♦ 20 coordinate points to describe the river’s shape of cross section. ♦ One instrument can measure the velocity, depth and conductivity at same time. ♦ Velocity Range : 0.02mm/s to 10m/s bi-directional, accuracy is 1% and the depth Range: 0 to 10m. Depth is measured by both the pressure sensor and ultrasonic level sensor principles. ♦ Measure velocity in both forward flow and back flow. With coordinate correction and pressure compensation function. ♦ IP68 Epoxy-sealed body design, long time under water. ♦ RS485/MODBUS output, can contact computer directly.