ISCO 750 Area Velocity Flow Monitor
- Choice of Level Ranges Choice of standard (10 ft) and extended (30 ft) level measurement range
- Flow Accessory for Sampler 750 can be connected to 6700 series samplers or the Avalanche sampler to calculate flow rate
- All level and flow data available on Sampler Display and Log Data can be retrieved using ISCO FlowLink Software
Overview
The ISCO 750 Area Velocity Flow Meter module's sensor uses patented doppler flow meter technology to measure average velocity directly in the flow stream. Flow area is determined by measuring the depth of the stream using an integral pressure transducer. Flow rate is then calculated in the 6712 sampler by multiplying average velocity by the area of flow.
In applications where weirs or flumes are not practical, or where full pipe, surcharged and reverse flow conditions may occur, the 750 area velocity flow module gives greater accuracy. The shorter wavelength of 1 MHz systems does not penetrate into flow streams as deeply as Isco's exclusive 500 kHz doppler which can cause 'nearsighted' velocity measurements. The flow stream is continuously profiled by the doppler flow monitor, eliminating profiling and calibration required by electromagnetic systems. With area velocity flow measurement you don't have to estimate the slope and roughness of the channel.
Standard Features of the 750 Module
- 10ft standard level measurement and 30ft level measurement range.
- Streamlined, sealed area-velocity sensor resists fouling by oil and grease and sheds debris.
- All level and velocity data stored in the sampler is available for retrieval and can be used in reporting, graphing and analysis using Flowlink software.
- LCD display can be used to view current flow, level and velocity values
Manufactured by: Teledyne ISCO
Model: ISCO 750 Area Velocity Flow Monitor
Services offered for this product
- Sales
- Rental
- Installation
- Calibration
- Maintenance
Applications
Accurate flow measurement in open channels without weir or flume
Pretreatment compliance
Monitoring storm water runoff
Infiltration and inflow studies
River/stream gauging
Monitoring sewer flow
Permit enforcement
Specification
| 750 Area Velocity Module | |
| Size (HxWxD) | 4.9 x 5.7 x 2.0 in (12.4 x 14.5 x 5.1 cm) |
| Weight | 0.9 lbs (0.4 kg) |
| Material | Polystyrene |
| Enclosure | NEMA 4X, 6 IP67 |
| Power | 9 to 14V DC (provided by 6700 Series Sampler) |
| Program Memory | Non-volatile, programmable flash; can be field updated through sampler |
| Operating Temperature | 32° to 120°F (0° to 49°C) |
| Storage Temperature | 0° to 140°F (-18° to 60°C) |
| Level-to-Area Conversions | |
| Channel Shapes | Round, U-shaped, rectangular, trapezoidal |
| Data Points | Four sets of 50 level-area points |
| Level-to-Flow Rate Conversions | |
| Weirs | V-notch, rectangular, Cipolletti |
| Flumes | Parshall, Palmer-Bowlus, Leopold-Lagco,Trapezoidal, H, HS, HL |
| Manning Formula | Round, U-channel, rectangular, trapezoidal |
| Data Points | Four sets of 50 level-flow rate points |
| Equation | Two-term polynomial |
| Area Velocity Sensor �????�???�??�?�¢?? Standard and Extended Range | |
| Size (LxWxH) | 6.6 x 1.6 x 1.2 inches (16.8 x 4.1 x 3.0 cm) |
| Weight, incl. Cable | 2.1 lbs (0.96 kg) for standard range probe with 25 foot cable; 3.9 lbs (1.8 kg) for extended range probe with 50 ft cable. |
| Materials | Polybutadiene-based polyurethane, stainless steel; PVC and CPVC cable |
| Operating Temperature Range | 32° to 160°F (0° to 71°C) |
| Compensated Temperature Range | 32° to 100°F (0° to 38°C) |
| Velocity Measurement | |
| Method | Doppler Ultrasonic, 500 kHz |
| Velocity Range | -5 to +20 ft/s (-1.5 to 6.1 m/s) |
| Minimum Depth | 0.25 ft (75mm), typical |
| Operating Temperature Range | 32° to 160°F (0° to 71°C) |
| Compensated Temperature Range | 32° to 100°F (0° to 38°C) |
| Level Measurement | |
| Method | Submerged pressure transducer |
| Standard Range Probe | Measurement range 0.05 to 10 ft (0.015 to 3.05 m); max level 20 ft (6.1 m) |
| Extended Range Probe | Measurement range 0.05 to 30 ft (0.015 to 9.1 m); max level 40 ft (12.2 m) |
| Level Accuracy - Standard Range Probe, for indicated level range. Includes non-linearity, repeatability, and hysteresis at 25°C (77°F) | |
| 0.033 to 5.0 ft (0.01 to 1.52m) | ±0.008 ft/ft (±0.008 m/m) |
| >5.0 ft (>1.52 m) | ±0.012 ft/ft (±0.012 m/m) |
| Level Accuracy - Extended Range Probe, for indicated level range. Includes non-linearity, repeatability, and hysteresis at 25°C (77°F) | |
| 0.05 to 15ft (0.015 to 4.57m) | ±0.03 ft (±0.009 m) |
| 0.05 to 21ft (0.015 to 6.4m) | ±0.09 ft (±0.027 m) |
| 0.05 to 30ft (0.015 to 9.14m) | ±0.3 ft (±0.09 m) |
| Area Velocity Sensor - Low Profile | |
| Size (LxWxH) | 6 x 1.3 x 0.75 inches (15.2 x 3.3 x 1.9 cm) |
| Weight, incl. Cable | 2.1 lbs (0.96 kg) |
| Materials | Epoxy, CPVC, stainless steel; PVC and CPVC cable |
| Operating Temperature Range | 32° to 122°F (0° to 50°C) |
| Cable Length | 25 ft (8m) standard. Up to 75 ft (22.8 m) with optional extension. Up to 1000 ft (300 m) with optional Quick Disconnect Box. |
| Velocity Measurement | |
| Method | Doppler Ultrasonic, 500 kHz |
| Velocity Range | -5 to +20 ft/s (-1.5 to 6.1 m/s) |
| Minimum Depth | 0.08 ft (25mm), typical |
| Level Measurement | |
| Method | Submerged pressure transducer |
| Range | 0.033 to 10 ft (0.01 to 3.05 m); max allowable level 20 ft (6.1 m) |
| Level Accuracy | Depths from 0.033 to 5.0 ft (0.01 to 1.52m): ±0.008 ft/ft (±0.008 m/m); Depth >5.0 ft (>1.52 m): ±0.012 ft/ft (±0.012 m/m). Accuracy per foot of change from calibrated depth @ 77°F (25°C). Includes non-linearity and hysteresis. |
