Unpacking and Setup:
Contents
1. 5 E SETO OSE EE E EEE E ETS A EE 5 Front Panel Controls editus a a 6 Audible Beep a esten eon ad e s t a 6 The ON OFF Button a meu addu dut atem 6 The PARE Button anna aee 6 The CAL EO dtes dub ta dem 6 The MENU Button lauena 6 The PRINT Button ak a Tete Gee blade ex 6 Balance Functions Eeat res 0 etes teer OE PUTET 7 Autocalibration To Calibrate the balance to an External Weight 7 Alternative Autocalibration To Calibrate the Balance to a Heavier External Weight 7 PCount Front Panel Parts Counting cccccecccesscesscesceeseeecesecseceaecsaecaeecaeeeaeeseesseesscesecaeenaececaecsaecsaecsaecaeecaeesseneseneceaeenaeceaecneeeeeenes 8 UnitS Unit OR RR 8 PC Prtr Computer and Printer Interface Function 9 Rate Selection nee e A t la t eet anu us 9 Filter Selections tn Ae M I o A eI Ht mu M ee E du 9 Auto 02. Pressing the TARE button at any time returns the display to zeros When a weighing that has been zeroed out is removed from the weighing pan a negative reading is displayed To return the display to zeros press the TARE button The CAL Button This button is used to activate the calibration function Calibration is fully discussed later in the manual The MENU Button The MENU button accesses all of the balance s functions except calibration Each time the MENU button is pressed one of the following functions is displayed e Pcount Parts counting e Units of weight selection e PC Prtr Computer or printer interface e bAudrt Baud rate selection e FiltEr Stability filter selection e Auto 0 Autozero To select one of these functions press the PRINT button when the desired function appears in the display Each of these functions is fully discussed later in the manual The PRINT Button Pressing the PRINT button sends the weight and unit of measure on the balance s display to a printer or computer via the RS 232 interface Note Scientech High Capacity balances have specific and different cable requirements for connecting to serial printers verses computers The cable specifications are discussed later in the RS 232 section of this manual The PRINT button is also used to select many of the options available from the balance s features menu Balance Functions and Features Autocalibration To Calibrate the Balance to
3. For example to program the balance through the computer to continuously send readings in carats proceed as follows Press the M key repeatedly until UnitS is displayed on the balance Press the E key to select UnitS Press the M key repeatedly until CArAt is displayed on the balance Press the E key to select CArAt Press the M key repeatedly until PC Prtr is displayed on the balance Press the E key to select PC Prtr Press the M key repeatedly until PC is displayed on the balance Press the E key to select PC The balance will now continuously send the weight in carats to the computer Troubleshooting Guide Note Many problems such as the balance remaining in the turn on sequence weird characters on the display or garbage on the display are caused by connecting the power supply to the balance incorrectly The proper procedure is to connect the round connector on the power supply cable to the balance then plug the power supply into the wall outlet Problem Possible Cause Possible Solution The display is blank Balance not turned on Press ON OFF switch Power cable not plugged in Press ON OFF switch No power from AC outlet Turn on circuit breaker Change AC outlets 1 appears in display Maximum capacity exceeded Reduce container weight Weigh sample in smaller increments Pan is not in place Insure pan is positioned properly 4 appears in display Balance is out of range Press Z
4. Suspend the sample and basket in water then press the CAL button A flashing S 20 is displayed until a stable reading is obtained then the density of the sample will be displayed 11 Press the MENU button to return to the normal weighing mode The balance will store the tare values until it is turned off To determine the specific gravity of another sample start at step 7 To reset the tare values start again at the beginning of the procedure Specific Gravity Determination Without the Optional SCHSG Program 1 Install a below balance weighing apparatus such as a wire hook including a pan suspended in a bowl of water Insure that the pan and the hanger do not touch any part of the bowl and all are totally submerged Then tare the balance 2 Place the sample to be tested on the balance pan and record the weight reading shown on the display You may use any unit of measure you desire 3 Place the same sample to be tested on the pan suspended in the bowl of water Make sure that the sample is completely submerged in the water and record the weight reading shown on the display 4 Subtract the reading in Step 3 from the reading in Step 2 5 Divide the reading in Step 2 by the number calculated in Step 4 The result is the SG of your sample EXAMPLE Reading in Step 2 6 50 Reading in Step 3 4 25 Subtraction 2 25 Division Step 5 6 50 2 25 2 89 specific gravity Options Optional RS 232 Printers Note Printers must be s
