Ultrasonic level sensor for diesel tank includes top mount and external mount. Oil tanks are storage equipment commonly used in oil depots, oil terminals, oilfield refineries and petrochemical enterprises. For the liquid medium (petrochemical products) in the tank, the liquid level, temperature, density and pressure (pressure storage tanks) are mainly measured. ) and other parameters. Calculate the volume and weight of the liquid storage.
Industrial diesel storage tanks are available in large and small tanks. Ultrasonic liquid level sensors can well meet the liquid level measurement of diesel tanks of various sizes and installation methods.

Ultrasonic Level Sensor for Diesel Tanks

Featured Ultrasonic Level Sensor for Diesel Tanks

Challenges of Level Measurement in Industrial Diesel Tanks

Because the substances stored in diesel tanks are usually flammable, explosive, volatile, and toxic. In the event of leakage, accidents such as fire and explosion are likely to occur. Therefore, the general diesel tanks are divided into two categories: trade tanks and intermediate tanks.

The liquid level, temperature, density, volume, and mass of the trading tank must be monitored and measured frequently, and the accuracy is required.

Tundish tanks are usually only monitored for parameters such as level, temperature and pressure (pressurized storage tanks). In order to prevent the oil tank from roofing and evacuation accidents, it does not need to be handed over for measurement.

The selection of the diesel tank level sensor should be determined according to the design results of the oil tank. Different structures choose different liquid level instruments. Buried storage tanks and surface tanks, Ultrasonic Level Sensor for Diesel Tanks are cost-effective options.

Extended reading: fuel tank liquid level sensor 4-20ma

Features of Ultrasonic Fuel Level Sensors

  • Using non-contact measurement, the operation is stable and reliable, and it is not easily affected by the viscosity and density of the liquid.
  • Optionally, the ultrasonic level gauge can be installed in the silo and the upper part of the liquid tank. Or externally mounted.
  • It can be continuously measured at fixed points, and can easily provide measurement signals for telemetry and remote control.
  • The structure is simple, the reading is convenient, and it is very easy to install and maintain.
  • With temperature compensation function, it can be used in environments with large temperature difference, with high precision and strong adaptability.
  • With RS-485 communication interface. Special echo processing method is adopted to effectively avoid false echoes.
  • Higher explosion-proof level (ExdIICT6Gb) and protection level (up to IP66/IP67).
  • The PVDF material probe can ensure reliable measurement of the instrument in corrosive liquids or corrosive environments.
  • High cost performance and low maintenance cost.
  • Safe cleaning and long instrument life

Read more about: Ultrasonic VS Radar level transmitter-different applications

Ultrasonic Fuel Level Sensor Working Principle

Here we sort by where and how ultrasonic level sensors are installed.

The first type is the opening of the tank with the sensor mounted on the top.
The second type is that the tank body does not have holes, and the sensor is attached to the outer wall of the tank.
The third type is the sensor attached to the bottom of the tank.

The principle of ultrasonic level gauge is that ultrasonic waves are reflected at the liquid level. Another way of saying it is echo measurement distance.

Ultrasound probes emit short ultrasonic pulses. After reception at the liquid level, echo pulses are generated over a corresponding time t. That is, it is reflected back through the liquid surface, and the probe accepts it.

Following the standard formula, the probe, surface spacing results can be obtained. The distance from the ultrasonic probe to the bottom of the vessel is denoted as h. When v is known, the time t is measured, and h is obtained.

