Pulsar AVFM 6.1

Area Velocity Flow Meter

Pulsar AVFM 6.1

The AVFM 6.1 sensor from the British company Pulsar is suitable for measuring flow and velocity in open channels and partially filled pipes. It is designed for flow studies, infiltration and inflow studies, while its advanced manufacturing technology makes it ideal for wastewater, stormwater, irrigation, and environmental flow applications.

The AVFM 6.1 uses a submersible ultrasonic sensor to continuously measure both velocity and level in the channel or pipe. The sensor is resistant to fouling, corrosion, and abrasion. It provides real-time flow rate calculation and totalized flow display on its large, backlit LCD screen. The system connects to samplers or SCADA and telemetry systems via its 4-20mA outputs and relays. Data retrieval is also possible via USB stick.

Technical Specifications

Channel Types

Round pipe, rectangular, trapezoid, egg, or custom shapes

Electronics Enclosure

NEMA4X (IP 66) polycarbonate with clear, shatterproof cover

Accuracy

Level: ±0.25% of reading or ±0.08 in, whichever is greater. Repeatability & Linearity 0.1%. Velocity: ±2% of reading or ±0.012 m/s (0.04 ft/s), whichever is greater. Requires solids or bubbles minimum size of 100 microns, minimum concentration 75 ppm. Repeatability & Linearity 0.5%

Display

White, back-lit matrix - displays flow rate, totalizer, relay states, operating mode, and calibration menu

Programming

Built-in 5-key calibrator with English, French, or Spanish language selection

Power Input

100-240 V AC 50/60 Hz, 10 VA maximum.
Optional: 9-32 V DC, 10 W maximum

Outputs

3 Isolated 4-20 mA, 1000 ohm, (Flow, Level, and Velocity) or 0-5 V DC by menu selection

Control Relays

2 Relays, form 'C' dry contacts rated 5 amp SPDT; programmable for flow proportional pulse (sampler/totalizer), flow, and/or level alarm

Data Logging

Programmable 26 million point data capacity, time and date stamped plus formatted flow reports including Total, Average, Minimum, Maximum, and times of occurrence. Includes USB output to Flash Drives and Windows software

Operating Temperature (Electronics):

-20 °C to 60 °C (-5 °F to 140 °F)

Approximate Shipping Weight

4.5 kg (10 lbs)

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