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1. MOISTURE 05 44 SOLIDS 05 44 REGAIN 5 44 5 046 4 27 TEST ID 071000A TEMP TIME 130 C MANU INITIALWT 5 266 G 5 042 ne eins 05 44 GRAMS Analyzer setup Section 5 24 5 Analyzer setup The Analyzer Setup menu is activated by pressing the Setup button The menu contains lockout weight and temperature calibration language selection beeper volume settings time and date format communication settings print criteria display contrast and brightness settings and factory reset Please review this entire section and the rest of the manual before making changes to the Analyzer To gain access to any item in the menu you can use the arrow buttons fo scroll up and down and press Enter to highlight your selection To exit the setup menu press the Display button fo return to a test or Test Menu to change the current test A description of each menu item and procedure follows 9 1 Lock out Selecting this entry then setting Lock Out to ON locks out all changes from the Test Library and Analyzer Setup You would use this function after the Analyzer has been put into operation and you do not want to change any of the test or analyzer setup parameters LOCK OUT is intended to protect against accidental menu changes ANALYZER SETUP Press the Setup button Using the arrow buttons select LOCK OUT LOCK OUT WEIGHT CAL TEMP CAL LANGUAGE BEEPER TIME DATE LOCK OUT With LOCK OUT highlighted use the arr
2. The display indicates instructions to process the sample Clear the pan Press the Tare button This sets the Moisture Analyzer to zero A new display now appears with instructions Add the sample and process as shown in the illustrations Place the specimen sample in the sample pan Operating your Moisture Analyzer Section 6 46 START STOP TEST ID 071000 B TEMP TIME 130 C AFREE INITIALWT 1 094 6 1307615 1496 MOISTURE Close fhe cover Starting the test Press the Start Stop button The Moisture Analyzer starts the drying and measurement process All of the settings made in the Test Menu are now put into effect A running real time display illustrates the drying process which includes the test ID set temperature type of switch off initial weight current tem perature in the chamber actual elapsed time of the test and moisture content Interrupting the test manual switchoff only During the measurement process the test can be interrupted for a very short period of time if a sample has to be stirred for example To do this simply lift the cover stir the sample and close the cover The test will resume In the PRINT MODE the time the cover is open will be printed Remember use caution as components are hot Stopping the test Press the Start Stop button The Moisture Analyzer stops the drying and measurement process Removing the sample When the test measurement is c
3. DISPLAY DISPLAY ADJUST CONTRAST 60 BRIGHT 10 EXIT WITHOUT SAVING DISPLAY ADJUST CONTRAST 60 BRIGHT EXIT WITHOUT SAVING DISPLAY ADJUST CONTRAST 60 BRIGHT 10 EXIT WITHOUT SAVING Press the Setup button Using the down arrow button scroll to DISPLAY Press the Enter button Adjusting contrast Using the up down arrow buttons adjust the screen contrast to the desired level The numeric value O to 100 is for reference only Press the right arrow button to advance to BRIGHT Default 40 Adjusting brightness Using the up down arrow buttons adjust the screen brightness to the desired level The numeric value O to 10 is for reference only Press the Enter button Default 10 Exit without saving If you do not wish to save settings Use the right arrow button and scroll to EXIT WITHOUT SAVING and press the Enter button The display returns to ANALYZER SETUP Section 5 Analyzer setup 33 5 10 Factory reset This menu permits resetting the Moisture Analyzer to factory settings All data accumulated in the library will not be lost if the reset is set ON The table below indicates the factory settings To reset the Moisture Analyzer proceed as follows ANALYZER SETUP Factory reset BEEPER j TIME DATE Press the Setup button Using the down arrow button scroll to FACT RS232 RESET and press Enter PRINT DISPLAY FACT RESET FACTORY RESET Using the up down arrow buttons select N
4. Honey Melted in a closed vessel at 60 C Dried between 2 glass fiber pads No visible coloration due to decomposition Water soluble coffee Powder in a mortar Drying profile not asymptotic Different moisture values at different drying temperatures flavoring materials Caffeine sublimes above 178 C Values comparable with reference method obtained at a drying temperature of 103 C No visible coloration due to decomposition Tobacco Milled in a grinder Drying profile not asymptotic flavoring materials volatile hence select rapid drying for short measurement time switch off criterion 3 Always use the same amount of sample Clay body powder Direct weighing in Gypsum moist Mix well direct weighing in Step drying program 4 min 50 C 200 C Timed switch off criterion 10 min Surface water after 4 min Total moisture after 10 min Dispersion Weighing in using a syringe Dried on glass fiber filter No visible coloration due to decomposition Solid wood Direct weighing in 2 cm 3 cm 1 cm drying profile not asymptotic Sample very inhomogeneous 110 C 12 396 Switch off criterion 3 130 C 13 5 Switch off criterion 3 180 C 14 396 Switch off criterion 3 latex Shake well Weighing in using a syringe Dried between 2 glass fiber pads Slight odor of burnt styrene but asymptotic drying profile Comparable results obtained at a drying temperature of 150C but lengthy measurement
5. NOTE If the fuse is good and power is available at the outlet the cord or instrument may be defective Try a new cord If this does not work the instrument should be sent back for servicing The use of a fuse of a different type or with a different value as well as bridging or shunting the fuse is not allowed and can possibly cause a hazard to your safety and lead to instrument damage Care and maintenance Section 10 64 10 3 Troubleshooting Problem Display remains dark after switching ON Probable causes No line voltage Power cable not connected Power line fuse blown Instrument faulty Problem The measurement takes too long Probable cause You have selected an unsuitable switch off criterion Try experimentation to arrive at a suitable switch off criterion Problem The instrument does not heat following the start up Probable cause The dryer is overheated and the thermal overload protection has responded For safe operation the instrument is equipped with a duplicate overheating protection The dryer unit has a thermal overload protection bimetallic sensor which switches off the heating element In such a case contact your OHAUS dealer Problem The measurements are not repeatable Probable causes The samples are not homogeneous i e they have different compositions The more inhomogeneous a sample the larger the amount of sample needed to obtain a repeatable result
6. You have selected a drying time that is too short Extend the drying time or select a suitable switch off criterion Weight loss per unit of time The sample does not come completely dry e g owing to skin formation Dry the sample on quartz sand You have selected a temperature that is too high and the sample has oxidized Lower the drying temperature The sample boils and the splashed drops continuously change the weight Lower the drying temperature Insufficient heating power as the protective glass is dirty Clean the protective glass The temperature sensor is contaminated or faulty Clean the temperature sensor The support on which the instrument is standing is not stable Use a stable support The surroundings are very unstable vibrations etc Section 10 Care and maintenance 65 10 4 Error detection The Moisture Analyzer utilizes an audio tone to indicate an error A normal button press or entry results in a short high pitched tone When an entry is incorrect or an improper button is pressed a low pitched tone is emitted There are no system error codes shown on the displays 10 5 Service information If the Troubleshooting section does not resolve or describe your problem you will need fo contact an authorized Ohaus Service Agent For Service assistance in the United States please call Aftermarket Ohaus Corporation toll free at 800 526 0659 An Ohaus Product Service Specialist will be
7. bration was successful TO ABORT PRESS STRT STP KEY Press the Display bution to return to display To abort press START STOP bution Analyzer setup Section 5 26 5 3 Temperature calibration You must have a temperature calibration kit to perform this procedure If the Moisture Analyzer has been re cently used allow at least 30 minutes before performing calibration ANALYZER SETUP LOCK OUT WEIGHT CAL TEMP CAL LANGUAGE BEEPER TIME DATE TEMP CAL REMOVE PAN HANDLER AND PAN SUPPORT ABORT CALIBRATION TEMP CAL 100C CURRENT TEMP C TM TO CAL POINT 15 00 MIN ADJ CAL READING C ACCEPTS NEW CA TEMP CAL 160C CURRENT TEMP 100 C TM TO CAL POINT 15 00 MIN ADJ TO CAL READING C ACCEPTS NEW CAL ABORT CALIBRATION Note The temperature calibration kit is available as optional equipment Press the Setup button Using the arrow buttons scroll to TEMP CAL Press the Enter button You are now prompted to remove the pan handler and pan support Replace the pan handler and place a tem perature calibration unit on the pan handler Note The unit will not calibrate with the pan support in place Press the Enter button to initiate the temperature calibration process Follow the screen prompts throughout the process The dryer unit is heated to a temperature of 100 C You can observe the progress on the display as the dryer temperature and count down period are displayed After 15 minute
8. Dried vegetables Fast 105 C 7 66 Wet vegetables spinach Step 7 min 200 C 1 min 150 C 105 C 82 57 Butter Step 2 min 150 C 130 C 17 1496 Processed cheese Step 7 min 180 C 150 C 43 3096 Marzipan filling Standard 105 C 8 1996 Fruit juice concentrate Step 4 min 200 C 105 C 59 1496 Pastry t Step 2 min 170 C 130 C 32 25 Whole egg with 10 salt 1 Fast 130 C 69 61 Powdered milk Fast 105 C 3 38 Potato chips Fast 95 C 0 70 Herbs and spices Fast 105 C 6 38 Honey Step 5 min 130 C 17 23 Coffee water soluble Standard 103 C 3 67 Tobacco Fast 105 C 11 9696 Construction and Plastics Clay body Standard 200 C Gypsum water of Step 4 min 105 C crystalization of gypsum Dispersions Fast 170 C Wood 2 3 1cm Fast 180 C Latex Fast 170 C Cellulose paper Fast 190 C Cosmetics Pharmaceuticals Suntan cream emulsion 105 C Acetylsalicylic acid 1 Ramp 3 min 105 C Environment ecology Sewerage sludge 3 min 130 C 105 c 96 9696 Application examples Appendix Al 68 Comments on the table Wheat flour Direct weighing in No visible coloration due to decomposition Dried vegetables Beans milled in grinder Drying profile not asymptotic hence sample weight not greater than 2 5g dried vegetables Rapid drying for relatively short measurement time After drying slight browning of dried vegetables Always use the same amount of sample Wet vegetables Chopped spinac
9. radiating heat sources 2 3 Installing the heat shield draft shield and sample pan holder Lift the cover straight up and Install the heat shield in the base of the heating chamber Install the draft shield element only one position possible on top of the heat shield Install the pan support into postion Turn the pan support until it en gages In the locked position the rear arm of the pan support points directly towards the rear of the analyzer Section 2 Installation 15 2 4 Leveling the Moisture Analyzer Exact horizontal positioning and stable installation are prerequisites for repeatable results To compensate for small irregularities or inclinations at the location the instrument can be leveled Adjust the leveling feet at the rear of the Moisture Anlyzer until the air bubble in the indicator is centered The level indicator is located under the cover towards the rear of the Moisture Analyzer E NOTE The instrument should be leveled each time its location is changed Indicator 2 5 Connecting to a power supply Check to ensure the voltage identification label on the Moisture Analyzer matches your local line voltage If this is not the case do not connect the Moisture Analyzer to the power supply contact your responsible OHAUS dealer The halogen dryer unit is designed to operate at a specific line voltage 120 V ac or 240 V ac The dryer unit is installed at the factory
