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1. 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 27 Quick Setup Guide 1 UNPACK BALANCE 3 LEVEL BALANCE Adjust the FRONT FEET to level the balance by centering the T LEVEL INDICATOR aE pe 7 A 2 Thumbwheel aaa WENING turns but stays z in the same position f Ss aie against bottom of case J qt The shaft moves in and out but does not rotate DA Rotating thumbwheel s as shown causes Shaft to extend out of case and RAISES front of balance 1 Remove the paper tag 2 Turn the knob in the direction shown until finger tight See page 4 of the manual 2 PLACE IN PROPER ENVIRONMENT Cae UK 1 Plug in firs 5 CONNECT BALANCE TO ELECTRICAL OUTLET 28 6 TURN ON BALANCE Press the ON OFF switch and make sure the balance goes through the following sequence 4 UNLOCK CLAMPING SCREW 0 100 7 WARM UP 1 HR THEN CALIBRATE Calibration instructions in manual nd
2. so that nothing is on the stainless steel pan Then press the ZERO button 2 Press the FUNCTION button or MODE and Display cycles repeatedly through PCS HI OK LO CAL1 CAL2 T and RANGE buttons simultaneously for dual range models 3 Press the MODE button when CALI appears CALI and a flashing 0 are displayed 4 Wait 10 seconds Then press the MODE The display shows a flashing CAL This means that the automatic calibration button procedure using the internal weight has begun The procedure will take about 30 to 90 seconds When the procedure is complete the display will blank and then return to its normal weighing mode This means that your balance is now calibrated If the calibration cannot be completed due to air currents an unstable environment vibration an incorrect weight or any other reason a brief ERR message will appear on the display and the balance will return to Step 3 8 Autocalibration To Calibrate the Balance and its Motorized Internal Calibration Weight to an External Weight This procedure is only for SA and SM balances with the suffix IW after the model number which means a motorized internal calibration weight is installed This procedure first calibrates the balance to an external calibration weight then recalibrates the internal calibration weight to the external weight This procedure can also be used to only calibrate the balance to the external weight wit
3. SAVEd OK is displayed followed by the chosen setting ZERO button and OK 6 PARITY SELECTION PA nonE is default Press the MODE button The current parity setting PA EVEn PA odd or PA nonE and OK are displayed Press the SEND button to choose between EVEn odd or nonE Then SAVEd OK is displayed followed by the chosen setting press the ZERO button and OK 7 AUTO SEND SELECTION AS oFF is default AS on means the balance will automatically send the display contents over the RS 232 interface at the selected time interval placed into register 89 This time interval may be inputted via the optional PDA or through Type 4 RS 232 commands Refer to these sections for instructions A time and date stamp may also be sent at the same time see Type 4 RS 232 Commands section The auto send selection is not functional if the send when stable command is on see Selectable Filter section Press the MODE button The current auto send setting AS oFF or AS on ond OK are displayed Press the SEND button to choose between on or off Then press the SAVEd OK is displayed followed by the chosen setting ZERO button and OK 8 CONTINUOUS SEND SELECTION CS oFF is default CS on means the balance will automatically send the weight reading over the RS 232 interface at the baud rate selected Display readings are updated every 200 milliseconds The continuous send selection is not functional if the send when stable command is on see Selectabl
4. display must be non zero when this command is issued If the display is zero a 3 second Err message is displayed and the balance returns to its normal weighing mode CLEAR exits the percent mode and un defines the percent register Decimal number ENTER integer _PIECES CR None Accepts the decimal number as a weight in last front panel units per integer pieces If the balance is not in PCS mode it goes into PCS mode using the decimal number the integer as the weight If used when the balance is already in PCS mode the display digits are blanked for about 1 second while the PCS and last front panel units annunciators are lit The balance then resumes normal PCS operation using the decimal number the integer as the unit weight register REG XXX register Puts the recalled register contents into the specified mode number RCL _ CONVERT CAL contents MULT register and enters that mode PIECES CR TAVG CR None Clears the TBAR registers and enters the TBAR mode RESET _TAVG CR None Clears the TBAR registers If the balance is in the TBAR mode the process keeps running XAVG CR None Accumulates the current weight in the XBAR registers RESET XAVG CR None Clears the XBAR registers GLP CR Sends GLP header Puts balance in the GLP mode XAVG CR Sends weight while in GLP Accumulates the current weight in the XBAR registers RCL XAVG CR Sends statistics and signatur
5. 10 of the balance s total capacity As 10 of the balance s capacity is used the first segment will illuminate As 20 of the balance s capacity is reached the second segment will light and so on Selectable Filters Stability Indicator and Send When Stable All balances are equipped with three user selectable vibration filters which reduce nervous readings in varying weighing conditions The balance was delivered to you set in the high filtering mode Fil HI This is the most aggressive filtering mode Normal filtering Fil nor and low filtering Fil Lo can be selected for quieter conditions and faster response The stability indicator OK is illuminated when the balance has determined that all readings are within the stability parameters as selected by the user The balance was delivered to you with stability set at 2 display counts which is represented by a 2 in step 5 below You may select stability from 1 to 10 display counts manually in step 5 below If the weight readings are outside the acceptable limits the stability indicator will not light The stability indicator can be disabled if desired Also the send when stable command sends the weight reading over the RS 232 interface whenever the OK light illuminates The balance was delivered to you with the send when stable command OFF When it is ON the auto and continuous send commands see RS 232 Front Panel Configuration for details are not functional To enter t
