Common CGT-02 Series User Manual

7
COMMON S.A. CGT-OM-18 february.2018
Table 2. Basic metrological parameters of CGT-02 meters
DN
nominal
diameter
G
gas
meter
size
Q
max
maximum
flow
Q
min
minimum flow at rangeability:
LF
emitter
constant
HF1, HF2
emitter
constant
(approximate)
HF3 ÷ HF6
emitter
constant
(approximate)
∆p
(3)
for
Q
max
1:20
(1)
1:20
1:30
1:50
(2)
-
-
m
3
/h
[m
3
/h]
[m
3
/h]
[m
3
/h]
[m
3
/h]
[pulses /
m
3
]
[pulses / m
3
]
[pulses / m
3
]
[Pa]
DN 50
G 65
100
5
5
-
-
10
2610
94829
760
DN 80
G 100
G 160
G 250
160
250
400
8
13
20
8
13
20
-
8
13
-
-
8
1
1
1
742
742
470
26974
26974
17059
260
620
1500
DN 100
G 160
G 250
G 400
250
400
650
13
20
32
13
20
32
8
13
20
-
8
13
1
1
1
692
692
401
16782
16782
9719
260
670
1580
DN 150
G 400
G 650
650
1000
32
50
32
50
20
32
13
20
1
1
227
227
6873
6873
280
720
G1000
1600
80
80
50
32
0,1
129
3910
1600
DN 200
G 650
1000
-
50
32
20
1
114
3113
260
G 1000
G 1600
1600
2500
-
-
80
130
50
80
32
50
0,1
0,1
116
67
3167
2025
760
1700
DN 250
G 1000
G 1600
G 2500
1600
2500
4000
-
-
-
80
130
200
50
80
130
32
50
80
0,1
0,1
0,1
58
58
34
2111
2111
1223
310
760
1550
DN 300
G 1600
G 2500
G 4000
2500
4000
6500
-
-
-
130
200
320
80
130
200
50
80
130
0,1
0.1
0,1
32
32
19
1181
1181
680
260
650
1600
DN 400
G 2500
G 4000
G 6500
4000
6500
10000
-
-
-
200
320
500
130
200
320
80
130
200
0,1
0,1
0,1
13
13
7,0
444
444
285
170
440
900
(1) – refers to gas meters operating in HV positions, equipped with sealed bearings or a check
valve dedicated for periodic lubricant application (without piston pump and oil
container)
(2) – refers to gas meters for working pressures (p) 2 ÷ 11 MPa.
(3) – for particular gas meters the measured pressure drop value can be different by ± 5 %
from values specified in Table2.
NOTE: For gas meters equipped with all options (2 HF sensors on the turbine wheel & 2 HF
sensors on the reference wheel & 2 thermowells) the ∆p pressure drop can be
increased by 20%.

Common CGT-02 Series Specifications

General

Brand	Common
Model	CGT-02 Series
Category	Measuring Instruments
Language	English