Narrowband IoT water meter

Introduction:

Narrowband IoT water meter is an energy metering product that utilizes NB IoT (Narrowband IoT) technology for remote meter reading. It has the advantages of supporting massive connections, deep coverage, low power consumption, and low cost, and supports cellular data connections of devices in wide area networks, making it a breakthrough technology for achieving the Internet of Things. Automatic remote meter reading of water meter usage has been achieved, effectively avoiding the manual work of on-site meter reading by management departments. Nowadays, many regions are using narrowband IoT water meters, and their water meter reading rate can reach over 99%, effectively saving labor costs in meter reading and equipment maintenance.

Narrowband IoT water meter technical parameters:

【1】 Power supply method: ER26500 high-capacity lithium battery (+supercapacitor)

【2】 Battery life: 6 years (reported daily)

【3】 Supply voltage: 3.6V;

【4】 Sleep current: 1.0 μ A;

【5】 Reported current: 30mA-40mA

【6】 Relative humidity: ≤ 93% RH;

【7】 Applicable installation environment: B

【8】 Applicable electromagnetic environment: E1;

【9】 Environmental temperature: 5 ° C~55 ° C.

【10】 Traffic parameters:

(a) T30 (cold water meter); 30/90 (hot water meter)

(b) Pressure level: MAP1.0 Pressure loss level: △ p63.

(c) Upstream flow field sensitivity level: U10, downstream flow field sensitivity level: D5.

(d) The maximum allowable error is within the range of 0.1 ℃ to 30 ℃ for water temperature, with a low zone (Q1 ≤ Q ≤ Q2) of ± 5%; (Q2 ≤ Q ≤ Q4) is ± 2%; When the water temperature is above 30 ℃, the maximum allowable error in the high zone is ± 3%, and remains unchanged in the low zone.

(e) The electronic signal meter reading is accurate to 1 digit.

Advantages of Narrowband IoT Water Meter Function:

【1】 Fully wireless design, the entire system does not require a single cable;

【2】 Real wireless monitoring collects water meters, which can view daily water usage data, battery voltage status, valve control status, and other information;

【3】 Long service life, designed with built-in lithium battery for a service life of over 6 years, running on the operator's public network, with a wide coverage area, good signal, and no need to install concentrators;

【4】 The accuracy and qualification rate of counting is 100%, and the NB IoT water meter is equipped with dual reed switches for measurement;

【5】 Stable wireless signal and strong anti-interference ability;

【6】 Support enterprise custom protocols with strong compatibility;

【7】 Using surface mount SIM cards, the operator's fees are cheap and maintenance free;

【8】 The water meter is based on NB-IOT narrowband cellular communication technology and operator network communication, with advantages such as low communication delay, long transmission distance, deep network coverage, wide links, and low power consumption. The communication is stable, reliable, and secure;

【9】 Narrowband IoT water meters are suitable for various building structures such as multi story and high-rise buildings, towers, villas, apartments, etc;

【10】 Adopting low-power NB-IOT data transmission module, low power consumption is achieved through sleep technology processing, and battery power can achieve a service life of 6 years;

【11】 No need for complex construction wiring, small engineering quantity, and low installation cost;

【12】 Using a communication operator network, there is no need to set up base station concentrators, reducing the difficulty of early debugging and later maintenance;

【13】 Including metering, anti magnetic attack, voltage detection, power-off storage function, valve in place switch status detection, valve remote control, and automatic unblocking valve;

【14】 The data transmission adopts a combined mode of active timed reporting and card swiping triggered reporting. The water meter will autonomously report data according to the set reporting cycle, which can be set; Users can also trigger data reporting through external card swiping;

【15】 Adopting industrial grade NB IoT modules, the mobile card adopts industrial grade M2M IoT network card;

The intelligent water management platform that interacts with water meters can provide comprehensive and stable services, enabling timely and proactive push of meter reading data, accurate execution of valve control and meter reading commands, and ensuring efficient and normal operation of water meters.

Narrowband IoT water meter price reference:

1. DN15 caliber with valve control: 200 to 300 yuan per piece; DN15 caliber without valve control: 150 to 200 yuan per piece;

2. DN20 caliber with valve control: 300 to 400 yuan per piece; DN15 caliber without valve control: 250 to 300 yuan per piece;

3. DN25 caliber with valve control: 450 yuan to 500 yuan per piece; DN15 caliber without valve control: 300 to 350 yuan per piece.

Manufacturing execution standards for smart IoT water meters:

1. GBT 26795-2011 Numerical Control Quantitative Water Meter;

2. GBT25918-2010 Portable Water Meter Calibration Instrument;

3. GB/T36243-2018 Water Meter Input/Output Protocol and Electronic Interface Requirements;

4. GBT25920-2010 Plastic Case and Pressure Parts Technology for Drinking Cold Water Meter;

5. Announcement of GB/T778.1-3-2007/ISO 4064-1:2005 standard;

6. GB/T 778.1~3-2007 Measurement of Water Flow in Closed Full Pipelines.

Narrowband IoT water meter is a new type of intelligent water meter, which has the advantages of strong real-time performance, easy installation, and easy data collection and analysis compared to traditional remote water meters and intelligent water meters. In the design and installation process, there is no need for on-site operations such as drilling or wiring. Simply install the meter on the pipeline, and all data information collection, processing, and debugging are completed through IoT technology on the computer terminal.