A

Can any one help how to calculate this DP flow in m3/hr.

In field we use DP flow meter in range of 0-500 mbar (the equivalent flow rate is 20,000 Kg/hr). The transmitter is calibrated for 0-500 mbar with linear characteristics.

In DCS system, we need show in m3/hr. The range in DCS is 0-39m3/hr.

I used the formula: Qv = 3.14*d(sq)*(sq.root(2*Delta P)/ rho (1-(d/D)power4)))

My question is for Delta P, Shall I use 500 mbar or 20,000 kg/hr?

Regards,

Aravazhi