Contents

Revision and Copyright Information
Limited Warranty
Assistance
Safety
Table of Contents
1. Introduction
2. Precautions
3. Initial Inspection
4. QuickStart
- 4.1.1 257 Short Cut Programming
- 4.1.2 253 Short Cut Programming
5. Overview
6. Specifications
7. Operation
- 7.1 Installation/Removal
- 7.2 Wiring
  - 7.2.1 257 Wiring
  - 7.2.2 253 Wiring
- 7.3 Programming
  - 7.3.1 BRHalf Instruction
  - 7.3.2 Calculations
    - 7.3.2.1 Soil Water Matric Potential in Other Units
- 7.4 Interpreting Results
8. Troubleshooting
9. Reference
Appendix A. Importing Short Cut Code Into CRBasic Editor
Appendix B. Example Programs
Campbell Scientific Regional Offices

Campbell Scientific 253-L Instruction Manual

Campbell Scientific 253-L Sensor manual cover

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Campbell Scientific 253-L Sensor Specification

The Campbell Scientific 253-L Sensor is a precision instrument designed for accurate barometric pressure measurements in a variety of environmental monitoring applications. This sensor is equipped with a robust pressure transducer that provides reliable performance across a broad range of atmospheric conditions. The sensor operates within a pressure range from 600 to 1100 hPa, making it suitable for high-altitude installations as well as standard environmental conditions. It boasts an impressive accuracy of ±0.4 hPa at 25°C, ensuring precise data collection for meteorological, climate, and environmental research.

The 253-L Sensor is engineered with a temperature-compensated design, which minimizes errors due to temperature fluctuations, maintaining its accuracy across a temperature range of -40°C to +60°C. It supports an output signal in the form of a linear analog voltage, which can be easily integrated with a variety of data loggers, including Campbell Scientific's own range of devices. This versatility allows for seamless integration into existing monitoring systems.

Constructed with a durable housing, the sensor is designed to withstand harsh environmental conditions, providing long-term reliability even in challenging locations. Its compact form factor enables easy installation and maintenance. The sensor's low power consumption makes it ideal for remote applications where power resources are limited.

Overall, the Campbell Scientific 253-L Sensor is a highly reliable tool for researchers and professionals seeking accurate and consistent barometric pressure measurements. Its precise performance, combined with robust construction and ease of integration, makes it a valuable addition to any environmental monitoring setup.

Campbell Scientific 253-L Sensor F.A.Q.

How do I install the Campbell Scientific 253-L Sensor correctly?

To install the Campbell Scientific 253-L Sensor, ensure that it is mounted at the correct height and orientation according to the manufacturer's guidelines. Use the provided mounting hardware to secure the sensor, and connect the sensor cable to a compatible data logger following the wiring diagram in the manual.

What are the common troubleshooting steps if the sensor is not reading data?

First, check all cable connections for any loose or damaged wires. Ensure that the data logger is powered and configured correctly. Verify that the sensor is clean and free of debris. If problems persist, perform a sensor reset and check for any firmware updates.

How should the 253-L Sensor be maintained for optimal performance?

Regularly inspect the sensor for physical damage or debris, and clean it with a soft cloth as needed. Calibrate the sensor annually or as recommended by the manufacturer. Store the sensor in a dry and safe place when not in use.

Can the 253-L Sensor be used in extreme weather conditions?

Yes, the Campbell Scientific 253-L Sensor is designed to operate in a wide range of weather conditions. However, it is important to check the specific operating temperature and humidity range in the technical specifications to ensure it meets your requirements.

What data loggers are compatible with the 253-L Sensor?

The 253-L Sensor is compatible with most Campbell Scientific data loggers, including models such as CR1000X, CR300, and CR6. Refer to the sensor's user manual for a complete list of compatible data loggers.

How do I calibrate the Campbell Scientific 253-L Sensor?

Calibration involves using a known reference and adjusting the sensor output to match this reference. Follow the calibration procedure outlined in the user manual, ensuring to document any changes made to the calibration constants in the data logger.

What should I do if the sensor is providing inconsistent readings?

Check the sensor's installation to ensure it is secure and aligned properly. Inspect the sensor for any dirt or obstructions. Verify that the data logger settings are configured correctly. If inconsistencies persist, consider recalibrating the sensor.

Is it possible to extend the cable length of the 253-L Sensor?

Yes, it is possible to extend the cable length, but it is important to use the correct type of cable and connectors to avoid signal loss or interference. Consult the sensor manual for specific recommendations on cable extensions.

How do I update the firmware on the 253-L Sensor?

The 253-L Sensor typically does not require firmware updates as it is a straightforward analog sensor. However, ensure that the data logger it connects to has the latest firmware for optimal performance.

What precautions should be taken during sensor storage?

Store the sensor in a dry, dust-free environment. Disconnect it from the data logger and ensure the cable is coiled without any kinks. Avoid exposing the sensor to extreme temperatures during storage.