Sourcing Requirements
Subject RFQ Ultrasonic Water Meters DN15 DN50 MID NB IoT Band 20 We are requesting and technical proposal for ultrasonic water meters with the following mandatory requirements Type Ultrasonic water meter no mechanical parts Sizes DN15 DN20 DN25 DN32 DN40 DN50 Application Residential and commercial water metering Installation Horizontal and vertical MID certified 2014 32 EU Compliance with EN ISO 4064 and OIML R49 Accuracy class Class 2 or better Dynamic range minimum R160 preferred R250 or higher Starting flow max 2 l per hour preferably 1 l per hour NB IoT 3GPP compliant Mandatory support Band 20 800 MHz EU SIM based communication no concentrator required Two way communication uplink and downlink Configurable reporting interval hourly or daily Remote firmware upgrade FOTA preferred Battery powered internal lithium battery Battery lifetime minimum 8 years target 10 years or more Low power modes PSM and eDRX Protection class IP68 Pressure rating PN16 or higher Operating temperature 0 to 55 C or wider Pressure loss max 0.063 MPa FUNCTIONALITY LCD display Leak detection Reverse flow detection Tamper alarm magnetic or opening Optional integrated shut off valve Data format documentation payload structure required API or platform integration capability Encryption AES128 or higher Required data fields cumulative volume instantaneous flow alarms battery status provide MID certificate module B and D or equivalent Test reports OIML R49 and ISO 4064 CE declaration of conformity Factory calibration procedure Branding OEM logo Custom firmware if required Packaging customization Unit price EXW and FOB Price tiers 100 PCS 1000 PCS 10000 PCS Delivery time Minimum order quantity MOQ Warranty terms 10 samples for testing Full technical documentation Configuration tools or software REFERENCES List of EU or international projects Installed quantities Customer references if available