Sensor Products, TTI Inc.
The Mainstream portable flowmeter for open channels and part-filled pipes is derived from the Mainstream III fixed-installation flowmeter and is suitable for use in short-term or extended field studies. It works in liquids ranging from clean water to raw sewage, and measures flow velocities (bidirectional) from 0.03 to 16 ft/s (0.01 to 0.5 m/s) with no zero offset or drift. Recording intervals are configurable from 30 seconds to 60 minutes, and the integrated data logger stores up to 250,000 measurements.
September 10, 2003