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User Manual - Affordable Scales & Balances

1. __ I O 7 Paper Sea Lt EN a Lock Switch Access Location O O N AA 7 A coco OG mom Rear of Balance Sealing the Balance 3 9 Printing Data Printing data to an external computer or printer requires that the communication parameters in the RS232 sub menu be set to match external device communication parameters 04 01 06 12 30 PM if GLP SET gt Time is ON Bal ID 1234567 If GLP SET gt Balance ID is ON USER ID ABCDEFGHIJ If GLP SET gt User ID is ON PROJ ID 1234567890 If GLP SET gt Proj ID is ON If GLP SET gt Name is ON lf a tare value is entered these three items are printed if selected in the definitiion string 0 0200kg G Gross ON G B or Space as determined in Readout sub menu 0 0200kg T Tare ON 0 0000kg NET Net ON Otherwise gross is printed if selected in the definition string 0 0200kg G Gross ON 6 B or space as determined in Readout sub menu 80104130 indd 40 D 11 7 2006 9 22 45 AM Ohaus Discovery 4 MAINTENANCE 4 1 Calibration EN 41 Periodically verify calibration by placing an accurate weight on the balance and if calibration is required refer to section 3 7 2 4 2 Cleaning If cleaning is required use a soft cloth dampened with water and a mild detergent Do not allow liquids to enter the balance Do not use harsh chemicals to clean the balance as the finish may be damaged 4 3 Troubleshooting
2. Installation of Balance Components 2 3 Selecting the Location Locate the balance on a firm steady surface Avoid locations with excessive air currents vibrations heat sources or rapid temperature changes 2 4 Leveling the Balance Before the balance is used the feet should be adjusted so that the scale is level with the surface This will enable accurate weighing You will see a level bubble indicator in a small round window inside the weighing compartment Level the balance by adjusting the leveling feet so the bubble is centered in the circle as shown below Balance level 80104130 indd 4 D 11 7 2006 9 22 29 AM Ohaus Discovery EN 5 2 5 Connecting Power 2 5 1 AC Adapter Connect the AC Adapter fo the wall outlet Connect the plug into the receptacle on the rear of the balance N For use with CSA Certified or equivalent approved power source which must have a limited circuit output 2 5 2 Turning Power On and Off 20 J a0 a a Else Press the On Zero button to turn power on vm oe a Bun The balance performs a segment check The balance then displays the last selected application m i o ARANA meda UELI To turn power off press and hold the Off button until OFF is displayed then release the button ore ure 2 6 Initial Calibration When the balance is first installed and when it is moved to another location it must be calibrated to ensure accurate weighing resul
3. Custom Unit Conversion Factor x Grams The LSD is the value by which the displayed weight is incremented or decremented 11 7 2006 9 22 44 AM Ohaus Discovery LSD Result 5 Adds one decimal place Display counts by 5 1 Display counts by 1 2 Display counts by 2 5 Display counts by 5 10 Display counts by 10 100 Display counts by 100 End Unit Press the Yes button to advance to the Print sub menu Press No to return to the first available unit 3 7 7 Print The Print sub menu is used to set printing parameters for an external printer or computer PRINT 1 Output When Stable On Off GLP Tare On Off Auto Print Off Cont Interval When Stable 3600 seconds Stable Load Load amp Zero Content Num Only Off all others On Header Gross Net Tare Ref Result GLP Layout Line Format Multi Single ALF Yes No Form Feed Yes No List Yes No End Print 1 Output Set When Stable to On to print only stable values Set When Stable to Off to print stable or unstable values Set GLP Tare to On to print GLP data once after a tare operation Set GLP Tare to Off fo disable this feature Auto Print When set to Continuous the displayed value is printed continuously When set to Interval the displayed value is printed at the user speci fied time interval 1 to 3600 seconds If set to When Stable the balance will automatically print the dis played value when stability is achiev
4. ee Ohaus Discovery EN 21 3 5 9 Density Cont Liquid Density Determinations The density of a liquid can be made using a sinker of known volume The sinker sinker is not included in the kit is weighed in air and then in the liquid whose density is to be determined The density Q can be determined from the two weighings as follows Q Density of the liquid Q AB A Weight of the sinker in air B Weight of the sinker in liquid V Volume of the sinker P Buoyancy of the sinker in the liquid P A B In DENSITY SETUP set Mode to Liquid Density and enter sinker volume in cc s After weighing the sinker in air and then weighing the sinker immersed in liquid the balance calculates the density of the liquid and is displayed in grams cc See illustrations below for placement of the sinker When the sinker is immersed in the liquid it must not come into contact with the bottom of the beaker Sinker Sinker in Air Sinker in water Porous Material Density Determinations The density of a porous oil impregnated part can be made with the balance Weigh the part dry prior to oil impregnation and record its weight You must also know the density value of the oil fo be used in immersing the part before starting In this procedure you will follow the method for solid density measurements using water Enter the dry weight of the porous material and t
5. ee Ohaus Discovery EN 19 3 5 9 Density Cont The density Q is the quotient of the mass m and the volume V a N V Density determinations are performed by using Archimedes principle This principle states that every solid body immersed in a fluid loses weight by an amount equal to that of the fluid it displaces The density table for water is included in the Discovery balance software The density of a solid is determined with the aid of a liquid whose density Qo is known water is used as an auxiliary liquid The solid is weighed in air A and then in the auxiliary liquid B The density Q can be calculated from the two weighings as follows Q a A B eQ0 The balance allows direct determination of the buoyancy P P A B and consequently the above formula can be simplified oes Q Density of the solid A Weight of the solid in air B Weight of the solid in the auxiliary liquid QO Density of the auxiliary liquid at a given temperature this value depends on the temperature The density table for water is included in Discovery balances P Buoyancy of the solid in the auxiliary liquid corresponds to A B Sample Weighing in Air Sample Weighing in Liquid Buoyancy Sample Weighing Place the solid in the Weighing Pan on the Weigh Below Hook in the liquid as shown Ensure that there are no a
6. Error 53 e EEPROM checksum error e Cycle power on off If balance fails to operate return for service LOW REF WT e Average piece weight too small Warning e See section 3 5 3 REF WT Err e Reference weight too small The weight on the e Increase sample size pan is too small to define a valid reference weight e Busy tare zero printing e Wait until completion 80104130 indd 41 11 7 2006 9 22 45 AM ee E EN 42 Ohaus Discovery 4 4 Service Information If the Troubleshooting section does not resolve or describe your problem contact your authorized Ohaus Service Agent For Service assistance or fechnical support in the United States call toll free 1 800 672 7722 between 8 00 AM and 5 00 PM EST An Ohaus product service spe cialist will be available to provide assistance Outside the USA please visit our web site www ohaus com to locate the office nearest you 4 5 Parts Description US Part Number Global Part Number e Power Pack 100 120 ac US Plug 490202 010 21202536 Cord set part of Power pack e Power Pack Cord set required for UK European 490203 010 21202537 and Australian e Cord Set 230 Vac UK Plug 76448 00 00089405 e Cord Set 230 Vac European Plug 76198 00 00087925 e Cord Set 230 Vac Australian Plug 76199 01 00088751 e In Use Cover Kit 12103498 e Replacement Pan DV114C DV214C DV215CD 9973 00 00223028 e Replacement Pan DV314C 9973 01 00223023 4 6 Ac
7. The following fable lists common problems possible causes and remedies If the problem persists contact Ohaus or your authorized Ohaus dealer TROUBLESHOOTING TABLE Symptom Possible Cause Remedy Balance will not turn on e AC power not connected e AC power adapter defective e Connect AC adapter e Replace AC power adapter Balance does not display accurately e Improper calibration e Unstable environment e Perform calibration e Move balance to a suitable location Cannot calibrate the balance e Calibration menu locked e FT set to on e Unstable weight reading e Turn Calibration menu lock off e Turn LFT off e Eliminate vibration and drafts Cannot change Menu settings e Submenu locked e FT set to on e Unlock sub menu e Turn LFT off Error 7 0 e Unstable weight reading when defining the e Eliminate vibration and drafts reference weight Error 8 1 e Weight reading exceeds Power On Zero limit e Clear pan Error 8 2 e Weight reading below Power On Zero limit e Put pan on balance Error 8 3 e Weight reading exceeds overload limit e Clear pan Error 8 4 e Weight reading below underload limit e Put pan on balance Error 9 0 e Internal fault e Return balance for service Error 9 5 e Production calibration not present e Return balance for service Error 9 8 e User calibration data not present Required for e Calibrate balance LFT ON only
