Installation Proline Promag 53 MODBUS RS485
18 Endress+Hauser
3.2.8 Nominal diameter and flow rate
The diameter of the pipe and the flow rate determine the nominal diameter of the sensor. The
optimum velocity of flow is between 2 and 3 m/s (6.5 to 9.8 ft/s)
The velocity of flow (v), moreover, has to be matched to the physical properties of the fluid:
• v < 2 m/s (v < 6.5 ft/s): for abrasive fluids
• v > 2 m/s (v > 6.5 ft/s): for fluids producing buildup
!
Note!
Flow velocity can be increased, if necessary, by reducing the nominal diameter of the sensor
(→ ä 17).
Recommended flow (SI units)
Nominal diameter Promag W Promag P Promag H
[mm] Min./max. full scale value (v ≈ 0.3 or 10 m/s) in [dm³/min]
2 – – 0.06 to 1.8
4– –0.25 to 7
8– –1 to 30
15 – 4 to 100 4 to 100
25 9 to 300 9 to 300 9 to 300
32 15 to 500 15 to 500 –
40 25 to 700 25 to 700 25 to 700
50 35 to 1100 35 to 1100 35 to 1100
65 60 to 2000 60 to 2000 60 to 2000
80 90 to 3000 90 to 3000 90 to 3000
100 145 to 4700 145 to 4700 145 to 4700
125 220 to 7500 220 to 7500 –
[mm] Min./max. full scale value (v ≈ 0.3 or 10 m/s) in [m³/h]
150 20 to 600 20 to 600 –
200 35 to 1100 35 to 1100 –
250 55 to 1700 55 to 1700 –
300 80 to 2400 80 to 2400 –
350 110 to 3300 110 to 3300 –
375 140 to 4200 – –
400 140 to 4200 140 to 4200 –
450 180 to 5400 180 to 5400 –
500 220 to 6600 220 to 6600 –
600 310 to 9600 310 to 9600 –
700 420 to 13500 – –
800 550 to 18000 – –
900 690 to 22500 – –
1000 850 to 28000 – –
1200 1250 to 40000 – –
1400 1700 to 55000 – –
1600 2200 to 70000 – –
1800 2800 to 90000 – –
2000 3400 to 110000 – –
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