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Application of Radar Level Gauge in Tank Level Measurement in Petrochemical Tank Farm

DATE: 2020-08-25
BROWSE TIMES: 184

Application of Radar Level Gauge in Tank Level Measurement in Petrochemical Tank Farm


1. In recent years, the production of my country's petrochemical industry has been generally stable, market supply and demand have been stable, major economic indicators have grown better than expected, and the overall benefits of the industry have continued to be in a good situation. As petrochemical projects become more and more large-scale, the number and scale of storage and transportation tank farms have shown an upward trend in recent years, and the scale and capacity of single storage tanks are also increasing, from tank farm engineering design to daily routine Safety management has brought new challenges to petrochemical companies.

The petrochemical tank farm has the characteristics of large-scale facilities, various types, and many flammable, explosive and toxic media. As one of the liquid level measuring instruments in the tank farm, the radar level gauge can transmit electromagnetic waves in a vacuum without transmission media. Unaffected by steam and medium volatilization, it has been widely used in the petrochemical industry in recent years.

Application of Radar Level Gauge in Tank Level Measurement in Petrochemical Tank Farm

2. Introduction of radar level gauge

2.1 The working principle of radar level gauge

Transmitting-reflection-receiving is the basic working principle of radar level gauges. The existing radar level gauges have two measurement methods, one is frequency-modulated continuous wave type and the other is pulse type. FM continuous wave is used for signal analysis in the frequency domain, and pulsed type is used for signal analysis in the time domain. Compared with the two phases, the accuracy of the FM continuous wave is higher.

Application of Radar Level Gauge in Tank Level Measurement in Petrochemical Tank Farm

2.2 Measurement characteristics of radar level gauge

2.2.1 Wide measurement range

The beam emitted by the radar level gauge can be transmitted in vacuum without a transmission medium. It can measure almost all media, whether liquid or solid, toxic or corrosive media, and various complex working conditions such as high temperature and high pressure, steam, high dust, Slurry, stirring, etc. can be measured.

2.2.2 High measurement accuracy

The beam angle is small and the energy is concentrated, which not only enhances the echo ability, but also helps avoid interference. The non-contact radar has no contact with the medium in the tank, and can accurately measure the liquid level of different media.

2.2.3 High measurement accuracy

According to the different launch frequency and launch angle of the radar level gauge, its measurement accuracy can reach ±5mm, ±3mm respectively, and the accuracy of Detron 120G FM radar level gauge can reach ±1mm.

2.2.4 Safety and energy saving

The microwave emission power is very small and can be electrostatically shielded by the outer wall of the metal container, so it can be used in various occasions without any restriction, and it is harmless to the human body.

2.2.5 Wide application range

In terms of the shape of the tank, the radar level gauge can measure the liquid level of cylindrical tanks, spherical tanks, horizontal tanks, cylindrical cones, etc.; in terms of tank functions, it can measure the liquid level of storage tanks, buffer tanks, and microwaves. The liquid level in the pipe and the bypass pipe is measured.

3. Application of radar level gauge

According to the measurement method, the radar level gauge can be divided into: guided wave radar level gauge (contact type), high frequency radar level gauge (non-contact type), frequency modulated continuous wave radar level gauge (non-contact type)

According to the antenna form, it can be divided into: rod/cable antenna, cone (horn type) antenna, parabolic antenna, lens antenna.

Different media and different working conditions correspond to different selections. The correct selection can achieve the best measurement results.

Application of Radar Level Gauge in Tank Level Measurement in Petrochemical Tank Farm


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