Campbell Scientific OBS-5 Plus Operator's Manual

Campbell Scientific OBS-5 Plus Sensor manual cover
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Campbell Scientific OBS-5 Plus Sensor Specification

The Campbell Scientific OBS-5 Plus Sensor is an advanced optical backscatter sensor designed to accurately measure turbidity and suspended solids in aquatic environments. This sensor is suitable for a wide range of applications including environmental monitoring, sediment transport studies, and water quality assessments. The OBS-5 Plus features a robust design that enables it to function effectively in challenging field conditions. It is equipped with dual near-infrared LEDs, allowing for precise measurements by minimizing interference from ambient light and color variations in the water. The sensor operates over a wide measurement range, supporting turbidity readings from 0 to 4,000 NTU and suspended solids concentrations from 0 to 500 g/L, making it versatile for diverse field conditions.

The OBS-5 Plus is designed with a smart onboard microcontroller that facilitates automatic gain adjustments to optimize measurement accuracy across different sediment types and concentrations. It provides both analog and digital outputs, ensuring compatibility with various data loggers and telemetry systems. The sensor's durable construction includes a corrosion-resistant titanium housing, making it suitable for deployment in both freshwater and marine environments. Its compact size and streamlined shape reduce flow disturbance, thereby enhancing measurement reliability. Additionally, the OBS-5 Plus offers low power consumption, which is ideal for long-term monitoring applications. The sensor’s advanced features, combined with its rugged design, make it a reliable and efficient tool for professionals seeking precise and consistent turbidity and suspended solids data in various aquatic settings.

Campbell Scientific OBS-5 Plus Sensor F.A.Q.

How do I calibrate the Campbell Scientific OBS-5 Plus Sensor?

To calibrate the OBS-5 Plus Sensor, you should use a known turbidity standard solution and follow the calibration procedure outlined in the user manual. Ensure the sensor is clean and follow the software instructions for calibration.

What are the typical applications for the OBS-5 Plus Sensor?

The OBS-5 Plus Sensor is typically used for monitoring turbidity and suspended solids in natural waters, wastewater, and industrial processes. It is suitable for both laboratory and field applications.

How can I troubleshoot a non-responsive OBS-5 Plus Sensor?

If the sensor is non-responsive, check the power supply and connections. Ensure that the data logger is configured correctly and that the software is communicating with the sensor. A factory reset might be necessary if the problem persists.

What maintenance is required for the OBS-5 Plus Sensor?

Regular maintenance includes cleaning the sensor's optics with a soft cloth and mild detergent, checking the cable connections for corrosion, and ensuring all seals are intact to prevent water ingress.

Can the OBS-5 Plus Sensor be used in saltwater environments?

Yes, the OBS-5 Plus Sensor can be used in saltwater environments. However, it is important to rinse the sensor with fresh water after use to prevent salt buildup and corrosion.

How do I install the OBS-5 Plus Sensor in a field setting?

To install the sensor in a field setting, secure it to a stable mounting structure, ensuring the sensor's optics are fully submerged and aligned with the water flow. Use appropriate cabling and sealing to protect connections from environmental exposure.

What data outputs are available from the OBS-5 Plus Sensor?

The OBS-5 Plus Sensor provides analog voltage outputs and digital outputs via RS-232. These can be configured to represent turbidity, suspended solids concentration, or raw voltage.

How does temperature affect the readings of the OBS-5 Plus Sensor?

Temperature can affect the optical properties of water and change turbidity readings. The OBS-5 Plus includes temperature compensation features, but it's important to calibrate the sensor at the temperature range of the expected application.

What is the depth rating for the OBS-5 Plus Sensor?

The OBS-5 Plus Sensor has a depth rating of up to 300 meters (approximately 984 feet), making it suitable for most freshwater and marine applications.

How can I ensure data accuracy with the OBS-5 Plus Sensor?

To ensure data accuracy, regularly calibrate the sensor, maintain clean optics, and verify the data logger settings. Consider environmental factors such as biofouling and water temperature changes that might affect readings.