à¤ÃÕèͧÇÑ´¤ÇÒÁà¤çÁ à¤Ã×èͧÇÑ´à¡Å×Í ã¹ÍÒËÒà ¹éÓ·ÐàÅ Salt meter Salinity Meter Refractometer > à¤Ã×èͧÇÑ´¤ÇÒÁà¤çÁ ¹éÓ·ÐàÅ EC170 Salt meter à¤Ã×èͧÇÑ´¤ÇÒÁà¤çÁ EC170 Salinity/Temperature Meter Waterproof meter with high-accuracy multi-ranging sensor Features : Measure Salinity in aquaculture, environmental studies, ground water, Koi ponds, irrigation, drinking water, and other applications Autoranging with 2 ranges of measurement Built-in NaCl Conductivity to TDS conversion factor Large 3-1/2 digit (2000 count) dual LCD Data Hold, Auto Power Off and Low Battery Indication Automatic Temperature Compensation Fixed Temperature Coefficient and Normalization Temperature One calibration point per range Waterproof design to withstand wet environment – meets IP65 standard Complete with salinity sensor, protective sensor cap, and 4 LR44 button batteries Specifications Ranges Max. Resolution Basic Accuracy Salinity 0 to 10.00ppt 10.1 to 70.0ppt 0.01ppt 0.1ppt ±2% FS Temperature 32°F to 122°F (0 to 50°C) 0.1°F/°C ±0.9°F/0.5°C Power Four LR44 button batteries Dimensions 1.3×6.5×1.4" (32×165×35mm) Weight 3.8oz (110g) EC170 Extech Salinity Salt Meter Temperature ¹éÓ´×èÁ ºèÍ»ÅÒ à¤Ã×èͧÇÑ´¤ÇÒÁà¤çÁ