10. Enter button Timed switch off With this switch off criterion selected the measurement lasts until the preset drying time has elapsed the display provides you with continu ous information on the drying time Using the arrow buttons scroll to SWITCH OFF and press the Enter button Using the arrow buttons scroll to TIMED SWITCH OFF and press the Enter button Using the arrow buttons enter the desired drying time and press the Enter button Section 6 Operating your Moisture Analyzer 39 Auto switch off The switch off criterion is based on a weighf loss per unit of fime As soon as the mean weight loss is less than a preset value during a specified time the instrument considers drying as complete and automatically discontinues the measurement process During drying the display indicates the elapsed time of the drying process the switch off criterion is inactive during the first 30 seconds The automatic switch off criterion is divided into three selectable levels A30 Less than Img loss in 30 seconds used for samples which dry very quickly Surface moisture or for relatively inaccurate fast measurements to determine a trend A60 Less than Img loss in 60 seconds used for most types of samples A90 Less than Img loss in 90 seconds used for slow drying substances trapped moisture skin formation Select the criterion for your measurements TEST PARAMETERS Using the arrow buttons scroll fo SWITCH OF
11. ISO 9001 registration This certifies that Ohaus Corporation USA has a quality system that conforms with the international standards for quality management and quality assurance ISO 9000 series Repeat audits are carried out by BVQI at intervals to check that the quality system is operated in the proper manner ISO 9001 Zertifikat f r Ohaus Corporation Die Firma Ohaus Corporation USA wurde 1994 durch das Bureau Veritas Quality International BVQI gepr ft und erhielt das ISO 9001 Zertifikat Dieses bescheinigt dass Ohaus Corporation USA ber ein Qualit tssystem verf gt welches den internationalen Normen f r Qualit tsmanagement und Qualit tssicherung ISO 9000er Reihe entspricht Anl sslich von Wiederhol Audits durch das BVQI wird periodisch berpr ft ob das Qualit tssystem zweckm ssig gehandhabt wird Certificat ISO 9000 pour Ohaus Corporation La soci t Ohaus Corporation USA a t contr l e en 1994 par Bureau Veritas Quality International BVQI et a obtenu le certificat degr ISO 9001 Celui ci atteste que Ohaus Corporation USA dispose d un syst me qualit correspondant aux normes internationales pour la gestion de la qualit et pour l assurance qualit degr ISO 9000 Des audits r guliers effectu s par la BVQI v rifient si le syst me qualit est appliqu de facon appropri e Certificado ISO 9001 para Ohaus Corporation La firma Ohaus Corporation USA ha sido inspeccionada por la Bureau Veritas Quality Intern
12. SETDATE 07 10 00 TIME FMT 12HR SET TIME 11 30 AM EXIT WITHOUT SAVING TIME DATE FORMAT MM DD YR SET DATE 1 01 00 TIMEFMT T2HR SETTIME 11 30 AM EXIT WITHOUT SAVING TIME DATE FORMAT M D YR SETDATE 06 01 00 TIME FMT Bia SETTIME 11 30 AM EXIT WITHOUT SAVING TIME DATE FORMAT M D YR SET DATE 06 01 00 TIME FORMAT 12HR SET TIME 30 AM EXIT WITHOUT SAVING TIME DATE FORMAT M D YR SET DATE 06 01 00 TIME FORMAT 12HR SETTIME 11 30 AM EXIT WITHOUT SAVING Press the Setup button Using the arrow buttons select TIME DATE Press the Enter button Format FORMAT is highlighted Select either MM DD YR or DD MM YR using the up down arrow buttons Set date Press the right arrow button the highlighted area representing either month or days can be changed using the up down arrow buttons Enter the correct date To advance to the next section of the date use the right arrow button and up down buttons to change Repeat for the year Set time format Press the right arrow button 12HR is highlighted Using the up down arrow buttons select either 12HR or 24HR Set time Press the right arrow button the hour portion of time format is highlighted Using the up down arrow buttons enter the correct hour Using the same procedure enter minutes and AM or PM Once you have completed entering time and date information press the Enter button to save The display returns to ANALYZER SE
13. Specifications Al APPENDIX APPLICATION EXAMPLES 0000 00 iri nn Overview of controls Overview of controls On Off MB45 Test Menu O 3 Display O Setup O START STOP HB We Dem Test Menu button Display button Setup button EN Start Stop button AS 4 button fog 4 button fw gt button Ww v button BEN E Enter Print button El Tare button Leveling feet a m N Function Turns ON OFF display and fan ON returns with last screen All modes When pressed selects Test Library screen When pressed will return to the current test or cycles through several display screens run mode When pressed brings up analyzer setup menu When pressed either starts or stops drying process When pressed travels up through menu options and selects alphanumeric characters When pressed travels to the left through displays When pressed travels to the right through displays When pressed travels down through menu options and selects alphanumeric characters When pressed accepts selection input select mode or sends print command during a test run mode When pressed performs a tare function Pressing during a test has no effect Used to level the Moisture Analyzer 7 Getting to know your Moisture Analyzer Section 1 8 1 Getting to know your Moisture Analyzer This section provides you with essential information on yo
14. arrow buttons select the desired data bits of 7 or 8 Default setting is 8 STOP BITS 1 HANDSHAKE NONE EXIT WITHOUT SAVING Setting stop bits ale non Press the right arrow button to advance to STOP BITS Using the up down DATA BITS 7 arrow buttons select the desired stop bits of 1 or 2 Default setting is 1 STOP BITS HANDSHAKE NONE EXIT WITHOUT SAVING Analyzer setup Section 5 30 BAUD RATE 9600 PARITY NONE DATA BITS 7 STOP BITS HANDSHAKE NONE EXIT WITHOUT SAVING BAUD RATE 9600 PARITY NONE DATA BITS 7 STOP BITS 1 HANDSHAKE NONE EXIT WITHOUT SAVING RS232 Connection Setting handshake Press the right arrow button to advance to HANDSHAKE Using the up down arrow buttons select the desired handshake of NONE X ON X OFF or RTS CTS Default setting is NONE Press Enter button to save display advances to PRINT Exit without saving Using the right arrow button advance to EXIT WITHOUT SAVING and press the Enter bution The display returns to ANALYZER SETUP Hardware On the rear of the Moisture Analyzer is a 9 pin female subminiature D connector provided for interfacing to other devices Refer to the acces sory list at the rear of this manual for a proper cable Section 9 2 illustrates the pinout connections on the RS232 connector Section 5 Analyzer setup 31 5 8 Setting print and GLP printing on or off This menu permits setting print data and GLP print
15. available to help you 10 6 Accessories Description Ohaus Part No Span Calibration Mass 20 g ASTM Class 1 Tolerance 49024 11 Security Locking Cable 470004 01 RS232 Interface Cable 9 pin serial extension PC to MB45 80500525 RS232 Interface Cable MB45 to printer 25 pin AS142 80850089 Data Printer AS142 Sample Pans 90mm diameter box 80850086 Glass Fiber Pads box 80850087 Pan re usable 90mm set of three 80850088 In use Cover 80850085 Temperature Calibration Kit 11113857 Care and maintenance Section 10 66 10 7 Specifications MODEL MB45 Capacity Readability 45g 0 001g 01 Moisture 96 dry content 96 Wt g Wt custom regain 50 C to 200 C 1 C Standard fast ramp step Timed Auto 30 60 90 seconds auto free manual Halogen 2 75 x 1 50 7x3 8 LCD 128 x 64 Pixels External calibration mass 20g 14x 7 5 x 7 35 5x 19x 17 8 90 mm diameter Yes Yes 10 C to 40 C 100V ac 127V ac or 230V ac 240V ac 9 8 4 5 14 1 6 4 Appendix Al Application examples 67 Al Application examples This appendix includes a table indicating problems specific to various substances and their possible solution The samples were selected so that representatives of many material classes are considered For the solution to your specific problem a substance similar to your sample can be selected from the list TABLE A 1 COMPILATION OF APPLICATIONS WITH THE OHAUS MOISTURE ANALYZER Wheat flour
16. measurement result Mechanical size reduction Sample division is usually accomplished by specific types of mills influenced by the sample characteristics Hard brittle samples are mainly reduced in size by pressure impact or friction action whereas soft and viscoplastic substances can be comminuted only by shearing or cutting action Whatever the operating prin ciple of a mill may be for the subsequent moisture determination there must be no loss of moisture during the milling operation If this can not be avoided it should at least be calculable The quantitative recovery of the mill chamber should also be simple and complete Section 8 How to obtain the best results 51 Use of quartz sand To ensure an optimum drying process samples should always have as large an area as possible Results of substances which form crusts e g glucose syrup or pasty substances e g butter can be considerably improved by mixing with quartz sand Sample pans with a large volume and relatively high walls are needed for this Pasty fat containing and melting substances For pasty fat containing and melting substances use of a glass fiber filter is advantageous to increase the surface area of the sample The glass fiber filter is tared together with the sample pan The liquid contained in the substance is uniformly and extensively distributed in the interstices between the fibers throughout the avail able area The same also applies to melting fats an
17. option has been turned on in the Analyzer Setup menu and an external printer is connected to the Moisture Analyzer you have the option of selecting discrete printing intervals of OFF 1 3 5 10 30 seconds or 1 2 5 minutes To select a printing interval proceed as follows TEST PARAMETERS Using the arrow buttons scroll to PRINT INT and press the Enter button DRY TEMP 125C SWITCH OFF AFREE RESULT CUSTOM CUSTOM 1 00000 TARGET WGT 1 GRAMS PRINT INT 5 SEC PRINT INTERVAL Using the arrow buttons select the desired print interval of either seconds or minutes and press the Enter button SECONDS 5 EXIT WITHOUT SAVING Operating your Moisture Analyzer Section 6 44 6 10 Saving test setup Saving test setup saves all of the test parameters you have entered for the sample undergoing measurement You have the option of saving or not saving the data When saved the test parameters are stored in the Library TEST PARAMETERS Using the arrow buttons scroll to SAVE TEST and press the Enter button SWITCH OFF AFREE RESULT CUSTOM CUSTOM 1 00000 TARGET WGT 1 GRAMS PRINTINT 5 SECOND SAVE TEST TEST 071000 B Using the arrow buttons select YES or NO and press the Enter button SAVE TO TEST LIBRARY YES LIBRARY 1 EXIT WITHOUT SAVING TEST 071000 B Using the arrow buttons select the library number and press the Enter En button If the library number has been previously assigned you can YES overwrite the data T
18. the cover TEM Starting the test Press the Start Stop button The Moisture Analyzer starts the drying and d measurement process Section 3 Making a simple measurement 19 TEST ID DEFAULT Drying and measurement TEMP TIME 100 C 10 00 INITIAL WT 0 930 G You are now able to follow the progress of the drying cycle on the dis 70 C play This first display comes up automatically when the test was started 70 C 14 04 MOISTURE Observing the test progress There are five displays available when the Moisture Analyzer is running a test The Display button on the front panel when pressed repeatedly accesses each of the five displays during the run mode of the Analyzer and cycles though each display in the order shown below The displays indicate the Test ID Temperature Time Initial Weight actual temperature elapsed time duration of the test either moisture solids grams percent regain or a graph representing the actual test progress Press the Display button repeatedly to view the progress of the sample test with different displays The test automatically stops at the end of 10 00 minutes If you want to end the test sooner press the START STOP button TEST ID DEFAULT TEST ID DEFAULT TEST ID DEFAULT TEMP TIME 100 C 10 00 TEMP TIME 100 C 10 00 TEMP TIME 100 C 10 00 INITIALWT 0 9306 INITIAL WT 0 930 G INITIAL WT 0 930 G 100 C 100 00 100 C 0 00 100 C 1000 00 MOISTU
19. the drying The first type is a timed switch off This is used primarily when the drying process does not attain a constant final value and the sample continuously loses mass over time through decomposition or the evolution of difficult to volatilize components The second type recognizes the end of drying automatically The integrated balance continuously determines the weight loss of the sample during drying If the weight loss per unit of time is less than the set level the drying is stopped and the final result is displayed Auto Switch Off The automatic switch off criterion is divided into three selectable levels A30 Less than Img loss in 30 seconds used for rapidly drying substances A60 Less than Img loss in 60 seconds used for standard samples A90 Less than Img loss in 90 seconds used for slow drying substances e g plastics Sample weight g m t Automatic Start switch off Wine level 30 60 AFree switch off criterion The Auto Free switch off criterion is based on a user defined mean weight loss per unit of time As soon as this drops below the preset value the measurement is automatically ended Manual With this switch off criterion the measurement process continues until you stop it with the STOP bution The elapsed time is shown in the display Timed switch off With this switch off criterion the measurement lasts until the preset drying time has elapsed Section 8 How to obtain the be