8. Vl OHAUS Ohaus Discovery Balances Instruction Manual 80104130 indd 2 11 7 2006 9 22 27 AM ME Ohaus Corporation 19A Chapin Road P O Box 2033 Pine Brook New Jersey 07058 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 Instrument Type Discovery Series EC Marking EC Directive Applicable Standards 73 23 EEC EN61010 1 2001 Low Voltage 89 336 EEC EN61326 1997 A1 A2 01 A3 03 class B Electromagnetic compatibility EN61326 1997 A1 A2 01 A3 03 minimal requirements For non automatic weighing instruments used in an Article 1 2 a application additional metrological marking according to Annex IV of Council directive 90 384 EEC must be attached to the instrument o e XX 90 384 EEC EN45501 1992 1259 M Non Automatic XX Year Weighing Instruments Applies only to certified non automatic weighing instruments Date April 1 2006 ae bee Ted Xia Urs M ller President General Manager Ohaus Corporation Ohaus Europe Pine Brook NJ USA Greifensee Switzerland 80104130 indd 3 11 7 2006 9 22 28 AM ME Important notice for verified weighing instruments Weighing Instruments verified at the place of manufacture bear one
9. Setup Readout Mode Unit Print EN 11 READOUT 3 7 4 Auto Zero Filter Gross Ind End Read Output When Stable GLP Tare Auto Print Content Num Only Header Gross Net Tare Ref Result GLP Layout Line Format ALF Form Feed List End Print GLP PRINT 3 7 10 Time Balance ID User ID Project ID Difference Name End GLP Prt D en 11 7 2006 9 22 31 AM ee EN 12 Ohaus Discovery 3 4 2 Menu Navigation The Discovery menu structure consists of three levels The top level is the main menu which consists of a number of sub menus TOP LEVEL Enter A CALIBRATE SETUP READOUT MODE UNIT PRINT y END LOCKOUT RESET GLP PRINT H GLP DATA RS232 Z SECOND LEVEL Typical Sub Menu END RS232 BAUD The second level of the menu structure is the sub menu HANDSHAKE level Each sub menu is a loop that consists of a number of menu items a Typical Menu ltem _ __ PARITY BOTTOM LEVEL The bottom level of the menu structure is the menu item level Each menu item level consists of two or more settings 3 4 3 Changing Settings To change a menu setting perform the following steps ENTER THE MENU Press and hold the Menu button until MENU appears on the primary 7 Segment display Release the button and the first
10. EN 31 3 7 2 Calibration Discovery balances offer a choice of 4 calibration methods Internal Calibration Advanced AutoCal Span Calibration Calibration Test and Calibration Adjust Advanced AutoCal Two internal masses are used for linearization of calibration by using three weight values zero a weight value at midpoint of the balance s weighing range and a weight value at or near the balance s specified capacity e Span Span calibration ensures that the balance reads correctly within specifications using two weight values zero and a weight value between 25 and 100 of the balance s capacity e Cal Test Calibration test allows the stored calibration data to be tested against the current mass being used for the test e Cal Adj AutoCal allows adjustment of the infernal calibration Notes Calibration may be locked out to prevent unauthorized personnel from changing calibration If calibration has been locked out you can access Cal Test and AutoCal Before beginning calibration have masses available Masses required for calibration are listed in the table in this section To navigate the calibration menu proceed as follows Press the Yes bution to select the sub menu selection Press No to advance to the next sub menu selection press Back to go to previous sub menu selection Press Exit fo return to applicable mode CALIBRATE 80104130 indd 31 D 11 7 2006 9 22 43 AM o ME EN 32 Ohaus Dis
11. Section 3 7 5 to enable Percent Weighing Press and hold Mode button until MODE PERCENT is displayed To Establish a Reference Weight PERCENT is displayed with CLEAR REF blinking Press the No button to use the stored reference weight and begin Percent Weighing Press Yes to continue PUT SAMPLE blinking will be shown on the display Place the sample on the pan and press the Function button The balance indicates the sample weight on the primary display as 100 The actual sample weight is shown on the secondary display This example illustrates 20 grams as the reference weight Remove the reference weight and place the item to be compared on the pan The balance indi cates the actual percentage on the primary display The secondary display indicates the weight in the selected measuring unit Pressing the Function button momentarily displays the reference weight on the secondary display Pressing the Function button a second time will return to the actual weight Establish New Reference Weight Press and hold the Mode button until PERCENT is shown on the secondary display PUT SAMPLE will blink on the lower display Add new reference weight and press Function button to accept new 100 reference 80104130 indd 14 D 11 7 2006 9 22 32 AM Ohaus Discovery EN 15 3 5 4 Check Weighing Check Weighing is used to compare the weight of a sample against target limits Press and hold Mode button MODE CHECK is displayed then
12. Totalization e Density G N T e Pipette Calibration e High Point Statistics Other Standard features include e Two line backlit LCD e In use cover RS232 interface Weigh below hook Automatic Internal Calibration Overload and Underload indicators e Lock out switch safeguards pre set parameters Legal for Trade models AC Adapter operation AC Adapter included Adjustable feet and level bubble Anti static wipes 1 3 Safety Precautions Please follow these safety precautions Verify that the input voltage printed on the AC Adapter matches the local AC power supply Use the balance only in dry locations e Do not operate the balance in hostile environments Do not drop loads on the pan Service should be performed only by authorized personnel 80104130 indd 3 D 11 7 2006 9 22 29 AM o ME EN 4 Ohaus Discovery 2 INSTALLATION 2 1 Unpacking Carefully remove your Discovery balance and each of its components from the package Save the packaging to ensure safe storage and trans port 2 2 Installing Components Refer to the illustration and instructions below to identify and assemble your Discovery balance with its components All components must be installed before using the balance 2 2 1 Assembly 1 Open the side doors of the balance then Install the Shield Wind Ring and Pan as shown in the illustration 2 Place the In Use cover on the front panel of the balance In Use Cover Wind Ring Shield
13. Weighing Use this mode to determine the weight of items in the selected unit of measure The Discovery balance is shipped with grams enabled Before using other units of measure these units must be turned on in the Unit menu See Section 3 7 6 Weigh Press and hold Mode until the display shows WEIGH then release the button Press Zero to Zero the balance Place objects to be weighed on the pan to display the weight The example displays a 200 gram weight in grams unit of measure 3 5 2 Parts Counting Use the Parts Counting Mode to count samples of uniform weight Press and hold Mode until MODE COUNT is displayed then release the button Establish an Average Piece Weight APW Each time a new type of part is counted the nominal weight of one piece Average Piece Weight must be established using a small quantity of pieces This APW is stored until replaced by another APW When entering parts counting from another mode CLEAR APW blinking will appear in the lower display Press No to use the previously saved APW Otherwise press Yes to establish a new APW The current weight 0 0000 is shown on the primary display and the default sample size PLACE 10 is shown on the secondary display To change the sample size press and hold the No button to increment the sample size through the range of 1 to 99 A short press will increment size by 1 a long press will increment size by 10 Release the button when the desire
14. display 80104130 indd 27 D 11 7 2006 9 22 40 AM o ME EN 28 Ohaus Discovery 3 5 11 Pipette Calibration Pipette calibration checks the accuracy and precision values of pipettes by weight analysis The balance is capable of recording data of each pipette tested The density table for water is included If other liquids are used for pipette calibration you must enter the liquid s density in g cc at current room temperature Since all calculations are made within the balance it is also required that you know the atmospheric pressure A printout can be made which specifies all parameters of the calibration made Parameters include test liquid liquid density H20 temperature barometer unit barometer pressure nominal and nominal units have to be set first Pipette calibration can be accomplished manually or automatically in the balance Calculations made within the balance provide results of Inaccuracy and Imprecision To Establish Pipette Calibration Refer fo paragraph 3 7 5 for Pipette set up procedures Enable Pipette Mode in the Menu where the following parameters can be set liquid barometric pressure etc Press and hold Mode button until MODE PIPETTE is shown Press the Yes button MODE SET MANUAL is displayed You can select either AUTO or MANUAL Use the No button to change selec tion and Yes button to accept Press the Yes button TEMP 25 00 c is displayed Press the No button fo increment digit edit field and B
15. in setup as Statistical weighing Use the same general procedure Press and hold Mode button until STATS is shown on the secondary display STATS CHG PARAM blinking is displayed Press the Yes button SAMPLE SIZE 5 is displayed Pressing the No but ton increments the sample size Back button decrements the sample size Pressing the Yes button accepts the digit and advances to the next digit When the desired number of samples has been selected press the Yes button The display will change to 0 0000 g SAMPLE 1 Place the first sample on the pan then press the Function button The display will show the weight of the subject with a countdown period then the weight of the subject with HOLD is dis played Press the Function button the weight of the subject is displayed with CLEAR PAN Remove the subject from the pan and place a new subject on the pan then press the Function button Continue this procedure until all samples have been weighed After the last sample has been taken the display will indicate the deviation By pressing the Function button repeately the balance indicates the Relative Deviation Mean Sum Maximum and Minimum readings off all samples To print statistical results refer to Sections 3 7 7 3 7 8 3 7 9 and 3 7 10 to set up printing Once setups are completed press the Print button To Establish Statistical Animal Weighing Parameters Press and hold the Mode button until STATS is shown on the secondary
