TCBR-2 computer-controlled non combustible test furnace

summary

The non combustible test furnace for building materials is developed according to the main technical conditions specified in GB/T5464 and ISO1182:1990 "Non combustible Test Methods for Building Materials". Suitable for evaluating the non flammability of materials under laboratory conditions.

This instrument adopts computer control and has the advantages of automatic logging of test data, high testing accuracy, and reliable test results.

Temperature control of the instrument: During the heating process, when the furnace temperature reaches 750 ℃± 5 ℃ for a stable time of more than 10 minutes, the bottom left corner of the computer prompts "Test can be conducted". At this time, the electrical power (voltage x current) input to the test furnace is recognized by the computer as an unchangeable power. In order to ensure the consistency of the test environment, it is required that the input power of the test furnace cannot change (i.e. voltage x current=constant). In order to meet this requirement, compensation technology has been adopted in control technology. If the voltage of the power grid fluctuates, the computer automatically controls the output current to make the total power constant (unit time). That is to say, during the experiment, the power remained constant.

During the experiment, the placement of the sample and the amount of heat released by the sample cause changes in the furnace temperature. We do not impose any restrictions and only record temperature measurements.

 

 

Main technical parameters

 

Temperature control accuracy ≤ ± 5 ℃

Experimental furnace power ≤ 2500W

Working voltage 220V ± 10%, 50Hz

Operating Environment -5 ℃ -40 ℃

Display and record the temperature inside the furnace, at the center of the sample, and on the sample surface during the characteristic test