Ultrasonic Module

Other Hardware Sensors
1

Good morning to all, I start already with the premise that I'm not sure you can do this project but I try to ask maybe someone knows how to do it.
I saw that between the modules of Arduino there is an ultrasonic sensor, I would like to use it to read the height of a liquid in a closed container. To make it easier I want to see how much gasoline I have in a tank without having to make a hole. There are sensors that work with this system but cost 200 fr and I saw that there is the possibility (perhaps) to do so with arduino.
I put the link to the sensor that I found so anyone who wants to help me knows what I'm talking about.
I wish you all a good day.

Link: Waterproof Ultrasonic Module JSN-SR04T Water Proof Integrated Distance Measuring Transducer Sensor for Arduino

2

Water proof is not spark proof.

Start with a explosive liquids approved sensor - such as the float type sensors used in fuel tanks of cars.

3

There are some sensors which are installed at the bottom of fuel tank. Which is more reliable?

4

harry_webe:
There are some sensors which are installed at the bottom of fuel tank. Which is more reliable?

Reverse the question! What is the worst that can happen if the sensor fails?

Paul

5

Nothing can happen because the liquid is Disel and it's not flammable... inside the tank there is a sensor that lights up only when the Diesel is almost finished, I think it's a digital sensor 1 or 0 and I wanted to replace it with an analog sensor where I can see the level of gasoline. Since I don't think you can use the sensor already present to do what I would like I thought to use an ultrasonic sensor controlled by Arduino, the container of the Disel and plastic and I do not know if this material can cause discomfort to the ultrasonic sensor.

6

Since when is diesel fuel not flammable?

7

It needs fire to catch fire... 52 c degrees ignition.
Class 2 flammable I've read.
In any case I wouldn't use electronics inside a tank. Also. If u put ultrasonic sensor in the open ambient with diesel how u know it won't make it oily after some weeks exposed to that environment?
Let me know if u solve it . very interesting issue!!!

8

The Disel to explode must be compressed so even if there was a spark nothing would happen. If you want there are videos on the internet that put a match in the Disel and nothing happens.
The sensor I do not want to put it inside the tank but rest it on, the problem is 'to recognize which is' the coating of the tank and which is the liquid. I'm doing some tests and it seems that I'm approaching a solution.

9

Mozzini97:
The Disel to explode must be compressed so even if there was a spark nothing would happen. If you want there are videos on the internet that put a match in the Disel and nothing happens.
The sensor I do not want to put it inside the tank but rest it on, the problem is 'to recognize which is' the coating of the tank and which is the liquid. I'm doing some tests and it seems that I'm approaching a solution.

WRONG! For Diesel fuel to explode it must be in very fine droplets dispersed in air. That is why it explodes in the combustion chamber of your engine. That is why sometimes Diesel fuel explodes during truck and train accidents.

Paul

10

The sensor mentioned in this thread can measure the height of a fluid in a metal tank when it (the sensor) is glued to the bottom of the tank: How to read serial data from Non-contact Ultrasonic liquid level sensor - Sensors - Arduino Forum

You could try it to see if it works with your plastic tank.

It would need to be calibrated for your fluid.

But even when it is attached to the outside of the tank, there is risk of fire or worse. Basic introduction here: https://www.grainger.com/content/qt-hazardous-locations-124

No doubt there are industrial versions of that sensor that are rated for hazardous locations. Some may even be specifically designed for plastic (or FRP) tanks.

Before you implement this project, you should consult a professional.

11

Good day

Look for an XKC-Y25 contacless sensor. I use them on the ouside of my aquaponics tanks. You use a plastic tank, so they should work just fine.

12

I know those types of sensors and from what I understood when looking at the datasheet are sensors that are digital, if there is water send the 12 v (1 logical) and if there is no send 0 V (0 logical). what I would need is an analog sensor that measures the height of the liquid ...
Thank you so much for your interest :slight_smile:

13

There seems to be dedicated sensors for this application