Product Information - OBS-3A
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Turbidity & Temperature Monitoring System
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 Brochure, Version Date: February 2009  Brochure
Manual, Version Date: November 2011  Manual

General Description

The OBS-3A combines our OBS probe with pressure, temperature, and conductivity sensors in a battery-powered recording instrument. Batteries and electronics are contained in a housing capable of operating at depths of up to 300 meters-depending on the pressure sensor installed.

The heart of the OBS-3A monitoring system is an optical backscatter sensor for measuring turbidity and suspended solids concentrations. This sensor detects near infrared (NIR) radiation scattered from suspended particles.

A fast-response, stainless steel-clad thermistor monitors temperature. Pressure is measured with a semiconductor piezoresistive strain gage, and conductivity is measured with a four-electrode conduction-type cell. Working depths of the pressure sensor are selected as an option (see Ordering Info).

The monitor is operated with software running under Windows® 98, 2000, and XP.

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