20. units language selection beeper volume settings time and date format communication settings and print criteria The Test menu is activated by the Test Menu button This menu permits setting up new fest parameters which includes test temperatures ID profiling timed information type of display print intervals editing and running the test A test library is also included which holds data for up to 50 tests which can be recalled and run at any time The contents of each menu are shown below Lockout Weight Calibration Temperature Calibration Language English Deutsch Espaniol Francais Italiano Beeper Low High Off Time Date Format MM DD YR DD MM YR Set Date Time format 12HR 24HR Set Time AM PM RS232 Baud Rate 1200 4800 9600 19 000 Parity L Odd Even None Data Bits 7 8 Stop Bits Lio Handshake L None XON XOFF RTS CTS Print Prin On Off GLP On Off Display Contrast Brightness Factory Reset TEST MENU Test Library Edit Test Load Test Edit Test Delete Test Load Test Edit Test Delete Test Load Test Edit Test Delete Test L Test Setup Test ID Profile Standard Fast Ramp Step Dry Temp Switch Off Timed Switch Off Manual Use Start Stop AFREE Wt loss time A90 lt IMG in 90 seconds A60 lt IMG in 60 seconds A30 lt IMG in 30 seconds Result Moisture Custom Units Grams Regain 96 Solids Custom L Factor Exponent LSD Target Wt Print Int o 1 8 5
21. 0986 9 17 MC 12 35 MC 15 28 MC 21 94 MC RR pressed Print button 24 64 MC 29 36 MC 31 94 MC 05 21 Min 9 0856 31 94 MC 15 35 Data only printout 00 00 Min 00 30 Min 01 00 Min 01 30 Min 02 00 Min 03 13 05 00 Min Min AAA IAAI III III II II I III GLP OFF Interval at 30 seconds Pressing Print will add additional lines to data O MC 9 17 MC 12 35 MC 15 28 MC 21 94 MC User pressed Print button 24 64 MC 29 36 MC 60 9 1 RS232 Command table Output Formats Data output can be initiated in one of three ways 1 By pressing Print button 2 Using the Print Interval feature 3 Sending a print command CP from a computer RS232 Commands All communication is accomplished using standard ASCII format Only the characters shown in the following table are acknowledged by the Moisture Analyzer Invalid command response ES error indicates the Analyzer has not recognized the command Commands sent to the Analyzer must be terminated with a carriage return CR or carriage return line line feed CRLF Data output by the Moisture Analyzer is always terminated with a carriage return line feed CRLF RS232 COMMAND TABLE Command Character Esc V Print S N unit 10 TIME Print Current Time Note a mark will follow if time has not been set DATE Prints Current Date Note a mark will follow if date has not been set Print elapsed time and re
22. 1 and 1 999999 called the mantissa 2 a power of 10 called the exponent 3 a least significant digit LSD Section 6 Operating your Moisture Analyzer 41 SCIENTIFIC NOTATION Number Between Moves decimal point 3 places to the left Conv 0 1 and Power Man Factor 1 999999 of 10 tissa Exp Moves decimal point 2 places to the left 123 4 1234 x 1234 x 10 Moves decimal point 1 place to the left 12 34 1234 x 1234 x 10 ries e Leaves decimal point in normal position 1 234 1234 1234 x 10 Moves decimal point 1 place to the right 1234 1234 1234 x 10 01234 1234 3234 x 10 Moves decimal point 2 places to the right 001234 1234 01 1234 x 10 Moves decimal point 3 places to the right 000123 123 j 123 x 10 TEST PARAMETERS To create a custom unit proceed as follows TEST ID Press the Test Menu button EDIT TEST is highlighted Press the Enter AL button TEST PARAMETERS screen is displayed with TEST ID highlighted SWITCH OFF RESULT CUSTOM TEST PARAMETERS Displayed result setting Sere Using the down arrow button scroll to RESULT and press the Enter DRY TEMP button SWITCH OFF RESULT CUSTOM DISPLAYED RESULT Custom Unit Using the up down arrow buttons select CUSTOM UNITS and press the Enter button The screen returns to TEST SETUP EXIT WITHOUT SAVING Operating your Moisture Analyzer Section 6 42 TEST SETUP TEST ID PROFILE DRY TEMP SWITCH OFF RESULT C
23. 10 30 Sec 1 2 5 Min Save Test The menu Section 4 22 4 2 Menu operation In this section you will learn how to work with the menus Information regarding the individual menu options and available settings can be found in the following sections Test Menu How to select the test menu Pressing the Test Menu button accesses the Test Library menu The Test Library contains up to 50 tests All tests which were previously entered can be recalled and the parameters for the recalled test when selected will TEST LIBRARY bo tecoated 01 0d How to exit the test menu without making changes oe Press the Display button Setup ANALYZER SETUP How to select the setup menu Pressing the Setup button will give you access to the Analyzer Setu WEIGHT CAL 9 P ED y P TEMP CAL menu LANGUAGE BEEPER 2 TIME DATE How to exit the setup menu without making changes Press the Display button How to select the menu options Press either the up or down arrow buttons and scroll to the desired option Each time the arrow v button is pressed the menu advances to the next option Each time the a arrow button is pressed the menu returns to the previous menu option When scrolling past the last item the screen displays the next item TEST PARAMETERS How to enter the menu option TEST ID 071000A Press the Enter butfon when the desired menu option is highlighted PROFILE TANDARD DRY TEMP 100C SWITCH OFF TIME 10M RE
24. ENSE THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS AS SET OUT IN THE INTERFERENCE CAUSING EQUIPMENT STANDARD ENTITLED DIGITAL APPARATUS ICES 003 OF THE DEPARTMENT OF COMMUNICATIONS CET APPAREIL NUMERIQUE RESPECTE LES LIMITES DE BRUITS RADIOELECTRIQUES APPLICABLES AUX APPAREILS NUMERIQUES DE CLASSE A PRESCRITES DANS LA NORME SUR LE MATERIEL BROUILLEUR APPAREILS NUMERIQUES NMB 003 EDICTEE PAR LE MINISTRE DES COMMUNICATIONS Unauthorized changes or modifications to this equipment are not permitted NOTICE This manual was prepared by George W Smidhum Technical Writer Steve Nickerson Software Engineer Neil Olesen Project Engineer Contents 4 Contents OVERVIEW OF CONTROLS S addons ce thes Ue Pans ea ee 7 1 GETTING TO KNOW YOUR MOISTURE ANALYZER ssss meme 8 1 1 Jaigers de e peer 8 1 2 Overview of the Moisture Analyzer ae kenne 8 123 What ista M istire Analyzer mars aa EN ea 8 Tabs SEN IS Ike en ep ER SAT ER ER 10 1 5 What you should know about these instructions ssssssssse een 12 2 INSTALLATION o 13 2 1 Unpacking and checking the standard equipment u a ana ala 13 2 2 Selecting The JOGOHOPE arein an im E A ada Noe dra d Gad E E E AE 14 2 3 Installing the heat shield draft shield and sample pan holder ssemmH 14 2 4 Leveling The Moisture Andersen a Na 15 2 9 C nn cting Io d powers
25. F AT LESS THAN Press the Enter button 5 MGIN E SECONDS EXIT WITHOUT SAVING 6 6 Result Displayed result offers you the choice of whether your display indicates 96 moisture 9o solids regain grams or custom unit during the measurement process TEST PARAMETERS Using the arrow buttons scroll to DISPLAY and press the Enter button TEST ID DEFAULT DRY TEMP 125C PROFILE STANDARD SWITCH OFF AFREE CUSTOM OFF Using the arrow buttons scroll to either MOISTURE 96 SOLIDS 96 TEST PARAMETERS REGAIN GRAMS or CUSTOM UNITS and press the Enter button NOTES 1 If you change the displayed result during a test the final result and the printed results will be in displayed units EXIT WITHOUT SAVING 2 When CUSTOM is selected the parameters for custom units are changed in paragraph 6 7 6 7 Custom units Custom unit allows the creation of your own custom weighing unit If permits entering a conversion factor which the Moisture Analyzer will use to convert grams to the desired unit of measure The custom unit is available under the Test Parameters menu Display settings When the Moisture Analyzer is completely set up and running a test you have the option under the Display to view Moisture 9o Solids 96 Regain Grams or Custom Unit Conversion Factor x Weight in grams Weight in custom unit Conversion factors are expressed in scientific notation and entered into the balance in three parts 1 a number between 0
26. F and press the Enter TEST ID DEFAULT button DRY TEMP 125C PROFILE STANDARD SWITCH OFF AUTO6O ULT MOISTURE CUSTOM OFF SWITCH OFF Using the arrow buttons scroll to either A30 1MG IN 30 SEC A60 1MG IN 60 SEC or A90 1MG IN 90 SEC and press the Enter button A30 lt 1MG IN 30 SEC EXIT WITHOUT SAVING Auto free switch off Auto free switch off criterion is based on a user defined mean weight loss per unit of time If none of the three switch off criteria Weight loss per unit of time is suitable for your application the Moisture Analyzer allows you to define a free switch off criterion The free switch off criterion is also based on the principle of the mean weight loss per unit of time As soon as this drops below the preset value the measurement is automatically ended TEST PARAMETERS Using the arrow buttons scroll to SWITCH OFF and press the Enter TEST ID DEFAULT button DRY TEMP 125C PROFILE STANDARD SWITCH OFF AFREE RESULT MOISTURE CUSTOM OFF SWITCH OFF Using the arrow buttons scroll to AFREE WT LOSS TIME and press the Enter button AFREE WT LOSS TIME EXIT WITHOUT SAVING Operating your Moisture Analyzer Section 6 40 AUTO FREE Using the arrow buttons scroll to MG now enter the weight loss 1 mg to SWITCH OFF AT LESS THAN 10 mg EIMG IN 60 SECONDS EXIT WITHOUT SAVING AUTO FREE Using the arrow buttons enter the time 10 seconds to 120 seconds SWITCHOF
27. HAUS offers this possibility in the manual operating mode Such applications could include Mixing of quartz sand moisture which vaporizes during the mixing of the sample is correctly taken into account in the final result Coagulation of protein by dropwise addition of alcoholic solutions This prevents skin formation during drying Added solvent is not recorded in the final result Formation of readily volatile azeotropes by addition of solvents insoluble in water e g xylene toluene Note that the addition of solvents can lead to the formation of flammable or even explosive mixtures With applications of this type you should thus work with extremely small amounts of samples and with the necessary care In cases of doubt a careful risk analysis must be performed Selection of the optimum sample weight The sample weight has an influence on both the accuracy of the measurement results and the measurement time With large amounts of samples a great deal of water must vaporize and the moisture determination takes longer To keep the measurement time as short as possible we advise you choose a low weight for your sample but not so low that attainment of the required measurement accuracy is no longer possible Accuracy of the results Measurement time high long low short 0 1g Sample weight 0 1g Sample weight Section 8 How to obtain the best results 53 Influence of the sample weight on the repeatability of
28. If you are working at temperatures above 180C we advise you to wait 2 to 3 minutes between individual measurements Operating your Moisture Analyzer Section 6 38 6 5 Selecting the switch off criterion This menu offers you different switch off criterion Switch off criterion defines when the instrument should end the drying Switch off criterion eliminates checking your watch or clock and stopping the drying manually Review the list below and select one criterion that suits your purpose TEST PARAMETERS TEST ID DEFAULT DRY TEMP 125C PROFILE STANDARD SWITCH OFF MANUAL RESULT MOISTURE CUSTOM OFF SWITCH OFF MANL USE START STOP EXIT WITHOUT SAVING TEST PARAMETERS TEST ID DEFAULT DRY TEMP 125C PROFILE STANDARD SWITCH OFF TIMED 20 00 RESULT MOISTURE CUSTOM OFF SWITCH OFF TIMED SWITCH OFF EXIT WITHOUT SAVING TIMED SWITCH OFF BIJO00MIN EXIT WITHOUT SAVING The following settings can be selected for the switch off crtierion Manual switch off Timed switch off Auto switch off weight loss per unit of time 3 settings Auto free switch off user defined mean weight loss per unit of time Manual With this switch off criterion selected the measurement process contin ues until you stop it with the Stop button Using the arrow buttons scroll to SWITCH OFF and press the Enter button Using the arrow buttons scroll to MANL USE START STOP and press the
