Spectrum Analyzer Operating Instructions_Spectrum Analysis Instrument Maintenance

　　Spectrum Analyzer Operating Instructions

　　1. Purpose

　　Use the spectrum analyzer correctly to ensure the accuracy of the results.

　　2. Scope of application

　　AURN2500 Spectrum Analyzer.

　　3. Responsibilities

　　Operation, maintenance, and care of spectrum analyzers by laboratory operators.

　　4. Operation method

　　4.1 Preparation work

　　4.1.1 Turn on the power.  Turn on the power supply: first turn on the printer, then turn on the monitor, and finally turn on the instrument. (Doing this can prevent the computer from malfunctioning)

　　4.1.2 Instrument preheating In order to obtain stable analysis results, the temperature inside the spectroscopic chamber of the instrument must be constant. Turn it on for at least 30-60 minutes (depending on the ambient temperature). The instrument can only work normally after it shows that the temperature is normal.

　　4.1.3 Sample preparation

　　4..1.3.1 After smelting according to the preliminary formula in the red furnace workshop, one sample from each furnace will be sent to the three-dimensional coordinate room of the Quality Assurance Department for ADC 12 chemical composition analysis.

　　4.1.3.2 The analysis surface must be flattened with a lathe. The surface is required to be within RA3.2, with no burrs on the edges, no trachoma, and no protruding pores in the middle.

　　4.1.3.3 The analysis surface must not be contaminated, touched by hands, or oxidized, otherwise correct analysis results cannot be obtained.

　　4.1.4 Check the pole distance. Use a pole distance gauge to check the pole distance. The distance between the sample surface and the electrode tip is 4mm. (Prevent high voltage short circuit)

　　4.1.5 Turn on the argon gas, open the argon gas cylinder, adjust the pressure reduction, and adjust the argon gas outlet pressure to about 0.35-0.4MPA.

　　4.1.6 Flush the excitation chamber. In order to prevent oxidation of the sample during the excitation process, the air in the excitation chamber should be completely eliminated. When analyzing a sample, if oxygen is present, the excitation spot will be white. If there is no oxygen, the edge of the excitation spot will be black, and the concentrated discharge uniform metal layer will not be pockmarked in the center. If necessary, press the F8 key again to turn on the argon gas and flush the excitation chamber with high flow for 3-5 minutes.

　　4.2 Daily analysis

　　4.2.1 Store the prepared sample after excitation on the electrolysis machine. Adjust the position of the pneumatic pressure rod so that it can press the sample firmly after air intake. Close the electrode rack cover door, enter the heat number of the sample and press the Enter key. Then press the instrument's activation button and wait until the screen displays "Excitation" before removing your hand. After a short wait, you will see the analysis results displayed on the screen.

　　4.2.2 Change points

　　Normally, a sample needs to be excited at 1-3 points for normal analysis, and the average value of multiple excitations is taken as the dividing point of the sample to improve the authenticity of the analysis. After obtaining some data, the next excitation can be carried out by changing the point. Before changing the point, the electrode must be thoroughly cleaned with an electrode brush. In order to prevent external air from entering the excitation chamber, the point change should be as fast as possible. For unsatisfactory analysis results, you can press the F6 key to delete the excitation results.

　　4.2.3 Issue reports

　　After the sample block is analyzed, a "Product Material Analysis Report" must be issued.

　　4.2.4 Changing samples

　　After a sample is excited, press the F7 key, and after inputting the new sample heat, the next sample can be excited.

　　4.3 Shutdown

　　4.3.1 If the instrument is not used temporarily, you can press F10 to close the program. At this time, the instrument is in standby mode, and a small flow of argon gas flows to maintain the argon atmosphere in the excitation chamber, so that the instrument can be put into use at any time. Press any key to turn the instrument back on. If you do not use the instrument for a long time, you can press F10 to close the program, and then shut down the instrument in sequence.

　　4.3.2 Shutdown sequence: first turn off the argon gas, instrument power supply, and monitor power supply.

　　4.3.3 When the instrument is not in use, a sample with a flat surface should be placed on the excitation hole to keep the excitation chamber clean and prevent air from entering. It is not allowed to use a polar distance gauge as a substitute to cover the excitation hole to prevent the excitation hole from being damaged when the instrument is turned on. Incorrect excitation of samples and electrodes can cause major damage to the instrument.

　　Spectral analysis instrument maintenance

　　1. The external environment in which the instrument works

　　(1) Interference from surrounding strong magnetic fields

　　A reasonable working environment for the equipment requires it to be installed in a place without electromagnetic interference such as motors , vibrations, electromagnetics, high voltages or high-frequency welders, otherwise it will interfere with the spectrum of the equipment or cause the equipment to not work properly. spectrum analyzer

　　(2) Influence of ambient temperature and humidity

　　The room temperature should be maintained at 20~25°C. Too high or too low a temperature will affect the normal operation of the equipment, so it is best to have an air conditioner. The relative humidity in the air should be maintained at <70%. Excessive humidity will cause the internal high-voltage unit to generate Arcing and discharge.

　　2. Maintenance and cleaning of instruments

　　(1) Cleaning of surface and shell. The surface of the instrument can be cleaned with a slightly damp rag. Do not use alkaline or acidic detergents. Neutral detergents should be used.

　　(2) Cleaning of the interior and detector. During the cleaning process, care must be taken not to drop foreign objects into the test window. The test window should be kept clean. At the same time, hard objects cannot be used to contact the test window to prevent damage to the detector window and X-rays. tube window. (3) It is prohibited to place teacups, heavy objects and other items unrelated to the test on the instrument to avoid contamination or damage to the instrument.