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Section 10 - Care and maintenance

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.

Replace the components after cleaning.

SAMPLE PAN

PAN HANDLER

PAN SUPPORT

DRAFT SHIELD

HEAT SHIELD

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Summary of Contents for MB45

Page 1: ... 29 Hanover Road Florham Park NJ 07932 0900 Instruction Manual MB45 Moisture Analyzer On Off Test Menu Display Setup Enter Print TARE START STOP MB45 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 2: ... EEC EN55011 1991 class B Radiointerferencias EN61000 3 2 Compatibilidad electromagnética EN50082 2 1995 Inmunidad EN61000 3 3 EU 89 336 EEC EN55011 1991 class B Radiointerferenze EN61000 3 2 Compatibilità elettromagnetica EN50082 2 1995 Immunità EN61000 3 3 ISO9001RegistrationforOhausCorporation OhausCorporation USA wasexaminedandevaluatedin1994bytheBureauVeritasQualityInternational BVQI and was ...

Page 3: ...WILL BE REQUIRED TO CORRECT THE INTERFER ENCE AT HIS OWN EXPENSE 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 N...

Page 4: ... pan holder 14 2 4 Leveling the Moisture Analyzer 15 2 5 Connecting to a power supply 15 2 6 Switching the Moisture Analyzer on or off 16 3 MAKING A SIMPLE MEASUREMENT 17 4 THE MENUs 21 4 1 What are the menus 21 4 2 Menu operation 22 5 ANALYZER SETUP 24 5 1 Lockout 24 5 2 Weight calibration 25 5 3 Temperature calibration 26 5 4 Language setting 27 5 5 Audible signal level 27 5 6 Time and date sett...

Page 5: ...changes 47 7 USING THE LIBRARY 48 8 HOW TO OBTAIN THE BEST RESULTS 49 8 1 Measurement principle of the Halogen Moisture Analyzer 49 8 2 Sampling and sample preparation 50 8 3 Selection of the drying temperature 53 8 4 Selection of the drying program 54 8 5 Selection of the drying time 56 8 6 Analysis of the drying profile 57 9 PRINTING TEST DATA 58 9 1 RS232 command table 60 9 2 RS232 Pin out 60 1...

Page 6: ...6 Contents 10 6 Accessories 65 10 7 Specifications 66 A1 APPENDIX APPLICATION EXAMPLES 67 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 7: ...rts or stops drying process 6 button When pressed travels up through menu options and selects alphanumeric characters 7 button When pressed travels to the left through displays 8 button When pressed travels to the right through displays 9 button When pressed travels down through menu options and selects alphanumeric characters 110 Enter Print button When pressed accepts selection input select mode...

Page 8: ...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 drying profiles Able to set step heating levels to accommodate a variety of sample types Bui...

Page 9: ...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 wit...

Page 10: ... 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 conductor is prohibited 1 4 Safety is first The Halogen Moisture Analyzer works with heat Ensure sufficient free space around the instrument to av...

Page 11: ...od Corrosion Substances which release corrosive vapors when heated e g acids In the case of such substances we advise you to 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 ...

Page 12: ... maintenance A1 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 This hand symbol indicates pressing a button This representation symbolizes the current display of your Moisture Analyzer This symbol indicates safety and hazard ...

Page 13: ...g accessories are part of the standard equipment of your new Moisture Analyzer 1 Box Aluminum sample pans 1 Pan support 1 Pan handler 1 Specimen sample circular absorbent cellulose disk 1 Draft shield element 1 Heat shield 1 Power cable 1 Set of operating instructions 1 Warranty card Remove packing material from the instrument Check the instrument for transport damage Immediately inform your Ohaus...

Page 14: ...e around the instrument for ease of operation and keep away from radiating heat sources On Of f Test Menu Displa y Setup Enter Print TARE STAR T STO P MB 45 On Of f Test Menu Displa y Setup Enter Print TARE STAR T STO P MB 45 On Of f Test Menu Displa y Setup Enter Print TARE STAR T STO P MB 45 Lift the cover straight up and Install the heat shield in the base of the heating chamber Install the dra...

Page 15: ...gh 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 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 ...

Page 16: ...s on at all times when connected to a power source The display can be turned on or off 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 switch the Moisture Analyzer off press the On Off button After the analyzer has been switched off it is in the standby mo...

Page 17: ...anged If required see Section 6 to reset the test parameters On Off TEST ID DEFAULT TEMP TIME 100 C 10 00 TARGET WT 1 GRAMS 0 000 GRAMS CLEAR PAN PRESS 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 s...

