Valve-Controlled Ultrasonic Water Meter

Power supply

1. Wired communication: Powered by built-in 3.6V/ER18505 lithium battery

2. Wireless communication: Powered by built-in 3.6V/ER26500 lithium battery + lithium-ion capacitor

power dissipation

less than 0.25 mW

Battery life

Under normal operating conditions [room temperature 20°C, relative humidity: less than 60%], the battery life exceeds 6 years.

communication mode

1. Wired: MUBS, RS-485

2. Wireless: Bluetooth, NB-IOT, LORA, and GPRS with self-scheduled periodic reporting

3. Infrared: Optical interface

Communication baud rate

Baud rate: 1200~9600 bps, even parity, 8-bit data bits, 1-bit stop bit

protocol

Supports 188 protocol, Modbus protocol, European standard protocol, and custom protocol

power-off protection

After a power outage, the system retains pre-outage recorded cumulative flow data, corresponding timestamps, and historical records, automatically resuming normal operations upon power restoration.

Environmental grade

Class O, ambient temperature: -25°C to 55°C (fluid water temperature not less than 0.1°C); atmospheric pressure: 86 kPa to 106 kPa

electromagnetic environment

Level E1: Electromagnetic Environment for Residential, Commercial, and Light Industrial Applications

External protection rating

IP68