Qiwei PHS-25 pH meter desktop microcomputer

Introduction

Qiwei PHS-25  pH meter (desktop microcomputer) is a desktop digital pH meter with a measurement accuracy of 0.05pH. It adopts imported high-quality integrated components and is controlled by a microprocessor. It has stable performance and accurate and reliable measurement. PHS-25 pH meter is often used in the laboratory to test the acidity value and mV value of the solution. It uses touch buttons and manual temperature compensation.

Note: The original model of PHS-25 is PHS-25C, and the original model of PHS-25B is PHS-25CB.

Applications

PHS-25 pH meter can be widely used in environmental protection, medicine, food, chemical industry and scientific research departments for chemical analysis and detection of pH value.

Product circuit principle

PHS-25 PH meter is a DC amplifier with high input impedance, and the impedance transformation is obtained through a high input impedance integrated circuit. The pH meter has the function of temperature compensation and electrode slope compensation because the pH value of the solution is related to the temperature, and the mV-pH conversion slope of the glass electrode is generally lower than the theoretical value, and decreases with the increase of use and storage time. There is a certain degree of discreteness between the electrodes. The temperature compensation of the pH meter and the pH-mV conversion slope compensation of the electrode, as well as the pH positioning and calibration formula are automatically controlled and adjusted by the microprocessor.

Pictures

Host x1, Buffer reagent x3, Encasement box x1

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.