HOTLINE 0086-29-88606479
  Tel: 86-29-88606479   E-mail: sales@dechuang-auto.com

NEWS

About us

How to prevent corrosion, shock and dust in the use of radar level transmitter

DATE: 2019-04-17
BROWSE TIMES: 6


How to prevent corrosion, shock and dust in the use of radar level transmitter

The radar level transmitter is an indispensable monitoring device. On one hand, the level transmitter can play the role of maintaining the smooth operation of the chemical production line, and on the other hand, it plays the role of life and property safety protection. For field instruments In terms of long-term exposure, the sun and rain, the instrument is prone to failure, then we need to do the instrument's anti-seat, anti-shock and dust-proof work, plus strengthen the management and maintenance of the instrument can not only improve the accuracy of the instrument can also extend the service life of the instrument. Here is how the field instrument is anti-corrosion, shockproof and dust-proof!


Anti-corrosion maintenance of field instruments

1.the choice of materials

Targeted selection of corrosion-resistant metal or non-metallic materials to manufacture parts of the instrument is the fundamental method for industrial instrumentation to prevent erosion. For example, titanium-like, metal-like parts are very strong for chlorine chemical media.

Corrosion resistance; instrument parts and gaskets made of poly tetra ethylene material are also widely used in various corrosive media environments.

2.the insurance layer

The formation of a protective layer on instrument parts or components is a common anti-corrosion method in the industry. According to the material of the protective layer and the forming principle, it can be divided into the following three types.

Metal barrier protection layer. Including spraying, plating, hot dip, car burizing, etc.

Non-metallic protective layer. Such as paint, acid-resistant cement, rubber, plastic, concrete, etc.

A non-metallic protective film is chemically treated on a metal surface to form a protective film such as an oxide film or a phosphate film;

3.Use spacer

This is an effective way to prevent skincare media from coming into direct contact with the meter. When it is not possible to select a suitable corrosion-resistant meter, the isolation solution can be used for isolation. Isolation fluid is often used for pressure and flow in corrosive media volume, level measurement. The spacer fluid must not be mutually soluble and chemically affected by the measured medium, nor can it be corrosive to the meter measuring components. The density of the spacer should be different with respect to the medium being tested and the working medium of the meter

It is vacant, and its density and viscosity should not change significantly when the ambient temperature changes; it should also have good fluidity. In case of accident, when the spacer fluid is mixed into the measuring pipeline, it should not be affected.

Measure the use of the media. For example, glycerin aqueous solution is suitable for oily beauty, water gas, semi-water gas, C1, C2 and other hydrocarbons; ethanol is suitable for propane, butane and other media; methyl silicone oil is suitable for dehumidification chlorine gas.

Gas and liquid.

4.diaphragm isolation

Corrosion-resistant diaphragms are used to isolate the spacer or filling fluid from the measured medium for corrosion protection purposes. It is suitable for highly corrosive media, difficult to use in-tube isolation or container isolation, usually suitable for

Pressure measurement, no differential pressure measurement is declared. The isolating diaphragm should be elastic and impervious, such as the commonly used diaphragm pressure gauge, single flange anti-corrosion pressure transmitter and so on.

5. blowing method

This is to use the blown air (or inert gas such as nitrogen) to isolate the measured medium from the surface of the meter measuring component. The air blowing method is usually used for a liquid pressure measuring system of normal pressure or low pressure, and the blowing gas should not be corroded.

The measured medium acts. According to the principle of constant pressure of the blowing method, the blowing liquid (clean liquid such as water) method is also applied in the flow rate and liquid level measuring system. For example, blowing steam condensate to isolate the medium to the instrument

The table measures the corrosion of the components and eliminates the blockage of the pressure guiding tubes.


Dust maintenance of field instruments

The dust proof method on the outside of the instrument is to protect the instrument or put it in the sealed box.

For the protection of dust, impurities and particles in the tested medium, in addition to measures to prevent clogging by measures such as reducing dust, it is usually used to thicken the ingestion tube, add a dust collector, add a blower and add protection.

