The IUWS ultrasonic water meter guarantees reliable recording of the meter data for individual consumption billing in the residential or domestic water sector.

The IUWS is equipped with a 9-digit LCD display. The integrated radio interface is preset at the factory to wireless M-Bus (OMS) or LoRaWAN®. If required, this can also be changed at a later date. All variants are approved for any installation and are therefore also available in the usual lengths for riser and downpipe installation. A head-down mounting is also possible. All materials, which are used in the drinking water section, comply with the required standards, guidelines and the
current German drinking water approval (other country-specific drinking water approvals on request).




  • Switchable radio technology
  • Highest precision and reliability even in case of low flow rates
  • Protection class IP68
  • Insensitive to deposits and particles
  • No straight inlet or outlet needed (U0/D0) according to OIML R49 and DIN EN ISO 4064
  • Electronic, battery powered LCD register with NFC interface
  • Smart Metering functions
  • Alarm and statistic functions
  • Galvanically separated NFC interface
  • Battery life up to 15 years (depending on configuration and environmental conditions)
  • Approved in accordance with MID (2014/32/EU)
  • OMS certification for BSI-compliant smart meter gateway connection
  • Plug and play detection of radio technology via NDC radio module
  • Configuration-App


  • For consumption measuring of drinking water and unpolluted service water up to 50 °C


AMR options

  • Integrated wM-Bus or LoRaWAN® radio interface
  • NFC interface (=Near Field Data Capture) for connecting an external NDC module and for device configuration

Readout options of the measuring device via the NFC interface (Near Field Communication)

  • Measuring instrument ID (serial number)
  • Current (balanced) consumption display or Total volume in case of an overflow
  • Date / Time
  • Firmware version
  • Up to 15 previous month’s values
  • Temperature
  • Key date / Key date volume
  • Forward flow volume / Return flow volume
  • Alarms or error messages
  • Battery end

Product Options

Measuring Principle Ultrasonic Meters
  • Electronic
Nominal Diameter DN (mm)
  • DN 15
  • DN 20
  • DN 25
  • DN 40
  • DN 50
  • DN 32
Temperature Cold water up to 50° C
Housing MaterialMetrological Class horizontal (max.) R 500
Operating pressure (max.) MAP 16
Communication Technologies
  • Radio via LoRaWAN®
  • Radio via wireless M-Bus