6. 4 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 5 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 6 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 measurem
7. LF 2 second delay standard deviation current units SDEV CR LF 2 second delay relative standard deviation COV CR LF Sends the results of a standard deviation run The TBAR mode if in use is temporarily suspended while this process is going on Type 4 Commands Clock Calendar Functions Command Response Purpose six digit integer _ENTER_100 STORE CR Sets the calendar function if available to the specified date The date must be specified in the MMDDYY format and no delimiters 100 RCL CR REG 100 MM DD YY DATE CR LF Returns the date six digit integer _ENTER_101_ STORE CR Sets the clock function if available to the specified time The time must be specified in the HHMMSS format using military 24 hour time format 101 RCL CR REG 101 HH MM SS TIME CR LF Returns the current time using military 24 hour time format once for each request 1 to 6 digit integer _ENTER 89 STORE CR Sets the auto send register to the specified send time interval For the auto send feature to be operational you must set the auto send selection to ON see RS 232 Front Panel Configuration section for details The format used is HHMMSS with no delimiters For instance to set the auto send interval to 5 minutes and 25 seconds you would send this command string 525 ENTER 89 STORE CR Also you must have the auto Send selection set to ON before the auto Send wil
8. Stores the desired precision of the displayed weight for T mode Type 3 Commands Balance Output Functions Command Response Purpose SEND CR See the RS 232 Balance Message Formats section Returns the contents of the display register register number RCL CR REG XXX register contents current units or MULT CR LF Sends the contents of the specified register in the current units if it is additive or with the designator MULT if it is multiplicative An unflagged number is sent with no designator An undefined register returns a with a CR LF RCL TARE CR REG 091 TARE register contents current units CR LR Return the TARE register s contents RCL CONVERT CAL REG XXX contents of specified register MULT CR LF Returns indicated register contents if in that mode If not in that mode then a with a CR LF is returned RCL_PCS CR REG XXX contents of pieces register last FP units pc CR LF Returns pieces register contents expressed as last front panel units pc if in that mode If not in that mode then a with a CR LF is returned register number RCL _TARE CR REG XXX register contents current units CR LF Adds the specified register contents to the TARE register RCL XAVG CR average weight current units AVX CR LF 2 second delay number of samples taken CR
9. be warmed up for at least one 1 hour prior to calibration and leveled according to the 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 SM models need a 4 0 0033mg tolerance weight or better SA models need a 0 033mg tolerance weight or better SP models need a 0 33mg tolerance weight or better SL models need a 3 3mg tolerance weight or better and SG models need a 33mg tolerance weight or better In addition these same handbooks recommend that all balances be calibrated using an external certified calibration weight even if the balance has an internal calibration weight User Action Balance Response 1 Remove any containers or weighing samples Zeros are displayed so that nothing is on the weighing pan then press the ZERO button 2 Press the RANGE FUNCTION button or Balance display cycles repeatedly through PCS HI OK LO CAL 1 CAL 2 MODE and RANGE buttons simultaneously F and for dual range balance models 3 Press the MODE button when CAL 1 appears CAL 1 and a flashing 0 are displayed 4 Wait 10 seconds for the balance to stabilize The display stops flashing CAL 1 and a solid O are displayed In the
10. different models to choose from Please contact Scientech or one of our representatives for more information A comprehensive manual is included with each printer when purchased All printers are set for a 9600 baud rate To change this setting please see the printer manual and the RS 232 Front Panel Configuration section The balance display contents can be sent to the printer at any time by pressing the balance front panel SEND switch Balances only communicate with serial printers 13 RS 232 Interface Note Scientech balances are DTE computer devices If communicating to another DTE device ie computer a Scientech RS 232 cable PN10697 or normal null modem cable is required If you are communicating to a DCE device printer a serial cable is required Scientech offers a serial cable PN11367 for your convenience Your balance is equipped with a bi directional RS 232 compatible interface The interface is uni directional balance send only when the local control is set to ON To enable the bi directional interface set the local control to OFF see the RS 232 Front Panel Configuration section The RS 232 connector is a 9 pin D subminiature connector located on the balance rear panel The pin out and pin descriptions are shown in Figure 7 Figure 7 6 DSR 7 RTS 8 CTS IS EVALUATED 9 SEND EXTERNAL TTL SIGNAL IS IGNORED IS MARKING GROUND DTR IS GENERATED DATA OUT TXD DATA IN RXD EXT RESET