  • Measuring range: 0~20m (each range can be set, special customization)
  • Blind zone: 0.25m~0.5m;
  • Range accuracy: 0.3%;
  • Ranging resolution: 1mm;
  • Pressure: below 3 atmospheres;
  • Instrument display: built-in LCD to display liquid level or space distance;
  • Analog output: 4~20mA two-wire or four-wire;
  • Digital output: RS485, Modbus protocol or customized protocol;
  • Power supply voltage: DC24V/AC220V, built-in lightning protection device;
  • Ambient temperature: -20℃~+60℃;
  • Protection class: IP65;

Extended reading: Sludge Blanket Level Detector Appliactions

External Ultrasonic Liquid Level Meter

The system kernel of the liquid level meter is based on special ultrasonic processing technology capable of high-speed digital signal processing. After processing, the liquid level value is precise enough that additional CPU analyzing, comparing or judging is unnecessary. Once the CPU acquires the liquid level value, the value is transmitted directly to NVRAM for storage and display. In addition, the liquid level meter can output a 4~20mA standard signal or transmit measurement results to a computer ( or secondary meter ) via an RS-485 interface.

As shown in Fig. 3-1, during the process of measuring liquid level, the modulated acoustic signal is transmitted from the probe and echoed from the liquid surface. The probe then detects the echoed signal. After going through preprocessing, processing and post-processing, this signal provides the accurate time t directly. The CPU then calculates the liquid level height value through a mathematical model.

h = act/2

h:Liquid level height

a:Correction factor

c:Ultrasound transmitting velocity in liquid

t:Time duration between transmission and reception of ultrasound signal

Measuring range3m, 5m, 10m, 20m, 30m
Display resolution1mm
Short time repetition1mm
Measurement error±1‰FS(Excessive wall thickness and temperature/pressure instability may affect measurement precision.)
Span shift±10 m
Current output4~20mA,Max load 750Ω
Communication interfaceRS-485,  IrDA
Operating ambient temperature for liquid level meter-20℃~+60℃
Operating ambient temperature for ultrasonic probe-50℃~+60℃(A probe with wider temperature range can be provided upon request)
Operating ambient humidity15%~100%RH
Explosion proof markEx d ⅡC T6 Gb 
Housing ingress protectionIP 67
Liquid level display4 digit OLED display
Blind areaThere is a blind area for the liquid level meter

Read More About: Difference Between Class 1 Div 1 And Class 1 Div 2

The oil level sensor is installed at the bottom of the tank. Applying the echo ranging principle of ultrasonic waves, the ultrasonic signal is sent out from the bottom. The sound wave reflects back
after encountering the oil surface, and then calculates the liquid level height according to the time and velocity formula. At the same time, combined with digital signal processing technology, the influence of container wall thickness can be overcome to achieve high-precision and non-perforated measurement of the liquid level in the container, which can meet the industrial application requirements.

Read More about: Factors To Consider When Choosing Explosion Proof Ultrasonic Level Sensors

Ultrasonic Fuel Level Sensors for Challenging Applications

Ultrasonic liquid level sensor is a liquid level sensor that is more commonly used to measure various material levels and liquid levels. It is divided into two types: integrated type and split type. Integrated ultrasonic level instrument, optional two-wire or four-wire system .The two-wire system can only supply 24VDC, 4-20mA current loop. Non-contact continuous measurement reduces maintenance and is cost-effective.

Extended Reading:

Laser Level Transmitter is a large-range, high-accuracy explosion-proof level measurement product supplied by Sino-Inst. It can measure media and application methods: particle, block, viscous, water conservancy, distance measurement, liquid level measurement, material level measurement

  1. The measured medium is flammable and explosive. Most of them are liquids and gases. For example: gasoline, alcohol, toluene, xylene, acetone, biogas, gas, hydrogen, etc., most of which are organic compounds. Solid: There are metal magnesium, metal sodium, yellow phosphorus, etc.
  2. Underground mines, including coal mines, iron ore, etc. Almost all mines require explosion-proof ultrasonic level sensors.
  3. Occasions with large dust. For example: wood processing workshop; coal processing workshop; when the dust reaches a certain concentration, it will also cause an explosion.
  4. Although there is no direct contact with flammable and explosive liquids and gases, it is also necessary to use explosion-proof ultrasonic level sensors and ultrasonic level sensors in explosion-proof areas. For example: fire pools in tank farms.

The above four situations require the installation of explosion-proof ultrasonic level sensors, which can avoid the existence of potential safety hazards.

