Introduction

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.

IoT Ready

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.