KPH310 Online PH Sensor Signal Output: RS-485 Double High Impedance Differential Amplifier Ip68

1.Application Environment

For environmental water quality monitoring, acid/alkali/salt solution, chemical reaction process, industrial production process, can meet the majority of industrial applications online pH measurement requirements.

2.Feature

• Signal Output: RS-485(Modbus/RTU protocol).
• Convenient to connect to PLC, DCS, Industrial Control Computer, General Controller, paperless recording instrument or touch screen, and other third-party equipment.
• Double high impedance Differential amplifier, strong anti-interference, fast response.
• The patented pH probe, with an internal reference fluid at a pressure of at least 100 kpa (1 bar), oozes extremely slowly from the microporous salt bridge, with a forward exudation lasting more than 20 months. Such a reference system is very stable, electrode life than ordinary industrial electrode times longer.
• Easy to install: submerged installation.
• Ip68, protection level.

3.Technical Specifications

4.Dimensional Drawing

Tips: Q&A

1.Why does the same sample give different readings on two pH meters?

PH measurement errors are due to pH electrode, pH meter host, and standard buffer.Due to two pH meter calibration conditions are not the same (e.g., correction made at different times), resulting in slightly different measurements, so use the same buffer at the same time.

Two pH meters were used for calibration, and then the pH value of the sample was determined simultaneously.

2.What is a composite electrode?

An electrode that combines a pH glass electrode with a reference electrode is called a pH composite electrode.The main advantage of the composite electrode is the combination of two

For one, easy to use. The structure of pH composite electrode mainly consists of electrode bulb, support rod, reference electrode, reference solution, shell, and liquid

Junction, electrode cap, electrode wire, joint, etc.

3. How Does a Differential pH Sensor Work?

Differential pH sensors and ORP sensors employ a field-proven method that uses three electrodes instead of the two used in conventional pH sensors. The key difference is in the reference cell design. While a combination pH electrode has an Ag/AgCl reference wire in KCl solution, a differential pH sensor reference is a measuring pH electrode in a known pH 7.0 buffered cell solution. This reference cell (E2 in the figure on the left) makes electrical contact with the process via a double junction salt bridge. The other measuring pH electrode (E1) is in direct contact with the process. The process and reference electrodes measure the pH differentially with respect to a third metal ground electrode (E3).