â·ÃÊͺ¶ÒÁÃÒ¤Ò Quality Meter à¤Ã×èͧÇÑ´¤èÒ¾Õ-àͪ à¤ÃÕèͧÇÑ´¡Ã´´èÒ§ à¤Ã×èͧÇÑ´¤Ø³ÀÒ¾¹éÓ à¤Ã×èÍÇÑ´¡Ã´´èÒ§ PH meter > à¤Ã×èͧÇÑ´¡Ã´´èÒ§ ¾Õàͪ ÁÔàµÍÃì 5 in 1 Waterproof ExStik II pH/Conductivity/TDS/Salt Meter EC510 à¤Ã×èͧÇÑ´¡Ã´´èÒ§ ¾Õàͪ ÁÔàµÍÃì EC510 5 in 1 Waterproof ExStik II pH/Conductivity/TDS/Salt Meter EC510 *********************¤Ø³ÊÁºÑµÔàËÁ×͹ EC500 áµèà¾ÔèÁ Accessory ´Ñ§¹Õé********************* Kit includes: EC500, 84µS, 1413µS, 12880µS calibration standards, pH buffer pouches (1 each of 4, 7, 10pH plus rinse solution), weighted base, 3 sample cups with caps, and case à¤Ã×èͧÇÑ´¡Ã´´èÒ§ ÇÑ´¤ÇÒÁ¹Óä¿¿éÒ ÇÑ´ÍسËÀÙÁÔ TDS ã¹à¤Ã×èͧà´ÕÂǡѹ Waterproof ExStik® II pH/Conductivity Meter Combination rugged flat surface pH electrode with autoranging high accuracy Conductivity cell Measures 5 parameters including Conductivity, TDS, Salinity, pH, and Temperature using one electrode 9 units of measure: pH, µS/cm, mS/cm, ppm, ppt, mg/L, g/L, °C, °F Analog bargraph indicates trends Memory stores up to 25 labeled readings Adjustable Conductivity to TDS ratio from 0.4 to 1.0; 0.5 fixed Salinity ratio RENEW feature alerts user when electrode needs replacement Specifications Range Max Resolution Basic Accuracy Conductivity 0 to 199uS/cm, 200 to 1999uS/cm, 2.00 to 19.99mS/cm 0.1uS/cm +/-2%FS TDS/Salinity 0 to 99.9ppm (mg/L), 100-999ppm (mg/L) 1.00 to 9.99ppt 0.1ppm (mg/L) +/-2%FS pH 0.00 to 14.00pH 0.01pH +/-0.01pH Temperature 23 to 194F (-5 to 90C) 0.1F/C +/-1.8F/1C Waterproof IP57 Memory 25 datasets Dimensions 1.4x7.3x1.6" (36x186x41mm) Weight 3.8oz (110g) All in one Conductity EC Meter EC510 Extech pH Meter Salt Meter TDS Meter Temperature Total Dissolved Solids Water Quality Meter à¤Ã×èͧÇÑ´¤ÇÒÁ¹Óä¿¿éÒ à¤Ã×èͧÇÑ´¤ÇÒÁà¤çÁ à¤Ã×èͧÇÑ´¤Ø³ÀÒ¾¹éÓ à¤Ã×èͧÇÑ´¤èÒ EC à¤Ã×èͧÇÑ´¤èÒ TDS à¤Ã×èͧÇÑ´¤èҡô-´èÒ§ à¤Ã×èͧÇÑ´¤èÒ¾Õàͪ à¤Ã×èͧÇÑ´µÐ¡Í¹ à¤Ã×èͧÇÑ´ÁÇÅÊÒÃÃÇÁÅÐÅÒÂã¹¹éÓ à¤Ã×èͧÇÑ´ËÅÒ¤èÒ à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ áºº»Ò¡¡Ò