EMG Uv Valve-Controlled Ultrasonic Water Meter, a high-performance, battery-powered solution tailored for domestic water flow measurement. Engineered in strict compliance with international standards ISO 4064:2019 and OIML R49:2013, this meter guarantees reliability and accuracy for cold and hot potable water applications, making it an ideal choice for residential use.

Available in three nominal diameters—DN15, DN20, and DN25—it adapts to diverse home plumbing needs. Boasting an impressive R value (Q3/Q1) of 400 (with selectable ranges from R250 to R800), it delivers precise measurement across flow rates: Q4 reaches 3.125 m³/h (DN15), 5 m³/h (DN20), and 7.875 m³/h (DN25), while maintaining strict error limits—±5% from Q1 to Q2, and ±2% from Q2 to Q4 for T30 class 2 accuracy. Pressure loss stays below Δp63 at Q3, ensuring smooth water flow without disruption.

User-friendly by design, it features a 10-digit display showing key data (total consumption, flow rate, water temperature, flow direction, and warnings) and a photosensitive menu switch for easy operation. The meter supports flexible installation in any position, with optional brass or stainless steel 304 bodies for durability. It thrives in harsh conditions too—operating temperature ranges from 0.1℃ to 50℃ (water) and -30℃ to 70℃ (ambient), with IP68 protection against moisture.

Smart connectivity enhances its utility: it comes with NB-IoT as standard, plus selectable LoRa/LoRaWan, RS485, or pulse output for remote monitoring. Near-end functions include pulse calibration (P1-JJ) and infrared for reading/writing (P2-AC). Powered by a 3.6V lithium battery, it offers a lifespan of over 12 years with daily communication, and a low-battery warning ensures uninterrupted use.

For reliable, smart, and long-lasting domestic water metering, the EMG Uv stands out as a top-tier choice.