What is the dilatometer?

dilatometer is a scientific device used to measure volume changes that occur in liquids or solids. Types of volume changes that are usually measured by dilatometry include volume changes due to temperature fluctuations, chemical reactions, fluid absorption or physical stress, such as the firm pressure. Many dilatometers are very complex scientific instruments, but there are also some simple types of dilatometers. One example of a simple device is thermometer of mercury. When Mercury is heated, it expands, and this increase in volume is measured by a scale on the mercury thermometer. Flat plate dilatometers, also sometimes called capacitive dilatometers, are characterized by two boards, one of which is stationary and the other that can move. This type of tool is often USED to measure changes in solid materials. A long thin piece of measured material is inserted into the device. For example, when expanding, if the temperature is raised, the expansion pushes the movable plate. MoveThe board can be connected to a computer that can measure even small movements.

dilatometers of the connecting rod, also sometimes called push-rod dilatometers, are usually used to measure the expansion of the material when heated. This type of device measures a change in the volume of the test sample relative to the rod inside the device. This rod is a control sample with a known extension coefficient and comparison of the test sample to the user allows the user to calculate the expansion of the sample undergoing test of the dilatometer.

Dilatometer testing with modern laser or optical devices can be very sensitive and Juasure minor volume changes. For example, some laser dilatometers work repeatedly by handing a laser beam over the test item, and the laser receptor measures slight changes on average of the resulting shadow. The optical dilatometer will usually use a sensitive digital camera to record minor changes in greatSTI object or substance. This has another advantage that there is a non -contact system that can be used for items or substances that need to be measured without being physically manipulated.