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Introduction of Dissolved oxygen meter

Dissolved oxygen refers to the amount of oxygen dissolved in water, usually recorded as DO, expressed in milligrams of oxygen per liter of water (in mg/L or ppm). Some organic compounds are biodegraded under the action of aerobic bacteria, which consumes the dissolved oxygen in the water, and th... Read More

Detailed knowledge—Pressure measuring instrument

In the chemical production process, pressure not only affects the balance relationship and reaction rate of the production process, but also affects the important parameters of the system material balance. In the industrial production process, some require high pressure much higher than atmospher... Read More

Introduction of ph meter

Definition of ph meter A pH meter refers to an instrument used to determine the pH value of a solution. The pH meter works on the principle of a galvanic battery. The electromotive force between the two electrodes of the galvanic battery is based on Nerns’s law, which is not only related to... Read More

Definition and difference of gauge pressure, absolute pressure and differential pressure

In the automation industry, we often hear the words gauge pressure and absolute pressure. So what are gauge pressure and absolute pressure? What is the difference between them? The first introduction is atmospheric pressure. Atmospheric pressure: The pressure of a column of air on the earth’... Read More

Automation Encyclopedia-Introduction to Protection Level

The protection grade IP65 is often seen in the instrument parameters. Do you know what the letters and numbers of “IP65″ mean? Today I will introduce the protection level.IP65 IP is the abbreviation of Ingress Protection. The IP level is the protection level against the intrusion of f... Read More

Automation Encyclopedia-the development history of flow meters

Flow meters have a wide range of applications in the automation industry, for the measurement of various media such as water, oil, and gas. Today, I will introduce the development history of flow meters. In 1738, Daniel Bernoulli used the differential pressure method to measure water flow based ... Read More

Automation Encyclopedia-Absolute Error, Relative Error, Reference Error

In the parameters of some instruments, we often see accuracy of 1% FS or 0.5 grade. Do you know the meaning of these values? Today I will introduce the absolute error, relative error, and reference error. Absolute errorThe difference between the measurement result and the true value, that is, ab... Read More

Introduction of Conductivity meter

What principle knowledge should be mastered during the use of the conductivity meter? First, in order to avoid electrode polarization, the meter generates a highly stable sine wave signal and applies it to the electrode. The current flowing through the electrode is proportional to the conductivit... Read More

How to choose the Level Transmitter?

Introduction Liquid level measuring transmitter is an instrument that provides continuous liquid level measurement. It can be used to determine the level of liquid or bulk solids at a specific time. It can measure the liquid level of media such as water, viscous fluids and fuels, or dry media s... Read More

How to Calibrate a Flowmeter

Flowmeter is a kind of test equipment used to measure the flow of process fluid and gas in industrial plants and facilities. Common flowmeters are electromagnetic flowmeter, mass flowmeter, turbine flowmeter, vortex flowmeter, orifice flowmeter, Ultrasonic flowmeter. Flow rate refers to the spee... Read More

Choose the flowmeter as you need

Flow rate is a commonly used process control parameter in industrial production processes. Currently, there are approximately more than 100 different flow meters on the market. How should users choose products with higher performance and price? Today, we will take everyone to understand the perfo... Read More

Introduction of single flange and double flange differential pressure level gauge

In the process of industrial production and manufacturing, some of the tanks measured are easy to crystallize, highly viscous, extremely corrosive, and easy to solidify. Single and double flange differential pressure transmitters are often used in these occasions. , Such as: tanks, towers, kettle... Read More
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