Suzhou Delfino Environmental Technology Co., Ltd.
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 has a special design in terms of structure and
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 polluted because it has to go through more links. Ther
What is the difference between residual chlorine and total chlorine?
In the water treatment industry where disinfectants are used, we often hear residual chlorine and total chlorine, so are they the same? Can a free chlorine sensor be used to monitor total chlorine? Today we will learn about the difference between residual chlorine and total chlorine. 1. Different Definition Residual chlorine refers to the content of free chlorine in water, which is the residual
How to measure the conductivity value of ultrapure water?
Ultrapure water has a very low conductivity, typically around 0.055 µS/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 conductivity value can ensure the cleanliness of electr
What turbidity sensor is suitable for use in seawater?
Turbidity value is one of the indicators to evaluate the content of suspended matter in seawater. High turbidity values can indicate that there is a large amount of pollutants entering the seawater, such as sediment, suspended particles, organic matter and chemicals. Monitoring turbidity values can help protect marine ecosystems and prevent marine pollution. Seawater contains various salts and chemical substances, and the turbidity sensor needs to have good corrosion resistance to ensure long-term stable operation. The range of turbidity in
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 de
How to choose a high temperature pH sensor?
The application of high-temperature pH sensor is also very extensive, in power plants, petrochemicals, metallurgical electronics, mining, papermaking, biological fermentation engineering, medicine, food and beverage and other industries. The pH electrode can continuously monitor the pH value and temperature of the aqueous solution, and the pH controller can also realize the control and output functions. Daruifuno's ASP125E pH glass electrode is an acid and alkali-resistant high-tempera
What is a combination pH electrode?
The pH sensors developed and produced by Daruifuno are all combination sensors, so what is a combination pH electrode? Today we will explain in detail the meaning of the combination pH electrode. Beginning in 1947, manufacturers of pH sensors have combined indicating and reference electrodes to form a pH electrode. Since then, this combination electrode has been widely used in laboratory and industrial on-line applications. There are two types of combination pH sensors, refillabl
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 an
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 conductivity is high, while in an insulator, the conductivi
What is the difference between digital pH sensor and analog pH sensor?
Daruifuno's pH sensors are available in both analog and digital. Analog pH sensors are usually low-cost and can be connected to analog controllers, while digital pH sensors are expensive. So what is the difference between digital pH sensors and analog pH sensors? First of all, the signal output methods of digital pH sensors and analog pH sensors are different. Analog pH sensors usually output only chemical signals, weak voltage signals, and need to be connected to a transmi
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
How to calibrate the pH sensor?
After purchasing a new pH sensor, the user usually needs to calibrate the pH electrode in order to eliminate the error between the meter and the sensor. So how to calibrate the pH electrode? Today, I will introduce the calibration method of the pH ORP controller of the daruifuno brand. This pH controller supports three-point calibration, and users can modify the calibration points according to their own standard solutions. Before calibrating the pH sensor, we must first ensure th
What does temperature compensation of a pH sensor mean?
A pH sensor, also known as a pH meter, is used to measure the pH of a liquid. Usually when referring to pH sensors, temperature compensation is mentioned, so what does temperature compensation mean? The function of the temperature compensation function is mainly to correct the deviation caused by the difference between the temperature of the standard buffer solution and other standard samples during calibration (generally 25°C) and the actual sample solution temperature.
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 circulating water for boiler water supply, cooling system
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 chlorine content of swimming p
Low range Laser Turbidity Sensor OLTU600 for Drinking Water
Turbidity, generally speaking, turbidity refers to the turbidity of the water body. Specifically, it refers to the degree of turbidity of the water, which is a measure of the reduction in the clarity of the water caused by insoluble substances in the water. Insoluble substances include solid particles suspended in water (soil, sand, fine organic and inorganic substances, etc.), plankton, microorganisms and colloidal substances, etc.
Suzhou Delfino Shanghai International Expo ended successfully
From April 19th to 21st, 2023, the 24th IE Expo China kicked off at the Shanghai New International Expo Center. After two years, China Expo opened all 17 exhibition halls for the first time. With an unprecedented scale of nearly 196,
Effect of ammonia nitrogen content on water quality
Ammonia nitrogen refers to the nitrogen existing in the form of free ammonia NH3 ion and ammonium ion NH4 in water. Ammonia nitrogen in water refers to the compound ammonia existing in the form of ammonia or ammonium ions. The source of ammonia nitrogen in water is mainly the decomposition products of nitrogen-containing organic matter in domestic sewage under the action of microorganisms. For example, during the growth of crops and the use of nitrogen fertilizers, ammonia nitrogen will also be produced, and it will be discharged into the urban s
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.
The effect of pH sensor on activated sludge in sewage treatment
pH value not only directly affects the type and quantity of activated sludge microorganisms in the treatment process, their life activities, metabolic methods, types and surface characteristics of metabolites, but also is one of the main elements that determine the sludge microbial ecosystem. The sedimentation characteristics of sludge are closely related to the sedimentation process. When the pH value of the mixed so
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