11. otherwise Extended Warranty Extended warranty coverage can be purchased in a one or two year term at the time of balance purchase Details are available by contacting Scientech at 800 525 0522 or 303 444 1361 or Fax 303 444 9229 or E mail inst scientech inc com 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 underpacked 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 Avenue Boulder CO 80303 U S A Disposal of Electrical and Electronic Equipment
12. register 87 to the decimal number entered in the current units Register 87 is undefined at every ON OFF cycle decimal number CONVERT CR None Loads the number entered as a last front panel units relative multiplier into the CONVERT register and enters the CONVERT mode CLEAR exits the convert mode and un defines the convert register decimal number CAL CR None Loads a computed number based on the entered number as a last front panel units relative multiplier into the CAL register and enters the CAL mode The display must be non zero when this command is issued If the display is zero a 3 second Err message is displayed and the balance returns to its normal weighing mode The current weight reads as the number entered with the appropriate sign CLEAR exits the CAL mode and un defines the CAL register integer PIECES CR None Loads a computed number based on the entered number as a last front panel units relative multiplier into the PIECES register and enters the PIECES mode The display must be non zero when this command is issued If the display is zero a 3 second Err message is displayed and the balance returns to its normal weighing mode CLEAR exits the pieces mode and un defines the pieces register Command Response Purpose decimal number PCT CR None Puts the balance on the percent weighing mode with the displayed reading converted to the percent entered The
13. 5D Weighing Mode Single Range Dual Range Floating Tare Capacity 80g 120g 210g 310g 410g 510g 100g 250g 200g 500g Readability 0001g 0001g 001g Tare Range 0 80g 0 120g 0 210g 0 310g 0 410g 0 510g 0 200g 0 500g 0 200g 0 500g Repeatability 0001g 0001g 0001g 00015g 00015g 0002g 0001g 00015g Standard ovation S _ Mee osa f me cooeg oosa Linearity 0002g 0002g 0005g tabilization Time User Selectable Weighing Speed Adaptive isplay Update Interval 200ms ata Interface RS 232 bidirectional interface is standard Baud rates are 300 600 1200 2400 4800 9600 and 19 200 an Size Circular 3 5 inch diameter 5 C to 40 C Relative Humidity 80 for temperatures up to 31 C decreasing linearly to 50 at 40 C Power Supply 115 Volts 60 Hz 10 230 Volts 50Hz or 60 Hz 10 Windscreen 7 5W x 8 25D x 9 5H Pa A ea ED OOH S S O 80g 100g 200g 300g 400g 500g 200g 500g 50g 50g 100g 200g 200g 100g 200g ousing WxDxH 7 5 x 11 25 x 3 25 Weight 13 8 Ibs 23 Specifications for SP Precision Balances Weighing Mode Single Range Dual Range Se entngtaemy Capacity 150g 250g 350g 500g 1000g 1500g 40g 100g 500g rey Lees sog zooo _ 0 01g Tare Range 0 150g 0 250g 0 350g 0 500g 0 1000g 0 1500g 0 400g 0 500g 0 2000g peere o fee See ee ee f ie oan osoog ozooog Repeatability 0 001g 0 001g Linearity 0 0015g 0 0015g en ss Weighing Speed Adaptive isplay Update Interval RS 232 bidirect
14. Connector Pin Out gt NWA The balance will not output any information under any circumstances unless pin 8 CTS is held in an ON state 3 to 15 VDC Interfaces not utilizing the CTS handshake may tie pin 8 to pin 7 or pin 8 to pin 4 to defeat it This interface does not strictly adhere to the official RS 232 standard However it emulates what has become commonplace in the microcomputer industry RS 232 Specifications Type EJA RS 232C DTE Method Format Code ASCII For parity Even or Odd For parity none Note RS 232 Front Panel Configuration Half duplex Asynchronous Transmission Bi directional 300 600 1200 2400 4800 9600 and 19 200 baud rate selectable default is 9600 Data bit 7 Stop bit 1 Data bit 7 Stop bit 2 Parity none Data bit 8 Stop bit 1 does function but is not technically correct Before using the RS 232 feature of your balance it is necessary to configure the interface properly for your application The RS 232 Configuration Mode allows you to set baud rate front panel control software protocol parity auto send continuous send and display blanking The balance is configured with defaults at the factory The default modes are shown in parenthesis below It is not necessary to follow the entire configuration procedure if only one parameter is to be changed Follow Steps 1 and 2 then use the MODE switch to select the parameter to be changed skipping the others Select the desired setting u
15. SCIENTECH Series 12000 Electronic Balance Setup and Operating Procedures PN11756C Thank you for choosing a Scientech Electronic Balance Scientech an ISO9001 registered company and its employees are pleased to provide you with a balance designed and manufactured for years of reliable service and proudly made in the U S A 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 Unpacking and Setups oncer cece en a E van Eeee eie ea S ASEENA a Eae e see Se SE SES Eo EEE EAEE o e SEES E e SEE E ESEE Eao Ea Ee EEANN E Eet 3 Choose the Proper Environiitient vs ne e EO R ORENSE OE E E EO E E O A 4 Level the Balance nnii onea ein EE NERE AEAEE EEE E AN EN S O E E Mave sly R AE EN A 4 Unlock the Clamping Screw ricorre a e EE E E EAR E EE cand EA E T R EOE 4 Connectto an Electrical Outlet miimi iiien iee e EREE EREE EKINA EIEEE AE E EREE E E R AE E a 5 Turnithe balante Oferiti teien ose E EEEE NEA A REEE EE RE S EEEE E E E EE a 5 Good Medstiremenit Pra ctic Siami aserenn re eE e E EEE EEE E EAER ENE E E AEN R NAE N 5 Equipment enen
