Contents

Revision and Copyright Information
Limited Warranty
Assistance
Safety
Table of Contents
1. Introduction
2. Precautions
3. Initial Inspection
4. QuickStart
5. Overview
6. Specifications
7. Installation
- 7.1 Placement in Soil
- 7.2 Wiring
- 7.3 Programming
- 7.4 Soil Heat Flux and Storage
8. Maintenance
9. References
Appendix A. Importing Short Cut Code Into CRBasic Editor
Appendix B. Example Program
Appendix C. General Theory of Heat Flux Sensors
- C.1 General Theory
- C.2 Extended Theory
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Campbell Scientific HFP01 Product Manual

Campbell Scientific HFP01 Sensor manual cover

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Campbell Scientific HFP01 Sensor Specification

The Campbell Scientific HFP01 is a highly sensitive heat flux sensor designed to measure the rate of heat transfer through a surface. This sensor is primarily used in applications such as soil heat flux measurement, building energy studies, and research involving thermal conductivity. The HFP01 features a thermopile sensor that generates a voltage output proportional to the heat flux passing through it, enabling precise and reliable data collection. The device is constructed with a robust, water-resistant design, allowing it to perform accurately in various environmental conditions, including extreme temperatures and high humidity. It is equipped with a black thermally conductive plastic body that ensures efficient heat transfer and minimal thermal resistance, making it suitable for long-term field deployment and laboratory use.

The sensor has a nominal sensitivity of approximately 60 microvolts per watt per square meter, and it requires a data logger or another voltage-measuring device to record and interpret the sensor's output. The HFP01 operates effectively within a temperature range of -30°C to +70°C, and it can measure heat flux in a range of -2000 to +2000 watts per square meter. For optimal performance, the sensor should be installed flush with the measurement surface, ensuring good thermal contact. Calibration is typically carried out by the manufacturer, and recalibration is recommended every two years to maintain accuracy. The Campbell Scientific HFP01 is a reliable, durable, and precise instrument for researchers and professionals requiring detailed heat flux measurements across various scientific and industrial applications.

Campbell Scientific HFP01 Sensor F.A.Q.

How do I install the Campbell Scientific HFP01 sensor correctly?

To install the HFP01 sensor, select a location free of rocks and debris. Dig a trench to the required depth and ensure the sensor's surface is flush with the soil. Connect the sensor to your data logger following the wiring diagram provided in the manual.

What is the procedure for calibrating the HFP01 sensor?

The HFP01 sensor is factory-calibrated. However, if recalibration is needed, use a calibration kit and follow the instructions provided by Campbell Scientific. Ensure stability and uniformity in temperature and humidity during the calibration process.

How can I troubleshoot if the HFP01 sensor is not providing accurate readings?

First, check all connections and ensure there are no breaks in the cable. Verify the data logger configuration and settings. If issues persist, inspect the sensor for any physical damage or debris and clean if necessary.

What maintenance is required for the HFP01 sensor?

Regularly inspect the sensor for physical damage and clean any debris. Check cable integrity and connections. Recalibration may be necessary after extended use or if the sensor is exposed to extreme conditions.

Can the HFP01 sensor be used in all soil types?

The HFP01 sensor is designed for use in a variety of soil types, but accuracy may vary. It's important to ensure proper installation and calibration specific to the soil type for optimal results.

What are the common error codes associated with the HFP01 sensor and how can they be resolved?

Consult the sensor’s manual for specific error codes. Generally, errors are resolved by checking wiring connections, ensuring proper calibration, and verifying data logger settings.

How do environmental factors affect the performance of the HFP01 sensor?

Extreme temperatures, moisture levels, and soil conditions can affect sensor performance. Regular maintenance and calibration help mitigate these effects. Ensure the sensor is installed in an environment within its operational specifications.

What are the steps to properly disconnect and store the HFP01 sensor?

To disconnect the sensor, first turn off the data logger. Carefully unplug the sensor, ensuring no damage to the connectors. Clean the sensor, remove any dirt, and store it in a dry and stable environment.

Can the HFP01 sensor be integrated with other environmental monitoring systems?

Yes, the HFP01 sensor can be integrated with various data loggers and environmental monitoring systems. Ensure compatibility by consulting the technical specifications and using appropriate interfacing equipment.

What should I do if the HFP01 sensor shows no data output?

Check all electrical connections and ensure the data logger is functioning correctly. Verify the sensor is not physically damaged. If problems persist, consult the user manual or contact technical support for further assistance.