Thursday, 6 November 2014

Make Sure You Get Quality Custom Thermocouples

By Christa Jarvis


When you want something to be specially made, you tend to be pretty exact. All custom thermocouples are made with the customer in mind. Many businesses are willing to speak to the client so that each thermocouple can be made for a specific application. Once the details are given they will then send a drawing before production is started.

They specialise in making rare metal thermocouples with ceramic Sheaths with a diameter of 0.5mm. The shank is made from plated MS, chrome iron, and stainless steel. The temperature range is from 0 to 1700 degrees Celsius. If special materials are needed one only has to ask and can have a pressure tight design.

The most basic or Base Metal ones are J, K, T and E and are the commonly used. The Noble Metals are R, S and B and are used in all high temperature applications. They can be found in all paper and pulp, pharmaceutical as well as power generated companies. In the modern home they are found in toasters, stoves and furnaces.

Each type has a protective sheath around them which helps protect them from the atmosphere. This greatly reduces erosion. The type K is the most common one as it is very reliable and not very expensive compared to some of them. It has a wide range when it comes to temperature and is very precise

Pyroprocessing is used to change materials with temperature of over 800 degrees Celsius to bring about a change in the physical and compound change. Different names for this process are known to be calcinations, sintering as well as ore-roasting. Other equipment besides the kilns is reverberatory and electric arc furnaces.

The thermocouples with pot seal and flexible tails have a temperature range from 200, to 1250 degrees Celsius and the type designation is MTP. The tail details are 10 mm tinned and the sheaths are from Inconel, 321 SS and Pyrosil. All the sensors can be bent to a specific shape and they have reduced tips as well.

The sheaths are all made from stainless steel as they are all lucrative and don't corrode very easily. The best one to use is the 316SS as the 304SS is not as resistant to corrosion as the other. The difference in price is not much so it is up to one's own discretion which would be the best to use.

The rare metal thermocouples contain both rhodium and platinum. Rhodium is a very rare, hard, silvery-white metal. It is actually a part of the platinum group and is composed on one isotope. This is one of the rarest precious metals and also one of the most costly. Platinum is a gray white metal that is very dense as well as compliant. Its name comes from the Spanish term platina and has always been sought after.




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