Transit-time ultrasonic water meter

Dynameters ultrasonic waterflow meterutilize State-of-the-Art transit-time digital signal processing technology and cross-correction technology, feature high reliability, good stability and high accuracy in all industrial environments. The meter with rugged construction has no moving parts and does not require external power to operate the transmitter display. The self contained battery has a life of 6 yeas. An optional externally power supply for 4-20mA, OCT, RS232/485 output is available. The configurations of meter parameters are completed in the factory and the only thing left to do is to install them and take readings. The meters have the same installation dimensions as industrial mechanical water meters making them completely interchangeable.FEATURES: 1.Integral transmitter suitable for harsh environments. 2. Low maintenance no moving parts or flow obstructions translates into long-term stability. 3. Very low minimum measurable flow velocity (0.003m/s). 4. Fast response to flow rate changes. 5.Battery powered operates for 6 years. 6.Unique housing design, rated to IP67. 7.Flange/body formed as one integrated piece reduces possibility of leakage. 8.On-board self-diagnostic function and fault indicator. APPLICATIONS: 1. Process control and instrumentation. 2. Replacing high maintenance mechanical flow meters. 3.Measure instantaneous and total flow rates in water networks. *Notes: Battery lifetime for DN32 DN125 is 5+1 years,for DN150 DN1000 is 2+1 years. TECHNICAL SPECIFICATIONSITEMSDESCRIPTIONSAccuracy Conforms to EN1434 Class 1; Better than 1.0% (R); Class B according to ISO4064-1 Linearity +/-1.0% Reading of accuracy (≥0.3 m/s; if <0.3m/s ,+/-3.0% 5.0% Reading) Repeatability Better than 0.2% Sensitivity/Dead band 0.003m/s Actual Turndown Ratio 20:1 (Operable turndown 3000:1) LCD display Large Top Mounted Circular Display, display total flow, flow rate, and velocity etc.. Display version Compact type as standard. Distributed version also available, max. calble length 10m. Positive, Negative Flow Totals Bi-directional flow totalizer (+ and -) Output Flow rate 4 20mA output (Optional) Total flow pulse (open-collector output) Data interface (Optional) RS232,RS485,M-Bus,ModBus, and GPRS wireless module Data logger Maintains data history (i.e. totalizer values, working time etc.) For up to 35 months Data is automatically saved if power supply is cut. Power Supply High power lithium battery(6 yrs life), 9 30VDC required for out put options (i.e. 4 20mA, RS232/485, ModBus, OCT, GPRS wireless module). Velocity range 0.01 12.00m/s Ambient temperature limit 0°C 65°C (for meter) Process temperature fluid -20 120°C (-4.0 250F)