5. liquid into the graduated flask Divide the displayed weight in grams by the volume of the liquid The result is the mass per unit volume of the liquid in g cc Below Balance Weighing Note Please use care when using below balance weighing The balance s suspension can be damaged if the below balance weighing hanger is subjected to too much force or a sidewards shock For applications requiring suspension of weighings below the balance a hook is provided To use below balance weighing refer to figure 2 and proceed as follows e Gently turn the balance on its side e Remove the hole plug e Mount the balance on a solid pedestal or surface with a hole under the balance to allow access to the hook While using the below balance weighing feature all other functions of the balance operate normally The balance is capable of weighing both above and below simultaneously provided the capacity of the unit is not exceeded The below balance weighing feature is ideal for determining specific gravity Specific gravity is the ratio of the mass of a body to the mass of an equal volume of water Every mineral has its own specific gravity SG A list may be found in any Handbook of Chemistry and Physics Specific gravity will classify or authenticate a substance For instance a diamond s SG is 3 50 3 53 while quartz s is 2 65 The following section discusses how the below balance weighing feature can be used to determine specific gravity Specific Gr
6. 50 x 4 00 32 4cm x 31 75cm x 10 1cm Weight Table of Capacities and Resolutions 21 4 pounds 9 7Kg 24 5 pounds 11 1Kg Unit of measure SHCI2 SCHI6 SCH20 SCH30 Grams 12 200 x 0 1 16 250 x 0 1 20 500 x 0 1 30 500 x 0 1 Carats 61 000 x 0 05 81 300 x 0 05 102 500 x 0 05 152 500 x 0 05 Ounces 430 x 0 001 5770 x 0 001 720 x 0 001 1 075 x 0 001 Pounds 27 x 0 0001 35 x 0 0001 45 x 0 0001 67 x 0 0001 Pennyweights 7850 x 0 01 10 450 x 0 01 13 170 x 0 01 19 600 x 0 01 Troy Ounces 392 x 0 001 520 x 0 001 658 x 0 001 980 x 0 001 Grains 188 x 0 001 250 x 0 001 315 x 0 001 470 x 0 001 Hong Kong Taels 325 x 0 001 432 x 0 001 547 x 0 001 814 x 0 001 Singapore Taels 322 x 0 001 430 x 0 001 541 x 0 001 806 x 0 001 R O C Taels 324 x 0 001 433 x 0 001 545 x 0 001 813 x 0 001 Momme 3 250 x 0 01 4 330 x 0 01 5 460 x 0 01 8 133 x 0 01 Limited Warranty All Scientech High Capacity Series Electronic Balances and their accessories are warranted against defects in materials and workmanship two 2 years from the date of delivery During the warranty period Scientech will repair or at its option replace at no charge components that prove to be defective The equipment must be returned shipping prepaid to Scientech s product service facility This limited warranty does not apply if the equipment is damaged by accident or misuse or as a result of service or modification by other than a
7. Auto Zero Tr cking iuis er iet iet de e E ete Eee ie ede ede e ede reete ee eee re ie eto 9 Density Determination EG EE ERE ER Er i ne a Ee P ee e ee ee eeu Eee vie deed Ue edet 10 Below Balance Weighing scie eee dee eee ie iet deb 10 Specific Gravity Determin tion i esit eset tct etie eve deese eite p ice eei a de 10 Specific Gravity Determination Using the Optional SHCSG Program sssssssesssseseseeseeeeee enne eene nnne 10 Specific Gravity Determination Without the Optional SCHSG eene eene nennen nnne 11 ul 11 Optional RS 232 Printers reete eei edi iere de e ete ee v EE Re Er eee eer ERE 11 5 232 IRR ee eed oe hs ee eee en RS 11 5 232 Specifications eite oe coed ut pe la eee ere aeons aaa anes 11 RS 232 Cable Requirements for Connecting to a Computer 11 RS 232 Cable Requirements for Connecting to a Serial Printer esses eene trennen nnne erret enne 11 RS 232 Commarid Set from a Computet i sp lee ad eo E ei A eee les 12 Troubleshooting Guide ho se
8. Avenue Boulder CO 80303 U S A Disposal of Electrical and Electronic Equipment Scientech Inc recommends the following for disposal of electrical and electronic equipment 1 The best option is to reuse the equipment in its entirety 2 Where the equipment can not be reused in its entirety priority should be given to reuse of its subassemblies and components 3 Where reuse is not appropriate electrical and electronic equipment including batteries should be recycled according to local ordinances 4 Waste electrical and electronic equipment should never be mixed with municipal waste Notes Quick Setup Guide 1 UNPACK BALANCE 2 PLACE IN PROPER ENVIRONMENT 5 LEVEL BALANCE 5 TURN ON BALANCE Adjust 3 adjustable feet to level the balance by centering the LEVEL INDICATOR Press the ON OFF switch and make sure the balance goes through the following sequence SIENTEC HE 6 WARM UP 1 HR THEN CALIBRATE Calibration instructions in manua 4 CONNECT BALANCE TO ELECTRICAL OUTLET