16. Shaft to balance and scratching of extend out of case and table top while leveling RAISES Front of Balance Figure 2 Leveling Unlock the Clamping Screw All balances are equipped with a special clamping screw that locks the balance suspension during shipping This screw must be loosened before the balance can be operated see Figure 3 l Locate the black knob on the front center of the balance underneath the display area 2 Remove the paper tag 3 Turn the knob in the direction shown below until finger tight If the balance is ever shipped or moved long distances the clamping screw should be retightened by turning the knob in the opposite direction until finger tight Figure 3 Unlocking Clamping Screw Connect to an Electrical Outlet The balance is supplied with a 115 220 50 60 Hz automatic switching remote power supply This power supply will work with most electrical outlets however 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 Note Note Note First plug the round DIN connector into the balance s rear panel receptacle Then plug the power supply into a grounded AC outlet Do not alter or bypass the ground plug in any way Doing so adversely affects the performance of the balance Scientech recommends that the balance be plugged into an electrical outlet at all times This in
17. To initiate a CAL 1 using the motor driven internal calibration weight via a RS 232 command issue the command ACAL CR The automatic internal weight calibration will begin immediately without further user interaction For a more complete discussion about RS 232 please see the Bi directional RS 232 Command Set section CAL 2 Linearity Linearity is set in the balance s software at the factory during the manufacturing process It requires a special set of weights that are not available commercially When a CAL 1 function is performed the linearity is automatically reset as well Unless the balance is damaged the linearity will not change Therefore CAL 2 should never be performed by the user PCS Front Panel Parts Counting Note Access to the PCS function via the front panel is disallowed if bi directional RS 232 is enabled RS 232 is enabled by selecting local control LC oFF see RS 232 Front Panel Configuration section for details Local control ON means the front panel controls the balance User Action Balance Response 1 Press the FUNCTION button or MODE and Display cycles repeatedly through PCS HI OK LO CALI CAL2 T and RANGE buttons simultaneously for dual range models 2 Press the MODE button when PCS appears on PCS and 0 flash This is a prompt to zero the balance with the container that the display will hold the pieces on the weighing pan 3 Place the empty container
18. a range is selected its annunciator briefly appears at the upper right of the display Autorange automatically switches from low range to high range when a weighing exceeds the capacity of the low range Note On dual range balance models pressing the RANGE FUNCTION and MODE buttons simultaneously will duplicate the menu described for single range balances The MODE Button For all models except the SM models pressing the MODE button starts the unit of weight cycle as follows grams g carats ct pennyweights dwt troy ounces ozt ounces oz pounds Ib kilograms kg and milligrams mg When the desired unit of weight appears press the MODE button a second time to select that unit of weight The available units of measurement for SM models are grams g and milligrams mg An optional factory installed user specified custom unit of measure is available If you have this special unit of measure feature in your balance A appears in the unit of weight cycle in addition to the other options Press the MODE button to select this option The SEND Button Pressing the SEND button sends the information on the balance s display to an external device via the RS 232 interface Note Scientech balances are DTE computer devices If communicating to another DTE device ie computer a Scientech RS 232 cable PN10697 or normal null modem cable is required If you are communicating to a DCE device printer a serial cable is required Sci
19. alance sending only as all incoming RS 232 command strings are ignored by the balance To enable bi directional RS 232 communication set the local control to off see RS 232 Front Panel Configuration section 15 Bi Directional RS 232 Command Set The following commands can be sent to the balance in any combination of upper and lower case characters No action is taken by the balance until it receives a carriage return indicating the end of the command string Each command s syntax is described using this notation keywords are in upper case items in are required when one item must be chosen from a list each choice is enclosed in CR means the carriage return or enter character LF means the line feed character and _ indicates a single space character A command string or entry is considered to be a keyword and or a numeric string followed by a carriage return The commands are listed by type e Type 1 commands are balance control functions e Type 2 commands are balance input functions e Type 3 commands are balance output functions e Type 4 commands are clock calendar functions Where a balance response is given no attempt has been made to show the actual message formats You should refer to the section on balance message formats for detailed information Numbers stored in the registers are classified by the balance software as being additive multiplicative or unflagged Additive numbers are used by the balance software in a
