Contents

1. About Wintersense SDI-12
2. Precautions
3. Initial inspection
4. QuickStart
5. Overview
6. Technical specifications
7. Site installation
- 7.1 Wiring
- 7.2 Programming
  - 7.2.1 CRBasic programming
  - 7.2.2 SDI-12 measurements
  - 7.2.3 Identify measurement and measurement parameter commands
- 7.3 Install bracket
- 7.4 Installation height and angle
8. Maintenance
- 8.1 Clean the sensor
- 8.2 Replace the temperature and humidity element
  - 8.2.1 Replace sensor element
- 8.3 Updating the operating system (OS)
- 8.4 Troubleshooting
Appendix A. Importing Short Cut code into CRBasic Editor
Appendix B. SDI-12 sensor support
- B.1 SDI-12 command basics
  - B.1.1 Acknowledge active command (a!)
  - B.1.2 Send identification command (al!)
  - B.1.3 Start verification command (aV!)
  - B.1.4 Address query command (?!)
  - B.1.5 Change address command (aAb!)
  - B.1.6 Start measurement commands (aM!)
  - B.1.7 Start concurrent measurement commands (aC!)
  - B.1.8 Start measurement commands with cyclic redundancy check (aMC! and aCC!)
  - B.1.9 Stopping a measurement command
  - B.1.10 Send data command (aD0! aD9!)
  - B.1.11 Continuous measurement command (aR0! aR9!)
  - B.1.12 Extended commands
- B.2 SDI-12 transparent mode
  - B.2.1 Changing an SDI-12 address
- B.3 References

Campbell Scientific Wintersense SDI-12 Product Manual

Campbell Scientific Wintersense SDI-12 Sensor manual cover

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Campbell Scientific Wintersense SDI-12 Sensor Specification

The Campbell Scientific Wintersense SDI-12 Sensor is a specialized instrument designed for precise winter road surface condition monitoring. It utilizes SDI-12 communication protocol, which ensures seamless integration with a wide range of data loggers and other compatible devices. The sensor is engineered to measure road surface temperature, surface state (dry, moist, wet, snow, or ice), and grip or friction levels, providing critical data for maintaining road safety during winter conditions.

The sensor features a robust design to withstand harsh winter environments, with a weather-resistant housing that protects its internal components from moisture, salt, and other corrosive elements commonly encountered on roadways. Its operational temperature range is suited for extreme cold climates, ensuring reliable performance in sub-zero conditions.

The Wintersense sensor is equipped with advanced algorithms to differentiate between various surface states and calculate grip levels, offering real-time insights into road conditions. It is powered through SDI-12 connections, supporting low power consumption ideal for remote installations. The sensor's compact size and lightweight design facilitate easy installation on existing infrastructure, such as traffic posts or weather stations.

Data output from the Wintersense sensor is precise and reliable, enabling transportation agencies to make informed decisions regarding road maintenance and safety interventions. Its integration capabilities allow for scalable monitoring networks, enhancing the ability to respond promptly to changing weather conditions. Overall, the Campbell Scientific Wintersense SDI-12 Sensor is an essential tool for optimizing winter road management strategies, improving safety and operational efficiency.

Campbell Scientific Wintersense SDI-12 Sensor F.A.Q.

How do I integrate the Wintersense SDI-12 sensor with a data logger?

To integrate the Wintersense SDI-12 sensor with a data logger, connect the sensor’s SDI-12 output to the logger’s SDI-12 input using appropriate wiring. Configure the logger to recognize the sensor by setting the correct SDI-12 address and ensure it queries data at the desired intervals.

What should I do if the Wintersense SDI-12 sensor is not providing data?

First, check the wiring connections to ensure they are secure and correct. Verify that the sensor is powered and that the data logger is configured with the correct SDI-12 address. If the issue persists, consult the sensor's manual for troubleshooting steps or perform a sensor reset.

How can I change the SDI-12 address of the Wintersense sensor?

To change the SDI-12 address, use an SDI-12 command sequence through a compatible data logger or terminal software. Refer to the sensor’s manual for specific command instructions and address range limitations.

What maintenance is required for the Wintersense SDI-12 sensor?

Regularly inspect the sensor for physical damage and clean the sensor's surface to prevent contamination. Check connections and cables for wear and replace as necessary. Periodically verify sensor calibration and update firmware if required.

How do I calibrate the Wintersense SDI-12 sensor?

Calibration procedures vary depending on the specific measurement application. Refer to the sensor’s manual for detailed calibration instructions, which generally involve using standard references or solutions to adjust sensor output to known values.

Can the Wintersense SDI-12 sensor be used in extreme weather conditions?

Yes, the Wintersense SDI-12 sensor is designed to operate in a wide range of environmental conditions. However, it is essential to verify that the sensor's specifications align with the expected temperature and humidity ranges of your application.

What data can the Wintersense SDI-12 sensor provide?

The Wintersense SDI-12 sensor provides data on parameters such as temperature, moisture, and other meteorological factors. Check the sensor's documentation for a complete list of measurable parameters and data output formats.

How do I update the firmware on the Wintersense SDI-12 sensor?

Connect the sensor to a computer via the recommended interface and use the manufacturer's software tool to upload the firmware update. Follow the on-screen instructions to complete the process, ensuring the sensor remains powered throughout.

How do I troubleshoot inaccurate readings from the Wintersense SDI-12 sensor?

Verify that the sensor is properly calibrated and that there are no obstructions or contaminants affecting the sensor. Check for interference from nearby electronic devices and ensure that the data logger configuration matches the sensor specifications.

What is the best practice for installing the Wintersense SDI-12 sensor?

Install the sensor in a location representative of the measurement environment. Use proper mounting hardware to secure the sensor and protect it from physical damage. Follow installation guidelines provided in the sensor’s manual for optimal performance.