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:
Types: Wet, dry, vertical, liquid sealed.
Wide measuring range, high accuracy.
Stable measuring capacity
Long working life
Low pressure loss
All technical figures are conformed with GB/T778.1~3-1996 which is equivalent to ISO4064 Standard Class B.
WORKING CONDITION:
Water temperature≤ 45º C(Hot water meter≤ 90º C)
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=1.6Q1 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 |
| DN/Q |
Class of measurement |
Overload flow-rate q s |
Permanent flow-rate q t |
Transitional flow-rate q p |
Minimum flow-rate q min |
| 15 |
B |
3 |
1.5 |
120 |
30 |
| 20 |
B |
5 |
2.5 |
200 |
50 |
| 25 |
B |
7 |
3.5 |
280 |
70 |
Overall dimensions and weight
| Type |
Size(mm) |
Length(mm)L |
Width(mm)W |
Height(mm)H |
Connecting Thread D |
Weight (kg) |
| LXS-13D |
15 |
110 |
80 |
86 |
G 3/4" |
0.6 |
| LXS-20D |
20 |
130 |
80 |
86 |
G 1" |
0.7 |
| LXS-25D |
25 |
160 |
80 |
86 |
G 1.1/4" |
0.9 |
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