Product Description
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:
Counter:vacuum sealed, frost proven, keeping clear reading for long.
Magnetic transmission free from disturbance.
Fine plastic meter body and cover. Outside adjustable.
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%.)
Norminal
Size
DN(mm) |
Class of
measurement |
Overload
Flow-rate
qs(m³/h) |
Permanent
Flow-rate
qp(l/h) |
Transitional
Flow-rate
qt(l/h) |
Minimum
Flow-rate
qmin(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 |
6.0 |
480 |
120 |
40 |
B |
20 |
10 |
800 |
200 |