Intelligent ultrasonic gas meter/Internet of things gas meter/g1.6 gas meter

product description:

Ultrasonic gas meter is a new type of all-electronic metering combustion method that uses the time difference of ultrasonic transmission in the medium to measure the gas meter. It has endogenous functions such as high reliability, high precision, and temperature and pressure compensation.

Technical principle:

The ultrasonic measurement adopts the time difference method. Its working principle is to use a pair of ultrasonic transducers to transmit and receive ultrasonic waves alternately in phase (or simultaneously), and indirectly measure the fluid by observing the time difference between the positive directions. The flow velocity of ultrasonic waves propagating in reverse flow in the medium, and then the flow velocity is calculated by an indirect measurement method.

(1) Improve measurement accuracy: calibrate each watershed separately to achieve full-range, high-precision calibration; ultra-low initial flow point, fine airflow can also be detected and measured; wide-range measurement; full electronic measurement
(2) Improve metering correction: temperature and pressure compensation, increase revenue;
(3) Stability/safety/anti-theft: excellent anti-theft performance; small flow leakage protection; overcurrent gas protection

Product advantages:

1) Support post-paid meter reading settlement and background pre-paid settlement;
2) Support network automatic meter reading;
3) Support remote valve control;
4) Support remote parameter configuration;
5) Support automatic alarm for equipment failure;
6) Support monthly data freezing management, and actively upload data at most once a day;
7) Real-time temperature compensation;
8) Real-time pressure compensation (optional).

NB-IOT
The main chip of the NB-IOT communication module adopts a high-performance embedded ARM cortex-m3 32-bit RISC controller,
Multi-level software detection and multiple hardware protection mechanisms ensure the stability of the device.
Powerful ARM cortex-m3 32-bit RISC microcontroller and NB-IOT wireless spread spectrum chip.

The product features are as follows:
(1) The nb-iot module adopts LGA package, which is small in size and compact in structure, and is easy to be applied in embedded products;
(2) Wide voltage power supply design, suitable for more applications;
(3) Integrate data transmission protocols such as TCP/UDP, and embed rich network service protocols, which are easy to design and use
upgrade products;
(4) Pass the high and low temperature test, in line with the industrial environment;
(5) Provide host computer software to realize on-site test equipment and compatibility with existing equipment;
(6) Deep coverage: the coverage is 100 times that of GSM;
(7) Massive connections: each community can provide 50,000-100,000 connections;
Low power consumption: the terminal battery has a service life of more than 6 years;

* Unmanned driving, reducing manpower.
●Automatic data logging.
●Industrial-grade communication equipment to ensure safe and reliable meter reading.
● Complete system log traceability.
●Visual graphics, data statistics.
● Meter status alarm; when there is a small power and small amount of magnetic attack sampling fault leakage alarm (external leakage alarm),
The real-time alarm information is uploaded to the background application platform.
●Control the valve switch of gas meter through background application software (desktop WEB and mobile APP).
● When the meter is removed or attacked by an external force, the information will be transmitted to the background application
real-time platform
●The stability of data transmission can be monitored.

1. Temperature: -10℃～40℃;
2. Working pressure: 0.5kPa～30kPa;
3. Relative humidity: ≤93%;
4. Atmospheric pressure: 86kPa～106kPa;
5. This series of gas meters are suitable for the measurement of urban pipeline gas, natural gas and liquefied petroleum gas;
6. The gas used should comply with the relevant national regulations and should not contain moisture to prevent the generation of condensed water.
frozen rice;
7. It should be installed in a dry and ventilated place, strictly prohibited in the bedroom or bathroom;
8. It should not be installed in a place with serious corrosion to the countertop;
9. Have sufficient safety distance from furnaces and other sources of ignition;
10. In order to avoid condensed water entering the countertop, the countertop should be installed horizontally at the height of the pipeline.

1. Before installing the gas meter, check the appearance first, and then check the sealing performance to prevent the gas meter from being damaged during transportation.
2. When installing the gas meter, it should be noted that the center distance of the pipeline connected to the gas meter should be consistent with the center distance of the gas meter. Do not forcibly twist the connection to avoid air leakage at the connection of the gas meter.
3. The gas meter should have a sufficient safety distance from fire sources such as stoves.
4. Remember: Air in pipes and gas meters should be evacuated before ignition. Gases mixed with air can easily explode when exposed to sparks.
5. During the transportation, storage and installation of the gas meter, care should be taken to prevent it from hanging upside down and entering water.
6. The gas used should meet the requirements of national standards and contain no moisture. Condensation in the gas can freeze the countertops and prevent proper operation
7. In order to prevent condensed water from entering the gas meter, the gas meter should be installed horizontally at the height of the pipeline. When installing, pay attention to the arrow on the top of the casing to indicate the gas flow direction.
8. The gas meter should be installed in a dry and ventilated place. It is strictly forbidden to install gas meters indoors
Bedrooms and bathrooms should not be installed in places where the gas meter is severely corroded.
9. When the pipeline system leaks, it is strictly forbidden to leak with open flame. During ignition, the air in the gas
The meter must be discharged to prevent an accident
10. In case of failure, please do not disassemble it by yourself, please consult the technicians of the gas company
maintain.
11. In case of gas leakage, the valve at the front desk should be closed first, and the doors and windows should be opened immediately for ventilation.
12. Do not use an open flame to detect leaks, be careful to use soapy water to detect leaks.
13. The instrument cannot be cleaned with strong caustic soda gasoline alcohol solvent.