This means that in strong sun (high Beam Fraction) the canopy volume sampled is fairly small and well defined. As the Beam Fraction decreases, the volume sampled increases, and has less well defined limits.

Preferred light and weather conditions

These also will significantly influence your field operations.

Limitation

Comments

Time of day

Preferably within 3 hours either side of solar noon depending on

 

the location and season, to meet the next two conditions.

Solar zenith angle

Measurements are easier when the sun is high. Probe and BFS

 

levelling errors become larger beyond zenith angles of greater

 

than 60° , especially for LAI

Incident light level -

Preferably above about 200 mol.m-2.s-1. Accuracy degrades

absolute

below this figure.

Light level - rate of

With the BFS, avoid only the very fastest changes between bright

change

sun and cloud.

 

With no BFS: slow-changing conditions needed.. For LAI, with no

 

BFS, slow change of direct and diffuse components.

Full overcast, or full

SunScan LAI model copes with both, but full sun will usually give

sun in blue sky

the best results. Broken cloud is also satisfactory.

Planning for the sun’s position

The SunData software on the PC contains a useful calculator for solar zenith angles on any date, to help you plan appropriate times to make your measurements. This can be accessed from the Utilities menu Alt+Utilities, Zenith calculator. The default values are taken from the Site Settings you are currently using, but can be changed within the solar predictor without affecting any settings elsewhere in the program.

SunScan User Manual v 1.05

Measurement options 43

Page 43
Image 43
Delta Electronics SS1-UM-1.05 user manual Preferred light and weather conditions, Planning for the sun’s position

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.

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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.