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Wireless fuel level detector for a storage tank

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vivaldez

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Hi all
I need help in designing a wireless fuel level indicator for a storage tank.
I have thought in an hermetic device fixed inside the tank, in the bottom with some kind of pressure sensor. So, i can monitor the changes in the fuel weight and send an rf (could be fm) to a receiver outside the tank. It has to be an undetectable device. The idea is monitor fuel levels an give an alarm if the rate of lowering is faster than normal to avoid leakage or more important fuel theft.

Any suggestion?

Victor
 

fuel level detector

The idea of pressure sensing is good but you will need to calibrate for different materials if they have different densities. (P = ρ*g*h)
A more common way is ultrasonic level sensors. These are commercially available, give accurate results, and are safe with your flammable material.

I hope this could help.
 

wireless fuel level monitor

I hope the tank is plastic, because if it is metal, you are going to have a problem with the antenna. Also, a pressure device to measure fuel depth would be pretty hard to build. How many inches of the fuel equal one atmosphere? Your margin of error could be greater than the measurement. A float device is still the simplest and easiest way to measure a liquid level.
 

problems with fuel sensing device

Thanks for your replies.

The ultrasonic suggestion seems very good. I found this:
**broken link removed**

It´s an excellent option for my purpose, but i need to incorporate a way to detect faster than normal lowering of level. Do you think the receptor could be modified or complemented to acomplish this.
 

monitor automobile fuel level

There are two ways to detect faster than normal lowering of level.

1. Fixed time sampling:
detect level every pre determined time if the difference is greater than you
expected then you have faster than normal lowering of level.

2. Fixed difference in level:
A predetermined level is known upon reaching this difference in level the time
is calculated between the initial level and the final level.

Hope this could be of help.

:D
 

level decectors

if u use ultra sonic transdusors for monitoring the fuel level then it is more effective
 

sensores ultra-sônicos combustivel rf

i recommend use of ultrasonic sensor for mesuring fuel level.it work very good and rf transmiter circuit.

Added after 4 minutes:

mkiani said:
i recommend use of ultrasonic sensor for mesuring fuel level.it work very good and rf transmiter circuit.
Click to expand...
 

ultrasonic level detection circuit

hI how are the tx and rx be mounted?
let us asume the tank is car fuel tank?

is there a non invasive way?
 

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