9. xx BOULDER CO SZIENTECH MADE ITALY Figure 3 Rear view Turn the balance on Press the ON OFF button one time to turn the balance on and observe the following turn on sequence d Figure 4 Turn on sequence Allow the balance to warm up for at least 1 hour then follow the calibration instructions to calibrate the balance Good Measurement Practices As quoted from the Mass Standards Handbook by Troemner 3 015BKT rev 1 03 There are numerous steps that one can take in order to improve the quality of a mass measurement system However they usually fall within three main categories the equipment the environment and the operator If even one of these areas is neglected it can have a dramatic negative impact on your results Although these suggestions are not meant to be all encompassing or all inclusive the improvements that can be made following these simple guidelines are extraordinary Equipment 1 Select weights that have a tolerance that is one third or better than the accuracy you require for your application This way the error of the weight will not dramatically impact the quality of your measurements The equipment must be of sufficient readability to calibrate or measure the weight or sample under test The balance should be placed on a stable platform free from the effects of vibration The most common type of setup involves placing the instrument onto a balance table that is constructed of marble
10. ERO switch The display is unstable Drafts air currents are present Install windscreen relocate balance Vibrations are present Tsolate balance from vibration relocate balance Select a different filter setting Weight readings are incorrect Balance is out of calibration Balance is not level Display was not zeroed before weight was placed on pan Object being weighed is not fully on weighing pan and touching the side of balance or case top Unit of weight selection is incorrect Recalibrate balance Level balance Press ZERO switch before weighing Reposition object Select proper weighing mode Error appears in display Procedural error Review procedure in manual and try again CE Mark All Scientech High Capacity Electronic Balances carry the CE Mark SHC 12 Specifications for SHC High Capacity Balances SHC 16 Single Range SHC 20 SHC 30 16 Kg 20 Kg 0 1 gram 0 16 Kg 0 20 Kg 0 2 g standard deviation Housing WxDxH 0 29 grams carats ounces pounds pennyweights troy ounces grains Hong Kong taels Singapore taels R O C taels RS 232 bidirectional interface is standard Baud rates are 1200 2400 4800 and 9600 Rectangular 12 5 x 8 5 31 75cm x 21 6cm 50 F to 86 F 10 C to 30 C Remote adapter for 120 Volts 50Hz 60 Hz 10 Remote adapter for 230 Volts 50Hz or 60 Hz x 10 12 75 x 12
11. PN11764A SCIENTECH High Capacity Series Electronic Balance Setup and Operating Procedures Thank you for choosing Scientech High Capacity Electronic Balance Scientech 1509001 2000 registered company and its employees are pleased to provide you with a balance designed and manufactured for years of reliable service The attractive quality of Scientech balances has been demonstrated by being certified to carry the CE mark of conformity Please read this manual completely before using your balance This information will enable you to fully utilize your balance and should be located nearby to be used as a quick reference guide The balance is intended to be used only in the manner outlined in this manual Misuse of the balance may cause product failure Table of Contents U packing and eme ema e 3 Choose the Proper Enviroriment 2 t ERN RE Ires O E TE TENER TUR 3 IE durable 4 Install the Weighing Pan iere ett 4 oritiect to an Blectrical Outlet arrori tr IR RR TRE RT ERE Te EN EE 4 balance e 4 Good Me s teme t Practices D 5 2 5 eS tete seu T Nette i eee e rotes evite tei 5 EnvitonmEnt oroo
12. Scientech service facility The foregoing warranty 1s in lieu of all other warranties expressed or implied including but not limited to any implied warranty of merchantability fitness or adequacy for any particular purpose or use Scientech Inc shall not be liable for any special incidental or consequential damages whether in contract tort or otherwise Returned Goods Procedure Should it become necessary to return any item to Scientech for any reason please contact our Product Service Department at 800 525 0522 or 303 444 1361 or Fax 303 444 9229 or E mail inst scientech inc com When you contact us please be ready to provide the model number serial number and a description of the problem Frequently we can provide self help information that will eliminate the need for returning the unit If equipment return is required please pack the items in the original box and packing material As an alternate place equipment in a snug fitting box then pack that box in a larger box with at least four inches of packing material between the two boxes Scientech does not assume responsibility for under packed items Please include the name and phone number of the person we should contact regarding repair question s Normally products are repaired and shipped within 5 working days after their arrival at the product service facility This is an average time and could vary depending on the workload Shipping Address Scientech Inc 5649 Arapahoe
