Technical data
Proline Promass E 300 Modbus RS485
170
Hauser
16.3 Input
Measured variable
Direct measured variables
• Mass flow
• Density
• Temperature
Calculated measured variables
• Volume flow
• Corrected volume flow
• Reference density
Measuring range
Measuring range for liquids
DN
Measuring range full scale values
min(F)
to
max(F)
[mm]
[in]
[kg/h]
[lb/min]
8
³⁄₈
0 to 2
000
0 to 73.50
15
½
0 to 6
500
0 to 238.9
25
1
0 to 18
000
0 to 661.5
40
1½
0 to 45
000
0 to 1
654
50
2
0 to 70
000
0 to 2
573
80
3
0 to 180
000
0 to 6
615
Measuring range for gases
The full scale value depends on the density and the sound velocity of the gas used and can
be calculated with the formula below:
max(G)
= minimum (
max(F)
· ρ
G
: x ; ρ
G
· c
G
· π/2 · (d
i
)
2
· 3600)
max(G)
Maximum full scale value for gas [kg/h]
max(F)
Maximum full scale value for liquid [kg/h]
max(G)
<
max(F)
max(G)
can never be greater than
max(F)
ρ
G
Gas density in [kg/m³] at operating conditions
x
Constant dependent on nominal diameter
c
G
Sound velocity (gas) [m/s]
d
i
Measuring tube internal diameter [m]
DN
x
[mm]
[in]
[kg/m
3
]
8
³⁄₈
85
15
½
110
25
1
125
40
1½
125
50
2
125
80
3
155