Page 18: ... the specimen sample with a 0 5 to 1 gram of water NOTE Minimum sample size must be greater than 0 5 gram Close the cover START STOP Starting the test Press the Start Stop button The Moisture Analyzer starts the drying and measurement process Press the Tare button This sets the Moisture Analyzer to zero A new display now appears with instructions TARE All manuals and user guides at all guides com ...

Page 19: ... 00 minutes If you want to end the test sooner press the START STOP button TEST ID DEFAULT TEMP TIME 100 C 10 00 INITIAL WT 0 930 G 70 C 0 20 4 04 MOISTURE Drying and measurement You are now able to follow the progress of the drying cycle on the dis play This first display comes up automatically when the test was started TEST ID DEFAULT TEMP TIME 100 C 10 00 INITIAL WT 0 930 G TEST ID DEFAULT TEMP...

Page 20: ...n handler if you no longer need the sample and pan you can simply tilt the pan handler until the pan slides out TARE 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 bu...

Page 21: ... Library Edit Test 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 1MG in 90 seconds A60 1MG in 60 seconds A30 1MG in 30 seconds Result Moisture Custom Units Grams Regain Solids Custom Factor Exponent LSD Target Wt Print Int Off 1 3 5 10 30 Sec 1 2 5 Min Save Test SETUP Lockout Weight Calibration Temperature Calib...

Page 22: ...button will give you access to the Analyzer Setup menu How to exit the setup menu without making changes Press the Display button Setup ANALYZER SETUP LOCK OUT WEIGHT CAL TEMP CAL LANGUAGE BEEPER TIME DATE EDIT TEST 01 02 03 04 05 How to select the menu options Press either the up or down arrow buttons and scroll to the desired option Each time the arrow button is pressed the menu advances to the ...

Page 23: ... 266 G TEST ID 071000A TEMP TIME 130 C MANU INITIAL WT 5 266 G TEST ID 071000A TEMP TIME 130 C MANU INITIAL WT 5 266 G TEST OVER 05 44 05 44 05 44 05 44 4 25 MOISTURE 95 75 SOLIDS 5 042 GRAMS 4 44 REGAIN 5 44 5 04G 4 27 How to enter alpha numeric data and make selections Certain menu options can have names or numerical entries made When prompted to enter information use the arrow buttons as follow...

Page 24: ...nge the current test A description of each menu item and procedure follows 5 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...

Page 25: ...1 If you suspect the analyzer has been abused To calibrate the Analyzer proceed as follows Press the Setup button Using the arrow buttons scroll to WEIGHT CAL Press the Enter button ANALYZER SETUP LOCK OUT WEIGHT CAL TEMP CAL LANGUAGE BEEPER TIME DATE WEIGHT CAL CLEAR PAN TO ABORT PRESS STRT STP KEY The display screen highlights the action you should take Clear the pan handler a sample pan should ...

Page 26: ...nd 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 TEMP CAL 160C This is a two point adjustment 100 C and 160 C The dryer unit now heats to the second temperature ...

Page 27: ...o 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 BEEPER LEVEL AUDIO OUTPUT LEVEL LOW Press the Setup button Using the arrow buttons scroll to BEEPER Press the Enter button Using the arrow buttons scroll to the desired setting of either LOW HIGH or OFF and press the Enter button The display ...

Page 28: ...t time format Press the right arrow button 12HR is highlighted Using the up down arrow buttons select either 12HR or 24HR TIME DATE FORMAT M D YR SET DATE 06 01 00 TIME FORMAT 12HR SET TIME 11 30 AM EXIT WITHOUT SAVING 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 an...

Page 29: ... advance to PARITY Using the up down arrow buttons select the desired parity setting of either NONE EVEN or ODD Default setting is NONE WEIGHT CAL TEMP CAL LANGUAGE BEEPER TIME DATE RS 232 BAUD RATE 9600 PARITY NONE DATA BITS 8 STOP BITS 1 HANDSHAKE NONE EXIT WITHOUT SAVING RS232 Setting data bits Press the right arrow button to advance to DATA BITS Using the up down arrow buttons select the desir...

Page 30: ...for a proper cable Section 9 2 illustrates the pinout connections on the RS232 connector RS232 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 BAUD RATE 9600 PARITY NONE DATA BITS 7 STOP BITS 1 HANDSHAKE NONE ...

Page 31: ...T Setting GLP on or off With GLP ON or OFF highlighted use the up down arrow buttons and 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 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 PRINT TEMP CAL LANGUAGE BEEPER TIME...