13. an External Weight This procedure calibrates your balance to an external calibration weight Note For correct calibration weight refer to specification chart in the back of the manual Note The balance should be warmed up for at least one 1 hour prior to calibration and leveled according to the Unpacking and Setup section Note Perform autocalibration every time you move your balance Calibrate the balance using a recently certified external calibration weight Metrology handbooks state that the calibration weight utilized to calibrate a balance should have a tolerance no larger than the readability of the balance divided by 3 Therefore a 0 033g tolerance weight or better is required User Action Balance Response 1 Remove any containers or weighing samples so Zeros are displayed that nothing is on the weighing pan then press the TARE button 2 Press the CAL button A series of dashes is displayed followed by the flashing calibration weight and grams Gr annunciator 3 Place the flashing weight in the center of the The weight stops flashing and a solid weight and grams annunciator Gr weighing pan are displayed After approximately 10 seconds the balance will beep and display the calibration weight including decimal places The balance is now calibrated and in the normal weighing mode 4 Remove the calibration weight The display returns to zeros Alternative Autocalibration To Cal
14. avity Determination An optional specific gravity determination program SHCSG is available for all High Capacity Series balances This option must be purchased and installed when the balance is purchased The SCHSG program is installed in place of the front panel parts counting function High Capacity Series balances can have either the specific gravity determination program of front panel parts counting but not both Specific Gravity Determination Using the Optional SHCSG Program 1 Remove all objects from the weighing pan and press TARE button 0 0 will be displayed Suspend the empty basket from the below balance hook then press the TARE button Flashing dashes will be displayed until a stable reading is obtained then 0 0 will be displayed 3 Press the MENU button so dEnS is displayed 4 Press the TARE button t 2 is displayed 5 Suspend the empty basket from the below balance hook in water then press the TARE button Flashing dashes will be displayed until a stable reading is obtained then a negative reading will be displayed 6 Remove the empty basket from the water 7 Press the MENU button so dEnS is displayed 8 Press the CAL button so S Air is displayed 9 Load the sample into the empty basket then suspend the basket from the below balance weighing hook Press the CAL button A flashing S Air is displayed until a stable reading is obtained The balance then beeps and S 2 is displayed 10
15. ement results Changes in temperature pressure and humidity affect balance performance and weight stability Ideal room conditions are 20 C with a relative humidity between 45 and 60 Fluctuations in temperature should not exceed 1 C per hour Humidity fluctuations should not exceed 10 per hour Balances should not be placed in close proximity to anything that shakes vibrates or stirs violently Avoid placing your equipment near centrifuges vortexers or shakers Do not place your balance and or scale near anything that generates heat Heat will cause the balance chamber to warm and due to the effects of the thermal expansion introduce large errors into your measurement Do not place the balance near a window Sunlight can penetrate the window warm the balance chamber at different rates during the day and affect the quality of your work Avoid placing the balance near sources of drafts extreme air currents or near air conditioning vents These positions can cause your readings to be unstable and can dramatically cool the balance chamber when the air conditioning system begins to run The measurement environment should be clean and free of excessive contaminants Contaminants such as dirt and grease can adversely affect the weight of an object Operator 1 Never touch a weight with your bare hands Oils and contaminants from your hand will be transferred to the weight and introduce a significant error It is recommended that all weigh
