Guided Wave Radar Level Transmitters | GWR Product List
Guided wave radar level transmitters are level measuring instruments based on the time travel principle. The probe emits high-frequency pulses that propagate along the cable or rod probe. When the pulse encounters the surface of the material, it is reflected back and is received by the receiver in the instrument, which converts the distance signal into a level signal.
The transmission of microwave signals is not affected by the atmosphere, so it can meet the requirements of harsh environments such as volatile gases, high temperatures, high pressures, steam, vacuum and high dust during the process. This product is suitable for harsh environments such as high temperature, high pressure, vacuum, steam, high dust and volatile gases. Can continuously measure different material levels.
guided wave radar level transmitter | GWR product list
Adopts advanced microprocessor and unique Echo Discovery echo processing technology;
Various process connection methods and detection component types. Suitable for various complex working conditions and applications. Such as: high temperature, high pressure and small dielectric constant media, etc.;
Using pulse working mode, the guided wave radar level meter has extremely low transmitting power. Can be installed in various metal and non-metal containers, without harming the human body or the environment;
Two-wire technology is an excellent alternative to differential pressure instruments, magnetostriction, radio frequency admittance, and magnetic flip instruments;
Not affected by pressure changes, temperature changes, inert gases, vacuum, smoke, steam and other environmental influences;
Easy to install, sturdy and durable, maintenance-free;
HART or PROFIBUS-PA communication protocol and Fund fieldbus protocol are easy to calibrate, and on-site calibration operations can be easily realized through the digital LCD display. Simple configuration setting and programming can be realized through the software GDPF;
Sensitive measurement and fast refresh speed;
Suitable for high temperature working conditions, the highest temperature can be customized -200~400℃.
Featured Guided Wave Radar Level Transmitters Models and Technical Parameters
Power supply: two-wire system (DC24V)/four-wire system (DC24V/AC220V);
Shell: aluminum single cavity/aluminum double cavity/plastic/stainless steel single cavity;
Process connection: thread/flange (optional);
guided wave radar level transmitter working principle
Guided wave radar is a measuring instrument based on the time travel principle. Radar waves run at the speed of light, and the running time can be converted into level signals through electronic components.
The probe emits a high-frequency pulse and propagates along the cable or rod probe. When the pulse encounters the material surface, it is reflected back and is received by the receiver in the instrument, and the distance signal is converted into a level signal.
The reflected pulse signal is transmitted along the cable or rod probe to the electronic circuit part of the instrument. The microprocessor processes the signal and identifies the echo generated by the microwave pulse on the material surface.
Correct echo signal identification is done by the pulse software. The distance D from the material surface is proportional to the pulse time T:
D=C×T/2
Where C is the speed of light. Since the distance E of the empty tank is known, the level L is: L=E-D
Set by inputting the empty tank height E (= zero point), the full tank height F (= full scale) and some application parameters. The application parameters will automatically adapt the instrument to the measurement environment, corresponding to 4-20mA output.
Measuring range:
illustrate: H—-Measurement range L—-empty tank distance B—-Top blind area E—-Minimum distance from probe to tank wall
The top blind zone refers to the minimum distance between the highest surface of the material and the measurement reference point. The bottom dead zone is a distance near the very bottom of a cable that cannot be accurately measured. The effective measurement distance is between the top blind zone and the bottom blind zone.
Notice: Only materials are in the top blind zone and bottom blind zone can ensure the reliability of the content level in the tank. Measurement.
The guided wave radar level transmitter on the market can measure almost any liquid with a dielectric constant greater than 1.6.
But if the liquid medium is less than 1.6, what should we do if we need to use a guided wave radar radar level meter for liquid level measurement?
At present, the most effective method is to install a waveguide.
However, this method has certain limitations. That is, the dielectric constant of the liquid medium must be greater than 1.3, the viscosity should be less than or equal to 500cst, and it is not prone to adhesion.
guided wave radar level transmitter applications
The guided wave radar level transmitter has a wide range of applications due to its high accuracy, fast response speed, and good reliability. Common liquid level measurement application scenarios are as follows:
Petrochemical industry: such as storage tanks, reactors, papermaking machinery, etc.;
Food industry: such as syrup storage tanks, baking ovens, muffin tins, etc.;
Sewage treatment industry: such as sewage tanks, sedimentation tanks, regulating tanks, reverse osmosis equipment, etc.;
Electric power industry: such as reservoirs, large oil tanks, etc.
guided wave radar level transmitter calibration
There are 3 calibration methods for guided wave radar level transmitter:
Display/debug module (View Point)
PC debugging software
HART handheld programmer
View Point is a pluggable display debugging tool. The instrument can be debugged through the 4 buttons on the View Point. The language of the debug menu is selectable. After debugging, it is usually only used for display, and the measured values can be read very clearly through the glass window.
Connected to the host computer via HART
① RS232 interface/or USB interface ②Radar level meter ③HART adapter ④ 250Ω resistor
①HART handheld programmer ②Radar level meter ③250Ω resistor
For more about guided wave radar level transmitter installation and troubleshooting, please continue reading our blog.
The guided wave radar level transmitter has the advantages of high precision, fast response speed, and good reliability. It is widely used in liquid level monitoring in various fields such as petrochemical, food, and sewage treatment.
The guided wave radar level transmitters supplied by us at Sino-Inst are widely exported to various countries, with Best price! The measurement effect is stable. Of course, we also have other types of level transmitters, including radar level meters, ultrasonic level meters, hydrostatic level meters, float level controllers, etc.
If you need to purchase guided wave radar level transmitters, or have related customization needs, please feel free to contact us!
Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.
Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.
Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.
Guided Wave Radar Level Transmitters | GWR Product List
Guided wave radar level transmitters are level measuring instruments based on the time travel principle. The probe emits high-frequency pulses that propagate along the cable or rod probe. When the pulse encounters the surface of the material, it is reflected back and is received by the receiver in the instrument, which converts the distance signal into a level signal.