16. of the preceding mark on the packing label and the green M M M metrology sticker on the descriptive plate They may be put into service immediately y Weighing Instruments fo be verified in two stages have no green M metrology on the descriptive plate and bear W DA one of the preceding identification mark on the packing label The second stage of the initial verification must be carried out by the approved service organization of the authorized representative within the EC or by the national weight amp measures W M authorities The first stage of the initial verification has been carried out at the manufacturers work lt comprises all tests according to the adopted European standard EN 45501 1992 paragraph 8 2 2 If national regulations limit the validity period of the verification the user of the weighing instrument must strictly observe the re verification period and inform the respective W M authorities Disposal In conformance with the European Directive 2002 96 EC on Waste Electrical and Electronic Equipment WEEE this device may not be disposed of in domestic waste This also applies to countries outside the EU per their specific requirements Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment If you have any questions please contact the responsible authority or the distributor from which you purchased this device S
17. oil A Density Determination Kit Part Number 80850045 is designed to be used with Ohaus Discovery balances Illustrations in this procedure refer to the density kit however you may use whatever lab apparatus that will suit the requirements for density measurements A built in reference density fable for water at temperatures between 10 C and 30 C is included in the balance software Review this entire section before attempting density measurements When making density measurements the material should weigh at least 10 0 mg on an analytical balance and 100 mg on a precision balance Balance Preparation with Ohaus Density Kit Optional Allow the balance to warm up sufficiently before making mea surements Open either the left or right side door of the balance and remove the Pan as shown Insert the Bracket into the balance where the Pan was removed The Equalizing Washer is not used Bracket gt s7 5 Balance Preparation Equalizing Bracket Weigh Below Hook Washer Kit Components Place the Support into position over the bracket making sure the Support does not make contact with the Bracket as shown in illustration Bracket Support Mounting Beaker Installation Install beaker on support as shown NOTE Beaker and thermometer are not supplied as part of the density kit 80104130 indd 18 D 11 7 2006 9 22 35 AM
18. release the button To Establish Check Weighing Parameters CHECK is displayed with CHG PARAM blinking Press the No button to use the stored limits and begin Check Weighing or press Yes to set Check Weighing limits Setting Under and Over Lmits The primary display shows UNDER or OVER indicating which limit is being entered The secondary display shows the previous setting blinking Press the Yes button The primary display shows UNDER The secondary display indicates the previous entry with the first digit blinking Press the Yes button to accept the digit and advance to the next digit Press the No button and Back but ton to edit the setting The Under Limit is the first to be edited followed by the Over Limit Press the Yes button to accept the limit settings To skip quickly to the end of settings press Exit Editing Limits The limits are edited one digit at a time The digit being edited is blinking Its value can be incre mented by pressing the No button or decremented by pressing the Back button When the desired value is displayed press the Yes button to accept the value and proceed to the next digit When all digits have been edited the new limit value is shown blinking on the secondary dis play Press the Yes button to accept the limit settings When editing of the Over limit is complete Check Weighing begins Place the sample on the pan The UNDER ACCEPT OVER status is shown on the primary display while
19. setting the gross indicator to G gross B brutto or Off End Read EN 35 Press the Yes button to advance to the Mode sub menu Press No to return to Auto Zero 3 7 5 Mode The Mode sub menu is used to turn Application modes On or Off MODE Weigh On Off Count On Off Apw Optimize On Off _End Count Percent On Off Check Weigh On Off Animal On Off L Fitter Low medium High _End Animal GNT On Off Weigh Totalize On Off High Point On Off Density On Off D Mode L Liquid Solid r Aux Liquid L Water Other r Porous L On Off End Density Statistics On Off FS Mode L Weigh Check L Animal L Low Medium High Pipette On Off Set Liquid Water Other Set B Unit Atm Inhg Hpa L Mbar Mmhg Psia Set N Unit L ML UL L End Pipette End Mode Use to set the Weighing Mode On or Off 11 7 2006 9 22 44 AM EN 36 Count Use to set the Counting Mode On or Off If Count is set On APW optimize can be set On or Off Percent Allows setting the percent weighing mode On or Off Check Weigh Use to set the Check Weighing Mode On or Off Animal Use to set the Animal Weighing Mode to Auto Semi Manual or Off If set to Auto Semi or Manual level averaging period can be set to 5 10 or 15 seconds G N T Use to set the GNT mode On or Off Totalize Use to set Totalize mode to Manual Auto or Off High Point Use to set High Point On or Off Mode Us
20. sub menu appears on the secondary display 14 Segment Calibration blinking Note When the secondary display is blinking press Yes to accept Press No or Back or view another selection SELECT THE SUB MENU Press the No button to select the next sub menu or the Back button to select the previous sub menu in the loop Press the Yes button to select the sub menu that appears on the secondary display blinking The sub menu name now appears on the primary display and the first menu item in the sub menu now appears on the secondary display blinking SELECT THE MENU ITEM Press the No button to select the next setting or the Back button to select the previous setting in the loop Press the Yes button to select and save the setting on the secondary display blinking as the new menu item setting EXIT THE MENU Press the Exit button at any time to quickly exit the menu or select END sub menu and press the Yes button 80104130 indd 12 D 11 7 2006 9 22 31 AM ME Ohaus Discovery EN 13 3 5 Application Modes The Discovery balance incorporates Weighing Parts Counting Percent Weighing Check Weighing Animal Dynamic Weighing Gross Net tare Weighing Totalize High Point Density Statistics and Pipette application modes The default setting has the weighing mode turned on and all other application modes turned off Note Before using any application modes they must be turned on in the Mode menu See Section 3 7 5 3 5 1
21. taken Next the display shows the default span calibration weight value Press No to change to an alternate calibration weight Press Yes when the desired calibration weight is displayed Place the specified calibration weight on the pan After calibration remove the weight from the pan To abort calibration at any time press the Exit button 80104130 indd 32 D 11 7 2006 9 22 43 AM ee E Ohaus Discovery EN 33 3 7 2 Calibration Cont Calibration Test Calibration test allows a check of a known calibration mass against the last stored calibration information in the balance Press and hold the Cal button until MENU CALIBRATE is displayed Press Yes to enter calibration Press No until CAL TEST is displayed Press Yes and follow the screen instructions Place the specified weight on the pan Affer a short period the display indicates the difference in weight from the last calibration and then will display the calibration weight on the pan After the test remove the calibration weight from the pan To leave the menu press Exit 80104130 indd 33 11 7 2006 9 22 43 AM EN 34 3 7 2 Calibration Cont Calibration Adjust Calibration Adjust may be used to adjust the result of the internal calibration by 100 divisions o ME Ohaus Discovery Note Before making a calibration adjustment perform an internal calibration To verify whether an adjustment is needed place a test ma
22. E sa chacl EN 40 A MAINTENANCE aorta asirio EN 41 4 1 CABANON irnn a lara EN 41 4 2 CIEANING si semara a E EE A a Ea a E E EA A A T EN 41 43 e 0 0 519 Lo 0 COPPER a O EN 41 4 24 Servico nO MANN tc EN 42 de POS atada ire d tods EN 42 46 CCBSSOTIES inne energie ferner EN 42 5 TECHNICAL DATA cui e d EN 43 A sha cabelas ESTATE ee EN 43 52 SSPECIICCMOMS sisas e tatencen shares sean ne el ee ee Tree ee near EN 44 5 3 Capacity X ReadabiliV ne ern ee EN 45 5 47 2 COMMUNICAON sense e a aa a E a teaser aeia a des cda EN 45 O A O EN 45 542 CONMECONS RO EN 46 e Be e e nee OA A a NN EN 47 80104130 indd 2 D 11 7 2006 9 22 29 AM ee Ohaus Discovery EN 3 1 INTRODUCTION This manual contains installation operation and maintenance instructions for the Ohaus Discovery balances Please read the manual com pletely before using the balance 1 1 Description Ohaus Discovery balances are precision weighing instruments that will provide you with years of service if properly cared for The Ohaus Discovery balances are available in capacities from 110 grams to 310 grams 1 1 1 Model Name Designations Example DV214CD DV Product family abbreviation Discovery 214 210g model with 0 0001g readability C With internal calibration AutoCal D Dual range model 1 2 Features The Ohaus Discovery balances include many application modes e Weighing Parts Counting e Animal Weighing e Check Weighing e Percent Weighing e
