Based on the theory of Carman and Strouhal, the generate of swirl is related to swirl and flowing rate, LUGB vortex flow sensor is used for flowing rate measurement of steam, gas and low viscosity liquid. As picture shown below, triangle shaped swirl generator fitted in the sensor vertically, when the application flow through the sensor, regular opposite direction Carman swirls generated behind the triangle generator; The segregation frequency F is proportional to the flowing speed V. According to the number of swirl detected by the sensor, the flowing speed of the application can be worked out, so that the flowing rate can be worked out according to the bore size of the sensor pipeline
|
Diameter (mm) |
Liquid (Ref. medium: Water m 3 /h) |
Gas (Ref medium: Air at 20º C 101325Pa, m 3 /h) |
|
Standard |
Extended |
|
15 |
0.8-6 |
0.5-8 |
6-40 |
5-50 |
|
20 |
1-8 |
0.5-12 |
8-50 |
6-60 |
|
25 |
1.5-12 |
0.8-16 |
10-80 |
8-120 |
|
40 |
2.5-30 |
2-40 |
25-200 |
20-300 |
|
50 |
3-50 |
2.5-60 |
30-300 |
25-500 |
|
65 |
5-80 |
4-100 |
50-500 |
40-800 |
|
80 |
8-120 |
6-160 |
80-800 |
60-1, 200 |
|
100 |
12-200 |
8-250 |
120-1, 200 |
100-2, 000 |
|
125 |
20-300 |
12-400 |
160-1, 600 |
150-3, 000 |
|
150 |
30-400 |
18-600 |
250-2, 500 |
200-4, 000 |
|
200 |
50-800 |
30-1, 200 |
400-4, 000 |
350-8, 000 |
|
250 |
80-1, 200 |
40-1, 600 |
600-6, 000 |
500-12, 000 |
|
300 |
100-1, 600 |
60-2, 500 |
1, 000-10, 000 |
600-16, 000 |
|
400 |
200-3, 000 |
120-5, 000 |
1, 600-16, 000 |
1, 000-25, 000 |
|
500 |
300-5, 000 |
200-8, 000 |
2, 500-25, 000 |
1, 600-40, 000 |
|
600 |
500-8, 000 |
300-10, 000 |
4, 000-40, 000 |
2, 500-60, 000 |
Shenyang North Star Instrument Manufacturing Co., Ltd was founded in August of 1995. It is located at Shenyang Economic & Technological Development Zone and covers an area of 18, 000m2. The Company is specialized in manufacturing the flow & level measuring instruments, chemical glass products, chemical glass pipes and special glass apparatus, meanwhile it also acts as agent to sell series mechanical & electrical products, pressure instruments, chemical reagents, chemical materials, laboratory apparatus & science equipment, contracts to design the instrument and meter engineering, chemical industry pipeline & laboratory auxiliary projects, and processes on giving materials & mechanical manufacturing etc.
The company has the advanced production and testing equipment in China. It is the designated testing company for National Institute of Metrology of Liaoning Province. More than 180 staff (in which one is the national level engineer and 95 are senior & intermediate technical staff) of the company has been constantly dedicating to the technological development and manufacture of the flow & level measuring instruments and equipment manufacturing industry. On the principle of seeking technological innovation and development, the company has obtained the technological achievements of 1 patent of invention and 8 utility & new model patents over the years and has made the company better fit in the development and demands of the market.
The products of the company have been sold to the whole country and part of the Southeast Asia. The company has set up sales subsidiary companies in Jinan, Chongqing, Lanzhou and Xi'an etc. Cities and licensing agents in other places in China to provide excellent products and good after-sale services for the customers across the country.
The company has been strictly following the requirements of the ISO9001: 2000 Quality Management System over the years. In line with the purpose of technological innovation, quality orientation, superior products and satisfactory service, relying on the self-owned patented technology, strong research and development capability, good market reputation and well-developed sales network, the company has been constantly building the product brand and has been the supporting enterprise of the chemical industry, pharmacy, food, mine safety and the equipment manufacturing industries all the year round.
