Smart Metering · Water & Heat · DN15–DN600
VUSWM
VUSWM
Ultrasonic Meter for
Water and Heat
The VUSWM is a high-precision ultrasonic water meter and heat meter for the reliable measurement of water and heat volumes – from residential metering at DN15 to large-scale measurement at DN600. Designed for modern Smart Metering and AMR infrastructures with flexible connectivity and long-term operational stability.
MID certified · OIML R49 · EN 14154
VUSWM
Ultrasonic Water & Heat Meter
Water
Cold & Hot
Heat
District Heating
Nominal diameterDN15 – DN600
Dynamic rangeR250 – R800 (up to R800 opt.)
Measuring tubeStainless steel
Battery life13+ years
Data storage720 Tage
CommunicationNB-IoT (opt.) · LoRa · wM-Bus
Protection classIP68
DN600
Max. nominal size –
large-scale supply
large-scale supply
R800
Dynamic range –
highest accuracy class
highest accuracy class
13+ yrs
Battery life
maintenance-free
maintenance-free
720
days data storage
locally integrated
locally integrated
IP68
Protection class –
flood-proof
flood-proof
MID
Zertifiziert · OIML R49
EN 14154 · Drinking water
EN 14154 · Drinking water
Two variants – one platform
Ultrasonic Water Meter
Ultrasonic Water Meter
and Heat Meter. One system.
The VUSWM is available as an ultrasonic water meter for cold and hot water, and as an ultrasonic heat meter for district heating and building services – same platform, same connectivity, same service level.
Ultrasonic Water Meter
VUSWM Water
For precise consumption recording of cold and hot water –
from residential installation to large-scale industrial measurement DN600.
MID approved, drinking water certified.
MediumCold water / Hot water
Nominal diameterDN15 – DN600
Dynamic rangeR250 – R800 (up to R800 opt.)
Medium temperature0.1–50°C · opt. up to 90°C
CertificationMID · OIML R49 · Drinking water
ApplicationResidential · Commercial · Industrial
Ultrasonic Heat Meter
VUSWM Heat
For the measurement of heat quantities in district heating systems, heating networks
and industrial energy balancing. Cooling measurement also possible.
MediumHeating water / District heating
Nominal diameterDN15 – DN600
Dynamic rangeR250 – R800 (up to R800 opt.)
Temperature4–95°C (up to 130°C opt.)
CertificationMID · EN 1434
ApplicationDistrict heating · Building tech · Industrial
Measuring principle
No moving parts.
No moving parts.
No wear. Ever.
The VUSWM uses the ultrasonic transit-time difference method: two transducers send ultrasonic pulses with and against the flow direction. The transit-time difference is exactly proportional to the flow velocity – without any mechanical component in the measuring tube. The result: consistently high accuracy throughout the entire service life.
0 moving parts – no wear
No turbines, no impellers, no bearings. The measurement technology does not age with flow.
Measuring accuracy remains constant
Even after years in the field: no drift correction, no recalibration required.
Insensitive to particles
Sand, suspended solids and air bubbles do not affect the measurement – no clogging risk.
Low pressure loss
The straight stainless steel measuring tube produces minimal pressure drop – ideal for large nominal sizes.
Ultraschall-Measuring principle
Mechanical
Turbines · bearings · seals
Wear from day 1
Wear from day 1
VUSWM
No parts · no wear
Constant accuracy
Constant accuracy
One portfolio – all nominal sizes
From DN15 to DN600 –
From DN15 to DN600 –
one ultrasonic meter for every metering point.
No other ultrasonic water meter covers this nominal size range with a single unified system. From residential metering to large-scale water supply – same measurement technology, same connectivity, seamless integration.
DN15
DN25
DN50
DN100
DN200
DN400
DN600
DN15–25
RESIDENTIAL
Residential buildings, single-family houses, sub-meters, Smart Metering rollout
DN40–50
COMMERCIAL
Commercial properties, multi-unit buildings, districts
DN80–150
INDUSTRY · REFERENCE DE
Industrial plants, transfer points, network nodes. DN100 actively deployed in Germany.
