Can marine fuel blending and storage tanks be measured with radar level gauges?

Avoid it if there is a rotating stirrer.

Avoid it if there is a rotating stirrer.

Marine fuel is usually diesel, so the radar should be fine.

The density changes are too large; there is constant adjustment, so the pressure can’t be measured accurately. How about guided wave radar?

Is the storage tank on the ship 18 meters tall? These media of yours should all belong to Category B materials with a low dielectric constant; this is the main factor taken into account by radar systems. Ignore whatever claims are made by certain radar manufacturers regarding their ability to measure distances of so and so many meters – those measurements are valid only in a vacuum environment. For media like yours, the imported E+H radars I sell can measure up to 30 meters, and only when the interface remains stable. They work very well for tanks on land; I’ve had no problems selling them for use in tank areas. But on a ship, where the ship moves around due to wind and waves, the interface becomes unstable, the echo signals weaken, and as a result, the effective measurement distance decreases. It’s necessary to analyze each situation individually. In any case, don’t believe those who claim that my radars can measure 100 meters – that’s definitely not true; it’s just people without expertise trying to deceive you. In your specific situation, guided-wave radars won’t work either; the cable must be secured firmly. Even if it is secured, I think it might still break due to the movements of the ship.

It’s either a tank on the ship or one on land

Under-mounted ultrasonic tank level monitor and fuel consumption monitor

The ultrasonic probe is mounted directly below the outer wall of the tank, passing through the tank wall made of steel, iron, stainless steel, glass, plastic, or fiberglass, without coming into any contact with the liquid or vapor inside the tank. It enables accurate measurement of the liquid level in tanks found on tank vehicles, tank containers, tank ships, and railway tank cars – including liquids such as milk, syrup, liquid carbon dioxide, liquid nitrogen, and all other liquids for which the sound speed is known – as well as oils such as gasoline, kerosene, diesel, engine oil, crude oil, and vegetable oils. True isolated measurement is achieved. Overview: 1. It is extremely easy to install – simply apply acoustic grease to the detection probe and attach it directly below the fuel tank; echoes with a sufficient intensity will be generated. No need to make holes in the tank, no flanges required, no connecting pipes needed ； No drilling is required, no fire is involved, there is no risk of fire, and no debris will fall into the tank. 2. It can store the date, time, and hour; the oil level and temperature at that moment. The storage interval can be adjusted, allowing data to be stored for 1 to 12 months depending on the chosen interval length. 3. Real-time storage data can be viewed through the host computer software; of course, fuel consumption, refueling amounts, and abnormal fuel usage can be determined from data analysis. 4. It features temperature compensation, enabling continuous automatic calibration to always ensure the highest measurement accuracy. The precision is 1 millimeter, with a maximum range of 3 meters. It can be used properly and provide accurate measurements even in different temperatures as well as on moving vehicles and ships. Main applications: tank vehicles, tank containers, tank ships, railway tank cars, for the real-time and accurate monitoring of liquid levels in tank equipment, as well as data storage. The container wall at the location where the measuring head is installed must be made of a rigid material that can transmit signals effectively. Such as: carbon steel, stainless steel, various hard metals, fiberglass, epoxy resin, rigid plastics, ceramics, glass, hard rubber, and other materials or composite materials. If the tank wall at the location where the measuring head is installed is made of multiple layers of material, these layers must be in close contact with each other, without any bubbles or air pockets. The inner and outer surfaces of the tank wall in this area should be smooth. Technical parameters: Range specification – 3m; Display resolution: 1mm; Container wall thickness – 1–8mm (1–40mm available as an option); Short-term repeatability: 1mm; Power supply – DC, 9–36V; Measurement error: 1‰; Output interface – 485; Operating temperature for the main unit: -20°C to +70°C; Operating temperature for the probe: -40°C to +100°C (250°C available as an option). Working principle: As shown in the diagram on the left, when measuring the liquid level, a modulated sound wave signal is sent out from the probe; after reflecting off the liquid surface, this echo signal is detected by the probe. The CPU calculates the liquid level height based on the relationships in the digital model. h = ct/2; where h is the liquid level height, t is the time it takes for the sound wave to travel from emission to return, and c is the speed of ultrasonic waves in the liquid. Installation of the ultrasonic probe: For containers, acoustic grease can be applied to the working surface of the probe, after which it can be pressed directly against the bottom of the container by hand. The probe must be aligned in the same line as the distance being measured. There are no obstacles such as coils directly above the probe. Model specification: J15D 3A, for use in vehicles and ships; 3M measurement range; ultrasonic, surface-mounted type. Series: Jian Shi Wu series. Usage and operation instructions: Before use, check whether the front and rear covers of the instrument housing are loose, and whether an external power supply is connected (if external power is to be used). Connect the probe leads to the instrument interface, apply acoustic grease to the probe and install it directly below the bottom of the container being tested, making sure it is in close contact with the container walls. Power it on using DC 12–36V, or use AC 110, 220V for power supply. After power-on, the instrument will automatically perform a self-check and then enter the measurement display mode. By observing the echo indicator light on the right side of the LCD screen, and moving the ultrasonic probe while doing so to achieve the strongest echo, the user can directly read the liquid level value inside the container from the LCD screen through the instrument’s viewing window. Monitoring software interface