16. erial Contact Scientech for available printers RS 232 Interface Your balance is equipped with a bi directional RS 232 compatible interface The interface is uni directional balance send only when the balance is connected to a serial printer and bi directional when connected to a computer The RS 232 connector is a 9 pin D subminiature connector located on the balance rear panel See Figure 3 RS 232 Specifications Format 1200 2400 4800 and 9600 baud rate selectable Code ASCII Parity is not considered 8 data bits 1 start bit 1 stop bit Display Format First character Space or minus sign Second thru ninth characters Displayed weight or pieces number Tenth thru twelfth characters Unit of weight annunciator Thirteenth character Carriage return Fourteenth character Line feed RS 232 Cable Requirements for Connecting to a Computer Figure 6 Computer cable RS 232 Cable Requirements for Connecting to a Serial Printer Figure 7 Printer cable RS 232 Command Set from a Computer With the exception of the Alternative Calibration function described on page 7 all balance functions available through the balance s front panel are also available through RS 232 The command set is shown below Balance Function Computer Keyboard ASCII Code Location in Manual Entry TARE T H54 Page 6 CAL calibrate H43 Page 6 PRINT send or select E H45 Page 6 MENU M H4D Page 6 ON OFF H4F Page 6
17. ibrate the Balance to an Alternate External Weight The balance can also be calibrated with an alternate heavier weight than is used in the standard Cal function described above This alternative calibration function is done as follows User Action Balance Response 1 Remove any containers or weighing samples so Zeros are displayed that nothing is on the weighing pan then press the TARE button 2 Press and hold the CAL button until the beep A series of dashes is displayed followed by a flashing LoAd stops then release the button 3 Place one of the alternate calibration weights A solid LoAd is displayed listed in the specification table on page 13 in the center of the weighing pan After approximately 10 seconds the balance will beep and display the calibration weight including decimal places The balance is now calibrated and in the normal weighing mode 4 Remove the calibration weight The display returns to zeros If the calibration process is disturbed or compromised by environmental noise such as vibration or air currents or by a procedural problem Error will be displayed and the balance will return to the normal weighing mode Remove any weight from the weighing pan and start again PCount Front Panel Parts Counting Front panel parts counting is a standard feature of the High Capacity Series balances determination function SHCSG is purchased it is installed balances can ha
18. ividual sample weight is acceptable but Add is displayed the sample size 1s too small 11 Place additional samples in the container and press If the sample size is large enough the number of pieces is displayed If the PRINT button not Add will be displayed 12 Repeat step 11 until the sample size is large enough The number of pieces is displayed 13 To update the sample size at any time place any The balance will display the number of samples for approximately 10 quantity up to 255 pieces into the container and seconds then display a series of W s and will beep wait approximately 10 seconds The sample size has now been updated to the displayed quantity 14 To see the actual weight of the samples in the The weight of the samples and a series of W s is displayed container press the MENU button 15 To return to parts counting press the MENU button The number of pieces is displayed 16 To exit the parts counting function press the The balance returns to the normal weighing mode ON OFF button UnitS Unit of Weight Selection To change the units of measure proceed as follows e Press the PRINT button to select this function GrAM Grams CArAt Carats o OUncE Ounces o Pound Pounds o Penn Pennyweights o OUncEtr Troy ounces o GrAin Grains tAELHon Hong Kong taels o tAELSGP Singapore taels tAELroc R O C taels o MoMME Momme Repeatedly press the MENU button until Uni
19. nd vibration and not in direct sunlight The surface should not be magnetic and should be located away from doors windows heaters air conditioners and fans Level the Balance The balance has one fixed foot and three adjustable feet which are used to level the balance by centering the bubble in the level indicator Refer to figure 2 The level indicator is located on the back of the balance Make sure the fixed foot is pressed down against the bench top and use the three adjustable feet to level the balance RESS Figure 2 Bottom and top views Install the Weighing Pan Remove the protective plastic coating from the weighing pan and place the pan on top of the balance Connect to an Electrical Outlet The balance is supplied with either a 120V or 220V remote power supply Before making any connections verify that the power VAC requirement shown on the remote power supply is compatible with the AC power outlet to which the balance will be connected First plug the power supply s connector into the balance s rear panel receptacle Then plug the power supply into the AC outlet The balance will automatically turn on and go through a self check sequence During the self check the balance s programming and display segments are verified When the self check is complete the balance will remain in a Stand By mode which is designated by a single dot in the lower right corner of the display m MODEL NO S SERIAL xx x