Screen protection and other methods.

The crude extraction tube is often used in combination with a dust collector and a purging device. When measuring the flow rate using an orifice plate without a ring chamber, you can directly use a 1.5 to 2 m thick ingestion tube at the pressure tap and add a plug to facilitate the repair.

Clean the holes or use them as a vent. In the liquid level measurement, in order to prevent crystallization in the negative pressure tube, a vacuum condensate may be used for the negative pressure tube. For gas measurement of moisture, water separators can be used

This is common in pressure and flow measurements.


Share to
RELATED NEWS / News More
  • Number of clicks: 0
    2019 - 11 - 11
    The 4th Petroleum and Chemical Instrument Control Technology Conference and China Mechatronics Technology Application Association Petrochemical Smart Factory Sub-standardization Working Committee was established by China Mechatronics Technology Application Association and Dandong Tongbo Electric (Group) Co., Ltd. It was held in Dandong, Liaoning province from November 7th to 9th.As the industry authority of the national brand, China Mechatronics Technology Application Association carries many important intelligences of industrial modernization in China and even in the world. In this meeting, experts from all over the country took the development of industrial control system safety and chemical automation instrument technology as the theme, and comprehensively demonstrated new products and ...
  • Number of clicks: 0
    2019 - 11 - 04
    Tips on Model Selection of Radar Liquid Level Meter  -Guided wave radar  and 26GHz radar level meterWhen we select the suitable model of radar level meter, below attentions should be paid on mixing, vacuumizing, power supply and output signal during model selection of radar liquid level meter.I. Model selection on mixing(stirring)Guided wave radar can not be used in mixing tank because mixing strength apt to bring rope into propeller or stretch the rod-type guided wave radar, non-contact measurement high frequency or low frequency horn radar is selected.If the lowest liquid level exceeds the mixing propeller, measurement is not be impacted. If the lowest liquid level is below the the mixing propeller, it should study the fake echo to filter the signal reflected by propeller ...
  • Number of clicks: 1
    2019 - 10 - 30
    DCRD1000A4 bulk solid/Solid particles/Solid powders level measuring sensorThis radar level transmitter uses a parabolic antenna with an emission angle of only 4 degrees.For a variety of complex conditions, especially the measurement of a large range of solid materials.The antenna is parabolic, so it is not easy to accumulate dust, which is very suitable for heavy dust conditions.There is a special working condition, the customer requires this section to also have a air purging device. Our technical department has researched and developed a purging device, as shown below. Since its operation, the effect are very good and has been recognized and praised by customers.
  • Number of clicks: 0
    2019 - 10 - 23
    China ***Group Co., Ltd. is a large-scale enterprise with coal production and operation as its main business, railway transportation and coal-to-liquid production as its extension, and non-coal industry development such as bio-pharmaceutical, bentonite, real estate and hotels. The company is a top 500 Chinese company and a national top 100 coal company (23rd). This year, the 120Ghz FMCW radar level transmitter was successfully applied to the group's measurement of the stone powder level. The measurement conditions with heavy dusty and high temperature, but our products have achieved excellent measurement results and have been recognized by on-site specialists . This truly confirms the words 'good products can speak', even in the absence of any sales, as long as the prod...
  • Number of clicks: 7
    2019 - 09 - 30
    Wind and rain, the years are like songs                                                               70 years of thorns, 70 years of wind and rain                                                               We are proud of you, our great motherland,                                                               We ar...
Email:sales@dechuang-auto.com
Adress:
Tel:86-29 88606479
Fax: 86-29 88385903
B203, Gazelle Valley, No.69 Jinye Rd, Hi-tech zone, Xi'an, Shaanxi Province, P.R.China. 710077
Copyright ©2018 - 2019 Dechuang Electrical Technology Co., Ltd SITEMAP
Rhino Cloud Provides Enterprise Cloud Services
犀牛云提供云计算服务