PORTABLE REFRACTOMETER OPERATING INSTRUCTIONS
Contents
1. screw 3 to make the light dark boundary coincide with the water line Open the cover plate 2 and clean the water on the prism and cover plate by soft cotton flannel then drop one or two drops of the serum plasma Close the cover plate and press it lightly the corresponding dial reading on the light dark boundary is the concentiration oi aibumen After measurement clean away the adherent on the surface of prism and cover plate by moist gauze After drying is should be stored perfectly ATTENTIONS AND MAINTENANCE fi Adjusting the null liquid and specimen should be under the same temperature if the temperature varied greatly the null point should be adjusted once per 30 minutes The prism must be cleaned completely because any residual impurity on it could cause error during measuring After usage don t use water to wash the instrument so as to avoid water entering into the pipe of the instrument As it is a kind of precision optical instrument you should hand it gently and take good care of it don t touch and scratch the optical surfaces It should be kept in the environment of dry clean and non corrosiveness air so as to prevent the surface of it turning mouldy and foggy Please avoid strong shock during transportation lf the consumers use the instrument in accordance with the mentioned method of usage it guarantee that instrument can t break down the optical performance can t change DIALS ar gt2. PORTABLE REFRACTOMETER OPERATING INSTRUCTIONS SERIES MODEL MEASURING SIZEOxL WEIGHT RESOLUTION STY E _ORD ATC_ _ORD ATC RANGE SOF ORD ATC ORD ATC FG 201 2114 0 100 o t 29x160mm 175g Sali alinltyFG 202 212 0 28 29x160mm 1759 0 12 Brix 0 1 FG 203 21 29x160mm 175 Brix CAORS 0 100 o Salt 1 0 Salinity 0 32 Brix 0 2 FG 204 214 29x160mm 175 0 28 Salt ORDinary If the condition temperature isn t 20 C it need to adjust the zero for the measuring accuracy ATC Automatic Temperature Compensation The ATC device is a built in type Its compensation temperature range 10 C 30C NAME OF COMPONENTS 1 Prism 2 Cover plate 3 Correct screw 4 Mirrortube 5 Eyepiece Adjusting ring of diopter SCCM ERTS LR RRR ERE R ee eee ere ee SCCM ETRE MIST RRR eee eee ee TTT eee eee ee HL Lt APPLICATION FG201 211 FG202 212 were developed for measuring of salt in sea water and prepared food solution etc FG203 213 FG204 214 were developed for most general purpose work These can measure Brix content and salt content METHOD OF OPERATION 1 Aim the front end of the refractometer to the direction of bright light and adjust the adjusting ring of diopter 5 until the reticle can be seen clearly E Adjustment of null Open the cover plate 2 drop one or two drops of pure distilled water on the surface of the prism Close the cover plate and press it lightly then adjust the correct
3. z 1 07 BC 1 060 E 1 1 An nw f t 1 Ueu ET a A 1010 dz Brix Salinity SALINITY FG 201 211 FG 202 212 FG 203 213 FG 204 214 ACCESSORY 1 Plastic pipette 2 2 Screw driver 1 3 Cotton flannel 1
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