Trumsense 0 To 2 Meters RS232 RS485 Analog Output Ultrasonic Fuel Level Sensor Fuel Consumption Monitor Installed On Top Of Fuel Tank Of Truck Or Sprinkler Or Fire Truck

Item No.: 00262
Measure the height of the oil tank liquid level as the basis for oil quantity to prevent oil theft and oil leakage. And for industrial tank solution control, the related operations of adding liquid or reducing liquid are carried out.
Description Review

Trumsense Ultrasonic Fuel Consumption Sensor /

Ultrasonic Fuel Tank Level Indicator



1: How it works?

Model TUF ultrasonic fuel level sensor is installed on the bottom of the tank. Ultrasonic wave goes from the bottom of the tank to the top of the fuel surface, reflects and goes back to the bottom. The time it takes the sound burst to return to the sensor is measured and translated into a distance measurement that can be converted into a level indication, volume measurement by the sensor.

It is a perfect solution for monitoring the fuel level and fuel consumption of commercial vehicles and also stationary tanks, etc. The sensor can detect and report fuel theft in real-time by sending an alert. For the fuel level, it is measured and sent to GPS tracker directly, then upload it to the server and processed to display on your computer, mobile phone or tablet.


2: Key Features

  • • Perfect design to detect fuel tank only need to drilling holes.
  • • Accurate measurement of fuel level, same as capacitive fuel level sensor.
  • • Stable performance even in extreme temperature conditions in range from -30℃ to 75℃
  • • Easy installation
  • • IP67 protection



3: Basic specification of trumsense ultrasonic fuel consumption / fuel tank level sensor:



Power Supply:


Power Consumption:

Typical - 0.45W / Sleep mode -0.04W

Operational Temperature:

-20 ~ +65

Measuring Range:



±0.5% FS 





Serial Port Output:

RS232 \ RS485 \ Analogue Output (optional)

Baud Rates:

Default 9600 or Customized



4: Installation guide of trumsense ultrasonic fuel consumption / fuel tank level sensor:

It is necessary to empty the fuel tank before the installation to compliance with safety rules.

The vehicle should be parked on the flat ground.

If no enough space on the top of the tank, remove it from the vehicle for installation.


Product list:




Model TUF (probe with 1m cable)




Self-drilling screw


8m extension cable


Digital indicator for installation (optional)





Installation steps And Setting:

Probe Dimension:


Step 1: 

Select the location for installation. The location should be close to the center of the top of the tank. The sound path should be free from any obstacles to the surface of the fuel.

Important: The mounting position is critical for ultrasonic level sensor. Please ensure that the installation area is away from fuel filler, oil gauge, internal partition, otherwise the ultrasonic wave may not reach the top of the fuel and get back with correct data.


Step 2: Drill the selected center location by electric drill between ø38-ø40mm

Step 3: Mark and drill five mounting holes with ø4.2mm drill



Step 4: Fill the tank with fuel. Put the flange gasket on the mounting holes and JUST put the TUF into tank. Then connect the digital indicator with TUF and 9-36V power supply to set the right tank height and check the installation status.


Digital Indicator Instruction:

a. When the digital indicator is mounted correctly and powered up, it shows number 8 only for a few seconds

b. Then it will show the default height value, e.g. 80cm as below:


c. Use the red and black buttons to set the actual height of the measuring tank:

•   Push the red button once means +1cm

•   Push the red button for a few seconds means +10cm

•   Push the black button once means -1cm

   Push the black button for a few seconds means -10cm

After setting up the right height, push the red and black buttons at the same time to enter next interface.


c. Then it shows two sets of figures as the following example:


   036.2 represents the height of the fuel is 36.2cm.

   The first 2 represents the number of echoes.

   The second 2 represents the installation status code.

If the actual echo number ≥1 and installation status code also ≥1, it is ok to proceed with the installation. 


Step 5: Install the TUF into tank and fix it with screws.

Important note:

 Do not over-tighten the sensor.

 When installed, the probe should not contact the edge of the center hole.


Step 6: Connect the TUF to GPS vehicle tracker with 8m extension cable.

We suggest to wrap the joint between the TUF and extension cable with black insulating tape and tie the cables as the following example, to reinforce the connection.


5: Wiring diagram of trumsense ultrasonic fuel consumption / fuel tank level sensor:





6: Configuration Protocol of trumsense ultrasonic fuel consumption / fuel tank level sensor:

6.1 Serial output mode: Active report every 10 seconds.

6.2 Baud rate: Default 9600, no parity bit, 8-bit data bit, 1 bit stop bit, no flow control.

6.3 Verification mode. Checksum

6.4 The output format from the sensor is hexadecimal data, you should convert the data to

ASCII format, then you parse it according to the following table. Example of the protocol:

*XD,529],02,01348,0500,1032,01347,0294,0112,8F# .


7: Application examples of trumsense ultrasonic fuel consumption / fuel tank level sensor:

● Provide data on refueling, oil leakage, and fuel consumption, and provide statistical decision-making assistance for enterprises to prevent fuel theft, optimize fuel consumption, optimize operations and driver driving behavior

● Monitor the water volume of the sprinkler, and provide help for the water volume management and visual online monitoring of the sprinkler

● Monitor the water volume of fire trucks, provide visual online monitoring for water volume management of fire trucks, ensure that fire trucks can timely ensure water consumption during firefighting incidents, and ensure the timely and effective use of firefighting water



8: The reasons why you choose trumsense to purchase?

● OEM ODM factory

● 7x24 hours online proposal supplied

● 100% satisfied after-sales services

Trumsense Technology is an ultrasound technology company integrating R&D, production and sales. Focusing on the R&D and production of ultrasonic material (liquid) level meters, liquid level difference meters, open channel flow meters, mud level meters, sensors, transducers and other products, it occupies nearly 45% of the ultrasonic liquid level and material level industry market.

Mainly engaged in ultrasonic material (liquid) level meter series, pressure level / transmitter series, flowmeter series.

The main application fields of the product: sewage plant water works, mines, water conservancy, power plants, chemical plants, steel plants, printing machinery manufacturing plants, etc., liquid level measurement in various industrial fields, especially sewage treatment, acid and alkaline liquid measurement.








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