29. MOISTURE CUSTOM OFF TEST ID Using the arrow buttons enter either a test name or identifying number and press the Enter button The display returns to TEST SETUP DEFAULT 071000 A EXIT WITHOUT SAVING Section 6 Operating your Moisture Analyzer 35 6 3 Setting the drying profile The drying profile contains four settings Standard Fast Ramp and Step Section 6 paragraph 6 4 describes each of the drying profiles Review the profile descriptions Depending upon the sample material to be analyzed select the appropriate profile and proceed as follows TEST PARAMETERS TEST ID DEFAULT PROFILE STANDARD DRY TEMP 180C SWITCH OFF AUTO 60 RESULT MOISTURE 96 CUSTOM OFF DRYING PROFILE STANDARD EXIT WITHOUT SAVING TEST PARAMETERS TEST ID DEFAULT PROFILE STANDARD DRY TEMP 180C SWITCH OFF AUTO 60 RESULT MOISTURE 96 CUSTOM OFF DRYING PROFILE FAST EXIT WITHOUT SAVING Standard profile Using the arrow buttons scroll to PROFILE and press the Enter button Using the arrow buttons scroll to STANDARD and press the Enter button Temperature profile Final Standard temperature Ambient temperature Start Time Fast profile Using the arrow buttons scroll to PROFILE and press the Enter button Using the arrow buttons scroll to FAST and press the Enter button Temperature profile Final Fast drying temperature Ambient temperature Start Time Ope
30. O or YES If you select YES RESET UNIT TO FACTORY the prompt asks ARE YOU SURE NO YES Press the Enter button SETTINGS SAVED LIBRY TEST WILL NOT BE LOST RESET Factory reset settings The following table indicates the menus and options which are factory default settings when Factory Reset is set to YES FACTORY RESET TABLE Menu Items Default Value Analyzer Setup Menu Lock Out OFF Custom Unit 1 000 0 1 Language Setting English Beeper Low Time Date MM DD YY RS232 Setting 9600 N 8 1 None Print Settings Print OFF GLP OFF Display 60 10 Factory Reset NO Operating your Moisture Analyzer Section 6 34 6 Operating your Moisture Analyzer This section contains information on the use of the Test Menu which will enable you to set the actual drying parameters such as Profile Switch Off Display Print Intervals Target Weight and the use of the library 6 1 The operating concept You have already set the Moisture Analyzer setup in Section 5 and have tried the simple moisture determination in Section 3 You are now ready to perform moisture determinations in a precise manner The test menu shown in Section 4 offers a number of setting possibilities to match the measurement process to your specific require ments For instance you can select the drying temperature type of display and many other parameters Please keep in mind the importance of preparing your sample the distribution of the sample on the w
31. Ohaus Corporation 29 Hanover Road Florham Park NJ OHAUS 07932 0900 Instruction Manual MB45 Moisture Analyzer Ohaus Corporation 29 Hanover Road Florham Park New Jersey 07932 USA Declaration of Conformity We Ohaus Corporation declare under our sole responsibility that the balance models listed below marked with CE are in conformity with the directives and standards mentioned Konformit tserk rung Wir die Ohaus Corporation erkl ren in alleiniger Verantwortung dass die untenstehenden Waagentypen gekennzeichnet mit CE mit den genannten Richtlinien und Normen bereinstimmen Declaration de conformite Nous Ohaus Corporation d clarons sous notre seule responsabilit que les types de balance ci dessous cit munis de la mention CE sont conformes aux directives et aux normes mentionn es ci apr s Declaraci n de Conformidad Nosotros Ohaus Corporation declaramos bajo responsabilidad exclusiva que los modelos de balanzas indicados a continuaci n con el distintivo CE est n conformes con las directivas y normas citadas Dichiarazione di conformit Noi Ohaus Corporation U S A dichiariamo sotto nostra unica responsabilit che i tipi di bilance specificati di seguito contrassegnati con la marcatura CE sono conformi alle direttive e norme citate Balance Type Waagentyp Type de balance Tipo de balanza Tipo di bilancia Moisture Analyzer MB45 Marked with Directive gekennzeichnet mi
32. PAN PRESS GRAMS changed If required see Section 6 to reset the test parameters TARE For this simple test the default settings are Drying temperature is set to 100 C Profile is set to standard Switch Off is set to timed 10 00 minutes Display is set to moist Print interval is set to OFF Target weight is set to 1 grams Save is set to NO Open the cover on the Moisture Analyzer Clear the pan Place the empty sample pan in the pan handler this is possible without tilting the sample pan if you insert this in the pan handler from the side directly below the round flange Place the pan handler in the sample chamber Ensure that the tongue of the pan handler fits exactly in the slot of the draft shield element The sample pan must lie flat in the pan handler Note It is advisable for you to work with the pan handler at all times The pan handler is ergonomic safe and provides protection against possible burns due to a hot sample pan Making a simple measurement Section 3 18 Place the specimen sample in the sample pan glass fiber pad Press the Tare button This sets the Moisture Analyzer to zero A new display now appears with instructions TEST ID DEFAULT Wet the specimen sample with a 0 5 to 1 gram of water TEMP TIME 100 C 10 00 NOTE Minimum sample size must reater 3 LEA a 0 um sample size must be greater than 0 5 gram spe 0 930 CLOSE GRAMS Close
33. RE SOLIDS REGAIN 8 11 0 0006 100 0096 TEST ID DEFAULT TEMP TIME 100 C 10 00 INITIAL WT 0 930 6 0 000 GRAMS TEST ID DEFAULT Congratulations TEMP TIME 100 C 10 00 INITIAL WT 1 000 G You have just performed your first measurement with your new Moisture Analyzer over 0 000 10 00 MOISTURE Making a simple measurement Section 3 20 dy Carefully remove the sample pan handler from the drying area Warning As the pan and sample may still be hot you should let these cool down before removing the pan from the pan handler To remove the sample pan from the pan handler lift the pan slightly from below and pull it sideways out of the pan handler if you no longer need the sample and pan you can simply tilt tne pan handler until the pan slides out The last display from the test remains on the screen until you press the Tare button Press the Tare button This sets the Moisture Analyzer to zero The display returns to the first test display ready to repeat the test If you want to get out of the test mode simply press any other button on the unit Continue to review the rest of this manual and become familiar with the menus 4 The menus 4 1 What are the menus Section 4 The menu 21 There are two sets of menus used in the Moisture Analyzer One is the Setup menu which is activated by the Setup button This menu permits calibration adding custom
34. SULT MOISTURE CUSTOM OFF Section 4 The menu 23 FA How to enter alpha numeric data and make selections lt gt Certain menu options can have names or numerical entries made c W When prompted to enter information use the arrow buttons as follows Press the A and v arrow buttons to scroll through numbers or alphabet and to highlight an item in a menu Press the gt arrow button to advance to the next character in the display or it can be used to highlight an item in a menu Press the arrow button to go back to the previous character in the display or if can be used to highlight an item in a menu Enter Press the Enter button to accept entry How to access various displays There are five displays available when the Moisture Analyzer is running a test and at the end of the test The Display button on the front panel when pressed repeately accesses each of the five displays during the run mode of the analyzer and cycles though each display in the order shown below The displays indicate the Test ID Temperature Time Initial Weight actual temperature elasped time duration of the test either moisture solids percent regain grams or a graph representing the actual test progress TEST ID 071000A TEST ID 071000A TEST ID 071000A TEMP TIME 130 C MANU TEMP TIME 130 C MANU TEMP TIME 130 C MANU INITIAL WT 5 266 G INITIAL WT 5 266 G INITIAL WT 5 266 G om 14 25 Lom 95 75 Lom 4 44 05 44
35. TUP if you do not want to save any changes perform the next step Exit without saving Using the right arrow button advance to EXIT WITHOUT SAVING and press the Enter button The display returns to ANALYZER SETUP Section 5 Analyzer setup 29 5 7 RS232 settings Your Moisture Analyzer is equipped with a bidirectional RS232 compatible interface for communication with printers and computers When the Moisture Analyzer is connected directly to a printer displayed data can be output at any time by simply pressing the Print button The following sections describe the hardware and software provided with the Moisture Analyzer ANALYZER SETUP Press the Setup button Using the down arrow button scroll to RS232 WEIGHT CAL Press the Enter button TEMP CAL LANGUAGE BEEPER TIME DATE RS 232 Setting baud rate BAUD RATE MET j j PARITY ERU Using the up down arrow buttons select The desired baud rates of 1200 DATA BITS 8 2400 4800 9600 or 19200 Default setting is 9600 baud STOP BITS 1 HANDSHAKE NONE EXIT WITHOUT SAVING Setting parity BAUD RATE 9600 Press the right arrow button to advance to PARITY Using the up down PARITY NONE DATA BITS 7 arrow buttons select the desired parity setting of either NONE EVEN or STOP BITS 1 A HANDSHAKE NONE ODD Default setting is NONE EXIT WITHOUT SAVING Setting data bits Serial NONE Press the right arrow button to advance to DATA BITS Using the up down DATA BITS EN
36. USTOM CUSTOM 1 00000 CUSTOM UNIT FACTOR BM 1 00000 EXPONENT 0 LSD 1 EXIT WITHOUT SAVING CUSTOM UNIT FACTOR 1 00000 EXPONENT W LSD 1 EXIT WITHOUT SAVING CUSTOM UNIT FACTOR 1 00000 EXPONENT 0 LSD EXIT WITHOUT SAVING Custom unit With CUSTOM highlighted press the Enter button Factor Using the arrow buttons enter the factor number This can be a number between 0 1 and 1 999999 For conversion factors outside of this range the exponent will be used to move the decimal point Press the right arrow button to advance to EXPONENT Exponent Using the up down arrow buttons select an exponent either 3 2 1 O 1 2 or 3 Press the right arrow button to advance to LSD LSD Using the up down arrow buttons select the least significant digit LSD of 1 2 5 10 or 100 and press the Enter button The display returns to the TEST SETUP screen Section 6 Operating your Moisture Analyzer 43 6 8 Target weight Target weight is used when previous samples have been tested and the target weight is known Target weight is a reminder to use a consistant sample size TEST PARAMETERS Using the arrow buttons scroll to TARG WGT and press the Enter button DRY TEMP 130 C SWITCH OFF AFREE RESULT CUSTOM PRINT INT OFF TARGET WEIGHT Using the arrow buttons define the target weight and press the Enter button RECOMEND SAMP WGT GRAMS EXIT WITHOUT SAVING 6 9 Print interval When the printing
37. and is matched to the particular line voltage of the country of destination Connection to a line voltage that is too high can lead to burning out the halogen heater whereas a supply voltage that is too low will prolong the drying process and the instrument may not operate properly Installation Section 2 16 Connect the power cord supplied to the three pin connector located at the rear of the Moisture Analyzer and to a power source The Moisture Analyzer becomes operational as soon as power is applied The display will remain off until the On Off button is pressed Allow the Moisture Analyzer to warm up for at least 30 minutes to enable it to adapt itself to the ambient conditions If the Moisture Analyzer has been stored in a very cold environment before installation it may require several hours for it to stabilize WARNING If the power cable supplied is not long enough use only a 3 pin exten sion cable with equipment grounding connector 2 6 Switching the Moisture Analyzer on and off Your Moisture Analyzer is on at all times when connected to a power source The display can be turned on or off TEST ID TEMP TIME TARGET WT CLEAR On Off PAN PRESS TARE DEFAULT 100C 10 00 5 GRAMS 0 000 GRAMS To switch the Moisture Analyzer on press the On Off button An internal diagnostic test is performed the display lights and the logo and product name appears followed by the initial display To s
38. and protective glass With the cover open check the protective glass and the temperature sensor for debris which could impede the operation If the glass appears dirty clean the surface facing the compartment using a commercial glass cleaner If the sensor is dirty clean using a mild cleaning agent Removing glass for cleaning If the inside of the glass is dirty open the cover and remove the four cover screws as shown Carefully lay the cover down Remove the glass holder and glass from the cover Put the glass on a flat surface and clean with a commercial glass cleaner on both sides Reassemble after cleaning Cleaning air inlet The air inlet of the fan is located at the rear of the instrument and its exterior should be cleaned from time to time to free it from any dust deposits Section 10 Care and maintenance 63 10 2 Replacing power line fuse If the instrument display fails to light after switching it on check the power outlet first If power is available and the instrument fails to operate the power fuse may be open blown Disconnect the instrument from the power supply before changing the fuse To change the fuse proceed as follows A single fuse is located at the rear of the instrument Using a screwdriver turn the fuse holder to the left counterclockwise and remove the fuse Check the condition of the fuse Replace blown fuse by those of the same type with the same rated value 5 x 20 mm T6 3H 250 V
