Daily maintenance of coal analysis instruments

Daily maintenance is as follows:

1. After electrolysis occurs in the electrolysis cell, the electrolysis cell should be opened, and the electrode should be scrubbed with ethanol or acetone to make the electrode appear bright silver white. The contamination can be handled carefully with fine sandpaper or a knife, and the COD analyzer can remove the attachment on the electrode. And then use ethanol or acetone to clean, be careful not to use other organic solvents to scrub the wall of the Plexiglas cell to prevent possible cracking of the shell. Coal testing equipment, coal quality analysis equipment 2. Glass melting board should be cleaned when there are black sinks in the pipeline. The cleaning method is as follows:

Remove the electrolytic cell (open the lid) and place some water in the electrolytic cell so as not to submerge it into the melting plate. Invert the electrolytic cell, and use a pipette to inject the prepared lotion (5 g of potassium dichromate and 10 ml of water into the branch pipe of the melting plate, slowly add 100 ml of concentrated sulfuric acid after heating and cooling). , In repeated 1 - 2 times, you can remove the black sink structure in the melting board and branch pipe. Then rinse the electrolytic cell with tap water, and use the ear syringe to pump water from the melting plate until no wash liquid remains. The melting plate should be white as it was. Absorb the glass melting plate and its branch tubes with filter paper, and then add the electrolyte.

3. The rubber tube connected to the gas line should be inspected frequently, and the gas leaks at the joints are most likely to be aged.

4. The small porcelain boat that holds the coal sample should be kept in a clean container. The new porcelain boat should be treated with high temperature before it is used for the first time. The weighed porcelain boats with coal samples must be particularly careful not to be contaminated by coal-bound hands or tables, and it is advisable to have a white porcelain boat that houses porcelain boats.

5. Regularly test the instrument with the standard to check whether the instrument is normal. If the reducer breaks, the electrolyte pole is contaminated, the air path leaks, and the air is blocked.

6. The instrument should be protected against ingress of dust and corrosive gases and placed in a dry environment. If it is not used for a long time, it should be covered and the power should be taken out regularly to bake the moisture inside the instrument. If the electrolysis cell is not used for a long time, the connecting hose should be removed to prevent its aging and adhesion.