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November 17, 2023

What is the relationship between conductivity,TDS and salinity in water quality testing?

Overview Key Takeaways: Conductivity measures water's ability to conduct electricity (S/m) TDS (Total Dissolved Solids) indicates all dissolved substances in mg/L Salinity quantifies salt content, especially important in marine environments Delfino's instruments provide simultaneous measurement of all parameters Introduction to Water Quality Parameters Standards such as conductivity, TDS (Total Dissolved Solids), and salinity are fundamental metrics in water quality testing. Delfino's advanced...

November 14, 2023

Which industrial applications require monitoring of conductivity values?

Conductivity is one of the more commonly used and important water quality monitoring parameters. The conductivity of water refers to the degree to which the water in a target body of water can conduct electricity. The conductivity of water is measured by the degree of penetration of electricity into the water. In addition to being the basis for salinity and total dissolved solids calculations in most water bodies, conductivity values can also represent an early indicator of changes in water...

November 10, 2023

Application of ultrapure water equipment in the electronics industry

Ultrapure water is water produced by distillation, deionization, reverse osmosis technology or other appropriate supercritical fine technology for the purpose of developing ultrapure materials (semiconductor original materials, nanometer fine ceramic materials, etc.). Its resistivity is greater than 18MΩ.cm. , or close to 18.3MΩ.cm (25℃). Why does the electronics industry use ultrapure water equipment? Ultrapure water plays an increasingly important role in the production of electronic...

October 17, 2023

What is the measurement principle of the probe type ammonia nitrogen sensor?

Most of the excess ammonia nitrogen in water bodies is related to human activities, such as wastewater generated from industrial production, agricultural activities, and sewage treatment. If the high concentration of ammonia nitrogen in these wastewater is not treated or there is a problem in the treatment process, it will cause serious consequences if it is directly discharged. Ammonia nitrogen in natural water bodies exceeds the standard. In addition, when a large amount of organic matter...

October 09, 2023

How to install membrane-covered amperometric residual chlorine sensor in the flow cell?

Residual chlorine is one of the commonly used disinfectants. Monitoring the residual chlorine value can evaluate the disinfection effect during the water treatment process. Residual chlorine electrodes are usually used in various water quality treatment situations such as swimming pools, drinking water, water plants, medical institutions, industrial wastewater monitoring, etc. Daruifuno's residual chlorine sensor adopts a film-coated ampere system. There are three electrodes for monitoring...

September 27, 2023

How to properly install conductivity sensors in pipes?

Overview Conductivity is an important measure of ion concentration in water, making it essential to monitor in almost all types of water quality applications. Conductivity electrodes are widely used in drinking water, wastewater, groundwater, seawater, agricultural irrigation water, industrial process water, and more. According to water quality classification, there are ultrapure water, pure water, industrial water, sewage, concentrated liquid, etc. Different water qualities require the use of...

September 26, 2023

How to monitor the conductivity of hydrogen fuel cell coolant?

? Overview A hydrogen fuel cell is a device that generates electrical energy through the chemical reaction of hydrogen and oxygen. In order to ensure the uniformity of the temperature distribution of the fuel cell, the temperature difference between the inlet and outlet coolant generally does not exceed 10°C. For high-power fuel cells, the heat is generally taken away through specially treated water, and then dissipated through an external cooling device. Hydrogen fuel cells have strict...

September 18, 2023

What is the difference between COD and BOD and the connection?

Overview During the sewage treatment process, in order to ensure that the treated water reaches discharge standards, water quality is monitored at every step. According to the data from the water quality monitoring equipment, appropriate treatment methods are used to treat the water quality to the required range and enter the next treatment link. In the process of sewage treatment, COD and BOD are two very important indicators. So what is COD? What is BOD? What are their differences and...

September 14, 2023

How to monitor pH value during drinking water treatment process?

The drinking water treatment industry refers to the industry that treats raw water through various physical, chemical and biological methods to make it meet drinking water quality standards. This industry includes the selection of water sources, water quality testing, research on water treatment processes, manufacturing and sales of water treatment equipment, and production and supply of drinking water. The main purpose of drinking water treatment is to remove harmful substances in the water,...

August 29, 2023

How to choose the suitable sludge sensor to measure sludge concentration?

Sludge concentration refers to the total amount of organic matter and inorganic matter in the sludge. It is one of the important parameters in the sludge treatment process. It can reflect the operation of the sludge treatment process and can control the changes of various parameters in the sludge treatment process. , so as to achieve the best effect of sludge treatment. The sludge concentration sensor is based on the combined infrared absorption and scattering light method. The infrared light...

August 15, 2023

How to install a pH probe on the side wall of the fermentation tank?

Overview The pH electrode installed in the bioreactor needs to be able to withstand the high temperature disinfection and sterilization process. And it can provide reliable and stable measurement data under high temperature environment. Daruifuno's ASP120E series pH electrodes are specially designed for some special industrial environments, including special occasions such as fermentation, high temperature, chemical process and pure water. In some industries such as the fermentation industry,...

August 03, 2023

How to choose a pH sensor for high temperature and high acid-alkali environment?

