Contents

Revision and Copyright Information
Warranty and Assistance
Table of Contents
SP-LITE Silicon Pyranometer
- 1. General Description
  - 1.1 Electrical Properties
  - 1.2 Spectral Properties
  - 1.3 Directional/Cosine Response
- 2. Sensor Specifications
- 3. Installing the SP-LITE
- 4. Wiring
- 5. Datalogger Programming
  - 5.1 Datalogger Input Range Codes
  - 5.2 Calibration Factor and Multiplier
  - 5.3 Program Example 1, Average Solar Radiation
  - 5.4 Program Example 2, Total Solar Radiation
    - 5.4.1 Output Format Considerations
  - 5.5 Program Example 3, Average and Total Solar Radiation
- 6. Maintenance
  - 6.1 Calibration
- 7. Troubleshooting
  - 7.1 Pyranometer produces no apparent output
  - 7.2 Readings are not as expected
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Campbell Scientific SP-LITE Instruction Manual

Campbell Scientific SP-LITE Sensor manual cover

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Campbell Scientific SP-LITE Sensor Specification

The Campbell Scientific SP-LITE Sensor is a high-precision pyranometer designed for measuring solar radiation. It is engineered to deliver accurate and reliable data for applications in meteorology, climatology, and solar energy research. The sensor operates using a silicon photovoltaic detector, which is responsive to global solar radiation within the spectral range of 400 to 1100 nanometers. This range makes it suitable for capturing the majority of the solar spectrum that reaches the Earth's surface.

The SP-LITE sensor achieves an optimal balance between performance and cost, featuring a robust and compact design for durability in various environmental conditions. It is housed in a weatherproof casing that protects it against rain, dust, and other environmental factors, ensuring long-lasting performance with minimal maintenance. The sensor provides an analog voltage output, which can be easily integrated with data loggers and other data acquisition systems.

With a sensitivity of approximately 60 to 100 microvolts per watt per square meter, the SP-LITE ensures precise measurement of solar irradiance. The sensor is calibrated against a reference pyranometer traceable to the World Radiometric Reference, ensuring high measurement accuracy. Its response time is less than 500 milliseconds, allowing for real-time monitoring of solar radiation.

The SP-LITE sensor is designed for easy installation, featuring a leveling base and a bubble level to ensure accurate positioning. Its compact size and lightweight structure facilitate deployment in both permanent and temporary monitoring setups. Overall, the Campbell Scientific SP-LITE Sensor is a reliable and efficient choice for professionals seeking quality solar radiation measurements in diverse environmental conditions.

Campbell Scientific SP-LITE Sensor F.A.Q.

How do I install the Campbell Scientific SP-LITE Sensor?

To install the SP-LITE Sensor, mount it on a stable surface using the provided mounting hardware, ensuring that the sensor is level and unobstructed. Connect the sensor cable to your data logger or monitoring equipment. Follow the manufacturer's instructions for electrical connections to avoid damage.

What is the best practice for cleaning the SP-LITE Sensor?

Use a soft, damp cloth to gently wipe the sensor's surface. Avoid using harsh chemicals or abrasive materials, as these may damage the sensor lens. Regular cleaning ensures accurate measurements.

How can I troubleshoot inaccurate readings from the SP-LITE Sensor?

Check the sensor’s alignment and ensure it is properly leveled. Verify all electrical connections and inspect the cable for damage. Calibrate the sensor if necessary, following the manufacturer's guidelines.

What maintenance is required for the SP-LITE Sensor?

Regularly inspect the sensor for physical damage or debris obstructing the sensor surface. Clean the sensor as needed and check electrical connections for corrosion. Periodically verify the calibration accuracy.

How do I calibrate the SP-LITE Sensor?

Calibration involves comparing the sensor output to a known reference under controlled conditions. Follow the detailed calibration procedure provided in the user manual, including any necessary adjustments to the data logger settings.

Can the SP-LITE Sensor be used in all weather conditions?

Yes, the SP-LITE Sensor is designed for all-weather use. It is weather-resistant and can operate in a wide range of environmental conditions. However, ensure that it is properly mounted and maintained for optimal performance.

What are the common issues with the SP-LITE Sensor and how to fix them?

Common issues include inaccurate readings, which can often be fixed by recalibrating the sensor, checking for obstructions, and inspecting electrical connections. Ensure that the sensor is clean and correctly positioned.

How do I replace the cable on the SP-LITE Sensor?

To replace the cable, disconnect the existing cable from the sensor and data logger. Install the new cable according to the manufacturer’s instructions, ensuring tight and secure connections to prevent signal loss.

What should I do if the SP-LITE Sensor is not responding?

First, verify that all electrical connections are secure. Check for any visible damage to the sensor or cable. If the sensor remains unresponsive, consult the troubleshooting section in the user manual or contact technical support.

How do I integrate the SP-LITE Sensor with a data logging system?

Connect the sensor to your data logger using the appropriate cables and follow the setup instructions provided by the data logger manufacturer. Configure the data logger to interpret the sensor's output signals correctly.