracks or breaks. Also, two tubes provide additional mechanical strength. Mullite protection tubes (Field 5, codes 23, 24) are impervious to gases at high temperature. They have good resistance to thermal shock but poor resistance to mechanical shock; they should be mounted vertically.
Aluminum oxide protection tubes have fair resistance to thermal shock and mechanical shock. They are impervious to gases up to 3200°F. Primary metal industry, heat treat furnaces, forging furnaces and bright annealing. Suitable for ceramics and glass industries. Salt baths in general, Barium Chloride slat baths up to 2350°F, and high speed salt baths. Semi-conductor manufacturing and research laboratories.
Applications
Heat treating, forging, or annealing
Ceramics and glass industry
Semi-conductor manufacturing
Research laboratories
Features
Aluminum oxide tube impervious to gasses up to 3200°F
Options
Mullite or aluminum oxide tube
Large selection of cold end termination
Noble Ceramic in Inconel Dual Tube Thermocouple
This thermocouple is assembled with two tubes to assure element protection in the event one of the tubes cracks or breaks. Also, two tubes provide additional mechanical strength. Mullite protection tubes (Field 5, codes 23, 24) are impervious to gases at high temperature. They have good resistance to thermal shock but poor resistance to mechanical shock; they should be mounted vertically.
Aluminum oxide protection tubes have fair resistance to thermal shock and mechanical shock. They are impervious to gases up to 3200°F. Primary metal industry, heat treat furnaces, forging furnaces and bright annealing. Suitable for ceramics and glass industries. Salt baths in general, Barium Chloride slat baths up to 2350°F, and high speed salt baths. Semi-conductor manufacturing and research laboratories.
Applications
Furnace, kilns, or where protection tube is subject to thermal or mechanical shock
Heat treating, carburizing, nitriding, salt baths, blast furnace operation, and gas generators
Features
Inconel 601 protection tube high resistance to thermal and mechanical shock; resists oxidation up to 2300°F and corrosion at high temperature
Options
Mullite or aluminum oxide tube
Large selection of cold end termination
Noble Dual or Triple Tube Thermocouple
The design of this assembly is for the maximum protection of the noble metal element. The primary protection tube (or tubes) protects the element from outside gases while the outer tube of silicon carbide protects the assembly against the cutting action of flames and hot gases. You can choose either high temperature Mullite or aluminum oxide for the primary tube material. High temperature Mullite is not recommended for temperatures above 1800°F.
Silicon carbide protection tubes have low lag time and long life; high resistance to many corrosive atmospheres and are highly resistant to attack by many molten nonferrous metals. For use with molten nonferrous metals, brick kilns, ceramic kilns and where the thermocouple is exposed to either flames or hot gases.
Applications
Molten non-ferrous metals
Brick kilns
Ceramic kilns
Incinerators
Wherever sensor is exposed to flames or hot gasses
Features
Silicon carbide protection tube has low lag time and long life
Options
Mullite or aluminum oxide primary tube
Mullite or aluminum oxide middle tube
Large selection of cold end termination
Noble Dual or Triple Tube Thermocouple
The elements consist of standardized and matched wires, individually checked. The hot junctions of noble metal elements are end contact welded. Cold ends are terminated with butt connectors.
Both bare elements and insulated elements are available. The positive lead of an insulated element is identified with a colored glass bead as follows: Type R - blue or black; type S - clear; type B - yellow; type F - yellow and blue or black; and, type C - green. Insulated elements are for use wiht general purpose or weatherproof heads.
Platinum and platinum alloy thermocouple wire is extremely susceptible to contamination form elements such as silicon, iron, zinc, calclium, etc. Keep platinum and platinum alloy thermocouple wire clean both before and during use. Contamination causes negative direction drift and weakening of the wire.
