Solar Light’s Model PMA2121 Digital Blue Light Safety Sensor indicates the effective irradiance weighted with the American Conference of Governmental Industrial Hygienists (ACGIH) Spectral Weighting Function for Blue Light Hazard. Employers, safety officers and risk managers can use this sensor to protect workers against the effects of excessive daily blue light exposure. Such exposure, according to numerous medical studies, can inflict permanent and irreversible damage to the eye, causing visual field defects and visual impairment. Light sources that may produce a blue light hazard include monochromatic and collimated lasers, collimated arc, and blue LEDs. To protect against retinal photochemical injury from chronic blue light exposure, the maximum exposure limit for a source subtending less than 0.011 radian should not exceed 10mJ/cm2 per 10,000 seconds of exposure (or approximately 2 hours 47 minutes.) For exposure periods greater than 10,000 seconds, the weighted irradiance should not exceed 1µW/cm2.
Some typical blue light levels are:
200W Halogen Lamp at 50 cm Distance – 70 [µW/cm2]
150W Xe Arc Lamp at 50 cm Distance – 600 [µW/cm2]
40W Fluorescent Tube at 2m Distance – 5 [µW/cm2]
1 YEAR STANDARD WARRANTY
SOLAR LIGHT COMPANY warrants that the equipment has been carefully tested, inspected and left the Factory in proper working condition, free of visible defects. SOLAR LIGHT COMPANY warrants the equipment to be free from defects in material and workmanship, under normal use and operation, for a period of one (1) year after the date of initial operation, or demonstration; or eighteen (18) months from the date of shipment from the Factory; or whichever occurs first. The warranty is limited to the free replacement of all-defective parts and free labor during the first year of warranty. Defective parts replaced under this warranty shall become the property of SOLAR LIGHT COMPANY. The above stated Warranty is subject to the following conditions: Equipment being installed within the United States of America, Canada, or sold by authorized SOLAR LIGHT COMPANY representatives or their agents outside the continental United States. The equipment being installed is operated and maintained in accordance with SOLAR LIGHT COMPANY’s operating instructions, maintenance instructions and specifications. Utilization of only SOLAR LIGHT COMPANY’s authorized parts and components. The utilization of a duly authorized representative for all work performed on SOLAR LIGHT COMPANY equipment during the warranty period. Any variation(s) to the above warranty must be in writing and mutually acceptable by SOLAR LIGHT COMPANY and the customer. The warranty shall not apply to damages resulting from errors in installation, nor shall it apply to any equipment, which has been subject to damages, alterations or misuse by the purchaser. Parts of the equipment, which would be generally considered as expendable service items during normal use, such as fuses, lamps, detector shields, etc., are not covered under the warranty. THERE ARE NO WARRANTIES, WHICH EXTEND BEYOND THIS DESCRIPTION, AND EXPRESSLY NO IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SOLAR LIGHT COMPANY BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR ANTICIPATED LOSS OF PROFITS SUFFERED BY THE PURCHASER. Extended Warranty Plans are also available.