Page 32: ...ess the right arrow button to advance to BRIGHT Default 40 LANGUAGE BEEPER TIME DATE RS 232 PRINT DISPLAY CONTRAST 60 BRIGHT 10 EXIT WITHOUT SAVING DISPLAY ADJUST Adjusting brightness Using the up down arrow buttons adjust the screen brightness to the desired level The numeric value 0 to 10 is for reference only Press the Enter button Default 10 CONTRAST 60 BRIGHT 10 EXIT WITHOUT SAVING Exit witho...

Page 33: ... select NO or YES If you select YES the prompt asks ARE YOU SURE NO YES Press the Enter button 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 S...

Page 34: ...ying 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...

Page 35: ... to STANDARD and press the Enter button Temperature profile Final temperature Ambient temperature Standard Time Start EXIT WITHOUT SAVING TEST PARAMETERS TEST ID DEFAULT PROFILE STANDARD DRY TEMP 180C SWITCH OFF AUTO 60 RESULT MOISTURE CUSTOM OFF STANDARD Fast profile Using the arrow buttons scroll to PROFILE and press the Enter button DRYING PROFILE EXIT WITHOUT SAVING Using the arrow buttons scr...

Page 36: ...psed time using the arrow buttons and press the Enter button RAMP PROFILE EXIT WITHOUT SAVING 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 DRYING PROFILE Using the arrow buttons scroll to STEP and press the Enter button EXIT WITHOUT SAVING TEST PARAMETERS TEST ID DEFAULT PRO...

Page 37: ...horter the time until the instrument starts to lower the temperature envelope curve see adjacent illustration Note If you are working at temperatures above 180C we advise you to wait 2 to 3 minutes between individual measurements C 160 t min Start 200 10 50 EXIT WITHOUT SAVING 6 4 Setting the drying temperature The drying temperature can be set from 50 C to 200 C Two of the programs under TEST PAR...

Page 38: ...buttons scroll to SWITCH OFF and press the Enter button SWITCH OFF Using the arrow buttons scroll to MANL USE START STOP and press the Enter button SWITCH OFF 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...

Page 39: ...rrow buttons scroll to SWITCH OFF and press the Enter button 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 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 applicatio...

Page 40: ...or custom units are changed in paragraph 6 7 EXIT WITHOUT SAVING EXIT WITHOUT SAVING EXIT WITHOUT SAVING SWITCH OFF AT LESS THAN 5 MG IN 60 SECONDS TEST ID DEFAULT DRY TEMP 125C PROFILE STANDARD SWITCH OFF AFREE RESULT MOISTURE CUSTOM OFF MOISTURE 6 7 Custom units Custom unit allows the creation of your own custom weighing unit It permits entering a conversion factor which the Moisture Analyzer wi...

Page 41: ...10 2 000123 123 x 001 123 x 10 3 EXPONENTS 3 Moves decimal point 3 places to the left 2 Moves decimal point 2 places to the left 1 Moves decimal point 1 place to the left 0 Leaves decimal point in normal position 1 Moves decimal point 1 place to the right 2 Moves decimal point 2 places to the right 3 Moves decimal point 3 places to the right Custom unit Using the down arrow button scroll to RESULT...

Page 42: ...XPONENT 0 LSD 1 EXIT WITHOUT SAVING FACTOR 1 0 0 0 0 0 EXPONENT 0 LSD 1 EXIT WITHOUT SAVING CUSTOM UNIT 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 FACTOR 1 0 0 0 0 0 EXPONENT 0 LSD 1 EXIT WITHO...

Page 43: ...al of either seconds or minutes and press the Enter button EXIT WITHOUT SAVING TEST PARAMETERS Using the arrow buttons scroll to TARG WGT and press the Enter button 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 TARGET WEIGHT Using the arrow buttons define the target weight an...

Page 44: ...ata To prevent this a screen with OK TO OVERWRITE is displayed and you have the choice to select YES or NO 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...

Page 45: ...aft 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 TARE 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 ill...

Page 46: ...oisture content Removing the sample When the test measurement is completed you may remove the sample from the instrument by opening the cover and carefully lift the pan handler from the chamber Stopping the test Press the Start Stop button The Moisture Analyzer stops the drying and measurement process Interrupting the test manual switchoff only During the measurement process the test can be interr...

Page 47: ...t run at this time TEST ID 071000 B TEMP TIME 130 C AFREE INITIAL WT 1 094 G TEST ID 071000 B TEMP TIME 130 C AFREE INITIAL WT 1 094 G TEST ID 071000 B TEMP TIME 130 C AFREE INITIAL WT 1 094 G TEST ID 071000 B TEMP TIME 130 C AFREE INITIAL WT 1 094 G TEST OVER 5 24 5 24 5 24 5 24 79 89 MOISTURE 20 11 SOLIDS 0 220 GRAMS 397 27 REGAIN 6 12 Displaying data during run mode or after completion To displ...

