Real Real needs. solutions. Qalcosonic W1 DN25-50 Smart ultrasonic water meter Application Ultrasonic water meter QALCOSONIC W1 is designed for accurate measurement of cold and hot water consumption in households, apartment buildings, and commercial premises. • Static method of water flow measurement, no moving parts. • High accuracy calculation of water consumption. • Eliminates measuring deviations caused by sand, suspended particles or air pockets. • Long-term measurement stability and reliability. • 9 digits, multi-line LCD. Total volume and instantaneous flow rate indication. • Sensitive and accurate in low flows, down to 3 l/h. • Ready for AMR with NFC, wM-Bus, LoRa and NB-IoT technologies. • NB-IoT (CoAP) NFC and optical interfaces are integrated into the top panel of the meter. They can be used for data reading and parameterisation of the meter. • LoRa WAN compliance certificate • ICIM (Italy) Technical features Nominal flow Wide measurement range No straight pipe sections required before or after the meter Installation in any position No measurement of air Electromagnetic environment class E2 Mechanical environment class M1 Nominal pressure PN16 (PN25 for flange version) Internal datalogger Maintenance free device, battery lifetime up to 16 years1 Bi-directional flow measurements Flow direction indication Meter parameterisation and archive reading via NFC or optical interface Durable composite body

Data logger - history values Hourly, daily, monthly values of the measured parameters are stored in internal memory. LoRaMHir Radio interface Integrated radio communication allows data reading via wM-Bus telegram: 433 MHz or 868MHz OMS T1 mode, LoRaWAN or NB-IoT. Multiple alarms and events, including: • Flow direction indication; • Battery level indication; • Empty pipe; • Radio communication; • Warning indication; • Low-temperature warning. Technical data: Water temperature Flow Measurment direction Volume units RF active Burst Battery indicator Flow measurement Protection class [IP] IP68 Environmental...

Pressure loss class Ap, bar x 1002 Ap16 Ap16 Ap16 Ap16 Nominal flow rate 25,0 Starting flow rate, m3/h 0,016 Maximum flow rate Q4, m3/h 31,25 Pressure loss class Ap, bar x 1002 Ap25 Size & dimensions: * - T30 temperature class only - T30 temperature class only - for direct flow, without optional strainer