à¤Ã×èͧÇÑ´áʧ LX-90+ Digital Lux Meter à¤Ã×èͧÇÑ´áʧẺ¾¡¾Ò Ẻ´Ô¨ÔµÍŠ˹éҨ͢¹Ò´ LCD ¤ÇÒÁàÃçÇ㹡ÒÃÇÑ´¤èÒ 0.5 ÇÔ¹Ò·Õ ªèǧÇÑ´áʧ 0 ¶Ö§ 100,000 Lux ¤ÇÒÁÅÐàÍÕ´ 1 Lux , 10 Lux , 100 Lux áÊ´§¤èÒ “1” àÁ×èÍÍèÒ¹¤èÒà¡Ô¹ Rang ·ÕèÇÑ´ ¡ÒûÃѺªèǧÇÑ´ Ẻ Manual à«ç¹à«ÍÃìÇÑ´áʧẺ Silicon Photodiode ä´éÁҵðҹ CIE Photopic (International standard for the reply the average color of the human eyes) ÁÕÃкº¤éÒ§¤èÒ˹éÒ¨Í , àµ×͹ẵàµÍÃÕèµèÓ ãªéẵàµÍÃÕè ¢¹Ò´ 9 âÇÅ·ì ¢¹Ò´µÑÇà¤Ã×èͧ 130 x 72 x 30 ÁÔÅÅÔàÁµÃ ¹éÓ˹ѡ 170 ¡ÃÑÁ ¾ÃéÍÁ¡ÃÐà»ëÒ¾¡¾ÒÊдǡ Features Precise and easy readout. High accuracy in measuring. LSI-circuit use provides high reliability and durability. Permits a wide range of light measurements. LOW BATTERY indicator. LCD display provides low power consumption and clearly read out evening high ambient light. Adjusting zero automatically and excellent operation. Separate LIGHT SENSOR allows user take measurements at an optimum position. General Specifications Display : 3 ½ digits LCD display, maximum reading value display 1999 Ranges : 1-100,000Lux. (3 Ranges) 2,000Lux range : reading × 1 20,000Lux range : reading × 10 100,000Lux range : reading × 100 Range Resolution Accuracy (23±5°C) 0 ~ 1,999Lux 1Lux ±(4%rdg + 2d) 2,000 ~ 19,999Lux 10Lux ±(4%rdg + 2d) 20,000 ~ 100,000Lux 100Lux ±(5% + 2d) NOTE : Accuracy tested by a standard parralle light tungsten lamp of 2854°K temperature Repeatability : ±2% Temperature Characteristic : ±0.1d / °C Test rate : 2 times / sec. Photo detector : one silicon photo diode with filter. Operation temperature-humidity : 0°C to 40°C (32°F - 104°F) 0 ~ 70%Rh Storage temperature-humidity : -10°C to 50°C (14°F - 140°F) 0 ~ 80%Rh Over-input : indication of “1” (2,000Lux/20,000Lux) indication of “OVER” (100,000Lux) Weight : 170g Power supply : one 9V battery, Consumption current approx. 2mA Dimension : 106×57×26mm (photo detector); 130×72×30mm (meter body); 150cm (photo detector lead) Accessories : Instruction-manual, battery, carrying case Light meter LM-801 Lux meter PROTROS à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´áʧ