Page 48: ... of the test is displayed All of the parameters associated with the test selected are now available to be run again You do not have to enter any new data BUTTER 01 Running a 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 Editing a previ...

Page 49: ... 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 th...

Page 50: ...s 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 ...

Page 51: ... in a desiccator is necessary only for highly precise measurement results Skin forming and temperature sensitive substances The use of a glass fiber filter 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 ...

Page 52: ...latile 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 ...

Page 53: ... 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 5 Repeatability from the table 0 03 Scatter of the measurement results ideal sample 15 47 15 53...

Page 54: ...end of drying The excessive temperature is used for rapid vapor ization of the moisture but the effective sample 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 Ha...

Page 55: ...rying 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 ample releases only its surface...

Page 56: ...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 1mg loss in 30 seconds used for rapidly drying substances A60 Less than 1mg loss in 60 seconds used for standard samples A90 Less than 1mg loss in 90 seconds used for slow drying substances e g plastics Sample weight g Time Automatic...

Page 57: ...s of such a drying profile can be as follows The sample exhibits thermal decomposition the decomposition products vaporize and the sample continuously loses weight Fats oils plasticizers or other volatile components can lead to superimposed profiles owing to their slower vaporization than water The difficult to volatilize components lead to a slow continuous decrease in weight Measurement results ...

Page 58: ...specified intervals Samples of weight calibration temperature calibration and test data GLP on and GLP off are shown as follows WEIGHT CALIBRATION 12 DATE 07 04 00 TIME 08 30 45 AM OHAUS MB45 S N 1234567 REFERENCE WT WEIGHT 40 000G CALIBRATION PERFORMED SIGNATURE END Weight calibration printout TEMPERATURE CAL 12 DATE 07 04 00 TIME 08 30 45 AM OHAUS MB45 S N 1234567 TEMP REFERENCE ID TEMP 100C 103...

Page 59: ...5 21 Min Final Weight 9 085G Final Result 31 94 MC 07 17 2000 15 35 END 00 00 Min 0 MC 00 30 Min 9 17 MC 01 00 Min 12 35 MC 01 30 Min 15 28 MC 02 00 Min 21 94 MC 03 13 Min 24 64 MC 05 00 Min 29 36 MC GLP ON Interval at 30 seconds Pressing Print will add additional lines to data Test data printout GLP OFF Interval at 30 seconds Pressing Print will add additional lines to data User pressed Print but...

Page 60: ...ne line feed CRLF Data output by the Moisture Analyzer is always terminated with a carriage return line feed CRLF 1 N C 2 Data Out TXD 3 Data In RXD 4 6 Pins 4 and 6 are connected together 5 Ground 7 Clear to send CTS 8 Request To Send RTS 9 N C RS232 COMMAND TABLE V Print SR version Esc V Print S N unit I0 Print current mode T I M E Print Current Time Note a mark will follow if time has not been ...

Page 61: ...rom 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 sol...

Page 62: ...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 locate...

Page 63: ...river 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 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 ...

Page 64: ...t 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 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...

Page 65: ...vice 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 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 Inter...

Page 66: ...to free manual Heat Source Halogen Display in cm 2 75 x 1 50 7 x 3 8 Display Type LCD 128 x 64 Pixels Calibration External calibration mass 20g Dimensions DxWxH in cm 14 x 7 5 x 7 35 5 x 19 x 17 8 Pan Size 90 mm diameter Adjustable Feet and Level Yes RS232 Interface Yes Operating Temperature Range 10 C to 40 C Power Requirements 100V ac 127V ac or 230V ac 240V ac Weight lb kg 9 8 4 5 Shipping Weig...

Page 67: ...60 69 61 0 10 6 Powdered milk 5 0 Fast 105 C 60 3 38 0 11 5 5 Potato chips 9 0 Fast 95 C 30 0 70 0 07 2 Herbs and spices 5 0 Fast 105 C 30 6 38 0 11 3 Honey 0 7 Step 5 min 130 C 10 5C 60 17 23 0 21 6 Coffee water soluble 5 0 Standard 103 C 60 3 67 0 05 5 Tobacco 2 5 Fast 105 C 60 11 96 0 10 4 Construction and Plastics Clay body 10 Standard 200 C 30 2 47 0 06 1 5 Gypsum water of 5 0 Step 4 min 105 ...

Page 68: ...ff criterion 2 Always use the same amount of sample 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...

Page 69: ... 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 shal...

Page 70: ...All manuals and user guides at all guides com ...

Page 71: ...r 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 All manuals and user guides at all guides com a l l g u i d e s c o m ...

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