1. Product Introduction
Use: Used to measure the total amount of cold water (or hot water) flowing through the tap water pipe.
2. Main features
The movement is a wet water meter movement of the rotor, with high measurement accuracy, the initial flow is small, to keep the counting mechanism of full irrigation (filled with water), anti-fouling performance, easy to read, beautiful appearance, safety and health, long life Features. The technical indicators are in line with national GB / T 778.1 ~ 3-2007 level of measurement standards (equivalent to the international standard ISO 4064-1 ~ 3: 2005.IDT level) requirements.
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. 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 | ||||||
0.025 | 0.01562 | 160 | ||||||
DN20 | 5 | 4 | 0.08 | 0.05 | 80 | |||
0.064 | 0.040 | 100 | ||||||
0.0512 | 0.032 | 125 | ||||||
0.040 | 0.025 | 160 | ||||||
DN25 | 7.875 | 6.3 | 0.126 | 0.07875 | 80 | |||
0.1008 | 0.063 | 100 | ||||||
0.08064 | 0.0504 | 125 | ||||||
0.063 | 0.039375 | 160 | ||||||
DN40 | 20 | 16 | 0.320 | 0.200 | 80 | 0.001 | 99999.9999 | |
0.256 | 0.160 | 100 | ||||||
0.2048 | 0.128 | 125 | ||||||
DN50 | 31.25 | 25 | 0.500 | 0.3125 | 80 | |||
0.400 | 0.250 | 100 | ||||||
0.320 | 0.200 | 125 |
6.Overall size and weight
Nominal diameter | Installation diameter(D) | Installation height(L1) | Movement total height(L2) |
mm | |||
DN15 | Φ69-0 -0.20 | 46+0.10 +0 | 76.7 |
DN20 | Φ69-0 -0.20 | 46+0.10 +0 | 76.7 |
DN25 | Φ73.5-0 -0.20 | 46.5+0.10 +0 | 81 |
DN40 | Φ90-0 -0.20 | 65.5+0.10 +0 | 111 |
DN50 | Φ90-0 -0.20 | 65.5+0.10 +0 | 111 |
Note:size and weight are for reference only.