39. ard procedures work techniques and records as required by GLP Good Laboratory Practices and SOP Standard Operating Procedure We recommend the use of the OHAUS AS 142 Printer Your Moisture Analyzer has a CE declaration of conformity and OHAUS is registered to ISO 9001 Quality Management System Getting to know your Moisture Analyzer Section 1 10 1 4 Safety is first Your Moisture Analyzer employs state of the art technology and meets the latest de mands regarding instrument safety Improper operation can endanger personnel and can cause property damage For safe and dependable operation please comply with the following instructions The Moisture Analyzer is used for determination of the moisture in samples Please use the instrument exclusively for this purpose Any other type of use can endanger personnel and damage the instrument or other property The Moisture Analyzer must not be operated in a hazardous environment and only under ambient conditions specified in these instructions The Moisture Analyzer may be operated only by trained personnel who are familiar with the properties of the samples used and with the handling of the instrument Your Moisture Analyzer is supplied with a 3 pin power cable with an equipment grounding conductor Only extension cables which meet the relevant standards and also have an equipment grounding conductor may be used Intentional disconnec tion of the equipment grounding cond
40. ational BVQI y ha obtenido el certificado ISO 9001 Esto acredita que Ohaus Corporation USA dispone de un sistema de calidad que cumple las normas internacionales para gesti n y garant a de calidad ISO serie 9000 Con ocasi n de las inspecciones de repetibilidad por parte de la BVQI se comprueba peri dicamente si el sistema de calidad se manipula de forma correcta Certificato ISO 9001 per la Ohaus Corporation II sistema di garanzia della qualit della Societ Ohaus Corporation USA certificato ISO 9001 sin dal 1994 dal Bureau Veritas Quality International BVQI e cosi fomisce la dimostrazione che il suo sistema di Garanzia Qualit soddisfa i massimi requisiti Verifiche periodiche del BVQI garantiscono che il sistema qualit opera correttamente aA am g James Ohaus President NOTE THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE PURSUANT TO PART 15 OF THE FCC RULES THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFER ENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT THIS EQUIPMENT GENERATES USES AND CAN RADIATE RADIO FREQUENCY ENERGY AND IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL MAY CAUSE HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFER ENCE AT HIS OWN EXP
41. d fat containing samples This increase in the surface area results in faster and complete vaporization of the moisture Pre drying of the glass fiber filter and storage in a desiccator is necessary only for highly precise measurement results Liquid substances Liquid substances e g dispersions offen tend to form drops on the sample pan owing to the surface tension of the liquid This prevents a rapid drying process The use of a commercial glass fiber filter shortens the drying time by a factor of 2 to 3 The glass fiber filter distributes the liquid sample over a wide area as a result of its absorbent action Pre drying of the glass fiber filfer and storage in a desiccator is necessary only for highly precise measurement results Skin forming and temperature sensitive substances The use of a glass fiber filler can be useful for temperature sensitive and skin forming substances In this case the sample to be dried is covered by the filter and thus receives a new surface This shields the surface of the sample against direct IR radiation Gentler heating of the samples is based on convection rather than on IR radiation Experience with this type of preparation has been good particularly for products containing sugar Further the shielding of the sample against direct IR radiation by covering the test substance can make a considerable contribution to improving the reproducibility with temperature sensitive samples Sugar containing substance
42. e Enter button LOAD TEST is displayed Scroll back to od AERE EDIT TEST and press the Enter button The test you have selected can 05 now be edited When completing the editing scroll down to SAVE TEST and press the Enter button TEST LIBRARY Deleting a previous test EDIT TEST Press Test Menu button TEST LIBRARY is displayed Using the arrow a u buttons scroll to the test you want to delete Press the Enter button LOAD TEST is displayed Press the up arrow button DELETE TEST is displayed press the Enter button ARE YOU SURE is highlighted using the arrow buttons select YES and press the Enter button Section 8 How to obtain the best results 49 8 How to obtain the best results Following your first practical work with the Moisture Analyzer in this section you will find important information on how to obtain optimum results You will learn what parameters influence the measurement process and how you can match the instrument optimally to your particular measurement test 8 1 Measurement principle of the Halogen Moisture Analyzer Your instrument performs measurements based on the thermogravimetric principle i e the moisture is deter mined from the weight loss of a sample dried by heating The Ohaus Moisture Analyzer comprises two instruments a precision balance and a dryer unit In contrast to other thermogravimetric methods drying oven infrared microwave the Halogen Moisture Analyzer operates with a
43. eighing pan the type of sample and the temperature range Remember the greater the number of uniform samples tested the greater the accuracy of the results Before starting your test refer to Appendix A for Application Examples There is a table which describes various sample types sample weights temperature programs and drying temperatures You will find this reference table very helpful in establishing test criteria Please review this entire section before actually making any settings to become familiar with the instrument 6 2 Entering test ID The TEST ID enables you to specify a name or date to identify the test Up to nine alphanumeric characters may be entered If an entry is not made a default of the current date followed by A is automatically made If subse quent tests are made and entries to the TEST ID are disregarded the current date is again displayed followed by B C etc TEST LIBRARY Press the Test Menu button TEST LIBRARY is displayed The test library is referred to in Complete information on how to use the library 5 is covered in this section 03 ee When starting a new test EDIT TEST is displayed Press the Enter button The screen will change to TEST PARAMETERS TEST PARAMETERS TEST ID DEFAULT is displayed when no tests have been entered other TEST ID DEFAULT wise the last test appears and can be changed to a new test Press the PROFILE STANDARD DRY TEMP 180C Enter button SWITCH OFF AUTO 60 RESULT
44. from state to state and country to country please contact Ohaus or your local Ohaus dealer for further details OHAUS Ohaus Corporation 29 Hanover Road Florham Park NJ 07932 USA Tel 973 377 9000 Fax 973 593 0359 www ohaus com With offices worldwide P N80250891 Ohaus Corporation 2000 all rights reserved
45. h Dried on glass fiber pad No visible coloration due to decomposition Butter Butter vigorously mixed in cylindrical vessel using glass rod Dried on glass fiber pad No visible coloration due to decomposition Processed cheese Cheese grated Dried between 2 glass fiber pads Melts during the drying process No visible coloration due to decomposition Marzipan filling Small pieces pressed flat between two glass fiber pads Thickness including filter 1mm Drying profile not asymptotic hence low sample weight for short measurement time Fruit juice concentrate Well shaken before weighing Dried between two glass fiber pads Slight browning of the samples Pastry Spread thinly on aluminum disk Pastry baked slightly brown after drying Well puffed up before weighing Dried on glass fiber filter No skin formation in contrast to drying without glass fiber pad No visible coloration due to decomposition Powdered milk Direct weighing in No visible coloration due to decomposition Potato chips Milled in grinder oily pulp dried on glass fiber pad Drying profile not asymptotic oil vaporizes very slowly at low tempera tures hence select low drying temperature switch off criterion 1 Always use the same amount of sample Herbs and spices Direct weighing in Drying profile not asymptotic flavoring materials volitile hence select switch off criterion 2 Always use the same amount of sample
46. halogen dryer unit This ensures fast heating of the 10 560g sample and thus guarantees rapid availability of the measurement results In addition to thermogravimetric methods chemical and electrical methods for moisture determination are also common A familiar chemical method is Karl Fischer in which the water content is determined by titration This method is particularly suitable for determination of the water content of liquids or for the detection of very small amounts of water ppm range in solid and liquid samples Regardless of the measurement method used the quality of the measurement stands or falls by the preparation of the sample and a correct choice of the important measurement parameters Sample size Type of sample Drying temperature Drying time In practice however not only the quality of the measurement results but also the speed of the measurement process is important Thanks to its drying principle with the heat generated by a halogen radiator the Halo gen Moisture Analyzer is very fast The drying speed can even be increased further through optimum settings of the instrument The optimum drying temperature and the drying time are dependent upon the nature and size of the sample and the desired accuracy of the measurement results These can be determined only by experiment How to obtain the best results Section 8 50 8 2 Sampling and sample preparation Characteristics pre
47. ing data on or off To set the printing functions proceed as follows ANALYZER SETUP Press the Setup button Using the down arrow button scroll to PRINT TEMP CAL Press the Enter button LANGUAGE BEEPER TIME DATE RS 232 PRINT Setting print on or off Using the up down arrow buttons select either ON or OFF Print ON PRINT allows data to be sent to the printer or computer Press the right arrow gr OFF button to advance to GLP EXIT WITHOUT SAVING NOTE If PRINT INT is turned in on TEST PARAMETER SETUP the printer is automatically turned on PRINT Setting GLP on or off With GLP ON or OFF highlighted use the up down arrow buttons and PRINT OFF GLP select either ON or OFF GLP ON will auto print in the GLP format from information in the Test Setup GLP OFF sends time temperature and aie weight data via RS232 at test Start the Print Int and test End Press the Enter button to save settings The display returns to ANALYZER SETUP Exit without saving If you do not wish to save settings Use the right arrow button and scroll Or to EXIT WITHOUT SAVING and press the Enter button The display returns ib di to ANALYZER SETUP EXIT WITHOUT SAVING Analyzer setup Section 5 32 5 9 Adjusting display contrast and brightness This menu permits adjusting the contrast and brightness levels on the display screen To change the levels proceed as follows ANALYZER SETUP LANGUAGE BEEPER TIME DATE RS 232 PRINT
48. ing profiles Able to set step heating levels to accommodate a variety of sample types Built in library stores up to 50 samples complete with setup parameters Built in RS232 communication interface Any of five languages English French Spanish German Italian are selectable on the display Display contains all test data during drying process A variety of accessories includes disposable pan liners calibration mass temperature calibration kit interface communication cables printer and a security device 1 3 What is a Moisture Analyzer The Ohaus Halogen Moisture Analyzer can be used to determine the moisture content of practically any sub stance The instrument operates on the thermogravimetric principle At the start of the measurement the Mois ture Analyzer determines the weight of the sample the sample is then quickly heated by the integral halogen dryer unit and moisture vaporizes During the drying operation the instrument continuously determines the weight of the sample and displays the result On completion of drying result is displayed as 96 moisture con tent solids weight or 9o regain Section 1 Getting to know your Moisture Analyzer 9 Of particular importance in practice is the rate of heating In comparison with conventional infrared heating or the drying oven method for example the halogen dryer of your instrument needs a shorter time to reach its maximum heating power It also allo
