pressure manometer with arduino help

Hi, i just want to know if there is a manometer or a pressure sensor to read a fuel pressure coming out from a pump.....

the fuel its bunker so its needs to be heavy duty.... but i cant find anything on the web....

any help in here??

pressure sensor to read a fuel pressure coming out from a pump

All my vehicles have oil pressure sensors, so clearly something is available. Now, the question is what are you attempting to measure the pressure of, and what is the range of pressures?

There is a big difference between measuring natural gas at 0.5 psi and liquid nitrogen at 1000 psi, for instance.

in fact i want to meassure many things, like air pressure, fuel pressure(bunker), and vapor pressure..... they are on the range of 100 to 200 psi...

but i think they must be heavy duty for yhe aplication involved, they are parts of a boiler

Bunker fuel would be a challenging pressure measurement. Bunker fuel for those that don't know it is the cheapest, dirtiest hydrocarbon fuel available that can actually still be made to burn. It's used on commercial shipping mostly where fuel costs is a all important trade-off. Most ships have to switch by law in most countries to diesel fuel while coming in or leaving ports of call. Bunker fuels are often used with very large and expensive centrifugal filters in line or they could never kept the engines or boilers running on that nasty stuff.

Anyway, the problem often is that pressure sensing lines tend to get plugged up when trying to measure such thick dirty liquid often requiring heat tracing of the sensing line to lower the viscosity and help prevent plugging and therefore false readings. Good luck with your search.

Lefty

copachino:
in fact i want to meassure many things, like air pressure, fuel pressure(bunker), and vapor pressure..... they are on the range of 100 to 200 psi...

but i think they must be heavy duty for yhe aplication involved, they are parts of a boiler

You really should be looking at industrial 'pressure transmitters' for such wide ranging applications and sever service. Often they can be found used on E-bay for very attractive prices. They are built like battleships. Here is a typical picture of one:

Lefty

thanks for the reply, well in fact bunker in the boiler its preheeated by an electric resistance to 80°C to lower the viscosity (also one variable to watch) but sometimes the bunker gets cold in the flame and makes a big mess..... so im trying to use some sensor and arduino to have a more complex online control of the boiler.... but do you know if those pressure transmitters can be wire to arduino????

copachino:
thanks for the reply, well in fact bunker in the boiler its preheeated by an electric resistance to 80°C to lower the viscosity (also one variable to watch) but sometimes the bunker gets cold in the flame and makes a big mess..... so im trying to use some sensor and arduino to have a more complex online control of the boiler.... but do you know if those pressure transmitters can be wire to arduino????

Typically they can. Most will work on anything from around +12 to +48vdc voltage source and output a constant current value that is proportional to the measurement range such the 4ma = 0% reading and 20ma = 100% measurement range. If one wires a ground based 150 ohm resistor in series with the transmitter and it's external DC voltage source, then the voltage drop across the resistor will be 1 to 5vdc for 0 to 100% measurement range, which fits in the arduino analog input voltage range.

Lefty

wooo thank man thats pretty good news to me.... i will see if i can get one of then to make some tests..... now i ust will have to research about if i can plug a wifi shield and control everything from a web page.....