20. an External Weight cece 9 RS 232 Command for CAL 1 Using the Internal Weight cc ceceseeseesseeseeeeeeesceecesecsecnsecnaecsaecsaecaeeeaecaeecaeseneeeaeeeeseeeseeneeeeenseenaes 9 CALL 2 Lam earity see Boo acc eet E NE tsed wc sued bic dns E ER used egaxes siete A A mbes dete taka dete A TE 9 PCS Front PanelyParts Counting 2s cs fees E os Seas Hotes E sin bia LE abcd A oad obese E lee ee oles 10 HI OK LO Checkweighing Process Control Limits cecccssecssesseessceesceseeesecseceaecnaecnaecsaecaeecseseaeeaaeseeeseeeseeeeeenaecaecaecaecseeeaeeeaes 10 Percent Weighing iiien nnii iian i AER E E E E duccudeveud dues duu teetils cies cdesadevccnsubanedess E iea EiS 11 T Live Animal Weighing Severe Environment Weighing ccccccccssscscscscscscscscscscsesessssssssvavavsvscssssssssssseeesesesescacasacscsesesenananavavaaess 11 Floating Far dual range models only cenieni A RA es ee E N E RE T E E EREA 11 Capacity IracKker mrene e A BL Mii ete RI eee ee eae Dh ee E ERE ee E E REEE 12 Selectable Filters Stability Indicator and Send When Stable c ccccesceseesseeseeeseeeseeeeeeeeceseceseceseceaeceeecnaecsaecaeecaeeeneeeaeeeeeeeseserenrensees 12 Density Determinations 22 24 cack lei ces E aE eS ei RI eee i ee a a RS 12 Below Balanc Wee1ghing 2220s sche cecce covets dei dee tc bee shsae cu abe lin eens dee dhokk cdheeck ote beets eedhees an soe Wide nthe eatin an ees 13 Specific Grav
21. and III For mains supply the minimum and normal category is II CE Mark All Scientech Electronic Balances carry the CE Mark and conform to the requirements of the following standards EN 55011 1998 Limits and Methods of Measurement of Radio Disturbance Characteristics of Industrial Scientific and Medical ISM Radio frequency Equipment EN 61326 1 1997 EMC Requirements for Electrical Equipment for Measurement Control and Laboratory Use EN 61010 1 1993 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Specifications for SM Semi Micro Balances Note Balances with an Internal Calibration Weight have an IW suffix in their model number Their specifications are the same as the models in the table below SM 124D SM 128D Range Dual Range Floating Tare 40g 120g 00001g 0001g 0 80g 0 99g 0 120g 0 120g 00002g 00004g nae g 00003g 00003g 00003g 0002g RS 232 bidirectional interface is standard Baud rates are 300 600 1200 2400 4800 9600 and 19 200 115 Volts 60 Hz 10 230 Volts 50Hz or 60 Hz 10 Calibration Weight 1009 E ee i ee 50g 22 Specifications for SA Analytical Balances Note Balances with an Internal Calibration Weight have an IW suffix in their model number Their specifications are the same as the models in the table below Model _ SA 80 SA 120 SA 210 SA 310 SA 410 SA 510 SA 210D SA 52
22. and you are now in the time averaging weighing the display mode 3 Place a container cage on the pan T appears in the display as well as a slowly increasing weight of the container cage 4 When the display has stabilized press the 7 appears in the display as well as zeros ZERO switch to zero out the container cage weight 5 Remove the container cage and place the A slowly decreasing negative weight is displayed sample animal in the container cage 6 Replace the container cage with the enclosed After the sample caged animal is placed on the pan the weight reading will slowly stop sample animal on the weighing pan decreasing and then slowly start increasing as the weight reading is averaged over time When the weight stops drifting upward you have reached the final time averaged weight reading 7 If you want to reach the final time averaged The final time averaged weight reading is reached more quickly weight reading more quickly press the FUNCTION switch or the RANGE switch on dual range models This resets the time averaging mode 8 If you want to exit the time averaging You are now in the weighing mode you used just before selecting the time weighing mode press the MODE switch averaging mode Floating Tare dual range models only Floating tare is only active when the balance is in LO range Floating tare yields low range resolution throughout the entire high range capacity of the balance A typical example
23. ane etic Sax hss eRe E E E R OA EEO E E O A ROE E E TEE 5 Envitonm t enne o an ae oS REA NOE A E OA E E E EE E E S E E ER R E OA 6 OPEM OT riean g noer E E ESET E A EEEE ERE E IAE EE ET EOE EE ENS RTE 6 Front Pael OOHO S A a a aTa a teas a a a e esters Moats shah a S aea ant a 6 Th ON OEF VO BUttoi esena a a a a a e aee a a teas aed cede ee a a a e 6 The RANGE FUNCTION BONO Sranie ir a A E EEE T ER 7 Single Range Balance ModE S A r a e aee e tes ted e e a e E eaa a e S rrain 7 Dual Range Balance Models reeter rsectecheceseeves cxcsuth eee Goveattuanties a a a E N aeaa a 7 Phe MODE Button a wageenees hats Batra Ee hat a tha ae GMa hie ale ies ae chee a Mal Se ls i cea as ad a ele a 7 Phe SEND BUON a beck sptzcespeets tak Uetens tates ze seraheck a a a brash haus a upto tos bit and Subave tects ol avs a Nae 7 The ZERO iButtons ss i3 a Nass ete ceshes sh x Teed Secteste aa a a thant ctees staal dade a E a eects Dah A lal eda 7 Balance Functions and Features 2 lt 2c 5 Sh seaseess E E sss e EEE E EAEE E E AE S EATE 8 Autocalibration To Calibrate the balance to an External Weight cccceeccesccesecesecssecseecseeeneeeeeseceseseneeeeeseeesaecsaecaeecaeeeaeeeeeenneeereees 8 Autocalibration To Calibrate the Balance to a Motorized Internal Weight cccceccsseesseeeeeseeesceeeceecesececesaecaecseecaeeeseeeneeneeenseees 8 Autocalibration To Calibrate the Balance and its Motorized Internal Calibration Weight to
