Digital ultrasonic water meter DN50 DN65 DN80 DN100 DN150 ultrasonic flow meter RS485 IP68 T3-1-2-K Sandwich-type Ultrasonic Water Meter The highly integrated T3-1-2-K sandwich-type ultrasonic water meter is designed and manufactured strictly according to GB/T778.1-2007,ISO4064-1:2005 etc., based on ultrasound transit-time measurement technology. This series sandwich-type ultrasonic water meter is a new type of water meter specially designed for agricul tural irrigation, garden management and water resources monitoring. The water meter has some advantages,such as low cost, high measurement accuracy, low power consump tion, stable and reliable operation and so on. The thickness of the water meter is only 2 inches(50.8mm), which saves installation space, and the IP68 scheme is adopted for all parts, so that the water meter can be used in various harsh environment. The uniquestructure of the water meter makes the measurement basically free from the influence of water quality and pressure loss, which is a major breakthrough in the agricultural irrigation water measurement. Main Features: 1. Low initial velocity to 1 mm/s, low zero drift (value to be determined) 2. Display: multiple lines display simultaneously 9-bit long accumulator, 6-bit long instantaneous quantity, signal strength, battery status, flow direction, fault, communication status, etc 3. Flow unit selectable: cubic meter, American gallon, liter, cubic foot, acre foot 4. Operation: double capacitor touch button, support sliding operation 5. Output: optional 2-channel OCT outputs, which can simulate the double-pulse outputof mechanical water meter 6. Communication interface: independent RS485 and infrared interface. Baud rate selectable 2400, 4800, 9600 Optional MBUS interface, Lora/ NB-iot wireless communication and USART interface 7. Communication protocol: support MBUS, MODBUS, ASCII and CJ188 at the same time 8. Pipe diameter: DN50~DN150 9. Power supply: 3.6V4Ah disposable lithium battery power, >6 years of service life 10. In-field software upgrading: yes 11. Data retention time after power failure: 10 years 12. Technology applied: single channel ultrasonic principle, waveform analysis, correlation calculation, signal amplitude adaptive. Specification: Executive standard ISO 4064-2005GB/T 778-2007JJG 162-2009 Measuring fluid Water, raw water, sea water, and filled pipes Pipe diameter DN50~DN150 Accuracy 1% Fluid temperature 0.1~+30 Work environment Temperature: - 10 ~ + 45 ; humidity 100% RH Under pressure 1.6Mpa Communication interface RS485 / USART / IR Power supply Built in lithium battery (3.6V, 19ah) / external DC8 ~ 36V DC power supply / two wire 4 ~ 20mA power supply Protection level IP68 can work 2 meters underwater Local display Double line display includes 9-bit cumulant, 4-bit instantaneous flow, unit and various status prompts Data storage EEPROM / flash storage parameters are used to automatically record the cumulative flow of the first 128 months and the first 512 days Current measurement period Measurement status: 1 time / S; verification status: 4 times / s Power waste The battery can be used for more than ten years