Campbell Scientific OBS-3 Plus Product Manual

Campbell Scientific OBS-3 Plus Sensor manual cover
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Campbell Scientific OBS-3 Plus Sensor Specification

The Campbell Scientific OBS-3 Plus Sensor is a high-precision turbidity and suspended solids sensor designed for environmental and hydrological applications. It features advanced optical backscatter technology, enabling it to measure turbidity and suspended sediment concentrations with exceptional accuracy. The sensor is equipped with a robust and durable design, making it suitable for deployment in harsh marine, freshwater, and wastewater environments.

The OBS-3 Plus operates over a broad range of turbidity levels, from 0 to 4,000 NTU, providing reliable data for both low and high-turbidity conditions. Its advanced optics and electronics reduce signal noise and enhance measurement stability. The sensor's integrated temperature sensor allows for compensation of temperature effects on turbidity readings, ensuring precise measurements in varying temperature conditions.

Supporting both analog and digital outputs, the OBS-3 Plus is compatible with a wide range of data loggers and acquisition systems, facilitating seamless integration into data monitoring networks. The sensor's low power consumption makes it ideal for long-term monitoring projects, while its compact and lightweight form factor ensures easy installation and handling.

The OBS-3 Plus is constructed with corrosion-resistant materials, including a Delrin housing and a scratch-resistant optical surface, which ensure longevity and reliability in demanding settings. Its user-friendly design includes a simple calibration process, and the sensor supports flexible mounting options for diverse deployment scenarios. Overall, the Campbell Scientific OBS-3 Plus Sensor is a versatile and reliable tool for accurate turbidity and suspended solids measurement in a variety of environmental monitoring applications.

Campbell Scientific OBS-3 Plus Sensor F.A.Q.

How do I calibrate the Campbell Scientific OBS-3 Plus Sensor?

To calibrate the OBS-3 Plus Sensor, use a turbidity calibration solution and follow the manufacturer's calibration procedure, which involves immersing the sensor in the solution and adjusting the calibration settings using the provided software or data logger instructions.

What is the proper way to install the OBS-3 Plus Sensor?

Install the OBS-3 Plus Sensor by securing it in a location where it will be fully submerged in water and free from physical obstructions or debris. Use the provided mounting bracket or a custom fixture to ensure stability and correct orientation.

How can I troubleshoot if the sensor is not providing accurate data?

Check the sensor for fouling or damage, ensure proper calibration, and verify the connections to the data logger or power supply. If issues persist, consult the troubleshooting section of the user manual or contact technical support.

What maintenance is required for the OBS-3 Plus Sensor?

Regularly inspect the sensor for biofouling or sediment buildup, clean the optical windows gently with a soft brush or cloth, and recalibrate as necessary to ensure accurate measurements.

How do I clean the optical windows of the OBS-3 Plus Sensor?

Clean the optical windows using a soft, non-abrasive cloth or brush, and if necessary, a mild detergent. Avoid using harsh chemicals or abrasive materials that can scratch the sensor's surface.

Can the OBS-3 Plus Sensor be used in saltwater environments?

Yes, the OBS-3 Plus Sensor is designed for use in both freshwater and saltwater environments. However, regular maintenance and inspection are recommended to prevent sensor fouling and corrosion.

What data output formats are available on the OBS-3 Plus Sensor?

The OBS-3 Plus Sensor can output data in several formats, including analog voltage, SDI-12, and RS-232, allowing compatibility with various data loggers and monitoring systems.

How do I connect the OBS-3 Plus Sensor to a data logger?

Connect the OBS-3 Plus Sensor to a data logger using the appropriate interface cable. Ensure the wiring matches the data logger's input configuration, and configure the logger to recognize the sensor's output format.

What factors can affect the accuracy of the OBS-3 Plus Sensor?

Factors such as biofouling, sediment buildup on the optical window, incorrect calibration, and environmental conditions like air bubbles or debris can affect the sensor's accuracy. Regular maintenance and calibration are essential to minimize these effects.

Is it possible to integrate the OBS-3 Plus Sensor with other environmental monitoring systems?

Yes, the OBS-3 Plus Sensor can be integrated with various environmental monitoring systems due to its versatile data output options, making it suitable for comprehensive water quality monitoring projects.