The water meter is a horizontal dry dial woltmann cold water meter designed for measuring flows of cold potable water. It is a high reliable measurement instrument, which complies with OIML R49/ISO 4064/EN 14154 standards.

Measuring range of water meter is R160, Material of meter body is cast iron.

lMechanical characteristics

Items	Parameters
Nominal diameter(mm)	50	65
Overload flow rate Q4(m3/h)	50	50
Permanent flow rate Q3(m3/h)	40	40
Transitional flow rate Q2(L/h)	400	400
Minium flow rate Q1(L/h)	250	250
Q3/Q1	R160
Accuracy class	Q1≤Q＜Q2：±5% Q2≤Q≤Q4：0.1℃≤T≤30℃：±2% T＞30℃：±3%
Types of Indicating device	0~999999.999m³
Temperature class	Cold:T50
Water pressure class	MAP 10（10bar），MAP 16（16bar）
Pressure-loss class	Δp40（0.4bar）, Δp63（0.63bar）
Body Material	Cast Iron
Filter Material	SS
Installation position	H
The installation sensitivity class	U0/D0

Notes：Metrological characteristics are in accordance with ISO4064:1993(Class B)

Items	Parameters
Nominal diameter(mm)	50	65
Overload flow rate qs(m3/h)	50	50
Permanent flow rate qp/qn(m3/h)	25	25
Transitional flow rate qt(m3/h)	5	5
Minium flow rate qmin(m3/h)	0.75	0.75
Class of measurement	Class B
Accuracy class	qmin≤q＜qt：±5% qt≤q≤qs：0.1℃≤T≤30℃：±2% T＞30℃：±3%
Water temperature	Cold：≤50℃
Water pressure	PN :1.0MPa/10bar，PN :1.6MPa/16bar
Pressure-loss	ΔP≤0.1MPa@qs

lValve characteristics

Items	Parameters
Nominal diameter(mm)	DN50/DN65
Type	Ball valve
Body Material	Copper
Pressure Class	PN16
Valve lifetime	≥10000 times(typical)

lElectronic characteristics

Items	Parameters
Power Source	Lithium battery(replaceable)
Battery Voltage	3.6 V
Battery Lifetime	≥ 6 years
Card lifetime	≥100000 times
Communication Interface	M-Bus/RS-485: Wireless M-Bus LoRaWAN
Electromagnetic and Environmental class	E1，B
Work Environment	0~50℃，≤93%RH
IP Code	IP68

Key Features

lDN50-DN65, Woltmann, Super dry

lOIML R49/ISO 4064/EN 14154 Standard

lR160，MAP16, T50,ΔP63

lSeparation design of water meter and valve

lTouch key,Large size LCDand backlight

lNon-contact M1/NFC CPU/JAVA card prepaid(ISO/IEC 14443A) or STS4/6 prepaid(IEC62055-41)

lAMR/AMI(RS485/M-Bus, Wireless M-Bus, LoRaWAN) communication

lPrepayment, AMR/AMI, Prepayment +AMR/AMI

lIP68 protection of the whole meter

Main Functions

Prepaid Functions

lSupport prepaid/postpaid mode, and it can be switched

lM1/NFC CPU/JAVAcardprepaid(Optional)

lSTS prepaid(Token Carrier: RF card or UIU)(Optional)

lMax.16 steps of water tariff

lAnti-storage , Insufficient water warning ,Self-defined overdraft

Communication

lWired M-Bus /RS485

lLoRaWAN,EU433MHz/EU868MHz/US902-928MHz

lWireless M-Bus(EN13757.4),Walk-by/Driver-by

lProtocol: EN13757.3, DLMS/COSEM,MODBUS-RTU

Advanced Functions

lEmergency water，Holidays Management，Non switch-off during off-duty

lMonthly free consumption water

lCollect taxes and fee by water charges

Alarm and Event logs

lAnti-magnetic，Low-Battery detection & log

lWater return, meter reversal and meter stop detection & log

lLeakage (continuous water use, valve failure, etc.) detection & log.

lAnti-tamper(open cover, open battery cover,tilt, etc.) detection & log

lHistory data, such as hourly data, daily data, monthly data, etc.

lEvent log, such as top-up, valve open/close, etc.

Security

lData encryption, AES-128, STS.

lCommunication security.

Certificates

lISO4064

lSTS

lIP68

Dimensions