A detailed introduction of the advantages of high-frequency radar level gauges in the field of application


With the vigorous development of the instrument and meter industry, relying on the constant trend of the international market instrumentation to the digital background, the development of digitalization, intelligence, networking and miniaturization, the domestic technology level is also constantly improving, and the development trend is obvious. . The instrumentation industry has formed a complete set of instrumentation production, research and marketing systems from scratch, from small to large.
As a company with the ability to produce R&D, Shanghai Automation Instrument Co., Ltd. has independently developed the 26G radar level gauge, which has gradually become the mainstream product in the market. Compared with the 6.3G radar level gauge, what are the obvious advantages of the 26G HF radar level gauge in the application field? The following compares the 26G radar level gauge with the 6.3G radar level gauge: 1. The 26G high-frequency radar level gauge has the advantages of high energy, small beam angle, small antenna size and high precision. 2. The electromagnetic wave emitted by the 26 GHz radar level gauge has a wavelength of 11 mm, and the electromagnetic wave emitted by the 6.3 GHz radar level gauge has a wavelength of 50 mm. When the radar level gauge measures the bulk level, the radar wave reflection mainly comes from the diffuse reflection of the material surface. The intensity of the diffuse reflection is proportional to the material size and inversely proportional to the wavelength, and most of the bulk material diameter is much smaller than 50mm. The current 26GHz radar is the best choice for measuring the level of bulk materials. 3. In some small-sized tanks with small diameters and low heights, the 6.3 GHz radar antenna length (300-400 mm) invisibly increases the dead zone (about 600 mm), and the 6.3 GHz radar has poor directivity (beam angle). Large) multipath reflections are produced in small tanks; the 26 GHz radar has high frequency, short antenna and good directionality, which overcomes the shortcomings of the 6.3 GHz radar and is more suitable for small tank measurement. 4, due to the harsh environment, as time goes by, the radar antenna will accumulate dirt, water vapor, etc., 26GHz radar antenna is small, additional radome can greatly improve the impact of dirt and water vapor; 6.3GHz radar antenna is large, plus radome Very difficult. And the instrument is heavy and difficult to clean. 5, because the 26GHz radar has good directivity, in many bad conditions, the radar level gauge can be installed outside the container for measurement by simple isolation.
The above is a detailed introduction and answer about some obvious advantages of the 26G HF radar level gauge in the application field. I hope that the new and old customers can know more about this product. Of course, if you have any questions about the 26G radar level gauge or would like to know more information, please consult online and we will be happy to help you.

Related website:
Shanghai Automation Instrumentation No. 3 Factory: http://
Shanghai Self-Fourth Factory: http://

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In Petro and chemical industry for flange connections Stud Bolts and Hex Bolts are used. 


The quantity of bolts for a flange connection will be given by the number of bolt holes in a flange, diameter and length of bolts is dependent of flange type and Pressure Class of flange.

Stud Bolt length are defined in Asme B16.5 standard. The length in inches is equal to the effective thread length measured parallel to the axis, from the first to the first thread without the chamfers (points). First thread is defined as the intersection of the major diameter of the thread with the base of the point.




1)  Standards: 

Based on DIN  & ANSI   & JIS & IFI

and per drwing

2) Material:   carbon steel, alloy steel, stainless steel
3) bolt  Size:  M4-M42,3/8"--7/8"
4) bolt  Surface: Plain,Zinc ,HDG,DAC,Geomet
5) bolt Thread: UNC, UNF, Metric Thread
6) bolt Quality control : ISO 9001
7) bolt Package : Small box ,Poly Bag,Carton+Pallet

Grades of Stud Bolts

Below a table with materials and grades for flanges, thread rods (bolts) and nuts, arranged on design temperature, flanges, thread rods and recommended nuts.

DESIGN
TEMP.
FLANGES GRADE
THREAD RODS
GRADE
NUTS
-195° to 102°C ASTM A182
Gr. F304, F304L, F316,
F316L, F321, F347
A320 Gr.B8 Class2 A194 Gr.8A
-101° to -47°C ASTM A350
Gr.LF3
A320 Gr.L7 A194 Gr.7
-46° to -30°C ASTM A350
Gr.LF2
A320 Gr.L7 A194 Gr.7
-29° to 427°C ASTM A105 A193 Gr.B7 A194 Gr.2H
428° to 537°C ASTM A182
Gr.F11, F22
A193 Gr.B16 A194 Gr.2H
538° to 648°C ASTM A182
Gr.F11, F22
A193 Gr.B8 Class1 A194 Gr.8A
649° to 815°C ASTM A182
Gr. F304H, F316H
A193 Gr.B8 Class1 A194 Gr.8A
DESIGN
TEMP.
FLG'S GRADE
THREAD RODS
GRADE
NUTS




Bolts & Nuts

Stud Bolts, Heavy Nuts, Stud Bolts With 2 Nuts, Hex Bolts, 2H HDG Nuts, Galvanized Bolts and Nuts

Shijiazhuang Bang dong Pipeline Technology Co,Ltd. , https://www.bd-pipefitting.com