DN200–300
LARGE-SCALE
Waterworks, transfer points, mandatory AMR large consumers
DN400–600
SUPPLY INFRA
Main supply pipelines, central network nodes, district heating mains
Technical advantages
Four properties that matter
Four properties that matter
in everyday utility operations.
The VUSWM was not designed for demo rooms – it was built for continuous operation at thousands of metering points, with minimal maintenance and maximum data availability.
01
Stainless steel measuring tube – the decisive difference
Robustness and durability that are decisive in demanding operating conditions –
especially for larger nominal sizes, aggressive water quality, industrial applications
and district heating. Drinking water certified.
Drinking water certified
02
Wide dynamic range R250–R800
Precise measurement at both very low and high flow rates –
decisive for accurate billing, leakage detection and network transparency.
No other ultrasonic water meter covers this dynamic range as standard.
Accuracy class 2
03
13+ years battery life – ultra-low-power measurement technology
13+ years of battery life, engineered for long-term operational stability and minimal maintenance, complemented by an integrated data memory with up to 720 days of storage for reliable historical analysis and billing security.
13+ years battery life || 720 days
04
Flexible communication – one platform, all protocols
NB-IoT for direct cloud transmission without gateway, wM-Bus for walk-/drive-by
and existing AMR systems, LoRa for long-range networks –
and combinations such as LoRa + wM-Bus for redundancy and hybrid networks.
Integration into VERILOG Dashboard or any existing backend.
NB-IoT · LoRa · wM-Bus · M-Bus · Modbus
Communication options
6 communication variants –
6 communication variants –
for every AMR infrastructure.
The VUSWM is available in all common communication variants – from direct NB-IoT cloud transmission to local M-Bus reading in existing systems. Hybrid variants provide redundancy and flexibility.
System Architecture
Metering point
VUSWM
Ultrasonic meter
Ultrasonic meter
→
Communication
NB-IoT · LoRa
wM-Bus · M-Bus
wM-Bus · M-Bus
→
Cloud / Server
VERILOG
or existing MDM
or existing MDM
→
Analysis
AMR · AMI
Billing · Monitoring
Billing · Monitoring
📡
Option NB2 · No gateway
NB-IoT
Optional communication variant (NB2) – direct transmission to the cloud without gateway, via existing mobile network. High building penetration, ideal for cellars and shafts.
🔗
Walk- / Drive-by
wM-Bus (Wireless M-Bus)
Established standard for Smart Metering. Optimal integration into existing
AMR systems. Reading via walk-by, drive-by or fixed network gateway.
📶
Long range
LoRaWAN
Ideal for large coverage areas, smart city infrastructures and public
networks with LoRa gateway infrastructure. Very low energy consumption.
🔀
Hybrid · Redundancy
LoRa + wM-Bus Kombination
Two communication paths in one device – for maximum redundancy in
anspruchsvollen Netzen. Standard-Auslesung via wM-Bus, Echtzeit-Monitoring via LoRa.
🔌
Wired
M-Bus / Modbus
Standardised fieldbus interfaces for reliable data acquisition in existing
wired infrastructures. For building automation and SCADA.
⚡
Existing systems
Pulse (S0/Reed)
Simple integration into existing systems via potential-free pulse output.
Compatible with all common data loggers and AMR gateways.
Alarm and monitoring functions
Display, local data storage (720 days)
Display, local data storage (720 days)
and intelligent alarm management.
The VUSWM is not just a sensor – it is an intelligent node in the AMR network with a local display, extensive data storage and active alarm management for all relevant operating conditions.
Integrated display – status overview
Consumption1.847,32 m³
Flow rate2,34 m³/h
Status✓ OK
Battery94%
Temp.14,2°C
LeakageNo alarm
720 daily · 36 monthly · 16 annual values stored locally
Leakage alarm
Continuous monitoring for abnormal flow behaviour – even at minimal losses. Immediate alarm transmitted to the control centre or VERILOG.