23. N 10 Gade 21010 eee ee EEE RE cen rrr Trea ener STEEL te E E A EN 11 SAk MENU SUCU sata EN 11 34 2 MentiNovIGO ON isos edades EN 12 3 4 3 Changing SelingS een Zune o e ea ee ee EN 12 30 ANIC CTO IM OG OS ir eo ee ee ee EN 13 SOl WoON ee ee ee ee er EN 13 3 5 2 Paris COUNT estarian a pci as ea dada EN 13 3 009 Percent WEIGHING birra eta ld EN 14 354 Check Weighing smart EN 15 3 5 5 Dynamic AniMal Weighing isim Add EN 15 3 5 6 Gross Net Tare WEIGHING s zusenden rien EN 16 39 7 TZE tack ose O ame EN 17 3 90 95 HI POM acaso sa nE E E rantaarstmeacstaetansasietg ESE EAEE AE es EN 17 O Rubin A NE E N EA SEE EN 18 SONO SIINSES na IO EN 25 3 Pipee Cala ao ias EN 28 80104130 indd 1 D 11 7 2006 9 22 29 AM ME EN 2 Ohaus Discovery TABLE OF CONTENTS Cont 3 0 Additional FOCUS a ne leeres EN 30 3 6 1 Weigh BelOW iii A EN 30 37 Balance SONINGS trato pra id EN 30 3 7 l MenuSelfupisansseininaka A need andinds EAE a aide Gaeta tidea dia Aedes EN 30 O RS EN 31 hee MOOD PAPES oO HERICEREERRENERERRTEREE E E E E DIR ERILERRE PERLE EENREREEBE LEERE EN 35 3 74 OO EN 35 QAO NN EN 35 310 Ube AN EN 36 A EN 37 SSPE TROZO Zrii talla nds EN 37 334 9 A A Denen ee EN 37 BEZ Os GLP O EN 38 Si TeV Rassen en aaa einher EN 38 3 4712 LOCK OU nenne nenne ahnen EN 39 3 4 13 ENa A a R E ARE A EEE esse EN 39 3 8 Sealing Access tothe Balance SEMA 0 Ea AR R AE E O E EN 40 3 97 A LAU LL Lo enaa ee EE E EA A
24. T Lockout RESET Global RESET End Reset Setup Select Yes to return all Setup menu items to their factory settings Readout Select Yes to return all Readout menu items to their factory settings Mode Select Yes to return all Mode menu items to their factory settings Unit Select Yes to return all Unit menu items to their factory settings Print Select Yes to return all Print menu items to their factory settings RS232 Select Yes to return all RS232 menu items to their factory settings GLP Data Select Yes to return all GLP Data menu items to their factory settings GLP Print Select Yes to return all GLP Print menu items to their factory settings Lockout Select Yes to return all Lockout menu items to their factory settings Global Select Yes to return the menu items in all sub menus fo their factory settings End Reset Press the Yes button to advance to the Lockout menu Press the No button to return to Setup 11 7 2006 9 22 44 AM Ohaus Discovery 3 7 12 Lockout Use this sub menu to prevent unauthorized changes to menu set tings If a sub menu is locked its menu item settings can be viewed but not changed LOCKOUT Cal On Off Setup On Off Readout On Off Mode On Off Unit On Off Print On Off RS232 On Off GLP Data On Off GLP Print On Off Reset On Off Lockset On Off End Lockout Cal Set On to lock and hide the Calibration Menu Setup Set On to lock the Setup Menu Readout S
25. Y is shown DENSITY CHG PARAM is dis played Press the Yes button DENSITY 0 000000 is displayed Enter the density value of the auxiliary liquid being used from a density table use the Yes No and Back buttons When the proper density value has been entered press the Yes button The display now indicates TEMP 00 00 C blinking Enter the measured temperature of the aux iliary liquid with a precision thermometer and enter the value using the Yes No and Back buttons then press the Yes button 80104130 indd 23 D 11 7 2006 9 22 38 AM o ME EN 24 Ohaus Discovery 3 5 9 Density Cont D Density of Solid using Auxilary Liquid Cont The balance now indicates 0 0000 g IN AIR blinking Place the sample on the support and weigh in gir press the Function button Carefully submerge the sample in the auxiliary liquid in liquid using the kit and press the Func tion button The balance displays the result in grams per cubic centimeter g cc To Establish New Density Parameters Press and hold the Mode button until DENSITY is shown on the secondary display NOTE Sample illustrations values are not correct and are to be used as a guide only E Density of Porous Material Using Oil NOTE Before starting this procedure weigh the porous sample and record the dry weight This is important as you will have to enter this value later on The following should be turned On in the Setup Menu POROUS WATER Pre
26. ack button to decrement Press the Yes button to save temperature value of the liquid used in the pipettes B PRESS 1 000 ATM is displayed as an example if a different pressure unit was initially selected you can now edit the value Press the Yes button when finished with editing the value NOM 0 000 ML is displayed the example illustrates ML was selected You may now enter the Pi pette dispensing value For the purposes of this example 0 330 ML was used and an Auto Mode was selected This allows a faster method of results with limited handling of the balance Use the No Back and Yes buttons to edit the value Press the Yes button INACC 0 000000 is displayed Enter the value shown on the Pipette specification into the balance using the No Yes and Back buttons The example illustrates 5 000000 press the Yes button 80104130 indd 28 11 7 2006 9 22 41 AM Ohaus Discovery EN 29 3 5 11 Pipette Calibration Cont IMPREC 0 000000 is displayed Edit the value and press the Yes button This value is speci fied on the Pipette The example used was 5 000000 Press the Yes button to accept SAMPLE SIZE 10 is displayed Using the Yes No and Back buttons change the sample size The example shown uses 5 samples When sample size is entered press the Yes button The balance is now ready to accept samples It is essential that the balance be located A on a stable vibration free surface and away from any drafts caused by he
27. ady condition Semiautomatic Mode Place subject on the pan the balance will automatically start a countdown Remove the animal from the pan and press the Function button to return to the ready condition If the Function but fon is pressed while the animal is on the pan the primary display shows the actual weight and the secondary display shows CLEAR PAN The balance returns fo the Ready condition when the animal is removed from the pan Manual Mode Place subject on the pan and press the Function button the balance will start a countdown Remove the animal from the pan and press the Function button to return to the ready condition If the Function button is pressed while the animal is on the pan the primary display shows the actual weight and the secondary display shows CLEAR PAN The balance returns to the Ready condition when the animal is removed from the pan During Animal Cycle The primary display shows the countdown of the Filter Level setting Low 5 sec Medium 10 sec High 15 sec The secondary display shows BUSY This Animal Filter setting is configured in the Mode menu when Animal Weighing is turned On Completed Animal Cycle The primary display shows the weight of the animal and the secondary displays shows HOLD To Establish New Animal Weighing Parameters Press and hold the Mode button until ANIMAL is shown on the secondary display 3 5 6 Gross Net Tare Weighing Gross Net Tare G N T application all
28. ating and or cooling outlets The balance is very sensitive to external influences When samples are administered the draft shield doors must be closed Failure to adhere to these practices will result in incorrect results 0 0000 g SAMPLE 1 blinking is displayed Place the receptacle container on the pan and press the Tare button Place the first sample in the container SAMPLE 1 will blink press the Function button the display will now momentarily show the microliter value then tares out the value for the next sample Place the remaining samples making sure the secondary display is indicating the next sample before placing it into the container The weight of each sample is shown during the calculation period When all of the samples have been taken the balance calculates the Inaccuracy and Imprecision either as a pass or fail in percentage The examples shown here indicate passing Press the Function button to toggle between inaccuracy and imprecision displayed values To Establish New Pipette Parameters Press and hold the Mode button until PIPETTE is shown on the secondary display 80104130 indd 29 D 11 7 2006 9 22 42 AM EN 30 Ohaus Discovery 3 6 Additional Features 3 6 1 Weigh Below The Discovery balance is equipped with a weigh below hook Note Before turning the balance over remove the pan wind shield and shield to prevent damage to the glass doors Weigh Below e Prot
29. cept and advance to the next digit proceed to enter the under value for samples Press the Yes button to accept The display changes to OVER 00 0000 g Using the No Back and Yes button enter the Over value Press the Yes button to accept SAMPLE SIZE 3 is displayed on the sample illustration The number will vary according to the number of samples set in the Menu Using the No Back and Yes buttons enter the desired sample size in this case 5 was used then press the Yes button UNDER SAMPLE 1 is displayed Place sample 1 on the pan either UNDER ACCEPT or OVER SAMPLE 1 appears on the display In this case the sample illustration indicates ACCEPT SAMPLE 1 Press the Function button Remove the first sample from the pan the balance indicates UNDER SAMPLE 2 Place the second sample on the pan and press the Function button Repeat this procedure for all of the samples When all of the samples have been entered the display will indicate the Deviation By pressing the Function button repeately the balance indicates the Relative Deviation Mean Sum Maximum and Minimum readings of all samples To Establish Statistical Check Weighing Parameters Press and hold the Mode button until STATS is shown on the secondary display 80104130 indd 26 D Ohaus Discovery 11 7 2006 9 22 40 AM ee Ohaus Discovery EN 27 3 5 10 Statistics Cont Statistical Animal Weighing This procedure is very similiar