Diesel Tank Level Monitoring System

Diesel Tank Level Monitoring System

The oil storage tank liquid level, temperature and pressure online monitoring system has changed the traditional method of using manual inspection ruler and laboratory analysis. Real-time dynamic monitoring of oil is realized. It provides accurate data basis for production operation and management decisions. Greatly avoid the occurrence of safety accidents.

All our level sensors support signal output. Including 4-20mA signal output. Or RS485 communication, etc.

So, if you connect the output signals of all liquid level sensors to a multi-channel recorder. Our paperless recorder can display and record the liquid level of each tank.

Diesel Tank Level Monitoring System

Extended reading: More Inline Digital Diesel Fuel Flow Meters

Monitoring Liquid Volume Solutions

Most of our liquid level sensors can output liquid level signals, such as 4-20mA signal, 0-10V signal, RS485 and so on.

Monitoring liquid volume solutions

However, the liquid level transmitter alone cannot calculate the liquid volume of tanks of different sizes. It’s too complicated. A separate recorder is required to calculate it.

Therefore, the digital display volume meter can collect, display and convert the liquid level of various regular and irregular tanks in the industrial field into the corresponding tank volume. It is suitable for monitoring, controlling and collecting various process parameters.

Ultrasonic technology is not only used to measure level, but also can be used to measure depth. More about The Difference Between Ultrasonic Depth Sensor And Ultrasonic Level Sensor.

More Featured Diesel Tank Level Sensors

SI-LT Magnetostrictive level transmitter with Local Digital Display
SI-U02 Multi-Point Liquid Level Float Switch
SI-U01 Float Level Sensor
SMT3151TR Submersible Level Transmitter–2Mpa,200m
SI-80 Radar Level Sensors
SIRD90 Radar Level Transmitters, Non-Contact


We are talking about industrial oil storage tanks here. In the past, people determined the liquid level of the diesel tank by manually reading the value of the liquid level gauge.
Now, we can install a variety of suitable level sensors on the tank. Through various signal outputs, monitor the liquid level of our tank remotely.

Read more about: How to Choose the Right Diesel Fuel Level Sensor ?

The measurement accuracy of our commonly used Ultrasonic Level Sensor for Diesel Tanks is 0.3%.

According to the principle of tank level measurement:

There are direct liquid level measuring instruments. Differential pressure type liquid level measuring instrument. Buoyancy type liquid level measuring instrument. Electric liquid level measuring instrument. Ultrasonic liquid level measuring instrument. Radar liquid level measuring instrument. Radioactive level measuring instruments, etc.

According to the measured medium characteristics:

Commonly used level gauges are heavy-hammer float level gauges. Magnetic flap level gauge. Radar level gauge. Ultrasonic level gauge. Differential pressure level gauge, etc.

Extended reading: Industrial Tank level indicators and Tank Level Gauges

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Ultrasonic Fuel Level Sensor Price

Sino-Inst is Manufacturer of Ultrasonic Level Sensor for Diesel Tanks. We supply more than 20 kinds of Ultrasonic Level Sensor for Diesel Tanks. 40% ultrasonic level meters, 40% External Ultrasonic Liquid Level Meters and 20% Externally attached Ultrasonic oil level sensors.

Explosion-proof ultrasonic liquid level sensor reference wholesale price USD 285.00/pc

Ultrasonic Level Sensor for Diesel Tanks are mainly used for level measurement of various oils.
It can measure even liquids such as water, seawater, oil, and slurry.

Ultrasonic Level Sensor for Diesel Tanks enable stable level measurement without tank modifications. This greatly meets the measurement needs of many applications. Can be used from small to large tanks.

Sino-Inst’s Ultrasonic Level Sensor for Diesel Tanks, made in China, Having good Quality, With better price. Our level measurement instruments are widely used in China, India, Pakistan, the US, and other countries.

The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Ultrasonic Level Sensor for Diesel Tanks, flow sensor, or other device, give us a call.

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