Temperature alarm
Threshold monitoring for medium temperature – relevant for frost protection,
hot water systems and quality assurance in district heating networks.
Reverse flow alarm
Detection and logging of reverse flow volumes – important for
network analysis, billing and detection of faulty installations.
Dry-runner & fault alarm
Automatic detection of dry running, tampering and communication failures,
with logging in the local data storage (720 days).
Technical specifications
Complete technical data
Complete technical data
for planning and tendering.
All relevant technical data for your evaluation, tendering documents and system integration. Detailed datasheet available on request.
Certification & Standards
Type approvalMID (Measuring Instruments Directive)
Standard waterOIML R49 · EN 14154
Standard heatEN 1434
Drinking water✓ certified (KTW / WRAS / ACS)
Protection classIP68
Nominal pressurePN16
Power & Data storage
Battery life13+ years
Power managementUltra-low-power
Data storage480 daily / 36 monthly / 16 annual
Display✓ integrated
Alarm functionsLeakage · Reverse flow · Temp. · Fault
Hydraulic data
Nominal diameterDN15 – DN600
Dynamic rangeR250 – R800 (up to R800 opt.)
Measuring tubeStainless steel
Measuring accuracyClass 2 (MID)
Temp. water0.1–50°C · opt. up to 90°C
Temp. heat4–95°C (up to 130°C opt.)
Communication
NB-IoTOption (NB2) · no gateway
wM-BusT1 / C1 · Walk-/Drive-by
LoRaWANEU868
LoRa + wM-BusHybrid variant
M-Bus / ModbusWired
PulseS0 / Reed
Application areas
Designed for modern
Designed for modern
water and heat networks.
The VUSWM ultrasonic water meter and heat meter is aimed at energy utilities, waterworks, district heating operators and Smart Metering managers – wherever precise measurement and automated data acquisition come together.
🏘
Reference · Municipalities + NB-IoT
Residential meter rollout with NB-IoT
Area-wide meter installation for municipal utility companies and municipalities.
DN15/DN20 ultrasonic water meter with integrated NB-IoT –
direct cloud transmission, no gateway, no manual reading.
🏗
Commercial & Properties
Apartment blocks & districts
Central consumption recording for residential complexes, business parks and campus.
Sub-meters for rent and operating cost billing. Remote reading without on-site appointments
– via wM-Bus, drive-by or NB-IoT.
🏭
Reference · DN100 Germany
Industrial large-scale water metering DN100+
Large-scale water meter DN100 actively deployed in Germany with NB-IoT.
For industrial plants, transfer points and central network nodes –
highest measuring accuracy with variable load profiles.
🌡
Heat & District heating
District heating & heat meter AMR
Automated heat quantity measurement for district heating networks, heating circuits
and energy-efficient building services. Cooling measurement and combined
energy balancing also possible.
🔍
Network monitoring & NRW
Non-Revenue Water & network optimisation
Continuous monitoring of network nodes to detect water losses (NRW).
Leakage alarm, reverse flow detection and minimum night flow analysis
for efficient network management.
🏙
Waterworks & supply
Main pipelines & transfer points DN200+
For central supply infrastructure from DN200. Mandatory AMR for large consumers,
transfer points and main distribution pipelines with
hourly load profile acquisition.
Field-proven installations
The VUSWM in active
The VUSWM in active
field deployment – two examples.
Reference · Municipal · Austria
Residential meter rollout for municipalities with NB-IoT
Area-wide installation of VUSWM ultrasonic water meters DN15/DN20
at municipal utility companies and municipalities in Austria.
Direct NB-IoT transmission to the VERILOG cloud – without gateway, without
manual reading, without monthly service calls.
Unified platform for all metering points of the municipality.
