Greyline Instruments AVFM 5.0 Ultrasonic Flow Meter

Displays, transmits and totalizes flow through open channels, partially filled pipes and surcharged pipes without a flume or weir.

Greyline Instruments AVFM 5.0 Ultrasonic Flow Meter
Greyline AVFM 5.0 Ultrasonic Flow Meter

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Manufactured

By Pulsar Measurement, Trading Name of Greyline

Includes

FREE Ground Shipping
FREE Lifetime Tech Support

Product Manual Product Specs

Features

For open channels and pipes
No flume or weir required
Measures velocity + level to calculate flow
- 0.1 to 20 ft/sec & reverse flow to -5 ft/sec velocity
- 1 inch to 15 feet level range
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
Simple 5-key calibration

What's in the Box

Submersible velocity & level sensor
Submersible, shielded 3-coaxial cable
Stainless steel sensor mounting bracket
Installation and operation manual

The Greyline Instruments AVFM 5.0 ultrasonic flow meter is designed to display, transmit and totalize flow through open channels, partially filled pipes and surcharged pipes without a flume or weir making it ideal for municipal stormwater, combined effluent, raw sewage and irrigation water applications.

The AVFM 5.0 ultrasonic flow meter measures both level and velocity to calculate flow in an open channel or pipe. The meter can measure forward flow velocity up to 20 ft/sec (6 m/sec) and reverse flow up to 5 ft/sec (1.5 m/sec). The electronics and software sample and average flow rates continuously to provide stable readings. The submerged velocity/level sensor is suitable in pipes with pressure up to 10 psi. No special set-up or adjustment is required. Minimum recommended pipe diameter is 6" (150 mm).

Setting up and using the AVFM 5.0 is simple. The ultrasonic sensor mounts inside the pipe or on the bottom of a channel with a stainless steel mounting bracket and a single screw into the bottom of the pipe or channel. No special compounds, tools or hardware are required. The sensor is completely sealed with no orifices or ports. Careful selection of sensor mounting location results in best performance and maintenance-free operation. Locations where sediment builds up should be avoided. Best possible accuracy will result when the water is not highly turbulent and where velocity is evenly distributed across the channel. The channel should not have drops or direction changes immediately upstream of the sensor mounting location. Pipe or channel slope should not exceed 3%.

The flowrate and total flow can be viewed on the AVFM 5.0's large backlit LCD display. The unit can be connected to external devices with three 4-20mA outputs and two control relays. Choose the built-in data logger option if you want the AVFM 5.0 to store time and date stamped flow values at 10 second to 60 minute intervals. Daily flow reports are automatically created. Windows software is included to display log files in graph and table formats, change measurement units and generate flow reports.

Calibration is as simple as entering the pipe diameter or channel dimensions and letting the AVFM 5.0 automatically compute and display flow volume.

Spec Sheets

Greyline Instruments AVFM 5.0 Ultrasonic Flow Meter Datasheet PDF (142 KB)

Manuals

Greyline Instruments AVFM 5.0 Ultrasonic Flow Meter Manual PDF (1.2 MB)

Application Notes and White Papers

Other

Flow Application Information Form (268 KB)

Cables

Greyline Instruments VXC Sensor Cable

Submersible, tri-coaxial cable available in lengths up to 500 feet.

Starting at $325.00

Sensors/Probes

Greyline Instruments QZ02L-DP Velocity Sensor

Submersible ultrasonic sensor continuously measures stream velocity in the channel.

Starting at $800.00

Greyline Instruments PZ15-LP Level Sensor

Low profile, non-contacting ultrasonic level sensor ideal for confined spaces and small flumes.

Some Models in Stock

Starting at $655.00

Greyline Instruments PZ15 Level Sensor

Non-contacting ultrasonic level sensor is small enough for very small flumes and powerful enough for really large applications.

Some Models in Stock

Starting at $655.00

Accessories

Please consider these optional accessories.

Greyline Instruments VD Series Pipe Dams

Maintains low flow water level at 1” or higher as required for ultrasonic level measurement.

Starting at $265.00

Greyline Instruments VSJ Series Mounting Bands

Provides easy mounting for submersible sensors inside of round pipes.

Some Models in Stock

Starting at $245.00

Greyline Instruments JB2X Sensor Cable Junction Box

NEMA4X/IP66 polycarbonate junction box for extending sensor cable lengths.

$64.00

Greyline Instruments QZ02L-SS-SD Velocity & Level Sensor

316 stainless steel submersible ultrasonic sensor, continuously measures both velocity and level in the channel.

Some Models in Stock

Starting at $1,020.00

This product can be used in the following applications:

Here's how some of our customers use this product...

Measuring the Volumetric Flow in Large, Partially-filled Pipes

The Background: A wastewater treatment plant requires volumetric flow records of all incoming and outgoing water, treated or otherwise.

The Problem: The influent is directed from a 72-inch sewer main which is typically just 5 to 15% filled so as not to cause restrictions which could back-up the entire sewer system upstream. The challenge, then, is measuring the flow in this large, partially filled pipe.

The Solution: The Greyline AVFM ultrasonic flow meter can calculate flow in an open channel or pipe making it a great solution that is simple and easy to install. Simply program in the pipe’s geometry and a level sensor measures the fluid depth while an angled Doppler ultrasonic sensor measures fluid velocity. These two values allow the meter to calculate the cross-sectional area that the water is occupying and the volumetric flow.