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EN-24

Ohaus Discovery

3.5.9 Density (Cont.

The balance now indicates 0.0000 g IN AIR (blinking). Place the sample on the support and
weigh in air, 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.

D. Density of Solid using Auxilary Liquid (Cont.)

E. Density of Porous Material Using Oil

The following should be turned On in the Setup Menu: POROUS, WATER.

Press 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.

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.

80104130.indd Sec1:24

2011/11/25 9:08:37

Содержание DV114C

Страница 1: ...Ohaus Discovery Balances Instruction Manual ...

Страница 2: ......

Страница 3: ...ic compatibility 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 EN45501 1992 Ted Xia President Ohaus Corporation Pine Brook NJ USA Urs Müller General Manager Ohaus Europe Greifensee Switzerland Applies only to certified non automatic weighing instrum...

Страница 4: ... 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...

Страница 5: ...3 3 Using the Button Control Functions EN 10 3 3 1 Setting the Balance to Zero EN 10 3 3 2 Taring EN 10 3 3 3 Changing Units of Measure EN 10 3 3 4 Changing Application Modes EN 10 3 3 5 Printing Data EN 10 3 3 6 Calibration EN 10 3 4 Menu EN 11 3 4 1 Menu Structure EN 11 3 4 2 Menu Navigation EN 12 3 4 3 Changing Settings EN 12 3 5 Application Modes EN 13 3 5 1 Weighing EN 13 3 5 2 Parts Counting...

Страница 6: ...8 3 7 11 Reset EN 38 3 7 12 Lockout EN 39 3 7 13 End EN 39 3 8 Sealing Access to the Balance Settings EN 40 3 9 Printing Data EN 40 4 MAINTENANCE EN 41 4 1 Calibration EN 41 4 2 Cleaning EN 41 4 3 Troubleshooting EN 41 4 4 Service Information EN 42 4 5 Parts EN 42 4 6 Accessories EN 42 5 TECHNICAL DATA EN 43 5 1 Drawings EN 43 5 2 Specifications EN 44 5 3 Capacity x Readability EN 45 5 4 Communica...

Страница 7: ...covery balances include many application modes Weighing Parts Counting Animal Weighing Check Weighing Percent Weighing Totalization Density G N T Pipette Calibration High Point Statistics Other Standard features include Two line backlit LCD In use cover RS232 interface Weigh below hook Automatic Internal Calibration Overload and Underload indicators Lock out switch safeguards pre set parameters Le...

Страница 8: ...hown in the illustration 2 Place the In Use cover on the front panel of the balance 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 accurat...

Страница 9: ... OFF is displayed then release the button 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 results 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 exte...

Страница 10: ...EN 6 Ohaus Discovery ...

Страница 11: ...LE 3 1 DISCOVERY CONTROL FUNCTIONS 1 Level Bubble 2 Pan 3 Wind Ring 4 Tare Buttons 5 On Zero Off Button 6 Print Unit Button 7 Function Mode Button 8 Calibrate Menu Button 9 Weigh Below Cover and Screw 10 Leveling Feet 11 Lockout Reset Switch 12 COM 1 Connector 13 Power Connector 1 2 3 4 5 6 7 8 9 10 11 12 13 4 ...

Страница 12: ...mary 7 Segment Display 2 Brackets 3 Units of Measurement 4 Memory Indicator 5 Pieces Indicator 6 Secondary 14 Segment Display 7 Gross Indicator 8 Brutto Indicator 9 Tare Indicator 10 Preset Tare Indicator 11 Net Indicator 12 Stability Indicator 13 Negative Indicator 14 Center of Zero Indicator TABLE 3 2 DISCOVERY DISPLAY FUNCTIONS ...

Страница 13: ...is depen dent on the applica tion mode Cal Initiates calibration function Secondary Function Off Turns balance off Unit Change weighing unit Press and hold will scroll through units Mode Change application mode Menu Press and hold allows entering the menu Menu Function Yes Accepts the current blinking setting on the display When editing in the alpha numeric field increments to the next digit No Re...

Страница 14: ...n 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 0 to 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 U...

Страница 15: ...mat 4LF Form Feed List End Print UNIT 3 7 6 mg g ct oz ozt GN dwt m t HK t SG t TW Custom End Unit MODE 3 7 5 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 GLP DATA 3 7 9 User ID Proj ID Time Date End GLP Data GLP PRINT 3 7 10 Time Balance ID User ID Project ID Differen...

Страница 16: ...he 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 ...

Страница 17: ...weighed on the pan to display the weight The example displays a 200 gram weight in grams unit of measure 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 blink...

Страница 18: ...shed reference weight Refer to 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 t...

Страница 19: ...e 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 Pla...

Страница 20: ... 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 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 ...

Страница 21: ... 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 blink...

Страница 22: ...ce density table for water at temperatures between 10ºC and 30ºC 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 befo...

