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Quick Details

Brand Name: Highwell Electronic
Voltage: DC3.6V
Measuring Range: R250
Accuracy Class: Class 2
Display Type: LCD
Place of Origin: China (Mainland)
Nominal Diameter: DN15-DN40
Temperature Class: T30/T50/T90(optional)
Communication Interface: RS-485/M-Bus/Infrared/NB-IoT/LoRa/Cat1/TTL/LoRaWAN(optional)
Protection Class: IP68

Specifications

DN15DN40 Ultrasonic Water Meter R250 Household Smart Water Meter NBIoTLoRaWANRS485MBus

Features

1.Uses picosecond-level high-precision metering chips, providing low starting flow, wide measurement range, high accuracy, and the ability to measure even the smallest drops of water.
2.the electronic components are fully sealed, offering waterproof, moisture-proof, dust-proof, dirt-proof, and sand-proof characteristics.
3.Can store 24 monthly records, 360 daily records, and 192 hourly records. Data can be preserved for a long time even after power loss.
4.Real-time monitoring of battery, temperature, and flow. In case of low battery voltage, transducer abnormalities, or non-full pipe (empty pipe) conditions, the system has the capability to detect, record, and alert. the screen will display corresponding prompts.
5.Multiple communication options are available (infrared, RS-485, M-Bus, NB-IoT, LoRa, Cat1, TTL, LoRaWAN, etc.) to enable centralized meter reading, parameter setting, and other functions.
6.Optional valve control function for remote valve operation.
7.Supports remote online upgrades at the meter end, continuously meeting new requirements for the water meter and addressing user concerns.


Technical Parameter

Performance Parameters
Nominal Diameter Q3/Q1 Starting flow
QS (L/h)

Minimum flow rate

 Q1 (L/h)

Transition flow rate 

Q2 (L/h)

Permanent flow rate
Q3 (L/h)

Overload flow rate

 Q4 (L/h)

DN15 R250 2.4 10 16 2500 3125
DN20 R250 4 16 25 4000 5000
DN25 R250 6.4 25 40 6300 7875
DN32 R250 10.2 40 64 10000 12500
DN407 R250 16 64 100 16000 20000
Performance Parameters
Measured Medium Domestic water (other liquids require customization) and must fill the pipe
Operating Voltage DC3.6V (non-rechargeable lithium battery)
Accuracy Class Class 2
Q3/Q1 R250
Nominal Diameter DN15DN40
Maximum admissible Pressure 16 bar
Environmental Class Class O
Temperature Class T30/T50/T90(optional)
Upstream Flow Field Sensitivity Class U10
Downstream Flow Field Sensitivity Class D5
Electromagnetic Environment Class Class E1
Communication Interface RS-485/M-Bus/Infrared/NB-IoT/LoRa/Cat1/TTL/LoRaWAN(optional)
Protection Class IP68
Button Touch button


Outline Dimension
DN15DN40 Ultrasonic Water Meter R250 Household Smart Water Meter NBIoTLoRaWANRS485MBus
Nominal Diameter Length L (mm) Width W (mm) Height H (mm) Thread Diameter D (mm)
DN15 165 98 109 G3/4B
DN20 195 98 116 G1B
DN25 225 98 125 G1 1/4B
DN32 260 98 132 G1 1/2B
DN40 300 98 144 G2B