thermal analyzerIt is a two-way automatic direct injection thermal analyzer. The gas circuit adopts the combination of electric six-way valve and solenoid valve, which can automatically program the desorption, injection and back blowing of the adsorption tube. The heating temperature of the adsorption tube and the heating temperature of the pipeline can be set independently, and the synchronization signal is output during injection, and the instrument can start the chromatography and the workstation at the same time.

Do you know what the operation requirements of the thermal analyzer are? Let's take a look.

1) Compatibility requirements. At present, after some workstation hardware is connected to the computer, there will be system crash, workstation crash, system restart, mouse jump and other phenomena. These phenomena need to be avoided from the source when the thermal analyzer is developed.

2) Requirements for measurement range. In the field of preparative chromatograph and ion chromatograph, the measurement range is usually more than 1V, reaching 5V or higher. The thermal analyzer requires the hardware to be scalable, and the above requirements can be met with a little modification.

3) sampling frequency and resolution requirements. The development of rapid analysis equipment such as capillary electrophoresis chromatography and ultra-liquid chromatography; the increasing demand for trace analysis; the discussion of "0", "3", "7" and the high reproducibility of retention time on the Internet Continuous fermentation.

4) Requirements for communication interface. In order to keep up with the changes of the host, USB communication is currently regarded as a bright spot by domestic manufacturers, but USB communication itself has the defect that the signal is easily interrupted. It is recommended to provide a serial port option in addition to USB communication.

Generally, when volatile components are present in the following four types of sample matrices, the thermal analyzer technology can be used:

1. The composition of volatile aroma and flavor substances in food.

2. Unwanted components in the sample matrix, such as residual solvents in commercial products.

3. Compositions of thermally degradable compounds in a solid matrix, such as plasticizers, additives, monomers, and the like. in polymeric materials.

4. Purposefully collect volatile components in the sample matrix, such as collecting volatile organic pollutants in the air with a sorbent tube.