Ore level gauge

Overview of guided wave radar level gauge products for ore silos
Radar level gauge - guided wave radar level gauge for ore silos is a measuring instrument based on the principle of time travel. Radar waves travel at the speed of light, and their travel time can be converted into level signals through electronic components. The sensor emits pulses and conducts them along a cable or pole. When the pulse wave encounters the surface of the material, it is reflected back and received by the receiver inside the instrument, which converts the distance signal into a level signal.

Manufacturer's price:

price	¥ 480.00~70000.00 yuan
Starting from batch	≥1 tower

Specification parameters:

Customized processing	correct	brand	Vauen	model	XYRD800
type	Intelligent radar level meter	measuring range	0-30	measurement accuracy	± 3mm
current signal	4-20（mA）	power supply	24

Input of guided wave radar level gauge for ore silo
The reflected pulse signal is transmitted along the cable or pole to the electronic circuit of the instrument, and the microprocessor processes the signal to identify the echo generated by the microwave pulse on the surface of the material. The correct recognition of echo signals is completed by intelligent software, and the distance D from the material surface is proportional to the time travel T of the pulse: D=C × T/2, where C is the speed of light. Since the distance E of the empty tank is known, the material level L is L=E-D

Output of guided wave radar level gauge in ore silo
By inputting the empty tank height E (=zero), full tank height F (=full range), and some application parameters to set, the application parameters will automatically adapt the instrument to the measurement environment. Corresponding to 4-20mA output.
1.2 Measurement Range
F - Measurement Range
E - Empty tank distance
B - Top blind spot
K - Small distance from probe to tank wall
The top blind spot refers to the small distance between the high material surface of the material and the measurement reference point.
The bottom blind spot refers to a distance near the bottom of the cable that cannot be measured.
The effective measurement distance is between the top blind spot and the bottom blind spot.
be careful:
Only when the material is located between the top blind spot and the bottom blind spot can reliable measurement of the tank level be ensured.

Product introduction of guided wave radar level gauge for ore silo:
Application: Liquid, Solid Powder
Measurement range: 30 meters
Process link: flange
Process temperature: -40~250 ℃
Process pressure: -0.1~2Mpa
Accuracy: ± 3mm
Frequency range: 100MHz to 1.8GHz
Explosion proof/protection level Exib IIC T6 Gb/IP67
Signal output: 4-20mA/HART
installation guide
The following installation guidelines apply to cable and rod probes for measuring solid powders and liquid objects. Coaxial tube probes are only suitable for liquid objects.
Installation location:
Try to stay away from the discharge and feed ports as much as possible.
For metal and plastic cans, they should not collide with walls throughout the entire range. If it is a metal tank, do not install the level gauge in the center of the tank.
It is recommended to install it at 1/4 of the diameter of the silo.
The distance between the cable probe or pole probe and the tank wall should not be less than 300mm, and it is recommended to be greater than or equal to 500mm.
The bottom of the probe is approximately 30mm away from the bottom of the tank.
The distance between the probe and the obstacle in the tank should not be less than 200mm.
If the bottom of the container is conical, the sensor can be installed in the center of the tank top, so that it can measure all the way to the bottom of the tank.

The following figure is the installation diagram of the pole type radar, mainly used for liquid level measurement.
Can measure any medium with a dielectric constant greater than or equal to 1.9.
Generally used for measuring media with viscosity ≤ 500cst and not prone to adhesion.
The pole type radar can reach a large range of up to 6 meters.
● It has strong inhibition ability to steam and foam, and the measurement is not affected.

The following figure shows the installation diagram of coaxial tube radar, mainly used for measuring liquid level.
Liquid materials with relatively low dielectric constants can be measured using coaxial tube measurement to ensure accurate measurement.
Can measure any medium with a dielectric constant greater than or equal to 1.6.
Generally used for measuring viscosity ≤ 500cst and not prone to sticking
Attached media.
Coaxial tube radar can reach a large range of up to 6 meters.
● It has strong inhibition ability to steam and foam, and the measurement is not affected.

installation
Reasonable installation can ensure long-term reliable measurement of instruments.
The instrument can be connected with threads, and the height of the threaded installation pipe should not exceed 100mm. It can also be installed on a short pipe. If the diameter of the short pipe is between 2 "and 6", the height of the short pipe should be ≤ 100mm. If it is installed on a longer short pipe, a cable probe should be fixed at the bottom or a centering bracket should be selected to avoid contact with the end of the short pipe.

Installation of DN200 or DN250 inside short pipes
When the instrument needs to be installed on a short tube with a diameter greater than 200mm, echoes are generated on the inner wall of the short tube, which can cause measurement errors when the dielectric constant of the medium is low. Therefore, for a short pipe with a diameter of 200mm or 250mm, a special flange with a "horn interface" needs to be selected.

● Install on plastic cans
be careful!
Whether it is cable or pole type, in order for the instrument to work properly, the process connection surface should be made of metal. When the instrument is installed on a plastic can, if the top of the can is also made of plastic or other non-conductive material, the instrument needs to be equipped with a metal flange. If threaded connection is used, a metal plate needs to be equipped.

measuring principle

The VIVO2042 intelligent radar level gauge emits extremely short microwave pulses with low energy, which are transmitted and received through the antenna system. Radar waves travel at the speed of light, and their travel time can be converted into level signals through electronic components. A special time extension method can ensure stable and accurate measurements in a very short period of time. Even in complex working conditions with false echoes, the use of * * * new microprocessing technology and debugging software can accurately analyze the echoes of the material level.

Technical parameters:
Parameters: Operating frequency: 100MHZ-1.8GHZ
Measurement range: Cable type: 0-30m; Rod type and coaxial tube type: 0-6m;
Repeatability: ± 2mm
Resolution: 1mm
Sampling: Echo sampling 55 times/s
Response speed:>0.2S (depending on specific usage)
Output current signal: 4-20mA
Accuracy: ± 3mm
Communication interface: HART communication protocol
Process connection: G1 "A/G1?" A thread
Flanges DN50, DN80, DN100, DN150, DN200, DN250
Process pressure: -0.1-2MPa
Power Supply: 24VDC (± 10%), Ripple Voltage: 1Vpp
Power consumption: Max 22.5mA
Environmental conditions: Temperature range of -40 ℃ to+70 ℃
Shell protection level: IP67
Explosion proof rating: EXib IIC T6 Gb
Two wire wiring: The instrument power supply and signal output share a two core shielded cable

Cable entry: 2 M20 * 1.5 or? NPT (cable diameter 5-9mm)


Advantages and Applications1Radar level gauge can measure liquidsSolid media such ascrudeslurryraw coalpulverized coalVolatile liquids, etc2It can measure all media with a constant greater than 1.8 in vacuumThe measurement range can reach 35m3The power supply and output signal are transmitted through a two core cableloop circuit, using 4... 20mA output or digital signal output4Non contact measurement is easy to install and uses extremely stable materials that are sturdy and durableReliable resolution up to 1mm5Not affected by noisesteamdustImpact of vacuum and other working conditions6Not affected by changes in medium density and temperatureThe process pressure can reach 40 bar, and the medium temperature can reach 300 ℃7There are multiple installation methods to choose fromTop installationside mountInstallation of bypass pipeInstallation of waveguide tube8Debugging can be done in multiple waysDebugging using programming modulesEquivalent to an analytical and processing instrumentSOFT software debuggingDebugging of HART handheld programmerDebugging is convenient and fast