Endress+Hauser Proline Promass A 100 PROFINET Operating Instructions Manual page 130

Technical data
Measured variable
Measuring range
130
16.3 Input
Direct measured variables
• Mass flow
• Density
• Temperature
Calculated measured variables
• Volume flow
• Corrected volume flow
• Reference density
Measuring range for liquids
DN
[mm]
1
2
4
Measuring range for gases
The full scale value depends on the density and the sound velocity of the gas used. The full scale value can be
calculated with the following formulas:
 = Minimum of
max(G)
 Maximum full scale value for gas [kg/h]
max(G)
 Maximum full scale value for liquid [kg/h]
max(F)
 <  
max(G) max(F)
ρ Gas density in [kg/m³] at operating conditions
G
x Limitation constant for max. gas flow [kg/m³]
c Sound velocity (gas) [m/s]
G
d Measuring tube internal diameter [m]
i
π Pi
n = 1 Number of measuring tubes
DN
[mm]
1
2
4
If calculating the full scale value using the two formulas:
1. Calculate the full scale value with both formulas.
Measuring range full scale values 
[in]
¹⁄₂₄
¹⁄₁₂
¹⁄₈
( · ρ : x ) and
max(F) G
2
(ρ · (c /2) · d · (π/4) · 3600 · n)
G G i
can never be greater than 
max(G)
[in]
¹⁄₂₄
¹⁄₁₂
¹⁄₈
Proline Promass A 100 PROFINET
min(F)
[kg/h] [lb/min]
0 to 20 0 to 0.735
0 to 100 0 to 3.675
0 to 450 0 to 16.54
max(F)
x
[kg/m 3 ]
32
32
32
Endress+Hauser
to 
max(F)