A new, portable logger for area-velocity flow surveys in sewers, open pipes and channels, Stingray is designed for municipal storm water, combined effluent, raw sewage, irrigation water and stream flow. The logger uses a submerged ultrasonic sensor to measure velocity and level in the channel. No calibration is required. It operates up to 4 years powered by standard Alkaline D-cell batteries. Electronics are housed in a watertight IP67 enclosure and rated for operation from –4° to 140°F. Each logger includes Greyline Logger software to retrieve and display logged data by RS232 or modem connection. The software calculates flow for round, rectangular, trapezoid and egg shaped channels plus flumes and weirs.
