REF201_手册说明书指南

Operation ManualBrix refractometerModelRangeMin.DivAccuracyRHB-10/ATC0-10%Brix0.1%Brix±0.10%RHB-18/ATC0-18%Brix0.1%Brix±0.10%RHB-32/ATC0-32%Brix0.2%Brix±0.20%RHB-62/ATC28-62%Brix0.2%Brix±0.20%RHB-82/ATC45-82%Brix0.5%Brix±0.50%58-90%Brix0.5%Bri×±0.50%BrixRHB-90/ATC38-43Be'0.5Be±0.50Be'12-27%water1%water±1%water58-92%Brix0.5%Brix±0.50%BrixRHB-92/ATC38-43Be0.5Be'±0.50Be'12-27%water1%water±1%waterRHB0-500-50%Brix1%Brix±1%BrixRHBO-800-80%Brix1%Brix±1%BrixRHB0-900-90%Brix0.2%Brix±0.2%BrixRemarks:1)lf new style model,"N"will be added in the model name.such as RHBN-32ATC etc..2)ATC Compensation Range:From 10'C to 30C (50F to 86'F)Parts:44tNew Design Parts1----Daylight Plate:2--C'alibration Serew:3..--Focus Adjustment:4----Eyepicce:5----Calibration Screw BlockMethod of operation:1)Aim the front end of the refractometer to the direction of bright light,and adjust the eyepiece until the reticle can beseen clearly.2)Adjustment of null:Open the daylight plate and place 2-3 drops of distilled or R.O.water on the main prism.Close the daylight plate andpress it lightly so the water spreads across the entire surface of the prism without air bubbles or dry spots.Allow thesample to remain on the prism for approximately 30 seconds.Then adjust the Calibration Screw until the light/darkboundary coincides with the null line.Adjustment of refractometer with temperature compensation function should bemade under the condition of 20((68)environmental temperature.When working temperature of the room orenvironment(not the sample)changes by more than 5F.we recommend recalibration to maintain accuracy.Model RHB-62/ATC:Calibration by using a saturated sodium chioride solution.The refractive index of the saturatedsodium chloride solution is:when temperature is at 15(.adjust to 29.9%:when it is at 20C.adjust to 29.6%:when it isat25℃，adjust to29.2%.Model RHB-82/ATC,RHB-90/ATC and RHB-92/ATC:calibration reference:Drop one drop of dioptric oil on the brightsurface of the reference biock.Open the cover plate.stick the reference blockon the surface of the prism,and press it lightly with your hand,so that it can't slide down,rotate and adjust thecalibration screw to make the light/dark boundary coincide with the reference line(Brix 78.8%).3)Operation procedure is done after calibration and it is done in essentially the same manner as calibration.Open thedaylight plate.Clean the surface of prism by soft cotton cloth.Drop 2-3 drops of solution to be measured on the mainprism.Close the daylight plate and press it lightly.then read the corresponding scale of light/dark boundary.Thereading is the Brix value of the measured solution.4)After measurement,clean away the measured solution on the surface of prism and cover plate by moist cotton cloth,.After drying,it should be shored perfectly.Warnings-Maintenance: