à¤Ã×èͧÇÑ´¤ÇÒÁà¤çÁ Salt Meter ÊÓËÃѺÇÑ´¤ÇÒÁà¤çÁ ã¹ÍÒËÒà «ÍʶÑèÇàËÅ×ͧ, «ÍÊÁÐà¢×Íà·È, ÁÒÂͧà¹Ê, ¹éÓ¼ÅäÁé ÏÅÏ à¤Ã×èͧÇÑ´¤ÇÒÁà¤çÁ ES-421 Digital salt-meter The digital salt-meter, ES-421 employs a funnel-shaped sensor section (conductivity), which measures the salt % of a sample (dilute solution of soy sauce, ketchup,mayonnaise, Worcester sauce, sqeezed juice of pickles, etc.) very small sample needed (1.0ml approx. is enough for measurement). Specifications Model ES-421 Cat.No. 4210 Scale Salt concentration (g/100g) Measurement Method Conductivity method Measurement Range 0.00 to 10.0% Resolution 0.01% for salt concentration of 0.00 to 2.99% 0.1% for salt concentration of 3.0 to 10.0% Measurement Accuracy Displayed value ± 0.05% (for salt concentration of 0.00 to 0.99%) Relative precision ± less than 5% (for salt concentration of 1.00 to 10.0%) Temperature compensation range 10 to 40°C (Automatic Temperature Compensation) Ambient Temperature 10 to 40°C Power Supply 006P Dry battery (9V) Dimensions & Weight 17×9×4cm, 300g (Main Unit only) Options · NaCl Solution 2.84% (±0.05%) AB284 [*1] : RE-120284 [*1] Calibration Certificate : Contact an ATAGO representative for details. Atago ES-421 Refractometer Salt Meter à¤Ã×èͧÇÑ´¤ÇÒÁà¤çÁ