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Summary of Contents for Reichert AR700
- Page 1 AR7 SERIES Automatic Refractometer User’s Guide...
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Page 3: Table Of Contents
Table of Contents Preliminary Information Table of Contents Warnings and Cautions Introduction Congratulations on your Purchase Environmental Conditions Electrical Ratings/Specifications Instrument Features Instrument Initialization Set Up Operation Set Point Calibration Multi Point Calibration Sample Reading Shadow line display Operational Parameters / Sample Temperature Effects on Readings Features Automatic Temperature Compensation... -
Page 4: Warnings And Cautions
WARNING: THE AR7 SERIES SHOULD BE USED IN STRICT ACCORDANCE WITH THE INSTRUCTIONS OUTLINED IN THIS USER’S GUIDE. THE SAFETY OF THE OPERATOR AND THE PERFORMANCE OF THE INSTRUMENT CANNOT BE GUARANTEED IF USED IN A MANNER NOT SPECIFIED BY REICHERT INC. Symbol Information The following symbols appear on the instrument: CAUTION: Risk of electric shock CAUTION: Replace with same type and rating fuse 5x20, 3.15A,... -
Page 5: Introduction
INTRODUCTION Congratulations on your purchase of your new Reichert AR7 SERIES Refractometer. This manual describes the proper operation and care of this state of the art instrument. The AR7 SERIES is an automatic, bench top refractometer with digital read out and is capable of measuring % Solids (Brix), % Solids-TC (Brix-Temperature Compensated, Sucrose), Refractive Index and Refractive Index-TC. -
Page 6: Environmental Conditions
Pollution degree 2 • Altitude up to 2,000 meters ELECTRICAL RATINGS/SPECIFICATIONS The Reichert AR7 SERIES incorporates an auto sensing, switching AC power supply. Never use an adapter, which will interrupt the protective grounding. • Caution: Risk of electrical shock exists if the cover of the AR7 SERIES is removed. -
Page 7: Instrument Features
INSTRUMENT FEATURES Instrument Display – Digitally displays measurement values, operator instructions and error messages. Reichert Automatic Refractometer AR700 Main Ver. 2.01 LSA Ver. 1.57 CPLD Ver. 0005 To calibrate press CALIBRATE or for set up press SETUP 09:05 Well Temp 20.02... -
Page 8: Set Up
D. Turn the instrument on by activating the power switch located on the rear panel. E. Set at the desired operating temperature in the set up screen by pressing SET UP and scrolling to Temperature Setpoint. AR700 Setup Calibration Auto Temperature Channel/... - Page 9 E. Follow the displayed instructions to clean prism and press “CALIBRATE” again. Clean prism and press CALIBRATE again to re initiate or any other key to cancel Well Temp 20.01 C F. Select reading mode by pressing “MODE”, Index-TC, Solids-TC. Use MODE to select mode Current mode INDEX-TC...
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Page 10: Multi Point Calibration
Clean with soapy water, methanol or Isopropyl alcohol as required, followed by distilled water then dry the prism and well. Press the “SET UP” key on the touch panel, the “Set Up” screen will appear. AR700 Setup Calibration Auto Temperature Channel/... - Page 11 Select the next point using the up/dwn keys to highlight the desired point, for example: 1.51416. Press “READ” to accept. Note that calibration must be in ascending order of refractive index value. If the calibration standard has a value other than listed, move the curser to the value that is inbetween two values that bracket the standards value.
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Page 12: Sample Reading
SAMPLE READING A. Clean and dry the prism and well. B. Add sample and allow to temperature equilibrate. C. Press “READ”. D. Note value on display. Use “MODE” key to switch between the four modes of measurement: 1. INDEX = Refractive index. 2. -
Page 13: Sample Temperature Effects On Readings
SAMPLE TEMPERATURE EFFECTS ON READINGS Refractive Index is a physical property of a material. It changes with concentration and with temperature. As a result, samples need to be at a stable temperature when read and the reading will be different depending on the sample temperature. This phenomenon is true for Brix or any other unit of measure that a refractometer can be programmed to report in since these are calculated from refractive index. -
Page 14: Automatic Temperature Compensation
AUTOMATIC TEMPERATURE COMPENSATION Automatic temperature compensation corrects readings over a range of temperatures. As an example: Samples taken at 10 C – 40 C are corrected to a reference temperature reading of 20 C. Temperature correction is necessary because refractive index varies inversely with temperature, as temperature of sample rises refractive index falls and as sample temperature drops refractive index will rise. - Page 15 Controlling temperature during calibrations and when reading samples is important to accurate and reproducible readings. To avoid the errors unstable sample temperature can cause, the AR700/ AR70 has an internal peltier which can be set for any temperature from 10C below room temperature to as high as 100C.
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Page 16: Display Screen/Explanation Of Functions
DISPLAY SCREEN/EXPLANATION OF FUNCTIONS Press the “SET UP” key to access the AR7 SERIES Setup screen. Use the “RIGHT/LEFT “keys to advance through the function choices. Use the “UP/ DOWN” keys to change the default settings. AR700 Setup AR700 Setup Calibration Auto Temperature... - Page 17 INTERVAL TIMER – Default “OFF”. Set in HH:MM:SS format, this option allows the instrument to take readings at definable intervals. Once activated and defined the AR7 SERIES will continually take readings until a lock out error occurs such as a lack of sample, or the option is disabled. Interval Timer is set to “OFF”...
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Page 18: Printer Output
PRINTER OUTPUT The printer output is provided for connecting an external printer through either of two DB–9 female connectors located on the instrument’s back panel. Communication is by a 7 bit, parallel bus interface with synchronous operation. RS232 SERIAL PORT The AR7 SERIES includes two serial communications ports, DB-9 position female connectors, located on the instrument’s back panel. -
Page 19: Channel 1 - Icumsa Brix
CHANNEL 1 – ICUMSA BRIX The AR7 SERIES is preprogrammed at the factory with channel 1 to read % Sucrose or “Brix” scale per the International Commission for Uniform Methods of Sugar Analysis (ICUMSA). Temperature Corrected (TC) readings in channel 1 are valid for Sucrose only! CHANNEL 2 –... -
Page 20: Error Messages
ERROR MESSAGES MESSAGE: Refractive index of sample exceeds AR7 SERIES limits. CAUSE: Applied sample appears to have a refractive index greater than 1.60000 MESSAGE: Refractive index of sample is below AR7 SERIES limits. CAUSE: Applied sample appears to have a refractive index lower than 1.32000 MESSAGE: Refractive index of sample exceeds channel limits. -
Page 21: Care And Cleaning
CARE AND CLEANING The Reichert AR7 SERIES is a precision optical instrument. The prism surface and well should be cleaned immediately after use. The interior components are protected from dust, spills, and other damage. The stainless steel well and prism assembly is sealed with a Teflon gasket. -
Page 22: Extended Precision Calibration Oils
ACCESSORIES The Extended Precision Calibration Oils recommended are manufactured by Cargille Labs, Cedar Grove, NY 07009-1289 USA, Phone 201-239-6633. To our knowledge they are the only domestic USA source of extended precision standard calibration oils with six significant figures in index. The characteristics of these oils are: •... -
Page 23: Warranty Terms
WARRANTY TERMS Please refer to our web site www.reichert.com, Analytical Products, and select Terms and Conditions of Sale for an explaination of the warranty covering this Instrument. The warranty period for this product is two years. - Page 24 ISO-9001 Certified ©2003 Reichert, Inc. Depew NY, USA 13107000-100 Rev. F...
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