MA-1 Smart Karl Fischer Moisture Analyzer Operating Procedure
When the instrument is installed as shown in the figure, you can enter the instrument use phase. In order to operate the instrument better, we will introduce the process of testing the sample:
1. Preparation before use: Make sure the instrument connection is installed correctly and check that the knobs are tightened on each interface.
2. Inhale methanol: Turn on the power switch of the instrument, click the “Enter†button on the display, the main menu will be displayed on the screen, and then click the “Methanol†button. The interface will enter the methanol absorption menu. Press and hold the “Enter†button on the interface to start the instrument. In the mouth of the bottle, the state of the anhydrous methanol is inhaled. At this time, the stopper of the feeding hole should be relaxed (the liquid electrode is immersed in the end of the electrode column of the electrode). Click the "Exit" button and the interface will retreat to the main menu;
3. Injecting liquid: Click “Manual Control†button to display the new interface, then click “Inject†button, then click “Enter†button, the instrument will automatically enter the infusion state, and the pump body piston will automatically stop when it moves to the upper limit. Click the “Exit†button and the interface will return to the manual control state.
4. Aspirate: Click the “Aspirate†button, then click the “Enter†button, the instrument will start to suck the Carbs reagent into the pump body, and automatically stop when it reaches the lower limit (the three-way switching valve automatically switches to the aspiration state when aspirating, After the aspiration stops, the instrument automatically reverses and the three-way valve is transferred to the infusion state. Click the "Exit" button and the interface will return to the manual control state:
5. Hit the blank: Click the “Blank†button, then click the “Enter†button. At this time, the instrument enters the blank (moisture in methanol) state, and at the same time, the air in the pump body in the first aspiration is empty, blank. After the game is finished, the instrument automatically ends and prompts the blank to end. Click the “Exit†button, the interface will return to the manual control state, and then press the “Exit†button, the interface will retreat to the main menu;
6. Calibration: Click the “Calibration†button, then click the “Enter†button, then inject 10 μl (10 mg) of distilled water into the five-neck bottle with a 10 μl micro-injector. Click the “Enter†button and the instrument will start to calibrate the Carbide solution. It can be calibrated five times in a row, and the instrument will automatically save the calibration result into the system memory and calculate the average value. After the end, press the “Exit†button and the interface will retreat to the main menu.
7. Sample detection: After the calibration is completed, the instrument can automatically detect the sample. Click the “sample detection†button on the main menu, then click “sample weightâ€, press the interface prompt to enter the sample weight, press “confirm†button, and then click “delay time†(in general, the sample is liquid delay time is l0- 15 seconds, if the sample is solid, according to its solubility is about 30-60 seconds) press the "confirm" button, then click the "enter" button, the instrument enters the automatic detection state; if multiple tests are performed and the sample weight is different, Repeat steps 5-7.
8. Discharge the waste liquid: After the continuous detection of the instrument, the solution in the five-neck bottle will gradually increase. When the visual solution exceeds half the volume of the five-neck bottle, a part of the waste solution should be drained first. At this point, click the “Draining Waste†button on the main menu, and press the “Enter†button, the instrument will automatically discharge the waste liquid from the five bottles into the waste bottle.
9. Data display: After the end of the process, the instrument will store the entire test result in memory. Press "View Report" to query the results.
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