1. Summary

Remote wireless valve control water meter is a kind of remote wireless valve control water meter which is convenient for remote meter reading and control. It has built-in wireless communication module and wireless connection with water meter collector. The collector is inserted into a flow card to realize remote direct reading and recharge of water consumption of water meter, effectively avoiding the management department's door-to-door over meter. It is convenient for the management department to control the water consumption of the remote wireless valve controlled water meter, making the remote meter reading and control more efficient and reliable, and effectively improving the productivity while saving human, material and financial resources.

Remote wireless valve control water meter is a kind of remote wireless valve control water meter which is convenient for remote meter reading and control. It has built-in wireless communication module and wireless connection with water meter collector. The collector is inserted into a flow card to realize remote direct reading and recharge of water consumption of water meter, effectively avoiding the management department's door-to-door over meter. It is convenient for the management department to control the water consumption of the remote wireless valve controlled water meter, making the remote meter reading and control more efficient and reliable, and effectively improving the productivity while saving human, material and financial resources.


2、Product features

- single chip microcomputer is designed with high reliability and stable operation.

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

- it is not attacked by strong magnetic field and has strong anti-interference performance.

- fully sealed design, good waterproof performance.

- no power supply for daily work, long service life.

- the remote water meter adopts absolute coding mode and Lora wireless communication mode. The signal transmission is stable without external power supply. The meter reading mode is fast and the data is more accurate and reliable.

- remote transmission of remote control water meter, prepayment function can be realized through system software, opening and closing valves.


3、Main functions of the product

3.1Metering function

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

3.2Set function

       The PC can be used to set the meter number, read and write the amount of water meter through RS232 communication, and the baud rate is 2400bps.

3.3Anti damage self-protection function

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

3.4Battery undervoltage reminder function

   The water meter supports two-level bottom voltage alarm. When the first level voltage is used, the user is reminded to contact the management department to replace the battery. The battery can be used for three days and the valve is locked after three days. The data in the table is stored in real time, and the battery replacement will not damage the data in the table.

3.5Water consumption display

   The error rate reading of electronic and mechanical parts is less than 1 / 10000 without changing the mechanical measurement display part. The electronic part does not hinder the reading of the mechanical device, and does not affect the verification of the water meter.

3.6The water meter collector uses GSM network and covers a wide range

  Using mobile network, in the coverage of wireless GSM / GPRS network, where the GPRS signal is poor, there are mobile signal amplification devices, which can solve the problem of signal difference, and can realize monitoring. It is easy to install, just like the common base meter, without changing the existing water meter installation habits.

3.7Freely define the number and time of data transmission

   The meter reading does not need to enter the home, and the remote meter reading can customize the upload data time, several times a month, and can be defined freely at any time. The work cycle can be set, and it supports to stagger the information of the active reporting table according to the interval time, day, month and ID tail number.

3.8Water meter clock requirements, the main board clock automatically proofread, keep synchronization with the server.

3.9With check valve function, it can effectively prevent water meter rotation caused by unstable water pressure, air bag, etc


4、Product technical indicators

  4.1Electrical parameters

   4.1.1 Working power supplyDC36V

   4.1.2 Working power supply Zero point one ℃ to + 45 ℃ (cold water) Zero point one ℃ to 90 ℃ (hot water) humidity: 0 to 95% RH

   4.1.3 Communication interface with upper computer: Lora wireless

   4.1.4 Communication 2400bps

   4.1.5 For bus open circuit, short circuit, idle and other fault protection

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

   4.1.7 Communication protocol: CJ / t188-2004 protocol

   4.1.8 256 water meters are normal water meters with load of the collector

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

     4.1.10 The water meter can be 1.8MPa Bear water pressure strength of 20min, without leakage and damage

     4.1.10.1Remote wireless valve control water meter (base case is copper, copper content ≥ 59%, lead content 0.004mg/L Meet the requirements of the specification) the case has been treated with rust prevention, which is in accordance with CMA / wm778 technical specification for small caliber drinking water cooled meter case. The cover is cast lead brass, the water meter glass is toughened glass, the production glass is in accordance with JB / t8480 standard, and the connecting nut is cast lead brass, which is in accordance with GB / t1176 standard