24. cesaeeaeseeecsaecsaecnaecaaecaeeeneseaeenaeensesereeas 18 RS 232 Balance Message Formiats s a a E e a a E a a inc Gad ia toe anectake a E aE 19 Format A Balance in the normal weighing mode sssessssssseeesssrsesssestssstesessreessesetstestestssteessestestesttstsstetesststestestestestesessestessesets 19 Format A Balance in a special weighing mode ccesceessesscesscesecesecesecesecesecasecseecaeeeaesenesnesseessessseseeessecesuecsaeceaecaeeeaeeeaeeeneenseeereeas 19 Format B Balance in normal weighing mode cceceesseescessceesceecesecesecesecsaecasecseecseeeaeeeaesseeseesseensecsaecaecsaecaaecaaecaeecseeeseeeaeeneeeereees 20 Format B Balance in a special Weighing MOde ccesseessesscesscesecesecesecsecenecasecseecseeeaecsaescesseesseceseseesseeesuecsaecaaecaeesaeseseseneenseereess 20 Format G A eeoa n a a Lasse databace tet sae os e a cSt a saves Sas otto Mea cey eens a a a oc tea tar t3 ha aay Sitsuh 20 Bi Directional RS 232 Error Messages enrere a ia e a R a a a E i e a e e e aE aA 20 Troubleshooting Guiden iiei iei E da les ccd aves EE a EEE Eae E OSE EEEE E Eaa EEEa EE Aa EEEa E E EE E EEEN ee aa iia tis 21 2 6 0 7 Fe deter ee er Renee ere pe PESO steer eee ee rere eee rer erers trie eres ee ee 22 Specifications for SM Semi Micro Balances ccccccssesssessseesceeecessceseesccesecesecaeceaeceaecsuecseecaeseseseneseeessecsseeaeceaeceaeceaeceecaeesaeseaeeeseeeseneeseas 22 Specifications for SA Analy
25. ddition and subtraction operations Multiplicative numbers are used in multiplication and division operations Unflagged numbers aren t used in any arithmetic functions If you try to use an additive number in a function which requires a multiplicative number the balance responds with the register contents if applicable and a and the instruction is ignored Type 1 Commands Balance Control Functions Command Response Purpose CLEAR CR None Clears the previous command and resets the balance to normal operating mode The Tare register is cleared to zero and the balance is zeroed HI RANGE CR or None Set the balance range LO_RANGE CR or AUTO CR GRAMS CR or KG CR or MG CR None Places the balance in the indicated mode or units To abort or CARATS CR or DWT CR or any of the CAL sequences or the LIMITS modes use OZT CR or OZ CR or LB CR or CLEAR CR A CR or LIMITS CR or CALI CR or CAL2 CR ZERO CR None The balance takes whatever action it would in response to a push of the front panel zero switch Normally tares the balance TARE CR None If the balance is in the weighing mode this command tares the balance otherwise it is ignored decimal number _HI CR None Sets the check weighing high limit register register 88 to the decimal number entered in the current units Register 88 is undefined at every ON OFF cycle decimal number LO CR None Sets the check weighing low limit register
26. e line Terminates GLP mode ISO CR Sends ISO header and waits for target weight entry Puts balance in ISO mode Xxx xx_Targ CR Sends target weight g Enter target weight value in grams SEND CR Sends weight difference Terminates ISO mode between weight and target and signature line ASON CR or ASOFF CR See the RS 232 Balance Turns auto send on or off When auto send is on a time Message Formats section interval must be entered into register 89 see Type 4 commands CSON CR or CSOFF CR See the RS 232 Balance Tums continuous send on or off Message Formats section ACAL CR None Starts the automatic internal calibration weight calibration routine Type 2 Commands Balance Input Functions Command Response Purpose register number STORE CR None Stores the current weight at the greatest possible resolution in the specified register Decimal number ENTER register None Stores the number entered in the current units as an additive number STORE CR constant in the register specified decimal number ENTER CONVERT register None Stores the number entered as a last front panel units relative number STORE CR multiplier in the specified register decimal number TARE CR None Adds the number entered in current units to the TARE register CLEAR CR zeroes the TARE register decimal number ENTER_86_STORE CR None
27. e Filter section Press the MODE button The current continuous send setting CS oFF or CS on and OK are displayed Press the SEND button to choose between on or off Then press the SAVEd OK is displayed followed by the chosen setting ZERO button and OK 9 DISPLAY BLANKING SELECTION bL on is default bL on means that every time data is sent over the RS 232 interface the display will blink Press the MODE button The current display blanking setting bL on or bL oFF and OK are displayed Press the SEND button to choose between on or off Then press the SAVEd OK is displayed followed by the chosen setting ZERO button and OK 10 Press the ON OFF button The display blanks 11 Press the ON OFF button The balance returns to normal operation with the new RS 232 configuration Using Bi Directional Communications Scientech electronic balances interfaced to a computer via the RS 232 port can be controlled by a computer program in the same way an operator would control the balance using a PDA Any programming language with access to the RS 232 interface can be used to program this control The balance expects ASCII character instruction strings and responds with ASCII character data strings All characters with an ASCII value less than the space character decimal 32 of hex 20 are ignored by the balances If local control has been enabled LC on via RS 232 front panel configuration RS 232 communication is limited to b
28. e balance cycles back to Step 2 and shows the current filter setting Press the ON OFF button The display blanks Press the ON OFF button The balance returns to normal operation with the new vibration filter and stability indicator settings in place To return the balance to the default settings repeat steps 1 through 3 then turn the balance off and back on again 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 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 installing Below Balance Weighing The suspension can be damaged if over tightened The overload protection which is built into the pan assembly is not available at the below balance hanging device Therefore care must be tak