In some special industrial environments, the solution will be highly acidic or highly alkaline, and usually accompanied by high temperature, exceeding 100°C. In this case, ordinary pH sensors used in surface water, sewage and wastewater environments are not suitable. So how to choose a pH sensor that can be used in high temperature and high acid-base environment? The ASP125E pH glass electrode developed and produced by Daruifuno is designed for special industrial environments. The pH electrode...

July 31, 2023

How to measure the pH turbidity chlorine value for secondary water supply?

The secondary water supply of domestic drinking water refers to the form of water supply that transfers tap water to users for daily drinking through water storage equipment and pressurization and water purification facilities. The secondary water supply is mainly established to make up for the lack of pressure in municipal water supply pipelines and to ensure water use for high-rise people. Compared with raw water supply, the water quality of secondary water supply is more likely to be...

July 27, 2023

What is the difference between residual chlorine and total chlorine?

Overview In the water treatment industry where disinfectants are used, we often hear about residual chlorine and total chlorine. Are they the same? Can a free chlorine sensor be used to monitor total chlorine? Today, we will explore the differences between residual chlorine and total chlorine. 1. Different Definitions Residual chlorine refers to the content of free chlorine in water, which is the residual amount of disinfectants (such as chlorine gas, sodium hypochlorite, etc.) in water....

July 25, 2023

How to measure the conductivity value of ultrapure water?

Ultrapure water has a very low conductivity, typically around 0.055 ?S/cm at 25°C. This means that almost no ions are present in ultrapure water, so electricity can hardly pass through. The application of ultrapure water is very extensive, and the monitoring of the conductivity value of ultrapure water is also very important. In the pharmaceutical industry, monitoring the conductivity value of ultrapure water can ensure the purity of drugs. In the electronics industry, monitoring the...

July 17, 2023

What is the principle of optical UV absorption COD sensor?

Chemical oxygen demand is also called chemical oxygen demand, or COD for short. COD is an important indicator of water pollution. The unit of COD is mg/L. At present, the principles of measuring COD mainly include chemical titration (potassium dichromate method, potassium permanganate method), electrochemical measurement method and UV method. Principle of Chemical Titration The COD content was determined by chemical titration. The disadvantages are that the measurement time is too long, the...

July 06, 2023

How to choose the material of conductivity sensor for cooling tower?

When using conductivity sensors in cooling towers, it is usually more common and applicable to choose stainless steel material. Stainless steel has good corrosion resistance and can resist chemicals in water and corrosive environments, which makes stainless steel sensors more durable for long-term use. In addition, stainless steel is relatively easy to clean and maintain. Graphite sensors can also be used in certain situations, especially when high temperatures or strong acids and bases are...

June 25, 2023

What does a conductivity meter measure in water?

Conductivity is a physical quantity that describes the electrical conductivity of a liquid or substance. It represents the voltage required to pass a current per unit length through a unit cross-sectional area. Conductivity is the reciprocal of conductance, and the unit is S/m. Conductivity is an important parameter used to measure the conductivity of a substance, which depends on the concentration and mobility of free charge carriers in the substance. In a more conductive substance, the...

June 06, 2023

How to choose the suitable dissolved oxygen sensor for different application?

Delfino is a company that provides water quality monitoring solutions. We provide three types of online digital dissolved oxygen sensor: OPTOD, OPD700 and OPD790. They all use fluorescence method to measure oxygen concentration of water. The range of these three sensors is 0~20mg/L, that is, when measuring the dissolved oxygen concentration, it can measure the range from 0 to 20 mg/L. This range can meet the measurement needs of dissolved oxygen concentration in many application fields. So what...

June 01, 2023

ASP500 Online pH Sensor Designed for Pure Water

pH is one of the important indicators for water quality monitoring. Different solutions have different requirements for pH electrodes. Pure water is a liquid that is used in many industries. Examples include the pharmaceutical industry and biotechnology, the manufacture of electrical components, the field of semiconductor production, the food and beverage industry. In the field of energy production, power generation and petrochemical industry, pure water or ultrapure water is used as...

May 24, 2023

Online Residual Chlorine Sensor for Swimming Pool

With the continuous enhancement of people's health awareness, swimming health has attracted more and more people's attention, and the water quality and sanitation of swimming pools have naturally become the focus of everyone's attention. In order to ensure the health of swimmers, qualified swimming pools will test the swimming pool water quality every day. Once any indicator is found to be unqualified, it will be adjusted. One of the most important indicators is residual chlorine, because the...

April 10, 2023

New OPD790 dissolved oxygen sensor with temperature, pressure and salinity compensation

Environmental factors that affect the content of dissolved oxygen in water include water temperature, oxygen partial pressure, salinity and other factors. When the partial pressure of oxygen and the salt content are constant, the saturated content of dissolved oxygen gradually decreases with the increase of water temperature. In the case of low temperature, the change of the saturated content of dissolved oxygen with temperature is more significant. When the water temperature and oxygen partial...

September 14, 2024

Mid-Autumn Festival

Mid-Autumn Festival Celebrating the Mid-Autumn Festival as a family is a rich and meaningful tradition in Chinese culture, especially in China, Taiwan, Hong Kong, Singapore and Chinese communities around the world. Here are some typical ways families celebrate this festival: Mooncake Appreciation: Eating mooncakes is one of the most iconic activities during the Mid-Autumn Festival. Families gather to share a variety of mooncakes, which are round pastries filled with sweet or savory ingredients...

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