What is Residential Ultrasonic Water Meter?
Residential ultrasonic water meter is a device that uses ultrasonic technology to measure water flow and is widely used in household water metering and display. This water meter calculates the flow rate of water by emitting ultrasonic pulses and measuring the time difference of these pulses propagating in water, thereby accurately measuring the volume flow rate of water.
BMAG Residential Ultrasonic Water Meter
As a professional water meter manufacturer, BMAG’s best-selling residential ultrasonic water meter is the DN25 ultrasonic water meter, which has the following features:
- Equipped with an electric control valve, it can be remotely shut off.
- The pressure difference (water pressure loss) is small, only Δ40 (mechanical water meter pressure difference Δ63).
- High accuracy R400 (mechanical water meter pressure is generally R80-R160).
- Waterproof level IP68.
Features and Advantages of Residential Ultrasonic Water Meter
1. Residential ultrasonic water meter has no moving parts, so it is not easy to wear, has low maintenance requirements and has a long service life.
2. Ultrasonic water meter is able to provide high-precision flow measurement, and its performance will not degrade over time.
3. Many residential ultrasonic water meters support multiple communication interfaces, such as NB-IoT, LoRaWAN, Bluetooth, etc., which are convenient for remote monitoring and data transmission.
4. Ultrasonic water meters are able to detect very low flow rates, about 5 to 10 liters per hour (L/hr), which is equivalent to approximately 0.083 to 0.167 liters per minute (L/min). This can effectively reduce the omitted record of water usage caused by not closing the tap and other water-using equipment in household water management.
5. In order to prevent illegal operations, many ultrasonic water meters adopt tamper-proof designs to ensure the accuracy and security of data.
Disadvantages
1. Compared with traditional mechanical water meters, ultrasonic water meters usually have higher initial costs. This is mainly due to the advanced technology involved in their design and manufacturing.
2. Ultrasonic water meters are easily affected by bubbles, impurities, etc. in the medium during measurement, resulting in unstable measurement results, especially in transit-time water meters. In addition, if the installation position is improper or there are electric and magnetic fields in the surrounding environment, it may also affect its accuracy.
3. The installation process of the ultrasonic water meter is relatively complicated. It is necessary to ensure that the water flow direction is correct, and filters and valves may need to be installed to ensure the accuracy of the measurement.
Residential Ultrasonic Water Meter Installation Requirements
Installation environment requirements:
The installation environment should avoid the influence of adverse factors such as direct sunlight, strong magnetic fields, chemical corrosion and electromagnetic interference, and should be away from high and low temperature extreme environments to ensure the normal operation and long-term stability of the water meter.
The installation location should be selected in a place that is easy to disassemble and maintain, and avoid installation in areas with large vibrations or near equipment such as pumps to prevent unstable water flow from affecting the measurement accuracy.
Pipeline requirements:
The pipeline system must be thoroughly cleaned before installation to ensure that the pipeline must be kept clean and avoid the presence of debris, bubbles or sediments to avoid affecting the propagation of ultrasonic signals.
The ultrasonic water meter should be installed on a straight pipe section, with a straight pipe section of at least 10 times the pipe diameter required upstream and a straight pipe section of 5 times the pipe diameter required downstream to ensure smooth fluid flow and improve measurement accuracy. Some more advanced ultrasonic water meters, such as BMAG’s ultrasonic water meters, can achieve U0 D0, which reduces the length required for the upstream and downstream pipe sections in the installation position.
Installation direction:
The arrow mark of the ultrasonic water meter should be consistent with the direction of water flow, ensuring that the water flows from upstream to downstream of the meter body.
The meter body can be installed horizontally or vertically, but the sensor surface must be parallel to the center line of the pipe and the water flow should not directly impact the sensor surface. If installed on a vertical pipe, the water flow direction from bottom to top should be selected.
Electrical and mechanical protection:
During installation, ensure that all cables are firmly connected to avoid crossing with other power lines to prevent electromagnetic interference.
The water meter should have a good protection level, such as IP68, to prevent environmental influences such as water immersion.
Residential Ultrasonic Water Meter vs Mechanical Water Meter
Residential ultrasonic water meters and mechanical water meters are two widely used options in residential water metering. Some users often get into trouble in choosing between them. The following table provides a brief comparison between the two:
| Feature | Ultrasonic Water Meter | Mechanical Water Meter |
| Measurement Principle | Uses ultrasonic waves to measure flow. | Measures flow using mechanical parts like impellers. |
| Accuracy | High accuracy, especially for low flow rates. | Moderate accuracy, may struggle with low flows. |
| Durability | No moving parts, less wear and tear, longer lifespan. | Subject to wear and tear due to moving parts. |
| Maintenance | Minimal maintenance required. Need to replace the battery per 6-8 years. | Requires periodic maintenance and calibration. |
| Power Requirement | Requires a power source or battery for operation. | No external power required, operates mechanically. |
| Cost | Higher initial cost. | Lower initial cost. |
| Application Suitability | Ideal for modern smart metering and precise measurement. | Suitable for basic applications with lower precision. |