29. e stored until the balance is turned off To exit check weighing press the MODE button The balance then returns to normal operation Percent Weighing press the MODE button User Action Balance Response 1 Place an empty container on the weighing pan Zeros are displayed and press the ZERO button 2 Place the sample which represents 100 in the Display indicates the weight of the sample in the unit of measure you have weighing container selected 3 Press the FUNCTION button or MODE and Display cycles repeatedly through PCS HI OK LO CALI CAL2 T and RANGE buttons simultaneously for dual range models 4 Press the MODE button when CAL 100 Display will indicate and 100 00 This means that the weight on the pan now appears on the display represents 100 00 You are now in the percent weighing mode with all weight readings displayed as a percentage of the weight of the sample used in Step 2 5 If you want to exit the percent weighing mode You are now in the weighing mode you used just before selecting percent weighing Live Animal Weighing Severe Environment Weighing User Action Balance Response 1 Press the FUNCTION button or MODE and Display cycles repeatedly through PCS HI OK LO CALI CAL2 T and RANGE buttons simultaneously for dual range models 2 Press the MODE button when T appears on T appears in the display
30. ed in a foam support to protect them from shock during shipping and handling Save and reuse all packing material for future damage free shipments i w Y N x W SW ZER YN t SW r ri AY JER a VA SWITC 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 and 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 Turn the FRONT FEET as shown in Figure 2 to level the balance by centering the bubble in the LEVEL INDICATOR which is shown in Figure 1 Turning the foot as shown below raises that side of the balance and an opposite adjustment lowers it When properly adjusted the metal center shaft of the assembly will protrude from the center of the plastic foot and will contact the working surface to support the balance The plastic foot will be raised up against the bottom of the balance and will not be touching the weighing table Thumbwheel oe turns but stays Oy REN A in the same position N TI on case The Shaft R is what moves in and out but does not rotate This Rotating Thumbwheel s as design prevents walking of shown causes
31. en this step is complete a single weight or two alternating weights will begin flashing on the display 5 Place one of the flashing weights on the The display stops flashing and the selected weight is displayed balance s weighing pan 6 Wait 10 seconds for the balance to stabilize The display will momentarily blink then the selected weight will continue to be then press the ZERO button displayed In approximately 15 seconds when this step is complete the display Do not remove the weight from the pan will blank flash OK then shows CAL 1 and a flashing 0 7 To continue and recalibrate the internal calibration weight proceed to step 8 To stop here without calibrating the internal The balance has been calibrated and the display returns to zeros calibration weight remove the calibration weight from the weighing pan and press the MODE button 8 Remove the calibration weight from the The display shows a flashing CAL and the internal weight recalibration begins weighing pan then press the ZERO button You will hear the internal motor and see the capacity tracker fill and then empty The procedure will take about 30 to 90 seconds When complete the display will blank and then return to its normal weighing mode The balance is now calibrated to the external weight and the internal weight is calibrated to the external calibration weight RS 232 Command for CAL 1 Using the Internal Weight
32. en to avoid side shocks or pulling too hard on the hanging device For applications requiring suspension of weighings below the balance a 6 32 threaded screw is provided To access the set screw proceed as shown Then mount the balance on a solid pedestal or surface with a hole under the balance to allow access to the hanger 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 1 Remove all Pans 2 Gently set the ym Balance on its side 3 Remove Plastic Hole Plug save re install when not L using Below Balance weighing UL r XQ 2 he 4 Gently attach hanging device Scientech PN 10484 Exposed 6 32 set screw Figure 6 Below Balance Weighing Specific Gravity Determination The below balance weighing apparatus shown previously 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 To determine specific gravity using our balance 1 Install a below balance weighing hangar as shown in the previous section 2 Install a below bala
33. ent 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
34. entech offers a serial cable PN11367 for your convenience You may send the time and date along with the weight reading when you press the SEND button or you may send weight readings automatically at user specified time periods see the Bi directional RS 232 Command Set Type 4 Commands section for details Weight readings may also be sent to a computer or printer continuously every 200 milliseconds see the RS 232 Front Panel Configuration section for details Weight readings may be sent automatically when the balance reaches stability see Selectable Filters section The ZERO Buttons There are two 2 ZERO buttons Pressing either 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 one of the ZERO buttons Balance Functions and Features Autocalibration To Calibrate the balance to an External Weight This procedure calibrates your balance to an external calibration weight If your balance has a motorized internal calibration weight 9000 INT please use the procedure for Autocalibration Using 9000 INT Motorized Internal Calibration Weight Note Note Note Note Unpacking and Setup section Dual range models must be placed in HI range before starting the calibration procedure For correct calibration weight refer to specification charts in the back of the manual The balance should