DN15 / DN20
NB-IoT direct
VERILOG Dashboard
Municipalities / Kommunal
No gateway
Reference · Industry · Germany
Large-scale water meter DN100 with NB-IoT in Germany
Industrial large-scale water meter VUSWM DN100 actively deployed in Germany.
Hourly load profile transmission via NB-IoT to a central monitoring system.
High measuring accuracy with variable industrial load profiles,
stainless steel measuring tube for demanding water quality.
Leakage and reverse flow monitoring active.
DN100
NB-IoT
Industry DE
Stainless steel
Leakage monitoring
VUSWM vs. mechanical meter
Why ultrasonic is the better
Why ultrasonic is the better
choice for modern AMR networks.
Mechanical meters are proven – but for Smart Metering, long service life and precise billing, the technology reaches its limits.
| Criterion | VUSWM Ultrasonic | Mechanical meter |
|---|---|---|
| Wear / maintenance | ✓ No moving parts | Turbines, bearings – wear from day 1 |
| Long-term accuracy | ✓ Constant over service life | Drift through wear unavoidable |
| Minimum flow | ✓ R800 – very low detectable | Start-up losses at low flow |
| Pressure loss | ✓ Minimal (straight tube) | Increased resistance through mechanics |
| Smart Metering connectivity | ✓ NB-IoT · LoRa · wM-Bus factory-fitted | Retrofit required, often limited |
| Leakage / reverse flow detection | ✓ Integrated alarm management | Not standard |
| Battery life | ✓ 13+ years | Depending on radio module |
| Integrated data storage | ✓ 720 days | Usually limited or not available |
| Stainless steelmessrohr | ✓ Standard | Usually plastic or brass |
Frequently asked questions
Technical questions –
Technical questions –
answered clearly.
How does the ultrasonic measuring principle of the VUSWM work?
The VUSWM uses the ultrasonic transit-time difference method: two transducers send pulses
with and against the flow direction. The transit-time difference is proportional to
flow velocity – without moving parts, without wear, with consistently high measuring
accuracy throughout the entire service life.
Which nominal sizes is the VUSWM available in?
From DN15 (residential meter) to DN600 (supply infrastructure) – a unified
portfolio on a single platform. Every size uses the same measurement technology,
connectivity and software integration.
Can the VUSWM also be used as a heat meter?
Yes. The VUSWM is available both as an ultrasonic water meter and as an ultrasonic
heat meter for district heating and building applications. Same platform, same
connectivity – temperature ranges depending on variant up to 130°C or 180°C.
Which communication variants are supported?
NB-IoT (no gateway, direct to the cloud), wM-Bus (walk-/drive-by, fixed network),
LoRaWAN, LoRa+wM-Bus hybrid, wired M-Bus/Modbus and pulse (S0/Reed).
All variants are factory-fitted – no retrofitting required.
How long does the battery really last?
13+ years under typical operation. 13+ years of battery life, engineered for long-term operational stability and minimal maintenance.
Is the VUSWM MID certified?
Yes. The VUSWM holds MID type approval (Measuring Instruments Directive) and
complies with OIML R49 and EN 14154 for water meters, and EN 1434 for heat meters.
Drinking water approval is certified (KTW / WRAS / ACS).
How much data does the VUSWM store locally?
720 days (2 years) of hourly values are stored locally in the meter.
This is critical in the event of communication failures: all data is automatically
re-transmitted after reconnection – no data gaps in the billing history.
How does the VUSWM integrate into existing AMR systems?
Via all common interfaces: wM-Bus for existing drive-by systems,
M-Bus/Modbus for wired infrastructures, NB-IoT for direct cloud integration.
Native integration into VERILOG Dashboard or any existing MDM/HES system via MQTT, HTTP, FTP.
Next step
Let us assess your metering points
Let us assess your metering points
together.
Whether residential meter rollout for municipalities, large-scale water meters DN100+ or heat meters for district heating networks: we support you with selection, dimensioning and integration of the right solution.
For energy utilities, waterworks, district heating operators and Smart Metering managers