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NB-IoT wireless ultrasonic water-meter

 NB-IoT wireless ultrasonic cold water meter

        LXCN-IoT 15/20/25/32/40

 Function

By measuring the velocity change of ultrasonic wave during its propagation in the pipeline flow, we deduce the velocity of flow, and then calculate the flow of water through. Besides it is equipped with NB-IoT mobile Internet of things module, which can realize the remote timing transmission and management of data according to preset management strategy.

Communication link


  • Characteristic
  1. Small starting flow rate and the wide measuring range ratio;
  2. No moving components in the pipeline so that the pressure loss is small; no component wear as well;
  3. The forward flow rate and reverse flow rate can both be recorded, high metering accuracy, stable and lasting;
  4. The low power consumption circuit design ,the long service time of battery;
  5. The utility model can be installed at multiple angles at random and there’s no need to be horizontal or vertical;
  6. Strengthen waterproof protection design, the whole machine protection level up to IP68, can be installed in water meter wells for use;
  7. A variety of communication modes, wired meter reading, wireless AD hoc network meter reading, mobile phone self-help meter reading can all be chosen;
  8. Large capacity of data storage, the recording meter record complete operation information, including 36 months time-sharing consumption information;
  9. Designed with the function of preventing private disassembly and warning of abnormal leakage of the burst tube after the table;

  • Main parameters

  1. Pipe material: copper;
  2. Shell box material: ASA plus;
  3. Ambient temperature: 0~50℃;
  4. Fluid temperature: +0℃~30℃;
  5. Working water pressure: ≤1MPa;
  6. Flow field sensitivity: U10, D5;
  7. Electromagnetic environment: E1;
  8. Installation environment: class B;
  9. Electronic circuits: working 3.6V~3.2V, silent current ≤5μA;
  10. Measuring battery:3.6V high energy lithium battery, effective use life 10 years (temperature≤30℃, basic communication mode);
  11. NB-IoT module contained communication flow: 8 years;
  12. Independent NB-IoT module high energy lithium battery, number of times of communications available: >365*8 times;
  13. Multi-tabs digital display: 5 groups of more than 20 items for consumption data & parameters display;
  14. Interactive buttons: double touch sensing buttons;
  15. Data storage: the running state information of 36 months;
  16. Water price management: as 5prices of 4 ranks;
  17. NB-IoT module traffic: 8years ;
  18. Independent NB-IoT module high energy lithium battery, number of communication available: >365*8 times;
  19. Implementation standards: GB/T 778.1~3-2007 Cold Water Meter, CJ/T 434-2013 Ultrasonic Water Meter, ISO 4064-1~3:2014 Water meters for cold potable water and hot water.

  • Measurement relative error

    Low region (Q1≤Q<Q2): -5%≤ Measurement relative error ≤5%;

    Middle region (Q2≤Q≤Q3): -2%≤ Measurement relative error ≤2%;

    High region (Q3<Q≤Q4): -2%≤ Measurement relative error ≤2%;


  • Flow technical parameters

Nominal diameter 

Starting flow

Minimum flow

Bounded 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

5

20

32

4

5

25

6

39

62

6.3

7

32

8

62

99

10

12

40

10

80

128

16

19

 

  • Outline specification size

Nominal diameter

Length

Width

Height

Connection thread
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


 

 

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