20. or granite Never use a balance or scale as soon as it is turned on plugged in The internal electronic components need to stabilize and warm up for at least 24 hours once the equipment has been energized Troemner recommends that you leave this instrument plugged in twenty four hours a day seven days a week Never use a balance that has been idle for several hours without first exercising it and calibrating it A balance is exercised by repeatedly placing and removing weights from the balance pan We recommend that this be done at least ten times each with a weight that is 100 of the max capacity of the balance After exercising the balance should be calibrated If these two techniques are consistently employed a noticeable improvement will result in both linearity and stability of the measurement When weights are not in use store them in the case in which they were supplied If the weights were not supplied with a case either purchase a case or use a clean container to protect the surfaces This will keep airborne particles from getting on your weights between uses Weights should be in thermal equilibrium with the balance so store weights near your balance Another option is to leave calibration masses commonly used inside the weighing chamber when not in use This assures your weights are in thermal equilibrium with the balance producing a better measurement Environment 1 The more stable your environment the better your measur
21. s Muse OE A een se 12 CE Mark tii cli wie 12 Specifications for SHC High Capacity Balances o E irren nnne nien 13 Table of Capaeities and Resol tiOns esee dece eue t le eh ws RR eee eo ea 13 Bruni BEP dole ee wen oe eine on hin ee eee a oe eee 14 Returtied Goods 14 Disposal of Electrical and Electronic Equipment sissano senise e E EEE STE EEE E E EEEE ETET 14 E E E E E E E E A E E AEE E ESE 15 Quick Setup Guide rpari evn E EEE K EEE EEE EE E E S E a sea 16 Unpacking and Setup The top weighing pan remote power supply instruction manual and any optional accessories are packed in a cardboard box that is located on top of the balance The balance is suspended in a separate support to protect it from shock during shipping and handling Save and reuse all packing material for future damage free shipments ho Uem Figure 1 Exploded view Choose the Proper Environment The environment in which your balance is used is very important Air movement temperature changes vibrations direct sunlight etc influences the performance of high precision balances Therefore place your balance on a solid sturdy surface that is free of air currents a
22. tS is displayed Press the MENU button repeatedly to scroll through the available units of measure Designated by a V on the display Designated by a V on the display Designated by a V on the display Designated by a V on the display Press the PRINT button to select the desired unit of weight and return the balance to its normal weighing mode PC Prtr Computer and Printer Interface Function This function is used to set the format of the data sent through the balance s RS 232 port when the PRINT button is pressed or when a print command is issue by an attached computer e Repeatedly press the MENU button until PC Prtr is displayed e Press the PRINT button to select this function Press the MENU button repeatedly to scroll through the available options o PrintEr Displayed weight and units annunciator Prt tIM Time date displayed weight and units annunciator PrtGLP GLP data displayed weight and units annunciator The balance begins transmitting the displayed weight and units annunciator continuously e Press the PRINT button to select the desired option and return the balance to its normal weighing mode Note Prt tIM and Prt GLP are only available if printer Model Custom DP24E4 is used Note The speed of the continuous transmission is dependent on the baud rate selected If continuous send is selected the balance will continue to send data until this function is turned off by using the preceding procedure
23. to select one of the other formats Note When the balance s display shows overload 4 or underload L 1 over and under respectively will be printed when in the continuous send PC mode The send command is ignored in any of the other 3 modes bAud rt Baud Rate Selection The balance is delivered in 9600 baud To change the baud rate of the balance s serial port proceed as follows e Repeatedly press the MENU button until bAud rt is displayed e Press the PRINT button to select this function Press the MENU button repeatedly to scroll through the available baud rates 1200 2400 4800 and 9600 e Press the PRINT button to select the desired speed and return the balance to its normal weighing mode Note The baud rate of the balance must match the baud rate of the printer or computer connected to the balance s serial port FiltEr Filter Selection All balances are equipped with three user selectable vibration filters which reduce nervous readings in varying weighing conditions especially vibrations The balance is delivered in FiltEr 3 To change the filter setting proceed as follows e Repeatedly press the MENU button until FiltEr is displayed e Press the PRINT button to select this function Press the MENU button repeatedly to scroll through the 3 available options o FitErl Least aggressive filtering for use in very stable environmental conditions o FiltEr2 More aggressi
