1.Product introduction
The Multi-Jet Dry Type Vane Wheel Water Meter is mainly used to measure the total volume of water flowing through the water pipe. Since the mechanism is isolated from the water, and magnetic gearing between impeller and counter, the mechanism will not affected by the suspended impurities in the water. It is easy to read, long-term clearness, anti-frozen, long life, and high reliability.
2.Main features
1. Meet the requirement of GB/T 778.1~3-2007 level of measurement standards (equivalent to the international standard ISO 4064-1 ~ 3:2005.IDT);
2. Mechanism is isolated from the water and reads clearly;
3. The combination of the wheel and pointer shows convenient reading;
4. Protect against freezing, fog, or condensation;
5. Low requirements on water quality than wet type water meters;
6. The structure optimization can be developed as remote transmission water meter;
7. Shell can be used with copper, iron, plastic;
8. Accurate measurement, High-reliable, simple structure, widely used in export;
3.Service conditions
a)Temperature rating:T30(The cold water)T90(The hot water)
b)Pressure rating:Map10
c)Pressure loss rating:△P63
d)Upstream flow field sensitivity rating:U10
e)Downstream flow field sensitivity rating:D5
f)Non-measurable negative test
4.Indication error
a)Low area(Q1≤Q≤Q2)The maximum allowable error is ±5%
b)High area(Q2≤Q≤Q4)The maximum allowable error is ±2%
5.The main technical parameters
Nominal diameter DN (mm) | Overload flow Q4 (m3/h) | Common flow Q3 (m3/h) | Boundary flow Q2 (m3/h) | Minimum flow rate Q1 (m3/h) | Range ratio R(Q3/Q1) | Accuracy Level | Minimum reading (m3) | Maximum reading (m3) |
DN15 | 3.125 | 2.5 | 0.05 | 0.03125 | 80 | level 2 | 0.0001 | 99999.9999 |
0.040 | 0.025 | 100 | ||||||
0.032 | 0.020 | 125 | ||||||
DN20 | 5 | 4 | 0.08 | 0.05 | 80 | |||
0.064 | 0.040 | 100 | ||||||
0.0512 | 0.032 | 125 |
6.Overall size and weight
Nominal diameter | Length(L) | Width(W) | Height(H) | Weight | Threaded connection |
mm | Kg | D | |||
DN15 | 165 | 94 | 104 | 1.5 | G3/4B |
DN20 | 195 | 94 | 106 | 1.7 | G1B |
Note:size and weight are for reference only.
7.Flow error curve
八、Pressure loss curve