Contents

Revision and copyright information
Table of contents
1. Introduction
2. Precautions
3. Initial inspection
- 3.1 Ships with
4. QuickStart
5. Overview
6. Specifications
- 6.1 Spectral
- 6.2 Directional
- 6.3 Mechanical
- 6.4 Environmental
7. Installation
- 7.1 Siting considerations
- 7.2 Mounting
- 7.3 Wiring
- 7.4 Data logger programming
  - 7.4.1 Input range integration
  - 7.4.2 Calibration factor
8. Operation
- 8.1 Electrical properties
- 8.2 Spectral properties
- 8.3 Directional/cosine response
- 8.4 Sensitivity to wind speed
9. Maintenance and troubleshooting
- 9.1 Maintenance
- 9.2 Troubleshooting
Appendix A. Importing Short Cut code into CRBasic Editor
Appendix B. Example programs
- B.1 CR3000 example program without wind speed correction
- B.2 CR1000X example program with wind speed correction
Limited warranty
Assistance
Safety
Campbell Scientific Regional Offices

Campbell Scientific NR-LITE2 Product Manual

Campbell Scientific NR-LITE2 Sensor manual cover

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Campbell Scientific NR-LITE2 Sensor Specification

The Campbell Scientific NR-LITE2 is a robust net radiometer designed for the precise measurement of net radiation, encompassing both short-wave and long-wave radiation components. This sensor is ideal for environmental and meteorological applications, providing critical data for studies related to energy balance, evapotranspiration, and climate monitoring. Constructed with a lightweight and durable aluminum housing, the NR-LITE2 is engineered to withstand harsh environmental conditions, ensuring reliable performance over extended periods.

The sensor features a thermopile detector that measures the temperature difference between the upper and lower surfaces, with the resultant voltage output being directly proportional to net radiation. The spectral range of the NR-LITE2 covers approximately 200 to 100,000 nanometers, allowing it to capture a wide array of radiation wavelengths. It operates efficiently within a temperature range of -40°C to +70°C, making it suitable for deployment in diverse climatic regions.

The NR-LITE2 requires a minimal power supply and connects easily to data loggers via a simple two-wire configuration, facilitating seamless integration into existing data acquisition systems. Its low maintenance design includes a desiccant cartridge to prevent moisture ingress, enhancing the longevity and accuracy of the sensor. Calibration of the NR-LITE2 is traceable to international standards, ensuring high measurement accuracy and reliability. With its compact design and ease of installation, the Campbell Scientific NR-LITE2 provides an effective solution for researchers and professionals seeking precise and reliable net radiation measurements.

Campbell Scientific NR-LITE2 Sensor F.A.Q.

What is the procedure for installing the Campbell Scientific NR-LITE2 sensor?

To install the NR-LITE2 sensor, securely mount it on a horizontal arm or crossarm using the provided U-bolt. Ensure that the sensor is level and free from any obstructions that could affect measurements. Connect the sensor to a compatible data logger using the appropriate wiring scheme.

How do I calibrate the NR-LITE2 sensor for accurate measurements?

The NR-LITE2 sensor is factory-calibrated and typically does not require further calibration. However, for quality assurance, it is advisable to periodically compare the sensor's output with a reference sensor under similar conditions.

What are the recommended maintenance practices for the NR-LITE2 sensor?

Regularly inspect the sensor for dirt, debris, or damage. Clean the sensor body and dome with a soft cloth and mild detergent. Check the cable and connections for wear and replace if necessary. Ensure the sensor remains level and unobstructed.

How can I troubleshoot data discrepancies from the NR-LITE2 sensor?

Verify the sensor’s level and orientation. Check the wiring and connections for any faults. Compare the data with a nearby, properly functioning reference sensor. Ensure the data logger's configuration matches the sensor’s specifications.

What environmental conditions can affect the NR-LITE2 sensor’s performance?

The sensor's performance can be affected by shading, reflections from nearby objects, and extreme weather conditions such as heavy rain or snow. It is important to install the sensor in an open area away from obstructions.

How do I connect the NR-LITE2 sensor to a data logger?

Connect the NR-LITE2 sensor to a data logger using the sensor’s cable. Follow the wiring diagram in the user manual to ensure correct connections. Typically, the sensor has a differential voltage output that needs to be configured in the data logger.

What is the typical output signal from the NR-LITE2 sensor?

The NR-LITE2 sensor typically outputs a differential voltage signal proportional to the net radiation it measures. This signal can be read by a compatible data logger configured to measure differential voltages.

How should the NR-LITE2 sensor be stored when not in use?

When not in use, store the NR-LITE2 sensor in a dry, dust-free environment. Cover the sensor to protect it from physical damage and environmental exposure. Ensure that the storage location is within the temperature and humidity range specified in the user manual.

Can the NR-LITE2 sensor be used in marine environments?

While the NR-LITE2 sensor is built to withstand various environmental conditions, exposure to salty marine environments may cause corrosion over time. Consider additional protective measures, such as coating or housing, if used in such conditions.

What are the most common issues users face with the NR-LITE2 sensor?

Common issues include inaccurate readings due to improper leveling, physical damage to the sensor dome, electrical connection problems, and environmental factors such as shading or reflections affecting measurements.