24. ts be manipulated with gloved hands or forceps The two types of gloves that are commonly used and accepted are either latex powderless or cotton Avoid any metal to metal contact when handling or storing weights This will cause scratches that may introduce error All weight forceps and weight lifters should be either nonmetallic plastic or wood or if metal covered with a soft protective coating or material to avoid scratches Place the weight or sample near the center of the balance pan A small offset from center can have a pronounced effect and introduce undue variation Take special care not to breathe onto the weight or into the balance chamber Back away from the instrument This will prevent any thermal transfer of heat from your breath or body to the balance the weight or the sample Time your measurements Consistent sample times will provide more consistent measurement Front Panel Controls ON Figure 5 Balance front panel Audible Beep Each time any of the front panel buttons is activated the balance returns an audible beep The ON OFF Button When the balance is in Stand By mode pressing the ON OFF button will start the turn on sequence shown in Figure 4 When the balance is on pressing the ON OFF button will place the balance in Stand By mode with only a single dot in the lower right hand corner of the display The ON OFF button is also used to exit the Parts Counting function The TARE Button
25. ve either front panel parts counting or specific However if an optional specific gravity in place of the front panel parts counting function High Capacity Series gravity determination but not both User Action Balance Response 1 Remove any weighing samples or containers from Zeros are displayed the weighing pan then press the TARE button 2 Place the empty container in the center of the Zeros displayed weighing pan then press the TARE button 3 Press the MENU button repeatedly until PCount is PCount is displayed displayed 4 Press the PRINT button nc 10 is displayed This indicates the number of samples required 5 Press the MENU button repeatedly to change the The options of nc 10 nc 25 nc 50 nc 100 and MAnuAL are displayed sample size 6 Press the PRINT button to select the desired sample A series of dashes followed by LoAd and the required number of size samples are displayed 7 Place the required number of samples in the container LoAd will flash while the balance is processing the weight then the and press the PRINT button number of pieces is displayed 8 Load the parts to be counted into the container The balance displays the number of parts 9 If the weight of the individual samples is too light Error is displayed These parts must be counted on a balance with more for the balance resolution 10 If the ind
26. ve filtering for less stable conditions o FiltEr3 Most aggressive filtering for least stable conditions e Press the PRINT button to select the desired setting and return the balance to its normal weighing mode Auto 0 Auto Zero Tracking Auto zero tracking is a software function that enables the balance to keep the display at a 0 0 reading It prevents minor environmental noise from causing the balance to drift away from a 0 0 reading The balance is delivered with auto zero turned on The auto zero tracking function can be turned on or off as follows e Repeatedly press the MENU button until Auto 0 is displayed e Press the PRINT button to select this function e Press the MENU button toggle between on and OFF e Press the PRINT button to select the desired setting and return the balance to its normal weighing mode Density Determination Scientech does not offer a density determination kit nor do you need one to determine density Density is mass grams per unit volume cubic centimeters In order to determine density of a solid place a graduated flask with a known volume of water on the pan of the balance tare the balance and then place the solid in the flask of water Divide the displayed weight in grams by the increased volume of water The result is the mass per unit volume of the solid in g cc To determine the density of a liquid place an empty graduated flask on the balance weighing pan tare the balance then pour the
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