49. le temperature does not exceed the boiling temperature of the liquid cooling effect through endothermic vaporiza tion In certain cases local heating and decomposition could still occur at the sample surface 8 4 Selection of the drying program Various drying programs are available in the Halogen Moisture Analyzer There are four programs which control the temperature profile They are Standard drying program Fast drying program Ramp drying program Step drying program Standard drying Standard drying is suitable for precise determination of the moisture content of most substances For special cases or for Final time optimized measurements the selec temperature tion of a more complex drying program may be advantageous Temperature profile Standard Ambient temperature Start Time Ramp drying Ramp drying is selected if substances are not stable on exposure to the full heating power of the halogen radiator at the start In ramp drying sensitive samples are prevented from decomposition by the gentle heating Ramp drying can also be used successfully with substances which form a skin Fast drying The fast drying program is suitable for samples with a moisture content between 5 and 15 In fast drying the radiator power exceeds the set temperature value during the first minute following the start of drying This compensates the endother mic heat of vaporization and accelerates the drying proce
50. ng curve The selection of a constant drying time often provides good measurement results Keep the initial weight of the sample constant 10 20 Printing Section 9 58 9 Printing test data Printing data to an external computer or printer requires the communication parameters be set first Printing to an external printer or computer will occur each time the Print button is pressed If the Print Interval is set in the Test Menu printing can occur in a continuous fashion at specified intervals Samples of weight calibration temperature calibration and test data GLP on and GLP off are shown as follows Weight calibration printout Temperature calibration printout WEIGHT CALIBRATION 12 DATE 07 04 00 TIME 08 30 45 AM OHAUS MB45 S N 1234567 REFERENCE WT u WEIGHT 40 0006 CALIBRATION PERFORMED SIGNATURE TEMPERATURE CAL 12 DATE 07 04 00 TIME 08 30 45 AM OHAUS MB45 S N 1234567 TEMP REFERENCE ID TEMP 100C 103C TEMP 160C 161C CALIBRATION PERFORMED SIGNATURE Section 9 Printing 59 Test data printout MOISTURE DETERMINATION Switchoff mode Dry Profile Drying Temp Result Initial Weight 00 30 01 00 01 30 02 00 Min Min Min Min 03 13 Min 05 00 Min 05 21 Min Elapsed Time Final Weight Final Result 07 17 2000 GLP ON Interval at 30 seconds Pressing Print will add additional lines to data Auto 60 Standard 100C Moisture 10
51. o prevent this a screen with OK TO OVERWRITE is LIBRARY Ti displayed and you have the choice to select YES or NO EXIT WITHOUT SAVING TEST 071000 B Press the Display button to return to main display SAVE TO TEST LIBRARY YES LIBRARY 1 OK TO OVERWRITE NO EXIT WITHOUT SAVING 6 11 Running the test setup Running the test setup takes all of the test parameters you have entered for the sample undergoing measure ment and initates the test Once all of the parameters have been entered the main display automatically indi cates the test parameters and the test is ready to run TEST ID 071000 B TEMP TIME 130C AFREE TARG WGT 5 GRAMS TEST ID 071000 B TEMP TIME 130C AFREE TARG WGT 5 GRAMS ADD SAMPLE 0 000 CLOSE COVER GRAMS Section 6 Operating your Moisture Analyzer 45 Follow the instructions on the lower left side of the screen Place the empty sample pan in the pan handler this is possible without tilting the sample pan if you insert this in the pan handler from the side directly below the round flange Place the pan handler in the sample chamber Ensure that the tongue of the pan handler fits exactly in the slot of the draft shield element The sample pan must lie flat in the pan handler Note It is advisable for you to work with the pan handler at all times The pan handler is ergonomic safe and provides protection against possible burns due to a hot sample pan
52. oll to STEP and press the Enter button STEP PROFILE sTEP 1 Ec 5MIN STEP2 100C 5MIN FINAL 130 EXIT WITHOUT SAVING Section 6 Operating your Moisture Analyzer 37 For STEP 1 using the arrow buttons define the temperature and press the Enter button For STEP 1 using the arrow buttons define the time and press the Enter button Repeat the above procedure for step 2 and FINAL step and press the Enter button Temperature profile Final Step drying temperature Ambient temperature Start Time 6 4 Setting the drying temperature The drying temperature can be set from 50 C to 200 C Two of the programs under TEST PARAMETERS PROFILE Standard and Fast use this temperature setting TEST PARAMETERS TESTID DEFAULT DRY TEMP 130C SWITCH OFF AUTO 60 RESULT MOISTURE CUSTOM OFF TED C EXIT WITHOUT SAVING Using the arrow buttons scroll to DRY TEMP and press the Enter button Using the arrow buttons enter the desired drying temperature and press the Enter button Temperature limitation The following protective measures have been implemented to protect the instrument against overheating The Moisture Analyzer is equipped with an overheating protection At temperatures above 160C a time limit becomes active The higher the temperature the shorter the time until the instrument starts to lower the temperature envelope curve see adjacent illustration Note
53. ompleted you may remove the sample from the instrument by opening the cover and carefully lift tne pan handler from the chamber Section 6 Operating your Moisture Analyzer 47 6 12 Displaying data during run mode or after completion To display the various screens press the Display button repeatedly TEST ID TEMP TIME INITIAL WT TEST OVER 5 24 071000 B 130 C AFREE 1 094 G 79 89 MOISTURE 05 24 0 2206 TEST ID TEMP TIME INITIAL WT TEST OVER 5 24 79 89 071000 B 130 C AFREE 1 094 G 20 11 SOLIDS TEST ID TEMP TIME INITIAL WT TEST ID TEMP TIME INITIAL WT OVER 071000 B 130 C AFREE 1 094 G 397 27 REGAIN 071000 B 130 C AFREE 1 094 G 0 220 GRAMS 6 13 Exiting test setup and not saving changes When you want fo exit any of the test setup procedures you would press the Display button This action will ignore all entries made and bring you back to the first screen in Test Menu You can continue to do this if a number of fests have to be entered and not run at this time Using the libraryt Section 7 48 7 Using the library The library holds up to 50 tests Each test consists of a test name and various analyzer settings which may be stored recalled and edited Each time the Moisture Analyzer is set up to run a new test the name of the test and all parameters are automatically stored in the library When the 51st te
54. on sido t al a Aaa ad vx hase qu du dv dva ako p tu P push dad me sedit 38 ici se ae EH wp T m 40 CUSIQITI LTRS ees o ertet na OS tee Roe e do ente aede Me eo EA elu e a ea AN s eat 40 Target weg CE 43 PHDEIBIBEROL Nene merrier r a e tu Lo Rave o e a e tnu a a E Me cS ede 43 Saving Test SEID csse ct conta A A Hb AA o ed Hn i Ce C AS 44 RUNNING TEST sep task 3268 5a Hrn P PCIE Eee t iH s Con ot epe BR er t e idend yt n 44 Displaying data during run mode een 46 Exiting test setup and not saving changes ssssssse Hmmm 47 USING THE LIBRARY lt onion namen a Cia aaa re aaa aaeain cha TREE HORAM RA 48 HOW TO OBTAIN THE BEST RESULTS ssssssss Hem 49 Measurement principle of the Halogen Moisture Analyzer m 49 Sampling and sample preparation as an en 50 SEIECION OLIRES DVINEHIEMBerAlITe ride deren Nee 53 Selection of the drying program re a reb e Reo ie ee 54 DELS HON Oh MIS IM tiee Sio fre SHE Pci aute NED 56 Analysis of the drying profile sess n n nnn nnns 57 PRINTING TEST DATA 1 2 nee een eigenen 58 RS232 command fable a ante ee ee reihe 60 RS232 PIU DUE a ea 60 CARE AND MAINTENANGE ne ete ne tutu ac p deor ed equ i eR Re lU UR 61 Cleaning interior exterior Components a a 61 Replacing power INES En era 63 Troubleshooting za ee er ee 64 Emor dele NONE ERINNERN 65 Service infonmati ns cacao ae te einen rete ed e ep e D 65 Contents 6 10 6 Accessories 10 7
55. orm a simple measurement Section 4 explains the menu operation Section 5 explains how to set the analyzer up Section 6 covers the configuring and operation of the analyzer Section 7 explains the use of the built in library Section 8 explains how to obtain the best results Section 9 details printing operations Section 10 covers maintenance Al is an appendix with application samples The following graphic orientation aids represent certain functions notices and controls These graphic aids are not meant to be step by step operational procedures but simply a guide e This hand symbol indicates pressing a button This representation symbolizes the current display of your Moisture Analyzer This symbol indicates additional information and instructions which facilitate your handling of the Moisture Analyzer and contribute to proper and economical use This symbol indicates safety and hazard instructions which must be complied with Nonconformance with such instructions can lead to personal injuries to the user damage to the Moisture Analyzer or other tangible assets or to malfunctions Section 2 Installation 13 2 Installation In this section you will learn how you unpack and install your new Moisture Analyzer and prepare it for opera tion On completion of the steps described in this section your Moisture Analyzer is ready for operation 2 1 Unpacking and checking the standard equipment Open the package and remove the instr
56. ow buttons to select either ON or LOCK OUT WILL LIMIT OFF and press the Enter button After selection the display returns to ACCESS TO MENUS AND SAVED SETTINGS TESTS ANALYZER SETUP menu LOCK OUT OFF EXIT WITHOUT SAVING Section 5 Analyzer setup 25 5 2 Weight calibration The Moisture Analyzer can be span calibrated with an external mass of 20 grams Calibration of the Moisture Analyzer balance is not absolutely necessary for a correct moisture determination as the measurement is relative The balance determines the weight of the sample before and after drying and the moisture is calculated on the basis of the ratio between wet and dry weights Nevertheless you should calibrate the built in balance under the following conditions If this is stipulated by your quality assurance system GLP GMP ISO 9001 If you suspect the analyzer has been abused To calibrate the Analyzer proceed as follows ANALYZER SETUP Clear the pan handler a sample pan should be in place close the cover LOCK OUT on the Moisture Analyzer WEIGHT CAL TEMP CAL LANGUAGE Press the Setup button Using the arrow buttons scroll to WEIGHT CAL BEEPER TIME DATE Press the Enter button The display screen highlights the action you should take CLEAR PAN TO ABORT PRESS STRT STP KEY Place the required weight on the sample pan close the cover PLACE 206 MASS Follow the instructions on the display The display indicates if the cali
57. paration and size of the sample are all important contributing factors in increasing speed and the quality of the measurement process Sampling and the sample preparation have a great influence on the reproducibility of the measured results If is also important that the sample being investigated is a representative part of the total amount of the sample under test Reproducibility Sample distribution different always the same The final results of a moisture determination depends on a carefully thought out sample preparation The part of the sample used for analysis must always be representative of the total quantity The sample preparation includes work processes such as sampling sample division size reduction homogenization and others All of these processes should be carried out as quickly as possible and without loss or uptake of moisture As with most products the lab samples are not homogenous As a result random sampling will not lead to a representative sample The appropriate standards and directions must be consulted to determine the method of sampling as this is dependent upon the product consistency and the amount used Number of samples An increase in the number of samples always lead to an improvement in the statistical reliability of the analysis results The size depends on the homogeneity of the test material the accuracy of the test material the accu racy of the measurement method and the desired accuracy of the
