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Refrigerant standard leak hole, adjustable channel type leak hole, helium permeation type standard leak hole VTL-A type, channel type standard leak hole VTL-B type (He), channel type positive pressure leak hole VTL-C type
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The company has: helium mass spectrometry leak detection, various CNC machine tools, ultra-high vacuum heat treatment furnace, electrolytic polishing and other professional equipment, and has a professional vacuum design, precision machinery, electrical engineers.Service team, one-stop solution to system problems, to serve customers from a professional point of view.
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Standard leak
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MPCVD
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Capacitance film gauge vacuum gauge
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High and low vacuum calibration device
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Helium leak calibration device
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Standard Leak and Reference for Calibration Specification of Differential Pressure Airtight Leak Detector
Tightness leak detector calibration leak VTL-DA type (Air)
Air tightness leak detectors generally have direct pressure type, differential pressure type and flow type, etc. The detection system forms a pressure difference under vacuum or positive pressure conditions, and calculates the leakage by judging the change of pressure or flow.
Refrigerant standard leakage hole (adjustable leakage rate) VTL-20B type
The VTL-20B series standard leak hole is a channel type refrigerant (halogen) standard leak hole, and the leak hole element is a micro-channel capillary tube. Its leak rate or calibration accuracy is 0.1g/a, and the leak rate range is:(0~10)g/a. Customers are supported to specify the leak rate or customize the annual leak rate, such as 1g/a,2.5g/a,5g/a,..., Other leakage rate units can also be specified, such as Pa · m3/s (≥ 5 × 10-6 Pa · m3/s), and large leakage rate of 10~100g/a can also be customized.
Refrigerant standard leak hole (fixed value) VTL-20D type
VTL-20D series of leaks are channel-type fixed-value standard leaks, and the leak element is a micro-channel capillary, with a leak rate or calibration accuracy of 0.1g/a, which supports customers to specify leak rate or annual leak rate customization, such as 1g/a,2.5g/a,5g/a,..., Other leakage rate units can also be specified, such as pa m/s (≥ 5x 10-6Pa m3/s), and large leakage rate of 10~100g/a can also be customized.
The adjustable leak rate standard leak hole is a channel type leak hole, which can span 3 leak rate orders of magnitude. It can be used as a vacuum leak hole or a positive pressure leak hole, realizing the superior performance of 3 calibration orders of one leak hole and greatly facilitating the use of customers.
Custom leak (helium leak detector built-in standard leak) VTL-EA type
Leak detector built-in standard leak hole is a very important part of the leak detector components, and is closely related to the accuracy of the leak detector, a standard leak rate used to calibrate its accuracy in the detection process of the leak detector.
Custom Leak (Open Standard Leak) VTL-D Type
Open gas standard leak hole can specify pressure, leakage rate, etc. at the same time. Open standard leak hole does not have gas chamber or gas storage device. It needs external gas source and is suitable for any leak detector and leak detection system.
Channel type positive pressure leak VTL-C type
According to the outlet pressure, the leakage hole is divided into vacuum (negative pressure) leakage hole and positive pressure leakage hole, which is mainly determined by the use conditions. When the outlet of the leak is to the atmosphere, the standard leak is called a positive pressure leak. For example, the leak with the suction gun method belongs to this category.
MPCVD single crystal diamond growth machine equipment
Microwave plasma chemical vapor deposition (Microwave Plasma Chemical Vapor Deposition) is the preferred method for the preparation of diamond with high efficiency and high quality, which breaks the limitation of equipment on substrate size and provides conditions for the growth of large area single crystal diamond.
Capacitance film gauge vacuum gauge
Product Features At the same time, three-way film gauge is displayed, and the three-way range can be adjusted separately. Input voltage error 5MV Variable decimal point, units
High and low vacuum calibration device
High and low vacuum calibration device
Helium leak calibration device
This document addresses the composition, operation, and maintenance of DBLS10-5 helium leak calibration devices. This device is suitable for measuring and testing units to carry out standard leak calibration, value traceability. The system structure is simple, easy to operate, maintenance, high efficiency.
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Engineering case
Today, vacuum technology has become an essential key technology in many high-end process applications. We provide vacuum solutions for users in all industrial fields throughout the country.
Shanghai Institute of Technical Physics, Chinese Academy of Sciences

