John Morris

Overview

Submerged probe mounts at bottom of stream. Best for sites with wind, steam, foam or turbulence.
The 4120 Flow Logger measures liquid level using a differential pressure transducer, and calculates flow using built-in level-to-flow conversions. The probe's venting system automatically compensates for changes in atmospheric pressure to maintain accuracy. This technology provides accurate measurement at sites where wind, steam, foam, turbulence or air temperature fluctuations exist. The probe accurately senses pressure even when covered with silt and sand.

Isco mounting rings make it easy to install the probe in round pipes, manhole inverts and other open channels. With the Isco Street Level Installation Tool, you can install your monitoring system from ground level, eliminating the costs and hazards of entering manholes. In addition, most flumes are available with an integral recess for mounting an Isco Submerged Probe.

You can retrieve stored data on-site with a laptop PC or an Isco 581 Rapid Transfer Device. Isco Flowlink Software produces a variety of informative graphs and reports from stored data.
Features

• Large, versatile memory - stores over 100000 readings of flow, rainfall and sample data.
• Easy setup using Flowlink software (required)
• Easy to upgrade - nonvolatile "flash" memory makes it easy to upgrade firmware without opening the enclosure.
• Rugged, submersible enclosure (NEMA 4X, 6 and IP67)
• Up to one year battery life using standard alkaline lantern batteries.
• Choice of standard (10 ft) and extended (30 ft) level measurement range.
• Venting system automatically compensates for atmospheric pressure changes

Benefits

Accurate Under Tough Conditions
The Isco 4120 probe uses an integral differential pressure transducer to measure the depth of the liquid. The probe features a streamlined, low-profile design to minimise flow stream obstruction. Its venting system automatically compensates for changes in atmospheric pressure to maintain measurement accuracy. The probe accurately senses pressure even when covered with silt and sand.

Safe for Hazardous Locations
Isco Submerged Probes are UL Classified for use in Class I, Division 1, Groups A, B, C, & D hazardous locations when installed using the new Intrinsically Safe Barrier and Quick Disconnect Box. This makes the 4120 safe to use in locations where flammable gases or vapors may be present.

Fast and Easy Installation
Isco mounting rings and straps make it easy to install the probe in round pipes, manhole inverts, and other open channels. In addition, most flumes are available with an integral recess for mounting an Isco Submerged Probe.

Applications

• Flow measurement where wind, steam, foam, or turbulence exist.
• Sampler Pacing and Activation - a 4100 Series Flow Logger signals a sampler to collect flow proportioned samples, and can also trigger a sampler based on flow, rainfall, or time.
• Treatment capacity analysis
• Inflow and infiltration studies
• Combined sewer overflow studies
• Long-term river and stream gauging