1. Summary

The remote wired valve controlled water meter produced by Tuoqiang Electric Co., Ltd. is a self-developed remote wired valve controlled water meter that is convenient for remote meter reading and control, designed to meet the actual needs of daily water use. It adopts M-bus communication interface to achieve remote direct reading of water meter water consumption, effectively avoiding the management department from exceeding the meter on site. Facilitating the management department to control the water usage of remote wired valve controlled water meters, making remote meter reading and control faster, more reliable, and effectively improving productivity while saving manpower, material resources, and financial resources.

This remote wired valve controlled water meter complies with the requirements of "Measurement of Water Flow in Closed Pipelines - Drinking Cold and Hot Water Meters" GB/T778-2007, "Safety Rules for Drinking Cold Water Meters" CJ266-2008, "Calibration Regulations for Cold Water Meters" JJG1162-2009, "Residential Remote Meter Reading System" JG/T162-2009, "Technical Conditions for Data Transmission of Household Measuring Instruments" CJ/T188-2004, "Electronic Direct Reading Water Meters" CJ/T383-2011, "Electronic Remote Water Meters" CJ/T224-2012, or "Communication Protocol for Multi functional Electric Energy Meters" DL/T645-1997. Communication protocols can also be customized according to customer needs.

2. Product Features

-The microcontroller adopts a high reliability design and runs stably.

-Unique anti bubble technology, high success rate of data reading.

-Not susceptible to external strong magnetic attacks, with extremely strong anti-interference performance.

-Fully sealed design, good waterproof performance.

-Daily work does not require power supply and has a long service life.

-The remote water meter adopts absolute coding and M-BUS communication methods, with stable signal transmission. The current required for reading is directly provided by the M-BUS bus without the need for an external power supply. The meter reading method is fast, and the data is more accurate and reliable.

-Remote transmission and control of water meters can be achieved through system software with prepaid functions and valve opening/closing operations.

3. Main functions of the product

3.1 Measurement function

The water meter can measure unidirectional, non pulse water flow.

3.2 Functions of the Collection and Retrieval Management System

The water meter can be set for meter number and read/write usage through RS232 communication on a PC, with a baud rate of 2400bps.

3.3 Anti destruction self-protection function

When the water meter encounters magnetic interference, it automatically closes the valve. At the same time, the water meter records magnetic interference information. When the magnetic interference disappears, the valve automatically opens and updates the magnetic interference information.

3.4 Battery undervoltage reminder function

The water meter supports two levels of bottom voltage alarm. When the first level voltage is reached, the user is reminded to contact the management department to replace the battery. It can continue to be used for three days, and the valve will lock after three days. Real time storage of data in the table, battery replacement will not damage the data in the table.

3.5 Water consumption display

Without changing the mechanical measurement display part, the error rate reading between the electronic and mechanical parts is less than one ten thousandth. The electronic part does not hinder the reading of the mechanical device and does not affect the calibration of the water meter.

3.6 Utilizing GSM network for wide coverage

Using mobile networks, in areas with poor GPRS signals within the coverage range of wireless GSM/GPRS networks, there are mobile signal amplification devices that can solve the problem of poor signals and achieve monitoring.

Easy to install, similar to the installation method of ordinary base meters, without changing the existing installation habits of water meters.

3.7 Free definition of data transmission frequency and time

Meter reading does not require household registration, and remote meter reading can be achieved by customizing the upload time of data, several times a month, and at any time each time can be freely defined. The work cycle can be set, supporting proactive reporting of instrument information by staggered intervals of time, day, month, and ID suffix.

3.8 Water meter clock requirements: The mainboard clock should be automatically calibrated to maintain synchronization with the server.

3.9 Comes with check valve function, effectively preventing water meter rotation problems caused by unstable water pressure, airbags, and other reasons

4. Product Technical Specifications

4.1 Electrical Parameters

4.1.1 Working power supply DC36V (MBUS interface)

4.1.2 Working environment: Temperature from 0.1 ℃ to+45 ℃ (cold water), 0.1 ℃ to 90 ℃ (hot water) Humidity: 0 to 95% RH

4.1.3 Communication interface with upper computer: MBUS bus interface

4.1.4 Communication 2400bps

4.1.5 Protection against bus open circuit, short circuit, idle and other faults

4.1.6 Maximum distance from table to data collector: ≤ 500m

4.1.7 Communication Protocol: CJ/T188-2004 Protocol

4.1.8 The collector is normally loaded with 256 water meters

4.1.9 The collector adopts GPRS mobile network for stable and fast signal transmission, without the need for a concentrator.

4.1.10 The water meter can withstand a water pressure strength of 1.8MPa for 20 minutes without leakage or damage

4.1.10.1 Remote wired valve controlled water meter (the base case is made of copper, with a copper content of ≥ 59% and a lead content of 0.004mg/L, which meets the specification requirements) The case has been treated with rust prevention and complies with CMA/WM778 "Technical Specification for Small Diameter Drinking Water Cooled Water Meter Case". The meter cover is made of cast lead brass, the water meter glass is made of tempered glass, and the production glass complies with JB/T8480 standard. The connecting nut is made of cast lead brass, which complies with GB/T1176 standard

4.1.11 Power Supply

Adopting a replaceable built-in lithium battery, with a 3.6V capacity of 6AH, it is a commonly used battery size and shape in the market. It can last for more than 6 years after communicating once a day

4.2 Main technical indicators

Maximum allowable error:

---The maximum allowable error in the low zone from including the minimum flow to excluding the boundary flow is ± 5%

---The maximum allowable error in the high zone, including the decomposition flow rate, is ± 2% for cold water meters and ± 3% for hot water meters.

4.3 Main Dimensional Parameters