58. r English TEXT LANGUAGE Deutsch Espaniol Francais or Italiano and press the Enter button ENGLISH E Note If you select English US as the dialog language the date format EXIT WITHOUT SAVING is changed and appears on all records in the American notation month day year 5 5 Audible signal level Certain processes are signalled by an audio signal e g end of drying entries error messages etc In this menu you can select whether the audio signal should be loud soft or switched off ANALYZER SETUP Press the Setup button Using the arrow buttons scroll to BEEPER LOCK OUT Press the Enter button WEIGHT CAL TEMP CAL LANGUAGE BEEPER TIME DATE BEEPER LEVEL Using the arrow buttons scroll to the desired setting of either LOW HIGH AUDIO OUTPUT LEVEL or OFF and press the Enter button The display returns to ANALYZER LOW SETUP menu EXIT WITHOUT SAVING 5 6 Time and date setting Your Moisture Analyzer has a communication output which allows printing the time and date on every record When this instrument is put into operation for the first time you should enter the current date and time These settings are retained even if you disconnect your instrument from the power supply A builf in battery will main tain all data To set the time and date proceed as follows Analyzer setup Section 5 28 ANALYZER SETUP LOCK OUT WEIGHT CAL TEMP CAL LANGUAGE BEEPER TIME DATE TIME DATE FORMAT ENDISSE
59. rating your Moisture Analyzer Section 6 36 TEST PARAMETERS TEST ID PROFILE DRY TEMP SWITCH OFF RESULT CUSTOM DRYING PROFILE DEFAULT STANDARD 180C AUTO 60 MOISTURE OFF RAMP EXIT WITHOUT SAVING RAMP PROFILE END TEMP RAMP TIME Eq 3 MIN EXIT WITHOUT SAVING RAMP PROFILE END TEMP RAMP TIME 50 C BEINN EXIT WITHOUT SAVING TEST_PARAMETERS TEST ID PROFILE DRY TEMP SWITCH OFF RESULT CUSTOM DRYING PROFILE DEFAULT STANDARD 180C AUTO 60 MOISTURE OFF STEP EXIT WITHOUT SAVING Ramp profile For this temperature program the temperature and time elapsed between the start of drying and the attainment of the final temperature is set Using the arrow buttons scroll to PROFILE and press the Enter button Using the arrow buttons scroll to RAMP and press the Enter button Using the arrow buttons scroll to END TEMP Enter the desired tempera ture using the arrow buttons and press the Enter button Using the arrow buttons scroll fo RAMP TIME Enter the desired ramp or elapsed time using the arrow buttons and press the Enter button Temperature profile Ramp drying Final temperature Ambient temperature Time Start Step profile For this temperature program you define the temperature and the hold time for each step Using the arrow buttons scroll to PROFILE and press the Enter button Using the arrow buttons scr
60. s Samples containing a large amount of sugar tend to caramelize on the surface In such cases ensure a thin layer is applied Also select a moderate temperature Sample application on the drying pan To obtain reproducible results it is essential to ensure uniform distribution of the sample on the pan An uneven distribution can result in homogeneous heat distribution in the sample As a result the sample could be incom pletely dried in the center owing to excessive piling Thick layers have an adverse effect on the escape of moisture The resulting lengthening of the measurement time promotes decomposition at the surface of the sample by prolonged heat action Film formation on the sample can prevent complete escape of the moisture With such samples ensure appli cation of a thin and uniform layer thickness How to obtain the best results Section 8 52 With readily volatile samples rapid application of the sample on the sample pan is advisable otherwise moisture can escape before the initial weight is recorded here use of the manual operating mode is appropri ate Correct sample distribution Incorrect sample distribution Correct amount Distribution Homogenously distributed Piling ay Excessive amount Treating the sample during drying Occasionally following recording of the initial weight of the sample and before the actual drying the test sub stance is subjected to further treatment The halogen Moisture Analyzer from O
61. s read the thermometer through the inspection window on the cover and enter this temperature Using the up down arrow buttons adjust the display reading to agree with the thermometer Use the left right arrow buttons to highlight ACCEPT NEW CAL then press the Enter button You have 10 minutes to make this adjustment otherwise the calibration is terminated This is a two point adjustment 100 C and 160 C The dryer unit now heats to the second temperature 160 C Adjustment of the temperature is defined by two points Proceed exactly as you did for the first tempera ture After you have set the display to agree with the thermometer highlight ACCEPT NEW CAL then press the Enter button The display returns to ANALYZER SETUP WARNING Be careful when removing the temperature calibration unit from the dryer unit as it can be very hot Allow it to cool down by open ing the cover before removing Remove the calibration unit Replace the pan support and the pan handler in their proper positions Section 5 Analyzer setup 27 5 4 Language setting For convienence the Moisture Analyzer is equipped with five languages available on all displays This proce dure permits the selection of any one language ANALYZER SETUP Press the Setup button Using the arrow buttons select LANGUAGE LOCK OUT Press the Enter button WEIGHT CAL TEMP CAL BEEPER TIME DATE LANGUAGE Using the arrow buttons scroll to the desired language of eithe
62. s chemical structure A drying temperature that is too low can unnecessarily prolong the drying time Note also that certain samples can give off different amounts of moisture at different drying temperatures This is the case with substances in which the strength of the bonds binding the moisture varies or those which tend to show signs of decomposition Minimum deviations from moisture content values of the reference method can be compensated by changing the drying temperature How to obtain the best results Section 8 54 The following procedure is suggested for selecting the temperature Estimate moisture content of the sample Determine the decomposition temperature of the sample by experiments Compare the measurement results with the reference method if one exists f an excessive amount of moisture is evolved lower the drying temperature If the experimental results are too low the drying temperature was possibly too low or the drying time too short With samples which have a high moisture content it is possible to shorten the measure Measurement time ment time by selection of the step or rapid drying program Here the greatest part of the long existing moisture is separated at an elevated temperature The drying temperature is then lowered and short kept constant until the end of drying The excessive temperature is used for rapid vapor Drying temperature ization of the moisture but the effective samp
63. ss Note that the sample must contain sufficient moisture during the first minute to cool it Step drying The step drying program has a use similar to that of fast drying The duration of the excessive temperature stage and the temperature value are freely selectable It is used primarily with samples with a moisture content greater than 15 A alternate application possibility lies in the selective determination of the moisture at different temperatures Gypsum for ex Section 8 How to obtain the best results 55 Temperature profile Ramp drying Final temperature Ambient temperature Time Start Temperature profile Final Fast drying temperature Ambient temperature Time Start Temperature profile Final Step drying temperature Ambient temperature Time Start ample releases only its surface water at 50 C whereas the water of crystallization can not be separated until 168 C With this drying program it is thus possible to determine the surface water and the water of crystalliza tion separately within the same measurement by a controlled temperature profile How to obtain the best results Section 8 56 8 5 Selection of the drying time The Halogen Moisture Analyzer offers two different types of switch off criteria A switch off criterion is understood to mean the condition which must be met for the Halogen Moisture Analyzer to switch off automatically and end
64. st is entered it can be run but will not be stored When the library capacity is exceeded and you want to store a new test you must delete a previous test Recalling a test from the library and pressing the Enter button initiates the same parameters previously set If the parameters for a given test have changed they can be changed by using the edit function To use the library function proceed as follows TEST LIBRARY Entering the library Press the Test Menu button TEST LIBRARY is displayed EDIT TEST is UL highlighted If the instrument is being used for the first time the library will 03 MARGERINE be empty The following examples indicate a library which has multiple ae SEEN tests stored Selecting a previous test EDIT TEST To select a previous test use the arrow buttons and scroll to the desired er test and press the Enter button A new screen with the name of the test is 03 MARGERINE displayed All of the parameters associated with the test selected are now Geer available to be run again You do not have to enter any new data BUTTER 01 Running d previous test Using the arrow buttons select LOAD TEST and press the Enter button The display returns to the Test Library To run the selected test press the Display button and follow instructions on the display EXIT TO LIBRARY TEST LIBRARY Editing a previous test EDIT TEST Enter the Test Library Using the arrow buttons scroll to the test you want RE to edit Press th
65. st results 57 8 6 Analysis of the drying profile In the first type the drying profile is asymptotic The amount of moisture lost assumes a constant value and no longer changes after long drying times With this drying profile repeatable determinations of the moisture content are always simple The measurement result then corresponds exactly to the constant value of the asymptote It is also correspond ingly easy to find a suitable switch off criterion Moisture content Asymptote Final value Result Suitable time Time for transfer of the result In the second type drying runs quickly at the start and then flattens out The moisture content never assumes a constant value The causes of such a drying profile can be as follows The sample exhibits thermal decomposition Moisture content the decomposition products vaporize and the sample continuously loses weight Fats oils plasticizers or other volatile components can lead to superimposed profiles owing to Result their slower vaporization than water The Asymptote difficult to volatilize components lead to a slow continuous decrease in weight Possible time Time Measurement results of such a drying profile for transfer can be optimized of the result Lowering the temperature can slow down the decomposition reaction The selection of a suitable switch off criterion can allow recognition of the end of the analysis at the desired break point of the dryi
66. sult Elapsed Time Result Fixed field 9 2 RS232 Pin out The following table illustrates the pin out connections on the RS232 connector N C Data Out TXD Data In RXD Pins 4 and 6 are connected together Ground Clear to send CTS Request To Send RTS N C Section 10 Care and maintenance 61 10 Care and maintenance In this section you will learn how to keep your Moisture Analyzer in good condition and how to replace expend able parts 10 1 Cleaning interior exterior components To continue to obtain precise measurements it is advisable to clean the interior components at regular intervals Please note the following instructions for cleaning your instrument Disconnect the instrument from the power supply before cleaning Open the cover and remove the pan handler sample pan draft shield and heat shield from the instrument before cleaning Use a lint free cloth for cleaning Clean the exterior of the instrument and the drying compartment components with a mild cleaning agent Although the housing is extremely rugged and resistant to solvents never use abrasive cleaning agents or solvents Ensure that no liquid enters the interior of the instru ment DRAFTSHIELDL A Replace the components after cleaning HEAT SHIELD Care and maintenance Section 10 62 PROTECTIVE GLASS TEMPERATURE SENSOR Cleaning temperature sensor
67. t Richtlinie munis de la mention Directive con el distintivo Directiva contrassegnati con la Direttiva marcatura Standard Norm Norme Norma Norma EU 73 23 EEC Low Voltage EU 73 23 EEC Niederspannung EU 73 23 EEC Basse tension EU 73 23 EEC Baja tensi n EU 73 23 EEC Bassatensione EN61010 1 1993 A2 1995 Safety Regulations EN61010 1 1993 A2 1995 Sicherheitsbestimmungen EN61010 1 1993 A2 1995 Consignes de s curit EN61010 1 1993 A2 1995 Disposiciones sobreseguridad EN61010 1 1993 A2 1995 Prescrizioni di sicurezza EU 89 336 EEC Electromagnetic compatibility EU 89 336 EEC elektromagnetische Vertr glichkeit EU 89 336 EEC Compatibilit lectromagn tique EU 89 336 EEC Compatibilidad electromagn tica EN55011 1991 class B Emissions EN61000 3 2 EN50082 2 1995 Immunity EN61000 3 3 EN55011 1991 class B Funkst rungen EN61000 3 2 EN50082 2 1995 Immunit t EN61000 3 3 EN55011 1991 class B Emissions parasites EN61000 3 2 EN50082 2 1995 Immunit EN61000 3 3 EN55011 1991 class B Radiointerferencias EN61000 3 2 EN50082 2 1995 Inmunidad EN61000 3 3 EU 89 336 EEC Compatibilit elettromagnetica EN55011 1991 class B Radiointerferenze EN61000 3 2 EN50082 2 1995 Immunit EN61000 3 3 ISO 9001 Registration for Ohaus Corporation Ohaus Corporation USA was examined and evaluated in 1994 by the Bureau Veritas Quality International BVQI and was awarded