30. cessories Storage Cover 9773 79 80850012 Security Device 77401 00 00223150 Density Determination Kit 77402 00 80850008 RS232 Cables e Cable DB9M DB9F 80500525 e Cable DB9M DB25F 80500524 e Cable DB9M SF42 Printer 80500571 e Cable DB9M Apple 80500562 SF42 Printer SF42 Calibration Masses e 100g ASTM Class 49015 11 80780020 e 200g ASTM Class 1 49025 11 80780023 e 100g OIML E2 80780275 e 200g OIML E2 80780276 80104130 indd 42 11 7 2006 9 22 45 AM Ohaus Discovery 5 TECHNICAL DATA Ambient conditions The technical data are valid under the following ambient conditions e Ambient temperature 10 C to 40 C Height above sea level Up to 4000 m Storage temperature range 10 C to 70 C Voltage fluctuations 15 10 Power e AC adapter To national standard as per list in Section 4 5 Balance power input 12 VAC 50 60Hz 1 0A Materials e Base Housing Painted Aluminum e Draft Shield Painted Aluminum e Rear Cover Plastic Polyurethane e Terminal ABS PC Blend Plastic e Weighing Pan Stainless Steel e In Use Display Cover PET Plastic e Draftshield Doors Glass Protection e Protected against dust and water e Pollution degree 2 e Installation category Class Il e EMC see declaration of conformity 5 1 Drawings 20cm 80104130 indd 43 Relative humidity Max 80 at 31 C linearly decreasing to 50 at 40 C non condensi
31. covery 3 7 2 Calibration Cont Automatic Internal Calibration Before Automatic Internal calaibration can be used it must be turned on first in Menu Calibrate With the balance on press and hold the Cal button until MENU CALIBRATE is displayed then release the Cal button CALIBRATE is blinking Press the Yes button to enter calibration CAL AUTO CAL is displayed Press the Yes button to select Autocal After pressing the Yes button AUTOCAL SET OFF is dis played Pressing the No button will change the display to AUTOCAL SET ON then press the Yes button With Autocal set on exit the Calibrate Menu The balance may now be calibrated automatically from the weighing mode Internal calibration can be accomplished without using an external weight With the balance on press the Cal button balance begins to calibrate Press Exit to abort calibration When internal calibration is finished the balance returns to the cur rently selected mode Automatic internal calibration is a feature included with all Discovery models AutoCal will au tomatically calibrate the balance each time a change in temperature significant enough to affect accuracy or affer every 11 hours Span Calibration With the balance on press and hold the Cal button CALIBRATE blinking is displayed Press the Yes button to enter calibration Press the No button at AutoCal Press the Yes button to initiate span calibration First the zero reading is
32. d sample size appears on the secondary display Back button for reverse Place the specified number of parts on the pan A short press of the Function button will accept the sample size and calculate the APW The primary display will now indicate the number of parts The weight is shown on the secondary display 80104130 indd 13 D 11 7 2006 9 22 32 AM ee EN 14 Ohaus Discovery 3 5 2 Parts Counting Cont Pressing the Function button displays the APW on the secondary display The example shows an APW of 2 000g Press the Function button again to return to Parts Counting Mode To establish a new APW from Count Mode press Mode until COUNT appears Press No to incre ment Back to decrement Exit to leave without saving and press Yes to accept APW Optimization The only adjustment for Parts Counting is APW Optimization APW Optimization is set On or Off in the Mode menu when Parts Counting is turned On When APW Optimization is set on the APW is automatically optimized This results in more accurate parts counting The factory default is On When a new APW has been established APW Optimization occurs when the number of pieces added to the pan are between one and three times the number already on the pan The secondary display will momentarily indicate APW OPT 3 5 3 Percent Weighing Use the Percent Weighing Mode to measure the weight of a sample as a percentage of a pre estab lished reference weight Refer to
33. displayed weight stable or unstable P Print displayed weight stable or unstable CP Continuous Print OP ends Continous Print SP Print displayed stable weight SLP Auto Print stable non zero displayed weight SLZP Auto Print stable non zero weight and stable zero reading xP Interval Print x Print Interval 1 3600 seconds OP ends Interval Print H Enter Print Header Lines Z Same as pressing Zero Key T Same as pressing Tare Key xT Establish a preset Tare value in grams X preset tare value in grams To clear tare enter O for x PT Prints Tare weight stored in memory PM Print current mode weighing mode M Scroll to the next enabled mode PU Print current weighing unit U Scroll to the next enabled unit OFF Turns balance OFF ON Turns balance on PSN Print Serial Number PV Print Version name software revision and LFT ON if LFT is set ON x Set PC reference weight x in grams Must have an APW stored P Print PC reference weight 80104130 indd 45 11 7 2006 9 22 46 AM EN 46 5 4 1 Commands Cont Ohaus Discovery Command Function X Set reference weight x in grams Must have reference weight stored P Print percent reference weight xAW Set Animal Weigh Level fo x x 1 Low 2 Medium 3 High PAW Print Animal Weigh Level BAW Begin Animal cycle Manual Mode CW Clear locked weight weight lt threshold in Manual and Semi Auto modes xCO Set Checkweighing Ov
34. e to set Density Mode to Liquid or Solid adjust liquid parameters and select Porous Mode on or off Densi Statistics Use to set Statistics Weigh Check Weighing or Animal weighing On or Off Pipette Use to set Pipette Test Liquid Water or Other Barometer Atm Inhg Hpa Mbar Mmhg or Psig and Nominal Units either ML or UL End Mode Press the Yes button to advance to the Unit sub menu Press No to return to Weigh 80104130 indd 36 Ohaus Discovery 3 7 6 Unit The Unit sub menu is used fo turn measuring units On or Off UNIT mg On Off g On Off ct On Off OZ On Off ozt On Off GN On Off dwt On Off m On Off t HK On Off t SG On Off tTW On Off Custom On Off End Unit Defining Custom Unit Set Custom to ON in the Unit menu fo enable and define the Custom Unit The custom unit is defined by a conversion factor and a least Significant Digit LSD The conversion factor is used by the bal ance to convert grams to the custom weighing unit and is defined by entering a factor and an exponent The factor is a value between 0 1000000 and 1 999999 inclusive The exponent moves the decimal point of the factor to the right for positive values or to the left for negative values Enter the Factor Enter the Exponent and LSD using the Yes and No buttons Factor Exponent Conversion 3 to 3 Factor 1234 3 123 4 1234 2 12 34 1234 1 1 234 1234 0 1234 1234 1 01234 1234 2 001234 1234 3 0001234
35. ective e Cover DS To use this feature remove power O from the balance and remove the a il i protective cover for the weigh below opening as shown Install the weigh below hook Table Support do Qe O Weigh Below Hook lt D The balance can be supported using Bottom View of Balance lab jacks or any other convenient method Make sure the balance is level and secure Use a string or wire to attach items to be weighed Balance With Weigh Below Hook Installed 3 7 Balance Settings 3 7 1 Menu Setup Pressing the Menu button allows access to the menus shown below Each menu contains additional sub menus that are used to set the balance parameters This section of the manual contains all menus and descriptions required to set all parameters for the Discovery balance Please review the contents of each menu to get a better understanding of the balance s capabilities before attempting to operate the balance The diagram below illustrates the main menu in the balance Main Menu Sequence A long press of the Menu button will access the Main Menu Press the Yes button to enter the menu Press the No button to advance to the next menu selection Press Exit to return to the application mode 80104130 indd 30 D 11 7 2006 9 22 43 AM ME E Ohaus Discovery
36. ed An additional setting must be made to determine if only stable non zero values will be printed load setting or if stable zero and non zero values will be printed Load amp Zero When set to Off the Auto print feature is disabled 80104130 indd 37 EN 37 Content All of these features can be set On or Off Numeric data only Header Gross Net Tare Reference Result GLP See sample printout 3 10 Layout Determines the format of data output to a printer or computer If Line Format is set to Multi a multi line printout is generated If it is set to Single a single line printout is generated If 4 LF is set to yes 4 line feeds are appended to the printout If Form feed is set to Yes a form feed is appended to the printout This is useful for printing to page printers List When Yes is selected a printout of balance settings is generated End Print Press the Yes button to advance to the next menu Pressing No returns to Output menu item 3 7 8 18292 The RS232 sub menu is used to set communication parameters for an external printer or computer RS232 Baud 600 2400 19200 Parity 7 Even 7 Odd 7 No Par 8 No Parity Handshake Off XONXOFF Hardware End 3 7 9 GLP Data GLP DATA User ID Set Proj ID Set Time Type 12hr 24hr Date Type mdy dym Set End GLP Data User ID Used to enter a User ID up to 10 characters Project ID Used to enter a Project ID up to 10 characte
37. er Limit in grams xCU Set Checkweighing Under Limit in grams PCO Print Checkweighing Over Limit PCU Print Checkweighing Under Limit PTIME Print current time PDATE Print current date xAW Set AW Mode x A Automatic x S Semi Automatic x M Manual 5 4 2 Connections RS232 Interface On the rear of the balance the 9 pin female subminiature D connector is provided for interfacing to other devices The pin connections are shown in the illustration below TARE RS232 Pin Connections es 1 Remote Tare 2 TxD 260000 PRINT nm ODO 4 DSR 5 Ground 6 DIR RS232 Connector 7 CTS 8 RIS 9 Remote Print External PRINT and or TARE switches may be installed as shown in the diagram Momentary contact switches must be used To enable this feature contact Ohaus Aftermarket 80104130 indd 46 11 7 2006 9 22 46 AM ee Ohaus Discovery EN 47 LIMITED WARRANTY Ohaus products are warranted against defects in materials and workmanship from the date of delivery through the duration of the warranty pe riod 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 radioactive or corrosive materials has foreign material pene
