Maintenance of Automatic Water-Soluble Acid Analyzers

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The automatic water-soluble acid analyzer is designed and developed in accordance with the GB/T 7598 standard. In the experiment, the sample is mixed with an equal volume of distilled water and shaken; the aqueous extract obtained is then used to determine its pH value through colorimetry. Water-soluble acids suitable for petroleum products such as transformer oil, turbine oil, and fire-resistant oil. Maintenance of Automatic Water-Soluble Acid Determinators 1. Replacing the indicator: When the indicators bromocresol green and bromocresol purple are used up, remove them from their original bottles, replace them with new ones, and then put them back in place as before. II. Replacing the peristaltic pump tube: Open the upper cover of the instrument, pull upward on the lever of the peristaltic pump to loosen the clamp holding the tube in place. Remove the worn-out old pump tube, take off the hose clamp from it, fit a new pump tube in its place, then reinstall the new tube back into the pump body. Use the lever to push the clamp back into position. III. Replacing printer paper: Press the button shown in Figure 1, insert the printer paper into the printer as indicated in Figure 2, and then close the front cover.