      4.1.11Power Supply

          With replaceable internal lithium battery, 3.6V Capacity 6ah is the size and shape of battery for general use in the market. It can last for more than 6 years to communicate once a day


4.2 Main technical indicators


Nominal diameter

Measurement level

Overload flow

Q4

Common flow rate

Q3

Boundary flow rate

Q2

Minimum flow rate

Q1

Maximum reading

DN(mm)

m³/h

M³

15

2level

3.0

2.5

0.05

0.03

99999.9

20

2level

5.0

4.0

0.08

0.05

25

2level

8.0

6.3

0.13

0.08


     Maximum permissible error：

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

     --- The maximum allowable error from the decomposition flow to the high area including the maximum flow is ± 2% for cold water meter and ± 3% for hot water meter.


4.3Main dimension parameters


Nominal diameter

DN（mm）

length

L(mm)

width

L(mm)

height

L（mm）

thread

D

Connecting thread length

(mm)

Amin

Bmin

15

165

85

110

G¾B

10

12

20

195

85

110

G1B

12

14

25

225

85

110

G¼B

12

16


5、Storage and transportation precautions

  5.1Stored Environment

     5.1.1 The transportation, packaging and storage of water meter shall conform to zby002-81 and GB / t15464-1995 general technical conditions for instrument packaging

     5.1.2 The water meter shall be stored in the original package in a clean environment, with the ambient temperature of 26 ℃ to 35 ℃ and the relative humidity of no more than 85%. There is no corrosive gas or mould in the air.

     5.2 Transportation requirements

     5.2.1During transportation, the packaging environment shall be free from severe vibration and impact.

     5.2.2 Stacking of outer boxes shall not exceed 5 layers


6、Precautions for unpacking inspection

6.1When unpacking, do not use the water meter and contact the supplier as soon as possible if the water meter is severely impacted or the shell is obviously damaged due to falling from height.

6.2After the water meter is unpacked, if it is not installed and used in a short period of time, it shall be packed and put back into the original packing box for collection. If it is rainy season, moisture-proof measures shall be taken in time.


7、Precautions for installation and use

   7.1install

  7.1.1Before installing the remote wireless valve control water meter, first read and record the meter address to ensure that the electronic code in the meter is consistent with the serial number of the dial.

   7.1.2 The installation of remote wireless valve control water meter must conform to GB/ T778.2 Installation requirements.

7.1.3The caliber of the remote wireless valve control water meter shall be determined according to the caliber of the installed pipeline and the commonly used flow less than or close to the commonly used flow of the remote wireless valve control water meter. The installation position shall avoid exposure, flooding, freezing and pollution, and shall be convenient for disassembly and reading.

7.1.4The remote wireless valve control water meter must be installed horizontally, with the water flow direction consistent with the direction indicated by the arrow and the reading dial of the meter head facing up.

7.1.5Before installing a new remote wireless valve control water meter, the sundries such as sand, hemp and so on in the pipeline shall be removed first to avoid water meter failure.

7.1.6If the water meter is installed at the water inlet end of the boiler, it is better to install a check valve at the outlet of the water meter to prevent the internal parts of the water meter from being damaged due to the backflow of hot water and steam from the boiler.

7.1.7Put the meter connector into the connector nut and install it on the pipeline, and then twist the connector nut to install the remote wireless valve control water meter on the pipeline. Keep the reading plate of the remote wireless valve control water meter level up. When the water meter is connected with the pipeline, it should not be subjected to large bending force to avoid damaging the remote wireless valve control water meter interface.

 7.2Precautions for use

  7.2.1Regularly check the operation of remote wireless valve control water meter, and pay attention to antifreeze in winter.

  7.2.2The installation position shall avoid exposure to the sun, freezing, pollution, dampness and flooding, so as to facilitate disassembly and meter reading. During the freezing period, in addition to binding the water meter and water pipe, it is not necessary to close the valve at the water inlet end of the water meter, and open the drain valve and faucet at the water outlet end, so as to prevent the meter from damage due to freezing expansion.