38. et On to lock the Readout Menu Mode Set On to lock the Mode Menu Unit Set On to lock the Unit Menu Print Set On to lock the Print Menu RS232 Set On to lock the RS232 Menu GLP Data Set On to lock the GLP Data Menu GLP Print Set On to lock the GLP Print Menu 80104130 indd 39 EN 39 Reset Set On to lock the Reset Menu Lockset Set On to lock the menu settings in Lockout End Lockout Press the Yes button to advance to the End menu Press the No button to return to the Cal menu 3 7 13 End The End menu is used to exit the menus and return to previous ap plication 11 7 2006 9 22 45 AM ME E EN 40 Ohaus Discovery 3 8 Sealing Access to the Balance Settings When used in conjunction with the Lockout menu the balance may be sealed to prevent or detect unauthorized changes to the balance settings For legal for trade applications the balance must be sealed to prevent access to the metrological parameters To seal the balance cover the Lock switch access hole at the rear of the balance A paper seal may be installed as shown NOTE Consult local Weights and measures official to determine sealing method requirements To regain access to the locked balance settings break the seal and power up the balance When OHAUS appears on the display press and hold the recessed Lock Switch until a weight is displayed
39. he balance displays the result in grams per centimeter g cc Typical samples are shown To Establish New Density Parameters Press and hold the Mode button until DENSITY is shown on the secondary display B Measuring the Density of a Buoyant Material Using Water The following menu items should be turned on SOLID WATER Follow the same procedure in A except refer fo Buoyancy Sample weighing illustrations and place sample as shown 80104130 indd 22 D 11 7 2006 9 22 37 AM Ohaus Discovery EN 23 3 5 9 Density Cont C Liquid Density using Calibrated Sinker Not supplied The following menu item should be turned on LIQUID Press and hold the Mode button until MODE DENSITY is displayed then release the button DEN SITY CHG PARAM is displayed Press the Yes button VOLUME 00 000000 is displayed Enter the volume of the sinker use the Yes No and Back buttons The balance indicates 0 0000g IN AIR blinking Place the sinker on the pan and press the Function button Place the sinker in the beaker in liquid as shown in previous illustration and press the Function button The balance displays the result in grams per centimeter g cc To Establish New Density Parameters Press and hold the Mode button until DENSITY is shown on the secondary display D Density of Solid using Auxilary Liquid The following menu items should be turned on SOLID AUXILIARY Press and hold Function button until MODE DENSIT
40. he density of oil used to impregnate the part To Determine Wet Density Wet density of the sample can be calculated by following the normal Solid Density procedure using the oil impregnated part 80104130 indd 21 D 11 7 2006 9 22 37 AM ME E EN 22 Ohaus Discovery 3 5 9 Density Cont Before density measurements can be made the density mode of operation must be set up in the Menu Mode Sub menu It is in the Mode Sub menu where solid porous water or auxiliary liquids are selected After the basic parameters have been set the balance density operation is further determined in the APPL DENSITY menu This menu allows the setting of Density Temperature Dry Weight of Porous Material Sinker Volume and Density of Oil To Perform a Density Measurement Refer fo paragraph 3 7 5 for density set up procedures A Measuring the Density of a Solid Using Water The following menu items should be turned on SOLID WATER Press and hold Mode until MODE DENSITY appears DENSITY CHG PARAM is displayed Press the Yes button TEMP 20 00 C blinking is displayed Measure the temperature of the water with a precision thermometer and enter the temperature using the Yes No and Back buttons When the last digit is entered press the YES button to save The balance indicates 0 0000 IN AIR blinking Weigh the sample in air and press the Function button Now weigh the sample in water liquid and press the Function button T
41. hould this device be passed on to other parties for private or professional use the content of this regulation must also be related Thank you for your contribution to environmental protection Compliance to the following standards is indicated by the corresponding marking on the product Mark Standard AS NZS CISPR 22 AS NZS 61000 4 3 N13123 CAN CSA 022 2 No 61010 1 04 G B UL Std No 61010A 1 Cc US MC173467 FCC 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 interference when the equipment is operated in a commercial environ ment 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 interference at his own expense Industry Canada Note This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe A est conforme la norme NMB 003 du Canada ISO 9001 Registration In 1994 Ohaus Corporation USA was awarded a certificate of registration to ISO 9001 by Bureau Veritus Quality International BVQI confirmi
42. ir bubbles on the solid to be weighed Close the draft shield doors and weigh the solid buoyancy P The display indicates the density in grams cc 80104130 indd 19 D 11 7 2006 9 22 36 AM ee E EN 20 Ohaus Discovery 3 5 9 Density Cont Solid Density Determinations for items Less Dense Than Water For density determination of solids with a density less than 1 g CM3 the bottom of the Weigh Below Hook for solids must be used as it holds the solid body below the surface of the auxiliary liquid If the buoyancy of the solid is greater than the weight of the Weigh Below Hook the Weigh Below Hook must be weighted by placing an additional mass on the submerged part of the Weigh Below Hook as shown Weigh the sample in air first as explained in the previous procedure After loading the additional mass tare the balance and start the weighing again Wait until the balance has reached stability and note the dis played weight P buoyancy of the solid Improving the Accuracy of the Result of Solid Density The following tips should help you improve the accuracy of the results in the density determination of solids Temperature Solids are generally so insensitive to temperature fluctuations that the corresponding density changes are of no consequence However as work is performed with an auxiliary liquid in the density determination of solids their temperature must be taken into account as the temperature has a greater effec
43. ng Warm up time At least 120 minutes after connecting balance to the power supply 11 8in 7 9in EN 43 11 7 2006 9 22 46 AM EN 44 Ohaus Discovery 5 2 Specifications rei a 1 0020 Weighing Units mg 9 oz ct dwt ozt GN taels 3 mommes Custom unit Application Modes Weighing Parts Counting percent Weighing Checkweighing Animal Dynamic Weighing G N T Totalization High Point Density Statistics Pipette Features RS232 Interface GLP Protocol Integral Weigh Below Hook selectable Enviromental Settings Leveling indicator Tare Range To Capacity by Subtraction Stabilization Time s ee a ma Sensitivity Drift 10 300 Calibration configuration for US Euro UK Japan and Australian Display Type Display Size inem Pan Size Diameter inem Free Height above pan in cm 9 5 24 Dimension WxHxD in cm 7 9 x 11 8 x 18 20 x 30 x 45 7 Net Weight Ib kg 22 5 10 2 80104130 indd 44 11 7 2006 9 22 46 AM Ohaus Discovery EN 45 5 3 Capacity x Readability um owe wase vata CEC 5 4 Communication The balance is equipped with an RS232 interface Connecting the balance to a computer enables you to operate the balance from the com puter as well as receive data such as displayed weight 5 4 1 Commands Commands listed in the following table will be acknowledged by the balance The balance will return ES for invalid commands Command Function IP Immediate Print of
44. ng that the Ohaus quality management system is compliant with the ISO 9001 standard s requirements On May 15 2003 Ohaus Corporation USA was re registered to the ISO 9001 2000 standard 80104130 indd 4 D 11 7 2006 9 22 28 AM A Ohaus Discovery EN 1 TABLE OF CONTENTS 1 A en ee ee EN 3 Wells DESCHPN oa EN 3 1 22 O EN 3 S Safety Precaulions ania enseen unsern aa eh EN 3 2 INSTALLATION Ess Sn E as Stand putes E Sm ara Be len Brand E ar E A EN 4 O ren EN 4 22 Installing Components latas EN 4 2 2 1 A an elle ns lenken eae ane EN 4 2 3 Selecting the loci senior nie ana in a nie EN 4 2 4 keveling the Balance nsneenia de ah naeh EN 4 2 5 COMMOCTIAG POWER PE nee EEE ERREGER TREE RE En InEEe ee EN 5 OS EN 5 2 5 2 Tuming BowerOnandOf si si EN 5 2 6 Initial GalibraNomz edss antenne terceerear renee trina crter rere Hakan eer Ba A TEE Ten EEE RE EEE rrr err reer er EN 5 3 OPERATION ars pect rte ae are Besen rennen E ae en Seach ee A E EN 7 3 1 Overview of Controls amp Display FUNCTIONS 44 444HHeneeneneeeneneenseneeneenee nennen rra rra rra EN 7 3 2 Button Control FUNCIONS taninos EN 9 3 3 Using the Button Control FUNCIONS ioscia nao EN 10 3 3 1 Seting the Balance to Zero iio seal sn EN 10 3 32 OOO EN 10 3 3 3 Changing Umits ot MOGSUIC aiii EN 10 3 34 Changing Application MOUGS y nennen EN 10 3 3 07 Printing Dld gae R AO EN 10 39 0 CUlIDIANON a nr Eee Eee E
