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By measuring the velocity change of ultrasonic wave propagation in pipe water flow, the velocity of water flow is deduced, and then the water flow through the pipe is calculated. The NB IoT mobile Internet of Things module is added to realize the remote timing transmission and management of data according to the preset management strategy.
15814469667 Ms.Chen
Pipe material: copper
Shell material: increase ASA;
Ambient temperature: 0～50℃;
Fluid water temperature: 0+℃～30℃;
Working water pressure: ≤1M Pa;
Flow field sensitivity: U10, D5;
Electromagnetic environment: E1;
Installation environment: Type B;
Measuring electronic circuit: working 3.6V～3.2V, quiet current ≤5μA;
Measuring battery: 3.6V high-energy lithium battery, effective for 10 years (temperature≤30℃, basic communication mode).
NB-IoT module contains communication traffic: 8 years;
Independent NB-IoT module high-energy lithium battery, communication times: ≥365×8 times;
Interactive buttons: touch-sensitive buttons;
Data storage: 36 months of operating status information;
Measurement relative error
Zone (Q1 ≤ Q ＜ Q2): - 5% ≤ relative error ε＜ 5% ；
Middle zone (Q2 ≤ Q ≤ Q3): - 2% ≤ relative error ε ≤2% ；
High area (Q3 ＜ Q ≤ Q4): - 2% ≤ relative error ε ≤2% ；
Flow technical parameters
|
Nominal diameter |
Pickup flow |
Minimum flow |
Boundary flow |
Common flow |
Overload flow |
Accuracy level |
|
(mm) |
Qst (L/h) |
Q1 (L/h) |
Q2 (L/h) |
Q3 (m3/h) |
Q4 (m3/h) |
|
|
15 |
4 |
12.5 |
20 |
2.5 |
3 |
2 |
|
20 |
4 |
20 |
32 |
4 |
5 |
|
|
25 |
6 |
39 |
62 |
6.3 |
7 |
|
|
32 |
8 |
62 |
99 |
10 |
12 |
|
|
40 |
10 |
80 |
128 |
16 |
19 |
Overall specifications and dimensions
|
Nominal diameter |
Length |
Width |
Height |
Pige Tread d |
|
(mm) |
(mm) |
(mm) |
(mm) |
|
|
15 |
165 |
86 |
78 |
G1/2B |
|
20 |
195 |
90 |
80 |
G3/4B |
|
25 |
225 |
95 |
85 |
G1B |
|
32 |
230 |
100 |
90 |
G3/2B |
|
40 |
245 |
106 |
96 |
G2B |
Flow error curve
Pressure loss curve
