User`s Guide Model RF41 Introduction Specifications Description
Contents
1. User s Guide EXTECH INSTRUMENTS Battery Coolant Brix Refractometer Model RF41 Introduction Congratulations on your purchase of this Extech Refractometer Precision optical instruments should be handled gently avoid touching the optical surface Careful use of these instruments will provide years of reliable service Specifications Range O to 502C Propylene Glycol freeze point O to 502C Ethylene Glycol freeze point 1 15 to 1 30 specific gravity battery acid O to 402C cleaning fluid freeze point Resolution 12C Dimensions 6 3 x 1 6 x 1 2 160 x 40 x 30mm Weight 6 4 oz 180g Description Eyepiece Mirror Tube Adjustment screw Cover Plate eS Ye SS Prism Scale 5 amp E GLYcoL 6LYOoL 0 0 WATERLINE Operation This instrument measures the refractive index of a sample and displays the results in 2C or Specific gravity 1 Zero Adjustment Cover the prism with a few drops of distilled water Close the cover plate and view the light dark boundary shadowline If necessary turn the adjustment screw until the shadowline aligns with the scale s zero line The zero calibration should be performed at ambient temperature and should be repeated every 30 minutes if the temperature changes After the zero adjustment clean the prism with a soft cloth 2 Sample Preparation and Reading To take a sample reading open the cover plate and place a few drops of2. ion Visit the website www extech com for contact information A Return Authorization RA number must be issued before any product is returned The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification FLIR Systems Inc specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages FLIR s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Calibration Repair and Customer Care Services FLIR Systems Inc offers repair and calibration services for the Extech Instruments products we sell NIST certification for most products is also provided Call the Customer Service Department for information on calibration services available for this product Annual calibrations should be performed to verify meter performance and accuracy Technical support and general customer service is also provided refer to the contact information provided below Copyright 2013 FLIR Systems Inc All rights reserved including the right of reproduction in who
3. le or in part in any form www extech com RF41 EN V1 2 3 13
4. the sample on the measurement prism Close the cover plate so that the liquid spreads across the entire surface of the prism X X V instrument under a light source look through the eye guard to prevent stray light from entering the eyepiece and causing reflections without air bubbles or dry spots Allow the sample to remain on the prism for approximately 30 seconds While holding the eyepiece The brix concentration is determined by the intersection of the boundary of the light and dark fields on the scale If the scale appears out of focus adjust by rotating the eyepiece until the scale is in focus The instrument also features an It may be necessary to adjust the position of the light source to maximize the contrast of the shadowline Under normal conditions optimal contrast is obtained by holding the instrument underneath and perpendicular to a light source Once a reading has been taken wipe dry with a clean cloth do not wash or rinse and place the instrument in the supplied plastic case Store the instrument in a safe dry environment Warranty FLIR Systems Inc warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies to sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department for authorizat
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