Campbell Scientific SI-111 Product Manual

Campbell Scientific SI-111 Sensor manual cover
Pages 19
Year 0
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Campbell Scientific SI-111 Sensor Specification

The Campbell Scientific SI-111 Sensor is a precision instrument designed for accurate measurement of surface temperature through non-contact means. It operates using infrared thermometry, capturing thermal radiation emitted from a target surface to determine its temperature. The sensor is equipped with a germanium lens that focuses the infrared energy onto a thermopile detector, ensuring precise readings with a spectral response from 8 to 14 micrometers. This makes it highly effective for environmental and industrial applications where surface temperature monitoring is crucial.

The SI-111 sensor features a rugged, weather-resistant design, making it suitable for harsh outdoor conditions. It operates within a temperature range of -40°C to 70°C, allowing for versatile use across different climates. The sensor supports a field of view of 22 degrees, ensuring it can cover a substantial area from a fixed position. The analog output provided is compatible with a variety of data loggers and acquisition systems, facilitating seamless integration into existing monitoring setups.

Calibration of the SI-111 is conducted to minimize measurement errors, with an accuracy of ±0.2°C for temperatures within 20°C of the calibration point. The sensor's response time is less than 1 second, allowing for real-time data acquisition and analysis. Its compact size and lightweight construction simplify installation, whether mounted on a tripod or integrated into larger monitoring systems. Overall, the Campbell Scientific SI-111 Sensor is a reliable and precise tool for non-contact temperature measurement, offering robust performance in diverse environmental conditions.

Campbell Scientific SI-111 Sensor F.A.Q.

How do I install the Campbell Scientific SI-111 sensor?

To install the SI-111 sensor, mount it on a secure platform using the provided bracket. Ensure the sensor's field of view is unobstructed and directed towards the target surface. Connect the sensor's cable to your data logger, following the wiring diagram in the user manual.

What maintenance does the SI-111 sensor require?

Regularly clean the sensor's lens with a soft, damp cloth to remove dust and debris. Inspect the cable and connections for any signs of wear or damage. Periodically check the sensor's mounting to ensure it remains stable and correctly oriented.

How can I troubleshoot if the SI-111 sensor is not providing accurate readings?

First, ensure that the sensor is correctly oriented and unobstructed. Check all electrical connections for tightness and integrity. Verify that the data logger settings match the sensor's specifications. If problems persist, refer to the troubleshooting section of the SI-111 manual.

What is the correct way to calibrate the SI-111 sensor?

The SI-111 sensor is factory-calibrated and typically does not require field calibration. However, if recalibration is necessary, follow the calibration procedure outlined in the manual, using a black body calibrator to ensure accurate results.

Can the SI-111 sensor be used in extreme weather conditions?

Yes, the SI-111 sensor is designed to operate in a wide range of environmental conditions. Ensure that the sensor's operating temperature and humidity range match the expected conditions. Protect the sensor from direct precipitation if necessary.

How do I connect the SI-111 sensor to a data logger?

Connect the sensor's wires to the corresponding inputs on the data logger according to the wiring diagram provided in the sensor's manual. Ensure that each wire is securely connected and that the data logger is configured to interpret the sensor's output correctly.

What should I do if the SI-111 sensor's lens becomes scratched or damaged?

If the lens is lightly scratched, it may still function with minimal impact on accuracy. For significant damage, contact Campbell Scientific for a replacement lens or further assistance, as a damaged lens can affect measurement accuracy.

What is the field of view of the SI-111 sensor, and how does it affect installation?

The SI-111 sensor has a field of view of 22 degrees. When installing, ensure that the sensor is positioned to fully encompass the target area within this field of view for accurate measurements. Avoid obstructions that could interfere with the sensor's view.

How can I verify the accuracy of the SI-111 sensor's measurements?

To verify accuracy, compare the sensor's readings with a calibrated reference instrument or use a known temperature source. Ensure that all settings and configurations are correct, and perform checks under stable environmental conditions.

What are the power requirements for operating the SI-111 sensor?

The SI-111 sensor typically requires a DC power supply, operating within the specified voltage range detailed in the manual. Ensure that the power source is stable and capable of providing continuous power to the sensor.