Greyline AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter

Greyline AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter

Multi-Sensor Area-Velocity Flow Meter – Vancouver BC

At Southwell Corp, we have been selling and supporting Greyline flow meters in Vancouver and throughout BC for over 15 years. We recommend the Greyline AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter to Display, Transmit and Totalize Flow in Large Open Channels, Pipes and Culverts.

Greyline AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter

AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter

  • Display, Transmit and Totalize Flow
  • Large Open Channels, Pipes and Culverts
  • Multiple Velocity Sensors
  • Simple 5-key Calibration
  • Three 4-20mA Outputs
  • Two Control Relays
  • Works in Irregular Channel Shapes
  • Works in Irregular Flow Profiles

Call 1.844.599.0260 to request a quote or email

Measures Velocity and Level to Monitor Flow with Multiple Ultrasonic Sensors
Monitor flow through large open channels, partially full sewer pipes and surcharged pipes without a flume or weir. Designed for municipal stormwater, stream flow, irrigation water, raw sewage, water intake channels, cooling water discharges and industrial effluent.

Submersible Ultrasonic Sensors
The AVMS 5.1 uses three submerged ultrasonic sensors to continuously measure both Velocity and Level in the channel. It is recommended for large channels or applications where velocity will vary across the width of the channel. The sensors resist fouling, corrosion and abrasion. The Greyline AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter offers excellence in flow meter technology.

The flowmeter can be configured with three standard submerged velocity-level sensors, or with three submerged velocity plus a separate non-contacting ultrasonic level sensor.

View flowrate and total flow on the large backlit LCD display and connect to external devices with three 4-20mA outputs and two control relays.

Multi-Sensor Flow Monitor for Open Channels & Partially Filled Pipes
The AVMS 5.1 Area-Velocity Flow Meter measures level and average velocity from multiple sensors to calculate flow in open channels or pipes. The system includes the AVMS 5.1 flowmeter with interconnect cable to a multi-sensor enclosure plus three submerged ultrasonic sensors.

The ultrasonic velocity sensors mount in the channel in positions where they will be submerged. Stainless steel mounting brackets included. The sensors are completely sealed with no orifices or ports. Level is measured by connecting the built-in level sensor from any one of the three velocity sensors, or with an optional non-contacting ultrasonic level sensor.
Greyline AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter

Q = V x A
To measure flow the AVMS 5.1 averages the velocity readings from its three submerged sensors. The level reading and channel dimensions provide the channel cross sectional area. Calibration is simple: enter the pipe diameter or channel dimensions and the AVMS 5.1 automatically computes and displays flow volume. Channels of virtually any shape can be monitored with your choice of measurement units.

Recommended Pipe or Channel Conditions
Channels greater than 2 m (6 ft) width or diameter may have significant variations in velocity across the channel width. By mounting three velocity sensors an average velocity profile is measured. The AVMS 5.1 will automatically factor out zero readings at low flow rates if one or more sensors are not submerged or become covered in sediment.

Careful selection of mounting location results in best performance and maintenance-free operation. Avoid locations where sediment builds up. The channel should not have drops or direction changes immediately upstream of the sensor and it should have a consistent cross section for one channel width upstream. Pipe or channel slope should not exceed 3%.

The AVMS 5.1 can measure forward velocity up to 20 ft/sec (6 m/sec) and up to 5 ft/sec (1.5 m/sec) reverse velocity. The electronics and software sample and average flow rates continuously to provide stable readings. The submerged velocity/level sensors will measure flow in partially full channels, culverts or surcharged pipes with pressure up to 10 psi.

Sensor Mounting Configurations
Sensors can be positioned across the channel to capture variations in flow velocity. One of the sensors is also used to measure level so it must be mounted at the bottom of the channel parallel to the water surface.

Optional Non-Contacting Level Sensor
An optional, non-contacting ultrasonic level sensor can be used for applications with turbulence or where level measurement from the channel bottom may be restricted by aeration or sediment. Each individual velocity and level sensor cable can be extended up to 500 ft (150 m) total length using an optional cable junction box.

The AVMS 5.1 Multi-Sensor Area-Velocity Flow Meter includes three submerged ultrasonic sensors that are installed in an open pipe or channel. The sensors have no moving parts and no orifices, ports or electrodes. Each sensor is installed with a stainless steel mounting bracket and one screw into the pipe or channel wall.

Channels of any shape can be monitored. Forward and reverse flow can be measured and totalized. The AVMS 5.1 includes three 4-20mA outputs ( flow, level and velocity), plus two control relays for level alarms or flow proportionate pulse output for samplers and chlorinators.

The AVMS 5.1 is easy to calibrate with its 5-button keypad and menu system. Extra relays and a built-in 2-million point data logger with USB output are optional.

Greyline Flow Meters are available in BC through Southwell Corp. We ship to Vancouver, Victoria, Burnaby, New Westminster, Surrey, Abbotsford, Kelowna, Kamloops, Vancouver Island, Prince George and every other town in BC.

Call 1.844.599.0260 to request a quote or email

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Applications for Greyline Flow Meter Products

Greyline Flow Products are known across many industries as reliable sources of data for your flow systems.

Discuss the specific needs of your project with one of Fiberman’s Greyline flow meter experts. We will ensure that the model you select will have the specifications required for safety and optimum performance. You will also benefit from our industry-leading quick quote turnaround and fast delivery across Canada and the US.

For all Greyline Flow Meter inquiries, please call 1.844.599.0260 or email or Request a Quote.

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Fiberman’s pricing and service experts are standing by to help to find the best product for your project. With many varieties in stock and expedited shipping, we can supply your project with flow meters at the best possible price with fast delivery.

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