45. ows the balance to display Gross sample plus container weight NET sample weight and TARE con tainer weight The primary display will show the reading of the net or tare weight The secondary display will show the reading of the gross weight Refer to section 3 7 5 to enable G N T weighing G N T Weighing Press and hold Mode button MODE GNT is displayed then release button Clear pan and press the On Zero button to zero the balance before beginning Place a container on the pan then press the Tare button The container s weight is stored in memory in the balance Place the material in the container The balance immediately calculates the Gross Net and Tare weights A short press of the Function Mode button will toggle the 7 segment display to show the tare weight and the net weight Example shown represents a container weight of 20g and material of 50g The gross weight is displayed as 70g Before a new container is used zero the balance by using the On Zero button A short press of the Print button will print the G N T weights Net and Tare have to be turned On in the Print Content sub menu 80104130 indd 16 D 11 7 2006 9 22 34 AM Ohaus Discovery EN 17 3 5 7 Totalize Totalize measures the cumulative weight of items Refer to Section 3 7 5 to enable totalizing Press the Mode button then release when MODE TOTALIZE is displayed The primary display shows the current weight To Establish Totalize Parameters The prima
46. rns on when the measurement is within 1 4 division d of the zero setting 3 3 2 Toring Taring refers to the action of allowing for the weight of a container so that only the weight of objects held in the container net weight is dis played To Tare Place the empty container on the pan and press the Tare button Add material to the container The net weight of the material is displayed To clear the Tare value remove the container from the pan and press the Tare button Auto Tare Auto Tare automatically tares the first item placed on the pan Auto Tare must be set ON in the Setup sub menu See Section 3 7 3 Setup Sub menu The secondary display shows CONTAINER blinking When the container is placed on the pan it is automatically tared and Net weight is displayed The Tare value is automatically cleared when the container is removed from the pan Preset Tare A preset tare may be entered by using a computer connected to the COM 1 Connector To enter a Preset Tare send the xT command to the bal ance where x is the value in grams Enter a value of O fo clear the preset tare 3 3 3 Changing Units of Measure The Discovery balance can be configured to measure in a variety of units including custom units The Unit Sub menu is used to enable or dis able a specific unit To select a unit of measure Press and hold the Unit button then release it when the desired unit is displayed Note If the desired unit is not displayed it mus
47. rs 11 7 2006 9 22 44 AM EN 38 Entering a User ID or Project ID Enter the user or Project ID one character at a time The character to be entered is highlighted by a blinking cursor underscore Press the No button repeatedly to scroll through the list of available char acters space O through 9 A through Z Press the Yes button to select the displayed character and move the cursor one position to the right After the tenth character is entered the ten character ID will blink Press the No button to change the displayed ID or the Yes button to accept the ID and proceed to the next menu item Time Type Set the type to 12 hours or 24 hours Set Set the current time using the format selected in the type menu item Date Set the date type M D Y D M Y Y M D M Y D Y D M D Y M and the actual date End GLP Data Press the Yes button to advance to the GLP Print sub menu Press the No button to return to User ID 3 7 10 GLP Print Select GLP items to be printed by setting them to On GLP PRINT Time On Off Balance ID On Off User ID On Off Project ID On Off Difference On Off Name On Off End GLP Prt End GLP Print Press the Yes button to advance to the reset sub menu Press the No button to return to Time 80104130 indd 38 Ohaus Discovery 3 7 11 Reset RESET Setup RESET Readout RESET Mode RESET Unit RESET Print RESET RS232 RESET GLP Data RESET GLP Print RESE
48. ry display shows TOTAL and the secondary display shows CHG PARAM blinking At this point you can select either a manual or automatic mode Press the Yes button MODE is shown in the primary display with SET MANUAL in the secondary display blinking Press the No button to change mode and Yes to accept Manual Mode When entering the manual mode the primary display shows the current weight the secondary dis play shows the current totalized weight Pan must be clear and stable before beginning process secondary display will blink when balance is ready to begin totalizing weights Place the item on the pan Press the Function button to add the weight of the item to the total The new total is shown on the secondary display when stability is reached Remove the item from the pan Balance must be stabilized at zero before next item can be placed The primary display indicates the current weight on the pan The secondary display indicates the total accumulated weight Add the next item and press the Function button The display shown indicates a cumulative weight of 70 grams Remove item from pan and repeat process for each new item Automatic Mode After entering the automatic mode place the item on the pan The weight of the item is shown on the primary display The secondary display will show BUSY blinking affer the item is added until the balance is stabilized and then shows the new total on the secondary display Remove the item from
49. ss on the pan and note the difference in divisions between the nominal mass value and the actual reading Refer to Calibration Masses Table and use the highest value from the Span Calibration Points column as the test mass If the difference is within 1 division calibration adjust ment is not required If the difference exceeds 1 division calibration adjustment is recommended Following a calibration adjustment repeat the internal calibration and verification procedures To perform a calibration adjustment press the Cal button and release it when MENU CALIBRATE is displayed Press Yes to enter the Calibration sub menu Press No until CAL ADJ is displayed Press Yes to enter the CAL ADJ menu item and view the current setting If the actual reading was less than the nominal mass value a positive adjustment is required Press No until the setting matches the difference noted earlier in the procedure If the actual read ing was greater than the nominal mass value a negative adjustment is required Press Back until the setting matches the difference noted earlier in the procedure Press Yes to accept and store the setting CALIBRATION MASSES TABLE Model Span Calibration Points 1 Weight Class DVI14C 100g ASTMI Class OIML El DV214C 200g ASTMI Class OIML El DV314C 300g ASTMI Class OIML El DV215CD 200g ASTMI Class OIML El 80104130 indd 34 D 11 7 2006 9 22 44 AM Ohaus Discovery 3 7 3 Set
50. ss and hold the Mode button until DENSITY is shown on the secondary display Press the Yes button TEMP 20 00 C is displayed Enter the water temperature from a precision thermometer then press the Yes button WEIGHT 00 00000 is displayed Enter the weight of the porous material previously recorded then press the Yes button D OIL 0 000000 is displayed Enter the density of the oil then press Yes The balance indicates 0 0000g IN AIR blinking Immerse the porous material in oil to saturate it and weigh press the Function button Now immerse the porous material in water in liquid and press the Function button The balance displays the result in grams per cubic centimeter g cc To Establish New Density Parameters Press and hold the Mode button until DENSITY is shown on the secondary display NOTE Sample illustration values are not correct and are to be used as a guide only 80104130 indd 24 D 11 7 2006 9 22 39 AM Ohaus Discovery EN 25 3 5 10 Statistics Statistics are used when it is desired to compare a number of samples and examine the relative deviation of the samples along with other statistical data A minimum of three samples is required in this program When a printer or computer is connected to the balance all statistical information can be observed and printed Weighing Animal Weighing and Check Weighing are the functions for providing Statistical Data Statistical Weighing Refer to paragraph 3 7 5 for
51. statistics set up procedures Press and hold the Mode button until STATS is shown in the secondary display STATS CHG PARAM blinking is displayed Press the Yes button SAMPLE SIZE 3 is displayed Pressing the No button increments the sample size and pressing the Back button decrements the sample size When the desired number of samples has been set press the Yes button The display will change to 0 0000 g SAMPLE 1 blinking Place the first sample on the pan and press the Function button The display will show BUSY for a few seconds and then display the weight of the first sample and SAMPLE 2 will be blinking on the display Continue the procedure until all samples have been weighed After the last sample has been weighed the display will indicate the Deviation of all samples By pressing the Function button repeately you can observe the Deviation Relative Deviation Mean Sum Maximum and Minimum readings To Establish Statistical Weighing Parameters Press and hold the Mode button until STATS is shown on the secondary display 80104130 indd 25 D 11 7 2006 9 22 40 AM EN 26 3 5 10 Statistics Cont Statistical Check Weighing Press and hold Mode button until STATS is shown on the secondary display For statistical Check Weighing use the same general procedure as in Statistical Weighing UNDER 00 0000 g is displayed Using the No button to increment and the Back button to decrement and the Yes button to ac
