Introduction:

NB IoT water meter is a new type of energy control, measurement, management and charging product that our company has recently developed and manufactured. This product is based on NB IoT technology and has the characteristics of wide coverage, high reliability, high security, low cost, and low power consumption. In the field of smart water meters, it can not only reduce meter reading costs, but also achieve intelligent and big data management of water meter management, which has very important practical application value, especially suitable for water meters. Especially suitable for scenarios with multiple connection points and limited data transmission in a single transaction, such as watches, shared bicycles, lighting and streetlights, and forest fire prevention.

「1」 NB IoT water meter technical parameters:

(1) Discharge diameter: DN15/DN20/DN25 ；

(2) Waterproof grade: IP6/8；

(3) Network type: Standard NB IoT protocol, supported by the entire network;

(4) Message sending method: Hall signaling;

(5) Valve control: manual/automatic valve control;

(6) Ultra low power design: One lithium-ion battery can be used for 6 years;

(7) Pressure loss level: Δp 63；

(8) Temperature difference: Within the range of water temperature from 0.1 ℃ to 30 ℃, the maximum allowable error of the water meter is ± 2% in the high zone (Q2 ≤ Q ≤ Q4) and ± 5% in the low zone (Q1 ≤ Q ＜ Q2);

(9) Measurement characteristics: Level 2 water meter (accuracy level 2).

「2」 NB IoT water meter functional advantages:

(1) Three calibers of DN15/20/25 are used to obtain water readings through electronic pulse, which are reported to the NB platform for management;

(2) Remote reading: Proactively report readings on a periodic basis;

(3) Remote valve control: capable of remotely closing and opening valves;

(4) Prepaid: Supports prepaid and pre order quantities, and closes the valve for overdue payments;

(5) Backend system: prompts for battery undervoltage, abnormal metering, pre order quantity, and pre paid usage reaching the predetermined number. Different emergency water usage can be set according to different users;

(6) Large capacity storage: can freeze data for up to 24 months and 31 days per day;

(7) Step by step water pricing: Water pricing can be set at different benchmark prices and step by step prices based on user categories and usage;

(8) Internal/External Antennas: Supports both internal and external antennas, with stable and reliable signals, achieving full coverage and good reception;

(9) High accuracy of direct reading sampling: Based on our company's remote direct reading water meter, the reading accuracy can reach 99%;

(10) Flexible upload frequency setting: The data upload cycle can be set to meet the management needs of different users;

(11) Protection level IP6/8: Protection level IP68, suitable for various complex environments;

(12) Removable battery structure: The battery box adopts an independent replaceable design, without the need to open the main body cover, making replacement convenient;

(13) The system adopts BS architecture: there is no need to install a client, just log in through a browser, and it can be supported on both PC and mobile phones.

「3」 NB IoT water meter price reference:

1. Iron shell DN15 caliber: 220 yuan -320 yuan per piece; Copper shell DN15 caliber: 280 yuan -380 yuan per piece.

2. Iron shell DN20 caliber: 330-430 yuan per piece; Copper shell DN20 caliber: 380-480 yuan per piece.

3. Iron shell DN25 caliber: 420 yuan -530 yuan per piece; Copper shell DN25 caliber: 400 yuan -520 yuan per piece.

「4」 NB IoT water meter manufacturing execution standard:

1. This product complies with GB/T778.1~3-2007/ISO 4064-1~3:2005, "Measurement of Water Flow in Closed Full Pipelines - Water Meters for Drinking Cold Water and Hot Water", and is equivalent to the international standard ISO 4064-1~3:2005.

2. Adopting GB/T778, equivalent to ISO 4064:2014 international standard, named "Drinking Cold Water Meter and Hot Water Meter".

The IoT smart water meter based on NB IoT water meter has more stable signal transmission, better resistance to interference, and stronger security performance. At the same time, in the process of data transmission, there is no need for all intermediate links, and it can be directly transmitted from the instrument to the data platform, providing convenience for the implementation of direct control and reducing deployment costs.