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Standards Development
This proposal specifies an automatic potentiometric titration test method of determining the chloride ion content of phosphate ester turbine control fluids. The lower limit of the determination is about 1.0 mg/kg.
The chloride ion content is an important characteristic of phosphate ester turbine control fluids, as chloride ions are corrosive to metals even at relatively low levels, it can cause corrosion of the servo valve in the electro-hydraulic control (EHC) system and ultimately affect the operation of the EHC system. Usually, customers and manufacturers pay more attention to the chlorine content in phosphate ester turbine control fluids, but experience and research have confirmed that "chlorine" is not a problem before it is converted into "chloride" ions through fluid degradation or pollution. Therefore, the determination of chloride ion content is crucial for phosphate ester turbine control fluids. This proposal specifies an automatic potentiometric titration test method of determining the chloride ion content to assist customers in monitoring the chloride ion, so as to ensure the safe, economical and environmentally friendly operation of equipment.
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