I want to fit a vacuum pressure gauge to the fuel filter of a large marine diesel and monitor it via my rPi.
The purpose being to monitor the vacuum required to draw fuel from the tank and thru the filter. A high reading (very low pressure) will indicate blocked filter or fuel pickup (a recurrent problem )
If I can get a sensor reading to the rpi I should be able to make it available via OpenPlotter (https://docs.sailoog.com/openplotter-v1-x-x/) to my instruments.
My query is where should I look for an appropriate sensor? It needs to read 0 to minus 30 in Hg or 0 to -1 bar, fit securely to a vital fuel line, inured to diesel and obviously output in a form that can be readily converted to something the rpi can understand.
Grateful for any pointers.