Viewshine U-GR3 is a smart compact ultrasonic gasmeter which is suitable for installation in narrowspace and has internal valve with GPRS/LoRaWANcommunication.In its extended measuring range of 0.016~10m³h,U-GR3 keeps high level of accuracydue to its very sensitive ultrasonic sensor.Full elec-tronic measurement and temperature compensa-tion drive all combine to give superior accuracy andstability in meter's service life.
Technical Parameters
| Parameters | Unit | G1.6 | G2.5 | G4.0 | G6.0 |
| Nominal Measured Flow Qnom | m³/h | 1.6 | 2.5 | 4.0 | 6.0 |
| Maximum Measured Flow Qmax | m³/h | 2.5 | 4.0 | 6.0 | 10.0 |
| MinimumMeasured Flow Qmin | m³/h | 0.016 | 0.025 | 0.040 | 0.060 |
| Lowest Flow Rate Qstart | m³/h | 0.004 | |||
| Error -Qmin≤Q<0,1Qmax -0,1Qmax≤Q≤Qmax |
% | ±3.0 ±1.5 |
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Maximum Working Pressure Pmax |
kPa | 15 | |||
| Pressure Loss at Qmax | Pa | ≤200 | ≤250 | ||
| Ambient Temperature tm | ℃ | -25 to+55 | |||
| Storage Temperature | ℃ | -30 to 60 | |||
| Power Supply | Li Battery | 10 Years Design Life 10 Years Metrological Battery |
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| In-and Outlet Pipe Screw | Inch | G3/4",G1" | |||
| Humidity | % | ≤95% | |||
| Protection Level | Class | IP65 | |||
| Overall Dimensions | mm | 236*97.4*95 | |||
| Medium | NG | ||||
| Mechanical Environment | Class | M1 | |||
| Electronical Environment | Class | E2 | |||
| Communication | GPRS/LoRaWAN | ||||
| Material of Meter Body | Steel | ||||
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