68. tended In cases of doubt perform a careful risk analysis Poisoning burning Substances which contain toxic or caustic components Such substances may be dried only in a fume hood Corrosion Substances which release corrosive vapors when heated e g acids In the case of such substances we advise you fo work with small amounts of samples as the vapor can condense on cooler housing parts and cause corrosion Please note that the user always takes responsibility and assumes liability for damage caused by use of the types of samples mentioned above Never make any modifications or constructional alterations to the instrument and use only original spare parts and optional equipment from Ohaus Corporation Your Moisture Analyzer is a rugged precision instrument but you should still treat it carefully it will then provide you with many years of trouble free operation Please comply with all notes and instructions in these operating instructions Keep the instructions in a safe place where they are immediately at hand if any points are unclear If you lose these instructions please contact your OHAUS dealer for an immediate replacement Getting to know your Moisture Analyzer Section 1 12 1 5 What you should know about these instructions These instructions guide you step by step through the operation of your Moisture Analyzer Section 2 provides detailed installation instructions Section 3 allows you to perf
69. the results Sample weight influences the repeatability of the Moisture Analyzer The repeatability always becomes worse with decreasing sample weight The relation between sample weight and repeatability is shown in the following table Sample weight Repeatability 0 5g 0 6 Ig 0 3 2g 40 1596 5g 0 06 10g 0 03 The preceding table is based on the assumption that the sample is ideal homogeneous and its moisture can always be separated completely and free from decomposition e g moist sand Deviations always comprise the uncertainty which depends on the sample and the repeatability of the instrument In practice measurement differences appearing within a measurement series can consequently be larger than the values of the halogen Moisture Analyzer shown in the table The two examples below show how the sample weight is determined to keep the drying time to a minimum and meet the accuracy demands of the instrument Example 1 The repeatability should be better than 0 15 The accuracy table shows that a sample weight of at least 2g is required to achieve this Example 2 Wet weight of sample 10g Mean value of the results 15 596 Repeatability from the table 0 03 Scatter of the measurement results ideal sample 15 47 15 53 8 3 Selection of the drying temperature The drying temperature exerts a controlling influence on the measurement time It must be selected so that the sample neither decomposes nor changes it
70. time necessary Cellose Cut up moist pulpy cellulose fibers finely and break up No visible coloration due to decomposition Suntan cream emulsion Direct weighing in Dried on glass fiber pad No visible coloration due to decomposition Acetylsalicylic acid product Sample powdered in a mortar No asymptotic drying profile hence gentle drying 105C use switch off criterion 3 No visible coloration due to decomposition Always use the same amount of sample Sewage sludge Shake well Dried on a glass fiber pad LIMITED WARRANTY Ohaus products are warranted against defects in materials and workmanship from the date of delivery through the duration of the warranty period During the warranty period Ohaus will repair or at its option replace any component s that proves to be defective at no charge provided that the product is returned freight prepaid to Ohaus This warranty does not apply if the product has been damaged by accident or misuse exposed to radioac tive or corrosive materials has foreign material penetrating to the inside of the product or as a result of service or modification by other than Ohaus In lieu of a properly returned warranty registration card the warranty period shall begin on the date of shipment to the authorized dealer No other express or implied warranty is given by Ohaus Corporation Ohaus Corporation shall not be liable for any consequential dam ages As warranty legislation differs
71. uctor is prohibited The Halogen Moisture Analyzer works with heat Ensure sufficient free space around the instrument to avoid heat accumulation and overheating approximately 1 m free space above the instrument Never place flammable materials on below or next to the instrument as the area around the dryer unit warms up Exercise caution when removing the sample The sample itself the sample cham ber and any sample containers may still be very hot During operation you should never open the dryer unit as the ring shaped heating element or its protective glass can reach 400 C If you have to open the dryer unit on occasion disconnect the instrument from the power supply and wait until the dryer unit has cooled down completely Section 1 Getting to know your Moisture Analyzer 11 Certain samples require special care With certain types of samples there is a possibility of danger to personnel or damage to property through Fire or explosion Flammable or explosive substances Substances containing solvents Substances which release flammable or explosive vapors when heated With such samples work at a drying temperature that is low enough to prevent the formation of flames or an explosion and wear protective goggles Should there be any uncertainty regarding the flammability of a sample always work with a small sample maximum 1 gram In such cases never leave the instrument unat
72. ument and the accessories Check the completeness of the delivery The following accessories are part of the standard equipment of your new Moisture Analyzer 1 Box Aluminum sample pans 1 Pan support Pan handler Specimen sample circular absorbent cellulose disk Draft shield element Heat shield Power cable l3 I Set of operating instructions Warranty card Remove packing material from the instrument Check the instrument for transport damage Immediately inform your Ohaus dealer if you have complaints or parts are missing Store all parts of the packaging This packaging guarantees the best possible protection for the transport of your instrument Installation Section 2 14 2 2 Selecting the location The Moisture Analyzer should always be used in an environment which is free from excessive air currents corro sives vibration and temperature or humidity extremes These factors will affect displayed weight readings SK D DO NOT install the Moisture Analyzer e Next to open windows or doors causing drafts or rapid temperature changes e Near air conditioning or heat vents e Near vibrating rotating or reciprocating equipment e Near magnetic fields or equipment that generate magnetic fields e On an unlevel work surface e n confined areas allow sufficient space around the instrument for ease of operation and keep away from
73. upply uses 15 26 Switching the Moisture Analyzer on or off 2 5 n 1p c eve ad au 16 3 MAKING A SIMPLE MEASUREMENT ssseeem mener 17 4 THE MENUS i corio oot Ove fla wit aeg 21 4 MVM eee TROU ce cbe athe ade see if A i rato ee f uut eet i iter Ar 2 4 2 Menu operation cere 22 5 ANALYZER SETUP an ten er unten 24 9 1 Boi i00 PROPER ETE CR TENEO a ORE REDIT DET RR EORR ID PERO E RN PER 24 3 2 VOIOIT dl IDIOT es 25 Heo Temperdture caliDFOflOns s eese a ae a helt te 26 5 4 MOM GWAC S setingin ato deo n oe este 27 5 5 Budible signal level esso et tbt RUE RERO a eta tura Ra N va eeu ista aot 27 50 megndgdle Sellllid un ns a EEO NAET d d edd uo ba 27 5 7 RS232 Seting cn 29 5 8 Selling print and GLP printing on Doro area sah 31 5 9 Adjusting display contrast and brightness a a al ultr tnc d doas fa eros 32 5 10 Factory fest ana a ehe 33 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 6 11 6 12 6 13 8 1 8 2 8 3 8 4 8 5 8 6 9 1 9 2 10 10 1 10 2 10 3 10 4 10 5 Contents 5 OPERATING YOUR MOISTURE ANALYZER sssssss eR 34 The operating Concept dc te ici ee ete eer eere ence C ta tanta len e Le o ERU RET SOLO RE TERR 34 Entering TST pessum rr PR 34 Setting WIS AR MNO Proe uisa aoa cud ooa ducus Prou a c lady da Pott tud Dowd utn Fa dut tto Ud dale ui tus alas 35 Setting the drying Termpelafifezua sos eod ui vade Me dor exe ated p ae 37 Selecting the switch off criteri
74. ur MB45 Moisture Analyzer Please read through the section carefully even if you have previous experience with OHAUS Moisture Analyzers and be sure to familiarize yourself with the safety notes 1 1 Introduction Thank you for deciding to purchase a MB45 Halogen Moisture Analyzer from Ohaus Behind your instrument stands OHAUS a leading manufacturer of precision Moisture Analyzers Balances Scales and Indicators An Aftermarket Department with trained instrument technicians is dedicated to provide you with the fastest service possible in the event your instrument requires servicing OHAUS also has a Customer Service Department to answer any inquiries regarding applications and accessories To ensure you make full use of the possibilities offered by your Moisture AnalyZer please read the manual completely before installation and operation 1 2 Overview of the Moisture Analyzer The Moisture Analyzer offers a high level of operating convenience and useful functions to make accurate measurements The Moisture Analyzer has the following features Up to twice as fast as IR Moisture Analyzers Fully programmable with front panel controls Extremely rugged and chemically resistant construction Ergonomic operating controls and a large easily readable display Easy to follow menus for simplified operation Built in functions for manual automatic timing printing intervals and custom units Built in selectable dry
75. witch the Moisture Analyzer off press the On Off button Affer the analyzer has been switched off it is in the standby mode If you wish to perform a test press the On Off button again As your Moisture Analyzer needs no warm up time when in the standby mode and is immediately ready for testing samples we advise you to switch the display off by use of the On Off button and not to disconnect it from the power supply This also ensures that the Moisture Analyzer is always in thermal equilibrium Section 3 Making a simple measurement 17 3 Making a simple measurement With your Moisture Analyzer powered on you are ready to operate for the first time and perform a simple mea surement For this simple test you will enter the Test Menu and enable the test By doing this test you will become familiar with the instrument and the various displays Included with your Moisture Analyzer is a specimen sample for your first measurement This sample is an absorbent glass fiber pad During your first measurement the instrument operates with the factory settings If the display is not visible and the unit is plugged into a power source press the On Off button On Off The display indicates the parameters for DEFAULT settings Follow the instructions on the lower left side of the display TEST ID DEFAULT TEMP TIME 100 C 10 00 TARGET WT 1 GRAMS NOTE If the unit has been operated the default test settings may have CLEAR 0 000
76. ws the use of high temperatures an additional factor in shortening the drying time Response times for the control of production are shorter resulting in increased productivity All parameters of a measurement drying temperature drying time etc can be pre selected The Moisture Analyzer offers many other possibilities A few of these are listed here The integrated database for drying procedures stores the settings for your samples The drying characteristics can be matched to the type of sample You can choose between various types of result displays at any time Your settings and measurement results can be recorded and stored Built in battery backup stores valuable data during a power failure Even though the Moisture Analyzer contains many functions operation remains simple The three button controls on the front panel Test Menu Display and Setup allows entry into a variety of displays which includes a test library where previous samples are recorded along with the test parameters so that a similar sample can be run without the need to enter all new data There are additional displays which indicate the test ID number selected temperature actual temperature time initial weight and moisture content in percent solids in percent grams or custom unit regain and a graphical display which illustrates the time and percentage Your Moisture Analyzer conforms with all common standards and directives If supports stand

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User Manual - Affordable Scales &amp; Balances

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User Manual - Affordable Scales & Balances