DEFINITION:
Set of moving device that fitted into a closed conduit driven directly by water flow. Its turbine rotor rotates about the axis which is perpendicular to water flow.
WORKING PRINCIPLES:
Water flow drives vane rotate. Rotating times which is proportional to water flow speed are gathered, hence total volume passed through water meter is recorded.
CHARACTERS:
Outside adjust copper body, painted available as demanded.
Counter:vacuum sealed, frost proven, keeping clear reading for long.
Magnetic transmission free from disturbance.
WORKING CONDITION:
Water temperature≤45ºC(Hot water meter≤90ºC)
Water pressure≤1Mpa
MAXIMUM PERMISSIBLE ERROR:
From the minimum flow-rate (qmin) inclusive to the lower zone of the transitionalflow-rate (qt) exclusive: ±5% .
From the transitional flow-rate (qt) inclusive to the higher zone of the maximum flow-rate (qmax) exclusive: ±2%(hot water meter±3%.)
| DN/Q |
Q4=1.25Q3 |
Q3 |
R=Q3/Q1 |
Q2=1.6 |
Q1 |
R=Q3/Q1 |
Q2=1.6Q1 |
Q1 |
| l/h |
l/h |
l/h |
| 15 |
3125 |
2500 |
80 |
50 |
31.25 |
100 |
40 |
25 |
| 20 |
5000 |
4000 |
80 |
80 |
50 |
100 |
64 |
40 |
| 25 |
7875 |
6300 |
80 |
126 |
78.75 |
100 |
100.8 |
63 |
| 32 |
12500 |
10000 |
80 |
200 |
125 |
100 |
160 |
100 |
| 40 |
20000 |
16000 |
80 |
320 |
200 |
100 |
256 |
160 |
| 50 |
31250 |
25000 |
80 |
400 |
250 |
100 |
250 |
156.25 |
| Nominal size DN (mm) |
Class of measurement |
Overload flow-rate q s (m 3 /h) |
Permanent flow-rate q p (m 3 /h) |
Transitional flow-rate q t (l/h) |
Minimun flow-rate q min (l/h) |
| 15 |
B |
3 |
1.5 |
120 |
30 |
| 20 |
B |
5 |
2.5 |
200 |
50 |
| 25 |
B |
7 |
3.5 |
280 |
70 |
| 32 |
B |
12 |
6 |
480 |
120 |
| 40 |
B |
20 |
10 |
800 |
200 |
| 50 |
B |
30 |
15 |
3000 |
450 |
Overall dimensions and weight
| Type |
Size (mm) |
Length (mm) L |
Width (mm) W |
Height (mm) H |
Connecting Thread D |
Weight (kg) |
| LXSG-15E1 |
15 |
165 |
80 |
100 |
G 3/4"B |
1.1 |
| LXSG-20E1 |
20 |
190 |
98 |
105 |
G 1"B |
1.7 |
| LXSG-25E1 |
25 |
220 |
105 |
110 |
G 1 1/4"B |
2.4 |
| LXSG-32E1 |
32 |
260 |
120 |
120 |
G 1 1/2"B |
2.8 |
| LXSG-40E1 |
40 |
300 |
120 |
155 |
G 2"B |
5.2 |
| LXSG-50E1 |
50 |
300 |
125 |
155 |
G 2 1/2"B |
7.3
|
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