Question: The general mechanism of the operation of the fb1300 and fb1400 furnaces includes the placement of the material and object to be heated in the combustion chamber. The entire burning element which is some kind of resistive component through which the current passes is placed in an insulator material coating which is ceramic fiber because of their high thermal resistance and heat stability. The ceramic not only insulate the heating element but also provide the sole purpose of protection. The temperature to which the object or test element has to be heated is controlled with the help of the control knob present on the outside of the body and this is done manually by the user and precautions have to be taken to keep the temperature within the safe limits for the combustion to occur in contamination free environment without alteration in final results. For the monitoring of the furnace the display is present which gives the information about the temperature of the chamber to be viewed in the form of mathematical digits. The safety features in the fb1300 are added by the manufacturer in which the doors are connected by the power switches which require the power switches to cut down the main supply when the door has to be opened for the inserting and taking out the object to be heated.(Barnstead|Thermolyne, 1999).
Companies Making Furnaces
One of the most prominent organizations making the muffle furnaces is the brainsteadThermolyne Corporation. That has produced several type of instrument including the famous fb1300 and fb1400 series (Barnstead|Thermolyne, 1999). CM furnaces, is also a prominent manufacturer of these instruments.
Working Principle and Operation
There are three major parts of the Thermogravimetric analyzer TGA 51 and H-51 including the furnace and the pan for placement of the material and the balance on which the pan is placed, graph and plotting devices is also accompanied. The object that is to be investigated for its reaction to the applied heat is placed in the pan and then the temperature is changed as required or desired by the researcher. As the pan is heated the object changes its physical and chemical properties and then the changes in its mass are then measured by the balance to a very high precision revealing the results about the decomposition and degradation of that substance. The furnace chamber in which the heating occurs is filled with the gas which can be reaction like hydrogen and the inert gases are also used for the heating to maintain the required or suitable environment in the entire process and then the gases are then exhausted from the outlet. The graph is then formed that indicates the changes in the mass in the form of drop in the line that is clearly observed (PerkinElmer Inc., 2015).