Shanghai Institute of Technical Physics, Chinese Academy of Sciences

Shanghai Institute of Technical Physics, Chinese Academy of Sciences

Shanghai Institute of Technical Physics, Chinese Academy of Sciences

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Shanghai Dongbei vacuum equipment focused on
Non-standard complete vacuum equipment
Shanghai Dongbei Vacuum Equipment Co., Ltd. was established in 2001, the plant covers an area of 1200 square meters. The company is committed to the development of non-standard complete sets of vacuum equipment, production, sales and service of high-tech enterprises. The company has: helium mass spectrometry leak detection, various numerical control machine tools, ultra-high vacuum heat treatment furnace, electrolytic polishing and other professional equipment, and has a professional vacuum design, senior mechanical, electrical engineer service team, one-stop solution to system problems, to serve customers from a professional point of view. With strong technical research and development capabilities and service team, the company has made a number of scientific research and innovation achievements in the field of extremely high and ultra-high vacuum, non-standard complete sets of vacuum application equipment, leak detection method research, reliability traceability standards, etc. For domestic aviation, aerospace, high-energy physics, colleges and universities and other research institutes to create a series of vacuum, leak rate, material outgassing rate and other high-precision cutting-edge equipment. We have successively undertaken and successfully completed the development of the national vacuum benchmark and the leakage rate benchmark, which has reached the order of 10-10Pa in the extremely high vacuum field, extending the offline of the national measurement benchmark. At the same time developed a VTL5-10 series of channel type standard leak, the product has reached the international advanced level, is the domestic can provide a full range of standard leak custom manufacturers, breaking the foreign monopoly in the field, has been recognized by the relevant experts in the industry.
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Focus on air compressor industry

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Today, vacuum technology has become an essential key technology in many high-end process applications. We provide vacuum solutions for users in all industrial fields throughout the country.

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Concerned about Shanghai Dongbei Vacuum Equipment Co., Ltd., to understand the vacuum equipment industry first-hand information
2024-08-14
Insist on Independent Innovation and Enhance Development Strength
Jiangsu XX Construction Machinery Group Co., Ltd. is one of the leading enterprises in China's competitive construction machinery industry. In the 20 years since its establishment, the group's operating income has gone from 3.X 0.6 billion yuan in 19XX to 40.8 billion yuan in 2008, while its export earnings have gone from US $8.03 million to more than US $0.8 billion. Its sales have been firmly ranked first in the domestic construction machinery industry. In the past three years, the scale of the group has continuously stepped up to 20 billion yuan, 30 billion yuan and 40 billion yuan, achieving a three-year "triple jump". In the recently announced ranking of the top 500 Chinese enterprises in 2009, XX Group ranked XX1, up 1X7 places from the previous year.
2024-08-14
Enter the world's top five planning "12th Five-Year" strategy
Since the reform and opening up, China's equipment manufacturing industry and construction machinery industry has made great progress, especially the emergence and rapid rise of independent brands, further consolidate and establish China's position as a major country in machinery and construction machinery manufacturing, XX is one of the most outstanding representative.
2024-08-14
Into the "China's first science and technology exhibition"
From XX to XX, China International High-tech Fair was held in Shenzhen Convention and Exhibition Center. As a representative enterprise with outstanding innovation performance in the equipment manufacturing industry and an important role in industrial technological progress, XX Group participated in the theme exhibition "Strengthening Independent Innovation and Promoting Industrial Revitalization" at the invitation of the National Development and Reform Commission and other organizers, and the exhibition received remarkable results.
2024-08-14
Hot filament CVD diamond equipment
Shanghai Jiao Tong University and Shanghai Dongbei Vacuum Equipment Co., Ltd. jointly developed new CVD coating equipment. Over the years, our company has produced many hot filament CVD diamond deposition devices, which are spread across many regions of the country and some overseas countries. Its stable performance, high film efficiency, in the domestic get consistent high praise.
2024-08-14
2015 12th International Conference on Vacuum Metallurgy and Surface Engineering
Warmly celebrate the successful holding of the 12th International Conference on Vacuum Metallurgy and Surface Engineering. Wang Jinsuo, general manager/researcher of our company (Shanghai Weitai/Dongbei Vacuum Equipment Co., Ltd.) professional committee member, was invited to attend. This academic exchange will provide an exchange platform for experts and scholars in the fields of vacuum metallurgy, vacuum engineering and technology, and promote the scientific development and application of related fields.
2024-08-13
The 13th International Vacuum Exhibition 2015
From May 6 to 8, 2015, Shanghai Dongbei Vacuum Equipment Co., Ltd. welcomes new and old customers to visit and guide us. Number: D39, you are cordially invited to attend. Venue: Next to the Bird's Nest, Beijing National Conference Center