Страница 23: ...Q A A B Q0 The balance allows direct determination of the buoyancy P P A B and consequently the above formula can be simplified Q A P Q0 Q Density of the solid A Weight of the solid in air B Weight of the solid in the auxiliary liquid Q0 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 Buoya...

Страница 24: ...emperature has a greater effect with liquids and causes density changes in the order of magnitude 0 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 th...

Страница 25: ...tes 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 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 oi...

Страница 26: ... 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 we...

Страница 27: ... displays the result in grams per centimeter g cc D Density of Solid using Auxilary Liquid The following menu items should be turned on SOLID AUXILIARY Press and hold Function button until MODE DENSITY 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 bu...

Страница 28: ...ndary 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 mate...

Страница 29: ...ton 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 ...

Страница 30: ...mber 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 in...

Страница 31: ...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 displa...

Страница 32: ... 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 to increment digit edit field and Back button to decrement ...

Страница 33: ...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 second...

Страница 34: ... Hook Installed Weigh Below Hook Table Support Weigh Below Protective Cover 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 ...

Страница 35: ...between 25 and 100 of the balance s capacity Cal Test Calibration test allows the stored calibration data to be tested against the current mass being used for the test Cal Adj AutoCal allows adjustment of the internal 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 Bef...

Страница 36: ...ce 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 after every 11 hours Span Calibration With the bala...

Страница 37: ...til 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 After 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 ...

Страница 38: ...t 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 requir...

Страница 39: ...menu Press the No button to return to the LEGAL TRADE menu item 3 7 4 Readout 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 READOUT Auto Zero Off 5d 1d 2d 5d Filter Low Medium High Gross Ind G ...

Страница 40: ...ance to the Unit sub menu Press No to return to Weigh 3 7 6 Unit The Unit sub menu is used to turn measuring units On or Off Defining Custom Unit Set Custom to ON in the Unit menu to 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 d...

Страница 41: ...dis played value when stability is achieved 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 Zero When set to Off the Auto print feature is disabled 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...

Страница 42: ...r 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 3 7 11 Reset RESET Setup RESET Readout RESET Mode RESET Unit RESET Print RESET RS232 RESET GLP Data RESET GLP Print RESET Lockout RESET Global RESET End Reset Setup Select Yes to return all Setup menu items to their factor...

Страница 43: ...ation Menu Setup Set On to lock the Setup Menu Readout Set 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 Reset Set On to lock the Reset Menu Lockset Set On to lock the menu settings in Lockout...

Страница 44: ...nd hold the recessed Lock Switch until a weight is displayed Sealing the Balance Lock Switch Access Location Rear of 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 Time is ON Bal ID 1234567 If GLP SET Balance ID is ON USE...

Страница 45: ...menu lock off LFT set to on Turn LFT off Unstable weight reading Eliminate vibration and drafts Cannot change Menu settings Submenu locked Unlock sub menu LFT set to on Turn LFT off Error 7 0 Unstable weight reading when defining the Eliminate vibration and drafts reference weight Error 8 1 Weight reading exceeds Power On Zero limit Clear pan Error 8 2 Weight reading below Power On Zero limit Put ...

Страница 46: ...gent For Service assistance or technical 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 Global Part Number Power Pack 100 240 Vac Cord set required for US 30006112 UK E...

Страница 47: ... power supply Storage temperature range 10 C to 70 C Voltage fluctuations 15 10 Power AC adapter To national standard as per list in Section 4 5 Balance power input 12 VAC 50 60Hz 1 0A Materials Base Housing Painted Aluminum Draft Shield Painted Aluminum Rear Cover Plastic Polyurethane Terminal ABS PC Blend Plastic Weighing Pan Stainless Steel In Use Display Cover PET Plastic Draftshield Doors Gla...

Страница 48: ... Integral Weigh Below Hook selectable Enviromental Settings Leveling indicator Tare Range To Capacity by Subtraction Stabilization Time s 4 8 12 5 Sensitivity Drift 10 30 C 2ppm C Operating Temperature Range 10 to 40 C 50 to 104 F Calibration Automatic internal and manual external Power Requirements External Adapter 100 120VAC 1A 220 240VAC 1A 50 60Hz Plug configuration for US Euro UK Japan and Au...

Страница 49: ... 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 displayed weight stable or unstable P Print di...

Страница 50: ...weighing Under Limit PTIME Print current time PDATE Print current date xAW Set AW Mode x A Automatic x S Semi Automatic x M Manual Command Function 5 4 1 Commands Cont 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 RS232 Connector External PRI...

Страница 51: ... been damaged by accident or misuse exposed to radioactive 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 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...

Страница 52: ...tion 7 Campus Drive Suite 310 Parsippany NJ 07054 USA Tel 973 377 9000 Fax 973 944 7177 With offices worldwide www ohaus com P N 80104130 C 2011 Ohaus Corporation all rights reserved Printed in Switzerland 80104130 ...

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