Flowline LD35 DeltaSpan - Manual (Page 7)

Rev B MN301035 7 of 16
GETTING STARTED Step Six
Pressure transmitters are designed to be submersed within the application
fluid. The transmitters can either rest along the bottom of the tank or be
suspended at any desired level within the tank. Please note that the
physical location of the level transmitter will indicate the lowest level of
measurement within the tank. For example: mounting the transmitter 1
foot from the bottom of the tank, then the lowest reading of liquid will be
1 foot from the bottom.
How to convert Pressure into Liquid Height?
Pressure transmitters are all describe by the pressure range and not by liquid height. To convert pressure to
liquid height, use the following ratio:
1 psi = 2.31 feet of water
or
1 psi = 0.704 meters of water
 Therefore, a 15 psi transmitter will have a liquid height = 34.65 feet
(10.56 m):
15 psi x 2.31’/psi = 34.65’
or
15 psi x 0.704 m/psi = 10.56 m
With the above ratio, you can always find the liquid height or water
column (wc) of any pressure transmitter.