This instrument is based on the petrochemical industry standards of the People's Republic of ChinaSH/T 0251-93According to the requirements of the "Determination of Alkali Value of Petroleum Products" for manufacturing and matchingZD-2AComposition of automatic potentiometric titrator, titration table, burette and other devices,Suitable for the determination of alkaline components in petroleum products and used petroleum products and additives.

1、 Main technical features

1This instrument uses the principle of acid-base neutralization and the method of perchloric acid potentiometric titration to determine the endpoint by the change in potential, and to measure and calculate the alkali value of the sample.

2This instrument is equipped with5Supporting measuring electrodes3Different specifications of burettes can meet the determination of alkaline components in oil products.

3This instrument has a wide measurement range, high measurement accuracy, complete supporting facilities, and is easy to use.

2、 Main technical parameters and indicators

ZD-2AType automatic potentiometric titrator

1Measurement range:pH：0～14.00)pH；

mV：0～±1999)mV；

2Measurement accuracy:pH：±0.01；

mV：0.1%F.S；

3Point control accuracy: ±0.03pHOr ±3mV；

4Input impedance: not less than(1×1012)Ω；

5Capacity analysis repeatability: not greater than0.3%F.S；

6Indoor temperature:0～35)℃；

7Relative humidity: ≤85%.