Calculation Table

Flow vs. orifice diameter at ΔP = 10 %, 50 % and 90 % of the transmitter range. Flow in 10⁴ m³/d at standard conditions.

Calculation Conditions

Temperature

°C

Gauge pressure Pg

MPa

Atmospheric pressure Patm

MPa

Relative density SG (air = 1)

CO2 mole fraction

N2 mole fraction

Isentropic exponent κ

Gas input mode

Compressibility factor Z

Standard temperature

°C

Standard pressure

kPa

10 % of range

kPa

50 % of range

kPa

90 % of range

kPa

Standard DN list or custom range. Orifice Ø from 12.5 mm (or 0.1·D) to 0.75·D.

Orifice step

Rows

Minimum flow: smallest orifice at ΔP = 10 %. Maximum flow: largest orifice at ΔP = 90 %.