Turbidity Sensors by Campbell Scientific, Inc.

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	Analyzers Gas Anemometers Data Acquisition Systems Data Collection Systems Data Loggers Encoders Shaft Hygrometers Probes Current Humidity pH Temperature Thermocouple Pyranometers Radiometers Resistance Temperature Detectors (RTDs) Sensors Air Velocity Conductivity Current Dissolved Oxygen Distance Electric Field Flow Gas GPS Heat Flux Humidity Moisture pH Position Precipitation Pressure Quantum Turbidity Water Wind Temperature Sensors Air RTD Soil Surface Thermistor Thermocouple Water Thermocouples Type E Transducers Pressure

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Campbell Scientific, Inc.

Logan, UT

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		OBS-3+ The OBS-3+ Turbidity Monitor is a submersible probe, part of our OBS® line of products that use a backscatter method to measure turbidity. The OBS-3+ operates in the range of 0 to 4000 NTU. It replaces the OBS3 on our price lists. The OBS-3+ can be used in several applications, ranging from water quality in freshwater rivers and streams to sediment transport and dredge monitoring. The output for the OBS-3+ can be specified at time of order, allowing you to customize the sensor to match the datalogger being used to make the measurement. Request Quote

		OBS-3A 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 which pressure sensor is 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. Request Quote

		OBS-5+ The OBS-5+ system, part of our OBS® line of products, monitors high sediment concentrations using an infrared laser and a proprietary dual photo-detection system (U.S. Patent No. 5,796,481). The probe transmits sediment concentration and depth to a PC via an RS-232 or RS-485 link. It can also record data internally. The OBS-5+ has a Windows GUI that enables the user to generate and store sediment calibration tables, program data logging and sampling schemes, and graphically display data. Request Quote