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AVFM 6.1
The Area Velocity Flow Measurement method is the most common method of all flow measurements. The AVFM 6.1 Area Velocity Flow Meter uses a submersible ultrasonic sensor measuring both the level and velocity of flowing liquid to calculate flow measurement in an open channel or pipe. The sensors are mounted either inside a pipe or at the bottom of a channel, and the sensor is built to resist fouling, corrosion, and abrasion. The AVFM 6.1 Area Velocity Flow Meter can be configured with the standard submerged velocity-level sensor or with submerged velocity in combination with a separate non-contacting ultrasonic level sensor, which is suitable for highly aerated fluids or those with a high concentration of suspended solids.
The AVFM 6.1 can measure forward flow velocity up to 6 m/s (19.7 ft/s) and reverse flow up to 1.5 m/s (5 ft/s). The electronics and software sample and average flow rates continuously provide stable readings. The submerged velocity/level sensor will measure flow in partially full and surcharged pipes with pressure up to 10 psi. The minimum recommended pipe diameter for the AVFM 6.1 Area-Velocity Flow Meter is 150 mm (5.9 in).
Configuration is simple for the AVFM 6.1 Area Velocity Flow Meter. Just enter the pipe diameter or channel dimensions and the AVFM 6.1 automatically computes and displays flow volume. Configure the AVFM 6.1 for installation in irregular or compound channel shapes by entering the channel width and multiple level points through the simple menu system. Channels for virtually any shape can be monitored with your choice of measurement units.
PLEASE CALL US FOR SUPPLY & INSTALLATION ON: +44 (0) 1484 629 110
| General Specifications | |
|---|---|
| Spec name: | Description: |
| 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) |
| QZ02L Sensor Specifications | |
|---|---|
| Spec name: | Description: |
| Velocity Measurement Range | 0.031 m/s to 6.2 m/s (0.1 ft/s to 20 ft/s) and reverse flow to -1.5 m/s (-5 ft/s) in fluids containing bubbles or solids with a minimum size of 100 microns and a minimum concentration of 75 ppm to act as acoustic reflectors |
| Level Measurement Range | Minimum Head: 25.4 mm (1 in). Maximum Head: 4.57 m (15 ft) |
| Operating Temperature | -15 °C to 80 °C (5 °F to 175 °F) |
| Exposed Materials | 316 stainless steel, epoxy resin, polyurethane |
| Sensor Cable | 7.6 m (25 ft) submersible polyurethane jacket, shielded, 3-coaxial |
| Sensor Mounting | Includes MB-QZ stainless steel mounting bracket |
| Temperature Compensation | |
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