1. Purpose and scope of application
Membrane gas meter is a kind of flow measuring instrument, which is suitable for cumulative flow measurement of combustible gases such as gas, natural gas, liquefied petroleum gas and biogas in urban pipelines with a working pressure of 0.5~50kPa. A variety of different specifications can be widely used in urban residents' families.
2.Main specifications and technical parameters
2.1. Product model and meaning
2.1. Product model and meaning
2.2. Specifications
G4
3. Technical Parameters
|
Technical parameter name |
Unit |
G1.6 |
G2.5 |
G4 |
|
Minimum flow |
M3/h |
0.016 |
0.025 |
0.04 |
|
Initial flow rate |
M3/h |
≤ 0. 003 |
≤ 0. 005 |
≤ 0. 005 |
|
Maximum flow |
M3/h |
2.5 |
4 |
6 |
|
Overload flow |
M3/h |
3 |
4.8 |
7.2 |
|
Cyclotron volume (Vc) |
Dm3 |
0.7 |
1.2 |
2 |
|
Maximum allowable error |
% |
(0.1 qmax ≤ q ≤ qmax) ± 1. 5 (qmin ≤ q ≤ 0. 1qmax) ± 3 |
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|
Maximum working pressure |
KPa |
≤ 50 |
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|
Pressure loss |
Pa |
≤ 200 |
||
|
Sealability |
KPa |
No leakage at 75kPa for 3 minutes |
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|
Durability |
H |
Run for 2000 hours to meet the above performance indicators |
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|
Ambient Temperature Range |
° C |
-10 ° ~ 40 ° |
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|
Center distance of meter joint |
Mm |
130 |
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|
Table joint thread |
Mm |
M30*2 |
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|
External union thread |
DN |
DN15 |
DN20 |
|
|
Outline Dimensions (L*B*H) |
Mm |
168*124*220 |
172*135*225 |
195*152*250 |
|
Weight |
Kg |
1.71 |
1.85 |
2.17 |
|
|
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4. Product Structure and Size
|
|
G1.6 |
G2.5 |
G4 |
|
A（中心距） |
130mm |
130mm |
130mm |
|
B |
124mm |
135mm |
152mm |
|
L |
168mm |
172mm |
195mm |
|
H |
220mm |
225mm |
250mm |
| Qmax | 6m³/h |
| Qmin | 0.04m³/h |
| Working pressure （kPa） | ≤50 |
| Level of accuracy | Level 1.5 |
