⎝⎛星力捕鱼⎞⎠

⎝⎛星力捕鱼⎞⎠ page Company Profile ⎝⎛星力捕鱼⎞⎠ Product center Quality system marketing network After sales service Recruitment contact us
Flow meter series
Temperature instrument series
Pressure instrument series
Calibration instrument series
Level instrument series
Digital display instrument series
Transmitter instrument series
Wire and cable series
Bridge instrument cabinet series
Pipe fitting valve series

Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
0517-86900921
0517-86900920
Fax: 0517-86900902
Postcode: 211600
http://zzyfwh.com
Email: chinadongxiang@163.com
Industry Information
Guided wave radar is a microwave level gauge
2012-2-4 9:22:40

Guided wave radar level gauge is a microwave level gauge, which is an application of microwave (radar) positioning technology. It transmits energy waves through a device that can emit energy waves (generally pulse signals). The energy waves are in a waveguide.

During transmission, the energy wave is reflected by an obstacle. The reflected energy wave is transmitted to the receiving device by the waveguide, and then the receiving device receives the reflected signal. The change in level is determined according to the time difference of the measured energy wave motion process. By electron

The device processes the microwave signal and finally converts it into an electrical signal related to the level. The energy radiation level is low. The energy wave used by this device is a pulsed energy wave (the frequency is generally lower than that of a smart radar level meter). General pulse energy wave

The maximum pulse energy is about 1mW (average power is about 1μW), which will not cause radiation damage to other equipment and personnel.

Main characteristics of guided wave radar level meter:

是金湖东祥仪表公司,采用先进的非接触式测量,极其稳定的材料制造。 The guided wave radar level gauge is manufactured by Jinhu Dongxiang Instrument Co., Ltd. It uses advanced non-contact measurement and extremely stable materials. For measuring the level of liquid and solid media. Guided wave radar level meter adopts two-wire system and loop

Power supply technology. The power supply voltage and output signal are transmitted through a two-core cable. It is not affected by noise, steam, dust, vacuum and other working conditions, and is not affected by changes in medium density, viscosity, and temperature. It can be used in storage tanks, in

Level measurement in buffer tanks or process vessels.

Guided wave radar level gauge measurement principle and application:

Guided wave radar level gauge is applied to the measurement of liquid, powder and solid particles. It is a measuring instrument based on the principle of time travel. The radar wave runs at the speed of light, and the running time can be converted into a level signal by electronic components. Probe issued

The high-frequency pulse is transmitted along the cable or rod probe. When the pulse meets the surface of the material, it is reflected back and received by the receiver in the meter, and the distance signal is converted into a level signal as a principle.

In order to compensate for these shortcomings of pulse radar level gauges, guided wave radar level instruments have emerged at the historic moment. The working principle of guided wave radars is very similar to conventional radars that propagate electromagnetic waves through space. The basis of guided radar level gauges is electromagnetic

Time Domain RefectoryTDR principle of waves, using this principle to find broken ends of buried cables and buried high cables in the wall. When measuring cable breaks, the electromagnetic pulse signal from the TDR generator follows the cable.

Propagation, when encountering a broken head, a measurement reflection pulse will be generated; at the same time, the impedance change corresponding to the total cable length preset in the receiver also triggers a basic pulse. Comparing the reflection pulse with the basic pulse,

Measure the position of the broken end accurately. When applying this principle to level measurement, microwave pulses do not propagate in space, but propagate through one (or two) guided wave bodies extending from the top of the tank to the bottom of the tank. Waveguide can be a hard metal rod

Or flexible metal cables. The TDR generator generates about 200,000 energy pulses per second. When these pulses encounter the contact between the waveguide and the surface of the liquid, the conductive properties of the waveguide in the gas and in the liquid are very different.

Such a change in the conductivity of the waveguide body causes a sudden change in the impedance of the waveguide body, thereby generating a liquid level reflection of the original pulse, and at the same time has a preset impedance on the top of the waveguide body, which creates a reliable base

This pulse is also called the baseline reflection pulse. 检测到液位反射原始脉冲,并与基线反射脉冲相比较,从而计算出介质的液位高度,由于高导电性介质液位产 The radar level gauge detects the original pulse reflected by the liquid level and compares it with the baseline reflected pulse to calculate the liquid level height.

Strong reflection pulses, while low-conductivity media produces weaker reflections. The low-conductivity medium allows some electromagnetic waves to continue to propagate down the waveguide through the liquid surface until it completely disappears or is replaced by a higher-conductivity medium

Reflected back, you can use guided radar to measure the two liquid interfaces (such as oil / water interface, etc.), as long as the dielectric constant of the liquid under the interface is much higher than the dielectric constant of the liquid on the interface.


是基于时间行程原理的测量仪表,雷达波以光速运行,运行时间可以通过电子部件被转换成物位信号。 The DEC-LEDC guided wave radar level gauge is a measuring instrument based on the principle of time travel. The radar wave runs at the speed of light, and the running time can be converted into a level signal by electronic components.

Application: liquid, powder, solid particles


Measuring range: 30 meters


Process connection: thread, flange


Process temperature: -40-250 °


Process pressure: -1.0-20bar


Accuracy: <0.1%


Frequency range: 100MHZ-1.8GHZ


Protection level: ExiaⅡC T6 / IP67


Signal output: 4-20mA / HART (two wires)


DEC-LEDC2 Guided Wave Radar Level Gauge


Application: liquid, powder, solid particles


Measuring range: 6 meters


Process connection: thread, flange


Process temperature: -40-250 °


Process pressure: -1.0-20bar


Accuracy: <0.1%


Frequency range: 100MHZ-1.8GHZ


Protection level: ExiaⅡC T6 / IP67


Signal output: 4-20mA / HART (two wires)


DEC-LEDC3 Guided Wave Radar Level Gauge

Application: liquid, powder, solid particles


Measuring range: 6 meters


Process connection: thread, flange


Process temperature: -40-250 °


Process pressure: -1.0-20bar


Accuracy: <0.1%


Frequency range: 100MHZ-1.8GHZ


Protection level: ExiaⅡC T6 / IP67


Signal output: 4-20mA / HART (two wires)

The probe sends out high-frequency pulses and conducts them along the cable and rod probes. When the pulses meet the surface of the material, they are reflected back by the receiver in the meter and the distance signal is converted into a level signal.

a brief introdction


是基于时间行程原理的测量仪表,雷达波以光速运行,运行时间可以通过电子部件被转换成物位信号。 Guided wave radar level gauge is a measuring instrument based on the principle of time travel. Radar waves run at the speed of light, and the running time can be converted into level signals by electronic components. The probe emits high-frequency pulses and travels along the cable,

When the pulse hits the surface of the material, it is reflected back and received by the receiver in the meter, and the distance signal is converted into a level signal.


Detailed introduction of guided wave radar level gauge


Guided wave radar level gauge measurement principle

Guided wave radar is a measuring instrument based on the principle of time travel. The radar wave runs at the speed of light, and the running time can be converted into a level signal by electronic components. The probe emits high-frequency pulses and propagates along the cable. When the pulses meet the material

When the surface is reflected, it is received by the receiver in the meter, and the distance signal is converted into a level signal.