Ultra

so

nic

Me

ter H

OW

RESIDENTIAL WATER METER –

HOW

Water Solution Partners

INTRODUCTION

1

The HOW Meter is the new revolutionary, precise and super reliable ultrasonic water meter. Our meters

are in compliance with the IS0-4064 GBT 778 standards. The water meter counts with an advanced

transit-time measurement technology with remarkable features of low power consumption, wide

measuring range ratio and a stable and reliable measurement.

Each components are IP68 protection class to ensure long term operation even though the meter is

submerged in water. The meter applications include urban water supply, water resources management,

irrigation ,landscape management, residential, commercial and industrial production,

consumption and automation.

FEATURES

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Three unique aspects that make our product stand out as the most reliable in the industry are:

Water Resistant

• Designed to work up to 2 meters deep under

water.

• Complete inspection of the meter's protection

box has been to done to guarantee that there

are no leaks in any of its points.

• All seals are made of silicone rubber

material.

• Type of protection: Class IP68

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FEATURES

Consistency and Hardness

• The cover is made of 6mm thick tempered glass with shell

wall thickness of 3mm. It is made of automobile grade

plastic, anti-ultraviolet, anti-high temperature and low

temperature (-20 ℃ ~ 100 ℃), anti-aging, anti- 2 meters

high free fall does not damage), anti-bad whether.

• The key components are made of metal to ensure

durability.

• Ultrasonic measurement, without rotation, or moving

parts.

Long lifespan

Built-in four lithium batteries, the total capacity of 1440

0mAh, 15-year no need of replacement battery

Technical Characteristics

• Can automatically analyze and judge the problem of pipeline leakage

• With the remote control valve can be achieved wireless automatic pipe

explosion alarm, automatic valve closure.

• Initial flow rate：1-2L/h -0,0002 m3/h

• Minimum flow rate：15L/h，

• Drip measurement, and small flow measurement without influence by any

conditions.

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SPECIFICATIONS SHEET

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Parameters Unit DN 15 DN 20 DN 25

Nominal Diameter

Overload flow Rate Q4 m³ /h 3.125 3.125 3.125 3.125 5 5 5 5

Permanent flow Rate Q3

m³ /h 2.5 2.5 2.5 2.5 4 4 4 4

Transition Flow Rate Q2

m³ /h 0.025 0.016 0.016 0.025 0.04 0.0256 0.256 0.04

Minimum Flow Rate Q1

m³ /h 0.015 0.01 0.01 0.015 0.025 0.016 0.015 0.025

Q Initial m³ /h 0.002

Size mm 130x117x77 130x117x77 160x117x77

Thread Connection inch G3/4B G1B G1-1/2B

Pressure Lost at Q3 ΔP40

Dynamic Range R160, R250 (Optional)

Water Pressure Rate MAP10, MAP16 (Optional)

Median Temperature Range °C 1-50

Accuracy Class 2

Environmental Class Class C

Protection Class IP68

Measurement Cycle S 0.25

Battery 4 Lithium batteries (ER18505), each with 3800mAh of capacity, Voltage 3.6V

Battery lifespan Year 6, 10, 15 (Optional)

Display Content Flow accumulation (m³ /h) Instant flow (m³ /h), Medium Temperature (°C)

Max Reading m³ 999999.999

Minimum Reading m³ 0.00001

Instant Flow Display m³ /h

0 ~ 5.000

Communication Mode M-BUS, LoRa Wireless (Optional)

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ULTRASONIC WATER METER INTERNAL STRUCTURE

cover glass

Sealing ring

Calculator holder

Calculator

Bottom shell

water meter pipiline

bottom cover

battery

information display

Mo

toriz

ed

Co

ntro

l Va

lve

(Wire

less)

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1

Wireless Remote Control Valve used with the HOW Ultrasonic Meter as part of the system for

remotely valve closure and opening.

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• The far infrared transmission of the wireless transmission is optional.

• The opening and closing of the valve can be controlled remotely

• You need two batteries, 10 years of useful life

• IP68 Class Protection

Nominal Diameter DN15 DN20 DN25

Size mm 110x78x97 110x78x99 110x78x135

Thread Connection G3/S G1B G1¹kB

Hole Diameter mm 15 20 20

Nominal Pressure Mpa 1.6

Protection Class IP68

Battery Two sets of Lithium Batteries (ER18505)

Battery Lifespan Year 10

Valve Type Stainless Steel Ball Valve

Material Bronze

Switch reaction time S <15

Communication Mode Infrared / LoRa Wireless (Optional)

INTRODUCTION

FEATURES

SPECIFICATIONS SHEET

Co

nce

ntra

tor

Water Solution Partners

2

The STE wireless hub consists of:

• A 433Mhz wireless module,

• GPRS / 3G / 4G module,

• MCU,

• Internal storage and software.

The Up Link receives the data from the water meters which is transmitted through the

public internet network, such as GPRS, 3G, 4G, etc., and then is sent in the form of the

Down link to the server in the control room.

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• Auto-configuration with the Server IP port and network operation parameters.

• Automatic data management and filter.

• Reliable wireless communication with smart water meters.

• It can manage up to 3500 meters.

• It can be configured to read the meters in total or partially, it with the purpose of

optimizing the battery consumption.

• Able to manage 1000 control commands in real time. These commands include the

constant checking, elimination, and increase of parameters as necessary, by

individual meter or all water meters installed in a specific area.

• The use of DLL (Dynamic Link Library) helps to promote modularization, reuse of

codes, efficient use of memory and reduction of disk space. Therefore, the operating

system and programs can be loaded and ran faster taking less space on the

computer.

INTRODUCTION

OPERATION

FEATURES

3

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• GPRS, 3G, 4G communication path.

• Wireless communication with portable reader.

• Communication distance: More than 3 Km with LoRa terminal.

• Meter Reading Accuracy : 98% in constant transmission and 100% daily transmission.

• Protection class: IP65

• Power source: AC 110-220V, 50HZ, can also receive solar power supply.

Communication Frequency 433 MHz

Receiving Sensitivity -148dbm

Voltage AC/DC：110/220V，Industrial Power Supply

Receiving currents 17mA

Transmitting power 100 mW

Sleep current 1.6uA

Communication Distance Distance from meter ≤ 3000m；

Frequency point 433MHz/470MHz/868MHz/915MHz

Supporting frequency 137 – 1020 MHz

Working Temperature -40℃～+80℃

Working Humidity 10%～90% RH

Frequency Stability ±2.5PPM

Module 433

Interface rate 1200 - 115200 bps

Frequency GSM850/900/1800/1900MHz

Voltage 3.3-4.8VDC

Max Transmitting power ≤2W

Working temperature -30℃～+75℃

Module GPRS/3G/4G

PRINCIPAL FUNCTIONS

TECHNICAL SPECIFICATIONS

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Concentrator

-· GPRS

"'····..... Server

··...

..........

PC

"=• '"

Mobile APP

- Mbus Communication

Wireless Communication

Wireless/ Mbus

Communication

Infrared Communication

Infrared Communication

SYSTEM COMPONENTS

• Ultrasonic Meter

• Wireless Control Valve

• Concentrator;

• Data receiver,

• Repeater

• Server

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