diary

2022 10-19

How to Calculate Liquid Flow Rate？
The flow rate of liquid refers to the volume of fluid passing through a cross section of a pipe or open channel in unit time, also known as instantaneous flow rate, represented by Q. Formula: Q=Sv, unit: m^3/s or L/s. where S is the cross-sectional area (m^2) and v is the water velocity (m/s)
2022 10-10

The role of the flow meter
[email protected] Flow meter is a professional automatic measuring instrument, its main function is to measure the flow of fluid, and the measuring medium includes liquid, gas, steam, mixed slurry, solid dust, etc. It is the special function of the flowmeter. In the field of industrial automation, the flowmeter and flow sensor are called the eyes of the automation system. The measurement results are transmitted to the upper computer system, and the system integrates and analyzes the data, and then pre- The designed scheme is applied to the upstream and downstream control systems to achieve the purpose of intelligent automatic control.
2022 09-30

Gas Flow Meter Transmitter Type
1. Velocity flow meter [email protected] Gas turbine flowmeter The velocity flowmeter is a flowmeter based on the principle of directly measuring the flow velocity of the full pipe in a closed pipe. Industrial applications mainly include:
2022 09-28

How does a mass flow controller work?
[email protected] Mass flow controllers can be used to control a variety of clean and dry gases, including corrosive and special gases, but the use of corrosive and special gases requires the correct selection of models and sealing materials. When ordering, the user should contact the supplier to make special instructions when using the gas, so as to avoid serious losses due to wrong selection or sealing material. Generally, the material that the mass flow control brake contacts with the working gas is 316L stainless steel, and the sealing material is divided into metal welding, PTFE and ordinary fluorine rubber glue. MFCs with metal welded seals for mass flow controllers can in principle be used for any gas, including various corrosive and special gases. For highly corrosive gases such as boron tribromide, boron trichloride, hydrogen fluoride and gold used in MOCVD The oxidizing gas is recommended to use a metal-welded sealed MFC.
2022 09-21

How does an ultrasonic flow meter work?
[email protected] The ultrasonic flow meter utilizes the principle of low voltage and multi-pulse time difference, adopts high-precision and ultra-stable double-balanced signal differential transmission and differential reception digital detection technology to measure the acoustic wave transmission time in the upstream and downstream directions , and calculates the flow rate according to the time difference. Ultrasonic flow meter has the characteristics of good stability, small zero drift, high measurement accuracy, wide range ratio and strong anti-interference.
2022 09-19

gear metering pump working principle
[email protected] Today, i will introduce the working principle of gear dosing metering pump to you. The gear metering pump is driven by a pair of intermeshing gears, one of which is a driving gear and the other is a passive gear, which is driven by the driving gear to mesh and rotate. There is a small gap between the gear and the casing of the pump. When the gear rotates, in the suction chamber where the gear teeth gradually disengage, the closed volume between the teeth increases, forming a partial vacuum, and the liquid is sucked into the suction chamber under the action of the pressure difference. It is pushed forward by the gear between it and the casing, and sent to the liquid discharge chamber. In the liquid discharge chamber, the two gears are gradually meshed, the volume is reduced, and the liquid between the gears is squeezed to the liquid discharge port. Because the machining accuracy of the gear metering pump is very high, whether it is the tooth surface accuracy of the gear, or the matching accuracy of the gear and the casing, the gear and the tooth top are very high, so the gear metering pump has a certain rotational displacement. In other words, every time the gear rotates, the volume of the liquid discharged is constant, so as the speed of the gear metering pump is adjusted, the gear metering pump can discharge a corresponding amount of liquid.

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Shanghai JSN Micro Flow Meter CO.,LTD as a high-tech industrial products manufacturing and complete sets of product sales, R & D, production, processing and sales as one, with independent import and export rights of enterprises.

The company's main flow meter, level meter, and pressure controller, temperature controller, analytical instruments and other various types of instrumentation. To solve all kinds of problems, and provide complete sales service for customers with professional technical point of view.

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