Dasmesh Ultrasonic Water Meter is a new type of water meter that detects the time difference caused by the change of the speed when the ultrasonic beam propagates in the opposite direction of the water, and analyzes and processes the flow rate of the water to further calculate the flow rate of the water.
Dasmesh Ultrasonic Water Meter is a device used to measure the velocity of flow by using the principle of ultrasound. It can measure the average velocity along the path of an emitted beam of ultrasound by averaging the difference in measured transit time between the pulses of ultrasound propagating into and against the direction of the flow. The flow measurement is based on an acoustic wave time of flight principle. The Flowmeter body is equipped with 2 ultrasonic transducers facing 2 acoustic reflectors.
DWM supports IoT ready wireless communication interfaces which are suitable for any type of installation environment, e.g. LoRaWAN or NB-IoT. The data transmission frequency is every 24 hours. Wireless Remote Reading Solution offers reliable remote meter reading solutions with accurate measuring. Utilities no longer need to send engineers on site to read the meter manually. With wireless technology, meter data is uploaded to server automatically on each billing date. With this solution, utility save significant expenditure on installation cost, meter reading labour cost and avoid mistakes in the meter reading. This solution is widely used worldwide on various types of meters.
The LoRaWAN and NB-IoT standards are both part of a larger family of technologies known as LPWAN (Low Power Wide Area Networking).
LoRaWAN is an open protocol offered by the LoRa alliance that uses unlicensed spectrum, allowing almost anyone to set up their own networks at a low cost.
NB-IoT is a licensed protocol from the standards organisation 3GPP offered through the licensed RF spectrum, making it available only through established mobile network operators.
The ULTRIMIS W is an ultrasonic water meter with many patented design and technological features, such as the proprietary "W-Sonic Technology" ultrasonic measuring method. None of the materials in contact with water used for the construction of this meter contain heavy metals. The standard version of this water meter is fully waterproof.
| Diameter | Permanent Q3 (m³/h) | Transitional Q2 (m³/h) | Minimum Q1(m³/h) | Overload Q4 (m³/h) | mm | Pulse Equivalent (L) |
| DN40 | 32 | 0.208 | 0.120 | 40 | 200 | 10 |
| DN50 | 40 | 0.256 | 0.160 | 50 | 200 | 10 |
| DN65 | 63 | 0.403 | 0.252 | 78.75 | 200 | 10 |
| DN80 | 100 | 0.640 | 0.400 | 125 | 225 | 10 |
| DN100 | 160 | 1.024 | 0.640 | 200 | 250 | 10 |
| DN150 | 250 | 1.600 | 1.000 | 312.5 | 300 | 10 |
| Measurement | Q2≤Q≤Q4 ±2% | |||||
| Accuracy | Q1 ≤ Q ≤ Q2 ± 5% | |||||
| Range Ratio | Q3 / Q1= 250, Q2 / Q1=1.6, Q4 / Q3=1.25 | |||||
| Connection | Flanged Joint | |||||
| Pressure Loss | Δp40 | |||||
| Pressure Level | MAP10 or MAP16 | |||||
| Data Storage | Data storage for continual 18 months | |||||
| Power-off Protection | the data of accumulated flow and corresponding time will be saved once power failure takes place, and the meter works automatically as soon as the power restoration | |||||
| Remote Transmission | Standard Infrared, M-bus Remote Transmission (RS485 can be customized), Pulse Output, 4- 20mA Output | |||||
| Power Supply | Lithium Battery Power Supply /M-BUS Remote Power Supply | |||||
| Protection Class | IP68 | |||||
| Work Environment | Temperature:- 25°C~+55°C Environment Relative Humidity < 90% | |||||
| Installation | Horizontal or Vertical | |||||
| Service Life | lifetime≥6 years | |||||