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产品简介:PSZ130石油产品和润滑剂酸值测定仪是依据国家标准GB/T 7304-2000《石油产品和润滑剂酸值测定法》设计制造的,适用于测定能够溶解于甲苯和异丙醇混合溶剂的石油产品和润滑剂中的酸性组分。
概要:
试样溶解在含有少量水的甲苯异丙醇混合溶剂中,以氢氧化钾异丙醇标准溶液为滴定剂进行电位滴定,所用的电极对为玻璃指示电极甘汞参比电极,在手绘或自动绘制的电位滴定剂量的曲线上仅把明显突跃点作为终点,如果没有明显突跃点,则以相应的新配非水酸性或碱性缓冲溶液的电位值作为滴定终点。

技术指标:
1.测量范围:MV:0~±1999   PH:0~14.00
2.测量精度:MV:0.1%F.S    PH:±0.01
3.控制精度:±0.03PH或±3mv
4.输入抗阻:不小于1×1012Ω

使用意义和用途:
1.新的或使用后的油品酸性组分指的是添加剂或油品在使用过程中的降解产物如氧化产物等,这些物质可以通过用碱滴定而测得其相对含量,酸值就是在指定条件下测定这些物质在油品中的量,酸值可以用于控制润滑油的质量,有时也可用于测定润滑油在使用过程中的降解情况,但酸值作为润滑油报废指标必须通过经验来确定
2.由于各种各样的氧化产物都会影响酸值,同时有机物在腐蚀条件下变化也很大,所以此方法不能用于预测油品在使用过程中的腐蚀性能,例如酸值和油品对金属的腐蚀程度之间没有必然的联系。

Product Description: PSZ130petroleum products and lubricants - Determination of acid number instrument is designed and manufactured according to the national standard GB / T 7304-2000 "petroleum products and lubricants - Determination of acid number - Law applicable to the determination can be dissolved in a mixture of toluene and isopropanolthe solvent petroleum products and lubricants in the acidic components.
Summary:
The sample was dissolved in a mixed solvent of isopropyl alcohol in toluene containing a small amount of water, isopropanol standard solution of potassium hydroxide as the titrant potentiometric titration, the pair of electrodes used in the indicator electrode is a glass calomel reference electrode, in the hand-painted or automatically potentiometric titration dose curve drawn only significant jump point as the end point, if no significant jump in the corresponding new with non-aqueous acidic or alkaline buffer solution potential value as of the end of the titration.

Technical Specifications:
(1) Measuring range: MV: 0 to ± 1999 PH: 0 to 14.00
(2) measurement accuracy: MV: 0.1% FS PH: ± 0.01
3. The control accuracy: ± 0.03PH, or ± 3mv of
Input resistance: not less than 1 × 1012 ohm

Use the meaning and purpose:
1 after new or used oil acidic component refers to additives or oil degradation products such as oxidation products during use, these substances can be measured by titration with a base, obtaining the relative content, acid number is in determination of these substances in the quantity of oil, acid number can be used to control the quality of the lubricating oil is sometimes also be used for the determination of the degradation of the lubricant during use under specified conditions, but the acid number as a lubricant oil of end-of-life indicators must experience determined
2 due to the various oxidation products will affect the acid value, while organics under corrosive conditions may also vary widely, so this method can not be used to predict the corrosion of the oil during use, e.g. the acid and oil on is no necessary link between the degree of corrosion of metals.

 
   
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