Pressure transducer correction for Specific Gravity
Pressure transducer correction for Specific Gravity
(OP)
Hello,
I have a JP5 jet Fuel tank. The level in the tank is monitored by a Pressure transducer at the bottom of the tank having a 4mA - 20mA output. The Analog gage for observing the tank level is scaled from 0ft(4mA) to 40ft (20mA). How would I correct the analog gage readings to compensate for JP5 having a Specific Gravity of .8
Looking for a formula I could use to create a table of corrections or correction graph
Rgds
onrev321
I have a JP5 jet Fuel tank. The level in the tank is monitored by a Pressure transducer at the bottom of the tank having a 4mA - 20mA output. The Analog gage for observing the tank level is scaled from 0ft(4mA) to 40ft (20mA). How would I correct the analog gage readings to compensate for JP5 having a Specific Gravity of .8
Looking for a formula I could use to create a table of corrections or correction graph
Rgds
onrev321





RE: Pressure transducer correction for Specific Gravity
If the original scale was calculated for water (not sure why a fuel tank would be) but I would do it like this:-
Ρw * g * h1 = Ρf * g * h2
1000 * 9.81 * h1 = 800 * 9.81 * h2
so 1.25h1 = h2
where h= height of fluid
g= gravity const.
Ρ= density of fluid
desertfox
RE: Pressure transducer correction for Specific Gravity
That is right, but a little confusing to me.
The equation is P=ρgh, so I would write the derivation as:
ρwater*g*hindicated=ρfuel*g*hfuel so:
ρwaterhindicated=ρwaterSG*hfuel Finally:
hfuel=hindicated/SG
So just divide your calculated height by SG (just like DesertFox said) to get the actual height
David