Build simply digital led pressure gauge

[Brian1]

Been looking for a circuit to read low fuel pressure like 20psi on down and in vacuum would be nice too. Display can be simply LED bar display. I know there are many premade gauges out there but few are digital and all I have found are in a 2" round pod configuration. I just want a small rectangle display that I can place in the dash space I am looking at using for this. Its just the I like to use a few and run out of room with those 2" round gauges quickly. Another option I be looking at is the pressure difference across a filter as well. Been looking here but seems the search tool not that good or confused as to how to use it. I enter things like ' fuel digital pressure led ' and get many post but most only contain one of the words i am searching for. I figure a post would have all the words if there was one.

Thanks for all your help.
Brian

 

[ced]

Hi,
I've seen in my local electronics shop sensors that mark the level of the liquid they are in.
There is 2 kind of it, normally open and normally closed .
It's a switch actually, that you could fix in the lower part of the tank to know when the level gets lower than a certain level .
I don't know more about it, but maybe that can help you .
Cédric

 

[jbeng]

What type of pressure sensor(s) are you wanting to use?
Jeff

 

[Brian1]

I want to read diesel fuel pressure off a lift pump. It pumps up towards 15psi as I am told. I just like to be able to see the pressure so as to know what I am getting. it be helpful to monitor when it is time to change the filter. If I can use one sensor before and after I know the drop across the filter. The device and be 2 totally different devices.

Thanks to all that help me out.
Brian