DP Transmitter Range

What kind of text mixes inches and cm? And isn't cm2 a unit of area?

Perfection is difficult to achieve, even if you are perfect.

DP transmitters measuring flow are so 1973. Nowadays, vortex-shedding flowmeters are dé rigeur for steam, and each one contains sufficient on-board intelligence and Human-Machine- Interface capability to make calculation unneccessary. Simply select one based upon the fluid conditions and the line size, and bolt it in-between-flanges during the assembly of the pipework.

It is not possible to range a DP cell on any fluid without the fluid conditions and the orifice plate diameter being known.

kg/cm2 is engineering units pressure units:
25 Kg/cm2 = ~25 bar = 356 psig

The data needed to size an orifice plate is not provided, but could be derived using some working assumptions for steam piping.

Working backwards, what data is needed to size an orifice plate for steam flow?

if the orifice plate size is known then what will the equation for range for example the orifice plate size is 6"....?

Pipesize: 250mm Tappings: D / 0.5D

Orifice size: 116.08705034943mm Stainless Steel

Range: 1000kg/hr Max. Diff Pressure 1.5kPa Max

Formula: W = 0.01252182275311516 CZEd² SQR(ph) kg/h

C=0.6054 Z=1 E=sqr (1/(1-m4)) m=d/D d= Orifice size p=density h = H20 DP