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13.3 Approved measuring range according to MID
Nominal diameter
Measuring range (m³/h) / (acfh)
mm
inches
Q
l780
3
77650 / 23000
100
4
150
6
200
8
250
10
300
12
350
12
400
16
450
12
500
20
600
24
650
26
700
28
750
30
800
32
900
36
1000
40
108000 / 3800000
1
*
The extended measuring range only effects Qmin. It can be
used at pressures above p ≥ 4 bar / p ≥ 60 psi.
For meters with a full bore inner diameter according to Di-2 in the table at the end of chapter 13.5,
the table values for Q
and Q
min
The number of acoustic paths is 6 for all variants.
Q
max
min
5 / 175
1000 / 35320
8 / 208
2400 / 84760
20 / 700
4200 / 148350
32 / 1130
6600 / 233100
50 / 1750
9400 / 332000
70 / 2450
11400 / 403000
I90 / 3180
15000 / 530000
120 / 4230
19000 / 670700
150 / 1750
23500 / 830000
180 / 6350
34000 / 1201000
260 / 9175
45000 / 1588000
340 / 12010
52000 / 1834800
420 / 14335
60000 / 2115000
460 / 16230
68000 / 2399000
550 / 19250
86000 / 3030000
700 / 24500
850 / 29750
are to be increased by a factor of 1.1.
max
13 Technical specifications
Extended measuring range (m³/h) /
(acfh) *1
Q
min
(2,5 / 88)
abi
in preparation
(4 / 140)
abcd
in preparation
(10 / 350)
bci
in preparation
16 / 560
25 / 880
35 / 1240
45 / 1590
60 / 2120
75 / 2650
90 / 3180
130 / 4590
170 / 6000
210 / 7400
320 / 8100
550 / 19250
700 / 24500
850 / 29750
Manual USM GT400 · EN10 · May 2021
181
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