52. t be turned on in the Unit menu See Section 3 7 6 3 3 4 Changing Application Modes The Discovery balance can be configured to operate in various application modes The Mode Sub menu is used fo enable or disable a specific application mode Press and hold the Mode button and release it when the desired mode is shown on the secondary display Note If the desired mode is not displayed it must be turned on in the Mode menu See Section 3 7 5 3 3 5 Printing Data Press the Print button to send the displayed value fo the COM port See Section 3 10 3 3 6 Calibration Press the Cal button to enter the calibration mode See Section 3 7 2 80104130 indd 10 D 11 7 2006 9 22 31 AM Ohaus Discovery 3 4 MENU 3 4 1 Menu Structure The Discovery balance menu siructure is illustrated below CALIBRATE 3 7 2 AutoCal Span Calibration Test Cal Test Calibration Adjust Cal Adj End Cal Weighing Parts Counting Percent Weighing Check Weighing Animal Weighing GNT Totalize High Point Density Statistics Pipette End Mode RS232 3 7 8 Baud Parity Handshake End RS232 RESET 3 7 11 Setup fGLP Data Readout GLP Print Mode Lockout Unit Global Print End Reset RS232 ETA 80104130 indd 11 SETUP 3 7 3 Legal Trade Auto Tare Auto Off End Setup GN dwt m tHK tSG tTW Custom End Unit GLP DATA 3 7 9 User ID Proj ID Time Date End GLP Data LOCKOUT 3 7 12 Cal RS232
53. t with liquids and causes density changes in the order of magnitude O I to 1 per C This effect is already apparent in the third decimal place of the result To obtain accurate results we recommend that you always take the temperature of the auxiliary liquid into account on all density determina tions Air Buoyancy 1 CM3 of air weighs approximately 1 2 mg depending on the physical condition As a consequence in the weighing in air each solid experi ences a buoyancy of this magnitude the so called air buoyancy per cm3 of its volume However the air buoyancy must be taken into account only when a result is required with an accuracy of 3 to 4 decimal places To correct for this the air buoyancy 0 0012 g per cm3 volume of the body is added to the calculated result Calculated density 0 0012 g cm3 air buoyancy effective density Surface tension of the auxiliary liquid Adhesion of the liquid to the Weigh Below Hook causes an apparent weight increase of up 3 mg As the Weigh Below Hook is immersed in the auxiliary liquid in both weighings of the solid in air and in the auxiliary liquid the influence of the apparent weight increase can be neglected because the balance is tared before every measurement To reduce the effect of air bubbles and to ensure the greatest possible accuracy use a few drops of a wetting agent not supplied and add them to the auxiliary liquid 80104130 indd 20 D 11 7 2006 9 22 36 AM
54. the actual weight of the item is shown on the secondary display To Establish New Check Weighing Parameters Press and hold the Mode button until CHECK is shown on the secondary display 3 5 5 Dynamic Animal Weighing Enter this mode to weigh an unstable load such as a moving animal Refer to Section 3 7 5 to enable Animal Weighing and set Filter to either Low Medium or High the default is Medium Press and hold Mode button MODE ANIMAL is displayed then release the button To Establish Animal Weighing Parameters ANIMAL CHG PARAM blinking is displayed Press the Yes button MODE SET SEMI blinking is displayed NOTE SET AUTO SET SEMI or SET MANUAL may be displayed intially depending upon previous settings Press the No button to change the setting and Yes to accept The balance shows READY on the secondary display 80104130 indd 15 D 11 7 2006 9 22 33 AM ee E EN 16 Ohaus Discovery 3 5 5 Dynamic Animal Weighing Cont Automatic Mode Place subject on the pan the balance will automatically start a countdown At the end of the countdown period the subject weight is displayed The balance returns to the ready condition when the animal is removed from the pan If the Function button is pressed before the animal is removed from the pan the primary display shows the actual weight and the secondary display shows CLEAR PAN until the animal is removed from the pan The balance then returns to the Re
55. the pan Balance must be stabilized at zero before next item can be placed then add the next ifem To Establish New Totalize Parameters Press and hold the Mode button until TOTALIZE is shown on the secondary display 3 5 8 High Point The High Point Mode allows the user to capture and store the highest stable weight in a series of weight measurements Refer to Section 3 7 5 to enable High Point mode Press the Mode button until HI POINT is shown on the secondary display When set On the primary display will indicate the current weight reading the secondary display will indicate the highest weight reading The example indicates a current weight of 50 0000 g and a high point reading of 55 0000 g Press Function button to view lowest reading in memory To reset High Point and clear memory press and hold Mode until High Point is shown on lower display 80104130 indd 17 D 11 7 2006 9 22 34 AM ME EN 18 Ohaus Discovery 3 5 9 Density Refer to section 3 7 5 fo enable density measurements Follow the procedures as indicated after initial setup in Section 3 7 5 Read the infor mation concerning density measurements after the procedure which references an Ohaus Kit used specifically for density measurements Four methods of density determinations can be made with the Discovery balance These are 1 Solids more dense than water 2 Solids less dense than water 3 Liquid density 4 Porous material impregnated with
56. trating to the inside of the product or as a result of service or modification by other than Ohaus In lieu of a properly returned war ranty 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 damages As warranty legislation differs from state to state and country fo country please contact Ohaus or your local Ohaus dealer for further details 80104130 indd 47 11 7 2006 9 22 46 AM 80104130 indd 48 OHAUS Ohaus Corporation 19A Chapin Road P O Box 2033 Pine Brook NJ 07058 USA Tel 973 377 9000 Fax 973 944 7177 With offices worldwide www ohaus com Ohaus Corporation 2006 all rights reserved 8 0 1 0 4 1 3 0 P N 80104130 A Printed in Switzerland 11 7 2006 9 22 46 AM
57. ts The Discovery balance has built in Advanced AutoCal which can calibrate the balance automatically and does not require calibration masses If preferred the balance can be manually calibrated with external masses Have the appropriate calibration masses available before beginning calibration Refer to Section 3 7 2 for masses and calibration procedure IMPORTANT Balance should acclimate to its new surroundings for at least 8 hours Balance electronics should be warmed up for 2 hours prior to use 80104130 indd 5 11 7 2006 9 22 30 AM EN 6 80104130 indd 6 Ohaus Discovery 11 7 2006 9 22 30 AM _ TER o ME Ohaus Discovery EN 7 3 OPERATION 3 1 Overview of Controls Display Functions o o 8 10 e ela o a D a D 15 a O 9 8 B A o iis 9 11 12 13 BOTTOM VIEW REAR VIEW TABLE 3 1 DISCOVERY CONTROL FUNCTIONS Pan 80104130 indd 7 D 11 7 2006 9 22 30 AM 3 1 Overview of Controls amp Display Functions Cont 80104130 indd 8 Digital Display Window TABLE 3 2 DISCOVERY DISPLAY FUNCTIONS emo not iE e seco c14 Soren Day 8 Brutoindicator S 9 Toreindicator S Ohaus Discovery 11 7 2006 9 22 31 AM Ohaus Discovery 3 2 Button Functions Four multifunction buttons and two tare bu
58. ttons are used to to operate the balance and navigate the menus The function of each button is shown below Primary Function Secondary Function MN 80104130 indd 9 Discovery On Zero Off Yes No Tare e Performs tare operation On Zero e f balance is off turns balance on e Zeros balance Off e Turns balance off Yes e Accepts the current blinking setting on the display e When editing in the alpha numeric field increments to the next digit Print e Sends the current display value to the serial interface Unit e Change weighing unit Press and hold will scroll through units No e Rejects the current setting blinking on the display e Increments a value being entered Function e Operation is depen dent on the applica tion mode Mode e Change application mode Back e Reverts back to the previous menu item e Decrements a value being entered EN 9 Press and Release Press and Hold Menu Function Cal e Initiates calibration function Menu e Press and hold allows entering the menu Exit e Immediately exits menu mode e Aborts calibration in progress 11 7 2006 9 22 31 AM ME E EN 10 Ohaus Discovery 3 3 Using the Button Control Functions 3 3 1 Setting the Balance to Zero Remove the load from the pan and press the Zero button to set the display to zero When the weighing pan is empty the Center of Zero indicator tu
59. up SETUP Legal Trade On Off Auto Tare On Off Auto Off Off 1 2 5 min Back Light On Off End Setup Legal Trade When set On the balance operates in compliance with Weights and Measures regulations When the LEGAL TRADE menu item setting is set to ON the following conditions apply e The CALIBRATION menu is hidden e The LEGAL TRADE menu item is hidden e The AUTO ZERO menu item setting is set fo 0 5d and locked e The OUTPUT WHEN STABLE menu item setting is set to ON and locked e The CONTINUOUS setting in the AUTO PRINT menu item is hidden Auto Tare When set On the balance will automatically tare the first item placed on the pan Auto Off When set to 1 2 or 5 minutes the balance will turn off in the selected time interval if there has been no activity Set to OFF for continuous operation Backlight When set On display is illuminated at all times with balance on End Setup Press the Yes button to advance to the Readout submenu Press the No button to return to the LEGAL TRADE menu item 3 7 4 Readout READOUT Auto Zero Off 5d Id 2d 5d Filter Low Medium High Gross Ind 6 B Off End Read Auto Zero Allows setting the balance auto zero level setting Off 5 1 2 or 5 divisions Balance maintains zero until threshold is exceeded Filter Allows setting the balance filter level Low Medium High Compen sates for vibration or excessive air currents 80104130 indd 35 Gross Ind Allows

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User Manual - Affordable Scales & Balances