![]() ![]() ![]() ![]() Use a dry, soft cloth to clean the intrument.Allowing the meter to dry out naturally or by placing it in a bag with silica gel to restore normal functionality. If accidentally exposed to extreme humidity or damp conditions, abnormally high readings may occur. Do not subject the meter to extremes in temperature, humidity, shock or dust.Although higher output lamps of similar SPD’s will generally read higher than lower output lamps, ones that peak near 290-300 nm (as does the meter response) will read higher than ones peaking near 313 nm even if the total UVB output of both is the same. When using this meter to compare different type lamps, due to their different spectral power distributions, the readings should be considered relative rather than absolute.If acrylic blocks much UVB it should be replaced. When checking UVT acrylic transmission, take reading through acrylic then remove acrylic and hold meter sensor at approximately the same distance from lamp as the acrylic shield was located.If unsure of what original new values were, replace lamp(s) with new ones of the same kind and compare to old ones.Take overall reading at exposure distance, or check individual lamps close to surface. Lamps should be replaced when output drops to about 50% of their original (new) readings.When checking aging of lamps, keep measuring distance and locations constant.Allow lamps to warm-up prior to taking readings (at least 15 min).Wear eye protection when checking UV lamps (UV-block wrap around glasses).Proper Usage of Solarmeter ® Ultraviolet Radiometer for Lamp Aging Tests Under typical service load, a standard 9V battery will last around 2 years. Below 6.5V, the numbers on the LCD display will begin to dim, indicating the need for battery replacement. Battery operation voltage is viable from 9V down to 6.5V. For best results take note of the distance the reading was taken from the UV source in order to ensure repeatable results. Press and hold the push-button switch on the face of the meter. To operate your Solarmeter, aim the sensor window located on the top panel of the meter directly at a UV source. Interference filter blocks most UVA from response as shown on the Spectral Sensitivity Graph. In recent years, integrated mitigation studies have improved the characterizations of mitigation pathways.4.2L x 2.4W x 0.9D (in) / 106.7L x 61W x 22.9D (mm) The assessment is contingent upon available integrated assessment literature and model assumptions, and is complemented by other studies with different scope, for example, those focusing on individual sectors. The assessed pathways describe integrated, quantitative evolutions of all emissions over the 21st century associated with global energy and land use and the world economy. Since 2000, the estimated level of human-induced warming has been equal to the level of observed warming with a likely range of ☒0% accounting for uncertainty due to contributions from solar and volcanic activity over the historical period ( high confidence). Accordingly, warming from pre- industrial levels to the decade 2006–2015 is assessed to be 0.87☌ ( likely between 0.75☌ and 0.99☌). For periods shorter than 30 years, warming refers to the estimated average temperature over the 30 years centred on that shorter period, accounting for the impact of any temperature fluctuations or trend within those 30 years. Unless otherwise specified, warming is expressed relative to the period 1850–1900, used as an approximation of pre-industrial temperatures in AR5. Global warming is defined in this report as an increase in combined surface air and sea surface temperatures averaged over the globe and over a 30-year period. Human-induced warming reached approximately 1☌ ( likely between 0.8☌ and 1.2☌) above pre-industrial levels in 2017, increasing at 0.2☌ ( likely between 0.1☌ and 0.3☌) per decade ( high confidence). This chapter frames the context, knowledge-base and assessment approaches used to understand the impacts of 1.5☌ global warming above pre-industrial levels and related global greenhouse gas emission pathways, building on the IPCC Fifth Assessment Report (AR5), in the context of strengthening the global response to the threat of climate change, sustainable development and efforts to eradicate poverty. ![]()
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