Principle of flow measurement on pipes partially filled
Measuring range up to 6,2 m/sec
Output signal 4÷20mA continues - digital
Measures reverse flow
Works in irregular channel shapes
- For Open Channels and PipesNo Flume or Weir Required
- Ultrasonic - Measures Velocity + Level to Calculate Flow
- Works in partially filled and surcharged pipes
- Measures Forward and Reverse Flow
- 3 Isolated 4-20mA Outputs (Flow, Level and Velocity)
- Totalizer and 2 Control Relays
- Optional Intrinsically Safe Sensor
- Optional built-in 2-million point Data Logger
The model AVFM 6.1 is used for measurement on open channels, partially filled pipes of sewer drains. It is used in artificial canals or channels with weirs.
Ideal for rainwater, combined effluents, sewage, irrigation water and streams.
Calibration is simple: once the diameter of the pipe or the shape of the channel is entered, AVFM 6.1 calculates the flow rate and displays it on the display.
Bidirectional measurement and possibility to calibrate the instrument on any shape of channel.
Area-Velocity | Operation:
AVFM 6.1 uses an ultrasonic sensor immersed in liquid to measure both the velocity and the level of the channel. The sensor is completely sealed, with no orifices or ports. It is mounted inside the tube or on the bottom of a channel.
AVFM 6.1 is recommended for pipes larger than 6" (150 mm) in diameter.
Maximum pipe diameter or channel width should not exceed 10 feet (3m) unless flow velocity is evenly distributed across the width of the channel.
Avoid placing the sensor in the presence of sediment buildup.
The maximum slope of the channel must not exceed 3%.
AVFM 6.1 measures direct flow velocity 0.1-20 ft/sec (0.03-6.2 m/sec) while at reverse flow the measured velocity is up to 5 ft/sec (1.5 m/sec).