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Promag 31
6.4 Nominal diameter and flow rate
As a rule the pipe diameter governs the nominal diameter of the sensor. When the
volume flow is known, it is possible to estimate from the nomograms whether the
optimal velocity range of 2...3 m/s can be adhered to.
According to OIML-approvals, system no. ZW 128 and the error tolerances/limits
for partial devices of class 4 (+/-3% for hydraulic transmitters) the following counter
units are allowed.
Promag 31 A
Promag 31 F
Endress+Hauser
DN
Q
(Q
i
[mm]
[l/h]
2
1.131
4
4.524
8
18.095
15
63.617
25
176.714
DN
Q
(Q
i
3
[mm]
[m
25
0.177
32
0.289
40
0.452
50
0.707
65
1.194
80
1.809
100
2.827
125
4.418
150
6.362
200
11.309
250
17.671
300
25.447
350
34.636
400
45.239
450
57.255
500
70.685
600
101.787
700
138.544
800
180.956
900
229.022
1000
282.743
)
Q
(Q
min
s
max
[l/h]
113.1
452.4
1809.5
6361.7
17671.4
)
Q
(Q
min
s
max
3
/h]
[m
/h]
17.671
28.953
45.239
70.686
119.459
180.956
282.743
441.786
636.173
1130.973
1767.146
2544.69
3463.60
4523.89
5725.55
7068.58
10178.7
13854.4
18095.6
22902.2
28274.3
6. Technical Data
)
)
59
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