Is there an ultrasonic liquid level sensor in a metal container for Arduino available?

Question

Arduino

I became interested in the task of making an ultrasonic sensor for measuring the fuel level in a car HBO cylinder. The task does not seem to be particularly difficult: you need the sensor itself, Arduino and a simple screen. The main thing is to teach the system to convert the sensor readings into numbers on the screen corresponding to the volume of liquid at the measured level. But the question arises whether such sensors exist in retail at a reasonable price. As I understand it, the sensor should work in the range of distances of 1-30 cm (approximate diameter of a cylinder installed horizontally), upon contact with the wall of the cylinder, send acoustic waves through it and receive waves reflected from the surface of the liquid, and not cylinder iron. Is there something similar in mass sale at a reasonable price, or is the industry not yet able to satisfy my Wishlist?

Answer 1

In industry, the amount of liquefied gas in a cylinder is measured by the mass of the
Arduino without additional piping in the car, it will catch ignition interference and fail.
Embed something into a balloon - endanger yourself and others.

Answer 2

This:
https://aliexpress.ru/item/32968346358.html
it will go, it won't work - it's not so expensive.

Answer 3

And why are you not satisfied with the standard float level indicator on the multivalve? Attach to the sensor (which are almost interchangeable) arduino, calibrate and forward. There are only a few types of sensors: 90 Ohm / 30 kOhm / 50 kOhm. It's on the hall sensor. There is, in my opinion, even lovato on the magrese (at the input 5v, at the output 0-5v). If you don't like it, put your hall sensor or magrez.
These are native display meters for 4 LEDs. And no one bothers you to count with higher accuracy. Don't forget a powerful averager. Add an accelerometer to correct readings when the throttle is off to the side from accelerating/braking/turning (or the car is up/down/tilting). Or do not take readings when in active traffic (at traffic lights it is quite possible to have time to make a measurement).
Ps if you think that there will be less sex with ultrasound, you are deeply mistaken. Only the price is more expensive and the tank must be dismantled for installation.

Answer 4

And what prevents you from the reflection from the bottom of the cylinder, let it reflect for yourself.
You send an impulse, you receive a reflection, the first reflection will be from the surface of the liquid, everything else is re-reflections, you ignore them.
The main thing is to pause between measurements.
Glue the emitter with epoxy, in principle any emitter will do.

Answer 5

You can measure the resonant frequency of the cylinder, knocked - the frequency was measured, without any ultrasound.