Executing Standard
The products execute GB/T 6968-1997 diaphragm gas meter Grade B standard and JJG 577-2005 diaphragm gas meter standard and OIML R31-1995 diaphragm gas meter international standard，main technical index listed below is the actual inspection standard for meters to leave the factory.
|
Item |
Unit |
Parameter |
|
Nominal flow-rate（Qn） |
m³/h |
1.6 |
|
Maximum flow-rate(Qmax) |
m³/h |
2.5 |
|
Minimum flow-rate(Qmin) |
m³/h |
0.016 |
|
Working pressure range |
kPa |
0.5-50 |
|
Working environment temperature |
℃ |
-10-40 |
|
Average value of total pressure loss |
Pa |
≤200 |
|
Permissble error |
Qmin ≤Q0.1Qmax |
% |
±3 |
|
0.1Qmax≤Q≤Qmax |
% |
±1.5 |
|
Max cumulative reading figures |
m³ |
9999 |
|
Weight |
kg |
1.8 |
|
Meter fittings joint threading |
|
M30×2 |
|
Meter fittings central distance |
mm |
130 |
| endurance |
h |
5000 |
|
A(mm) |
B（mm） |
C（mm） |
D(mm |
E（mm） |
M（mm） |
重量（kg） |
| 130 |
201 |
224.5 |
160 |
6
7.5 |
G2″ |
1.8 |
|
