ISCO 730 Bubbler Flow Monitor

ISCO Bubbler Flow Monitor

  • Built-in flow conversions for most applications Ideal for weirs and flumes, Isco flow metering inserts, Manning formula, data points, or equation for special situations.
  • Automatic Drift Compensation maintains calibration
  • Triggering the 6712 sampler based on flow or level
Product Options

Overview

The Isco 730 Bubbler Module forces a metered amount of air through a bubble line submerged in the flow channel using a built-in air compressor. Water level is determined by measuring the pressure needed to force air bubbles from the line, and this is then converted into flow rate by the 6712 sampler.

The 730 Bubbler is not affected by wind, steam, foam or turbulence, and can be used in small channels. Flows containing corrosive chemicals can be measured, as only the bubble line contacts the flow, and the module is also resistant to damage by debris and lightning, making it ideal for stormwater applications. Clogging is prevented with automatic bubble line purging.

Automatic Drift Compensation makes Isco's bubbler flow meter technology the most accurate form of flow measurement. In standby applications such as monitoring stormwater runoff, Automatic Drift Compensation also allows the 730 to maintain calibration for extended periods.

Standard Features of the 730 Module

  • Built-in flow conversions for most applications, including Manning formula, flumes and weirs, Isco flow metering inserts, data points, or equations for special situations.
  • Bubbler line not affected by composition of the flow stream
  • Automatic Drift Compensation maintains calibration in standby applications such as monitoring stormwater, and provides high level of accuracy..
  • All level 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 and level values.

Manufactured by: Teledyne ISCO
Model: ISCO Bubbler Flow Monitor

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance

Applications

Level and flow measurement where lightning and debris may be present, or in shallow flow streams
The collection of flow proportional samples
Trigger 6712 sampler based on flow or level
Monitoring stormwater
Treatment capacity analysis
River/stream gauging

Specification

730 Module
Size (HxWxD) 4.9 x 5.7 x 2.0 in (12.4 x 14.5 x 5.1 cm)
Weight 1.1 lbs (0.5 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 updated via interrogator port on 6700 Series Sampler using a PC
Operating Temperature 32° to 120°F (0° to 49°C)
Storage Temperature 0° to 140°F (-18° to 60°C)
Bubbler
Range 0.1 to 10 ft (0.03 to 3.05 m)
Level Measurement Accuracy (Non-linearity, repeatability, and hysteresis at 25°C (77°F). Max error (±) for indicated level range.
0.1 to 5.0 ft (0.03 to 1.52 m) ±0.005 ft (±0.002 m)
0.1 to 7.0 ft (0.03 to 2.13 m) ±0.01 ft (±0.003 m)
0.1 to 10 ft (0.03 to 3.05 m) ±0.035 ft (±0.011 m)
Temperature Coefficient (Maximum error (±) per degree of temperature change over compensated range)
For level in feet ±0.0003 x level x temperature change from 72°F
For level in meters ±0.0009 x level x temperature change from 22°C
Automatic Drift Correction After a 5 minute warm-up period, zero level is corrected to ±0.002 ft. (±0.0006 m) at intervals between 2 and 15 minutes
Long-Term Level Calibration Change Typically 0.5% of reading per year
Ambient Operating Temperature Range 0° to 140°F (-18° to 60°C)
Compensated Temperature Range 32° to 140°F (0° to 60°C)

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