By now you may have accumulated quite a lot of readings in Data.PRN the default data file. There is no harm in this, but you may want to put further test results into new file, or maybe try out a .CSV file. If so, follow the Data Storage instructions a few pages back.

Measuring Leaf Area Index without a Beam Fraction Sensor

This is the most complicated of the combinations of probe and display settings. The Measurement Options sections discusses in detail the conditions for which it is possible and desirable to make this measurement.

♦set the Ext sensor: to none.

The Next Reading screen now includes extra options for reading INCIDENT and B FRAC - and it won’t let you proceed with a READ until you’ve taken these readings.

♦Highlight B FRAC and press Enter.

Hold the probe level above the canopy as before, but now cast a small shadow over part of the probe. Don't hold the shade too close to the probe - otherwise it will cut out some of the diffuse light as well.

SunData looks at the readings from the photodiodes and uses the lowest value to calculate the Diffuse component of the incident light. It uses the highest photodiode values to calculate the Total incident, and uses these two values to calculate and display the Beam Fraction:

Note: SunData uses this value for the Beam Fraction to increase the accuracy of the calculation of Leaf Area Index, as explained in the LAI Theory section. However, this is a secondary effect, and you should not worry unduly about the second decimal place for the Beam Fraction value.

♦Press Enter or the red button to STORE the Beam Fraction reading.

You can now continue to take readings with the probe and display the LAI as before

-that is, until the light conditions change, when you will need to retake the Beam Fraction readings. If you wish to recheck only the incident light reading, you can do so as follows:

♦Hold the probe level above the canopy, and make sure as little as possible of your own outline is being seen by the probe.

♦ Use the ← → arrow keys to highlight INCIDENT, and press Enter.

SunData will display the reading from the probe:

♦Press Enter or the red button to store this as the Incident PAR reading.

SunScan User Manual v 1.05

SunScan Tutorial • 23

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Delta Electronics SS1-UM-1.05 user manual Measuring Leaf Area Index without a Beam Fraction Sensor
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SS1-UM-1.05 specifications

Delta Electronics has long been recognized for its innovative solutions in power and thermal management technologies. One of its notable products is the SS1-UM-1.05, a compact and efficient power supply module designed to meet the needs of a variety of applications, from industrial automation to telecommunications.

The Delta SS1-UM-1.05 is a key component in the company’s extensive portfolio, providing reliable and stable power supply for both demanding and sensitive electronic equipment. One of the main features of this module is its high efficiency, which typically exceeds 90%. This not only minimizes energy consumption but also reduces heat generation, making it an ideal choice for applications where thermal management is crucial.

Another significant characteristic of the SS1-UM-1.05 is its wide input voltage range, which allows it to operate effectively in various environments. The module supports a voltage range from 90 to 264 VAC, ensuring consistent performance even in fluctuating supply conditions. This versatility makes it well-suited for global applications, accommodating different electrical standards and requirements.

The SS1-UM-1.05 also boasts a compact footprint, which is essential for space-constrained installations. Its design emphasizes not only performance but also ease of integration into existing systems. The module provides multiple output voltage options, allowing it to cater to specific power requirements, whether it be for industrial machinery or consumer electronics.

In terms of technologies, the SS1-UM-1.05 incorporates advanced power conversion technologies that enhance its overall performance. It features overload protection and thermal shutdown mechanisms to safeguard both the module and the equipment it powers from potential damages due to electrical faults. Moreover, it has low electromagnetic interference (EMI) emissions, which is crucial for environments sensitive to electrical noise.

The SS1-UM-1.05 is also designed with a robust enclosure that adheres to stringent safety and environmental standards. This enhances its durability and reliability, ensuring it can withstand harsh operating conditions. With these features, Delta Electronics demonstrates its commitment to delivering high-quality products that meet the evolving needs of industries worldwide.

Overall, the Delta SS1-UM-1.05 power supply module is an exemplary solution for those seeking a reliable, efficient, and compact power source. Its advanced features and technologies make it an indispensable component in modern electronic systems.
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