35. he selection mode proceed as follows To exit the selection mode and return to normal operation turn the balance off and then back on again at any time User Action Balance Response Turn the balance off using the ON OFF Button Display blanks Hold the MODE button down while turning the balance on using the ON OFF switch The current filter Fil nor filtering normal Fil Lo filtering low or Fil HI filtering high and OK are displayed Press the SEND button until the desired vibration filter is displayed Then press the ZERO button to save the setting SAVEd OK is displayed followed by the current stability indicator setting Si on stability indicator will turn on when reading is stable or Si oFF stability indicator will always be turned off Press the SEND button until the desired stability indicator Si setting is displayed Then press the ZERO button to save the setting SAVEd OK is displayed followed by the current stability sensitivity setting SEnS the default is 2 display counts Press the SEND button until the desired stability sensitivity display counts setting is displayed Then press the ZERO button to save the setting SAVEd OK is displayed followed by the current send when stable SS setting oFF is the default Press the SEND button until the desired send when stable SS command is displayed Then press the ZERO button to save the setting SAVEd OK is displayed Then th
36. hout recalibrating the internal calibration weight Note Dual range models must be placed in HI range before starting the calibration procedure Note For correct calibration weight refer to specification charts 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 SM models need a 0 0033mg tolerance weight or better SA models need a 0 033mg tolerance weight or better User Action 1 Remove any containers or weighing samples so that nothing is on the weighing pan then press the ZERO button 2 Press the RANGE FUNCTION button or MODE and RANGE buttons simultaneously for dual range balance models Press the MODE button when CAL 1 appears Balance Response Zeros are displayed Balance display cycles repeatedly through PCS HI OK LO CAL 1 CAL 2 T and LoS CAL and a flashing 0 are displayed In 4 Wait 10 seconds for the balance to stabilize then press the ZERO button The display stops flashing CAL 1 and a solid 0 are displayed approximately 15 seconds wh
37. ht the date time stamp is still sent Nothing is sent if the date time stamp is disabled and the display doesn t show the current weight 3 This case typically applies to a balance with the RS 232 interface connected to a computer There are several RS 232 I O commands containing the keyword RCL These commands issued by the computer all cause a single format C or a sequence of format C send to occur 4 This case also typically applies to a balance with the RS 232 interface connected to a computer A SEND command issued over the RS 232 I O channel by the computer causes an unconditional format A send Format A Balance in the normal weighing mode 1 2 3 4 5 6 7 8 9 10 11 CR X X X X X X X Yrs LF X a digit 0 9 or a decimal point or a space or a minus sign Y an upper case alphabetic character A Z The first character of the units or mode annunciator in the display followed by the rest of the characters of the annunciator If the display shows a minus sign it is the first character in the balance message In this case the least significant digit of the displayed number is in position 8 followed by only two spaces instead of three The Ist character of the units annunciator is still in the 11th position Here are some examples The notation used here is that CR means the carriage return or enter character LF means the line feed character and _ indicates a single space character Note that all space characters are shown expl
38. icitly Display shows 5 15 g Message is ___5 15 __GCR LF Display shows 211 05 dwt Message is _211 05 DWT CR LF Display shows 211 05 dwt Message is 211 05 DWT CR LR Display shows 0035 A Message is __ 0035_ A SPEC CR LF Format A Balance in a special weighing mode Display shows 1250 PCS Message is _ _1250 PCS CR LF Note that in these special weighing modes the least significant digit of the numeric field is in the 6th or 7th position if the number is negative and that the leftmost character of the annunciator is in the 12th position Display shows 100 00 CAL Message is 100 00 CAL CRLF Display shows sigma Tbar 0 00 g Message is 0 00 G_SIGMA__TBAR_ CR LF 19 Format B Balance in normal weighing mode 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 X X X X X X X Y Y Y Y Y CR LF Display shows 5 15 g and balance in high range Message is 5 15 G__HIGH CR LF Format B Balance in a special weighing mode Display shows 1250 PCS and balance in low range Message is 1250 PCS__LOW CR LF Note that in these special weighing modes the least significant digit of the numeric field is in the 6th or 7th position if the number is negative and that the leftmost character of the annunciator is in the 12th position Format C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 R E G 7 X X X 7 B X X xX xX xX xX xX Y Y CR LF Display shows the contents of register 24 as 102 56 an add
39. ional interface is standard Baud rates are 300 600 1200 2400 4800 9600 and 19 200 Power Supply 115 Volts 60 Hz 10 230 Volts 50 Hz or 60 Hz 10 Calibration Weight 150g 250g 350g 500g 1000g 1500g 400g 500g 2000g 100g 200g 200g 500g 1000g 200g 200g 1000g Housing WxDxH 7 5 x 11 25 x 3 25 Weight 9 5 Ibs 24 Specifications for SL Laboratory Balances Moder stao sieo stooo st2000 sis000 stsooo sis000 sta100D SLSZ000 Weighing Mode Single Range Dual Range Aa a A Capacity 400g 600g 1000g 2000g 3000g 5000g 6000g 1000g 2000g ey mee E Readability 0 01g 0 01g Tare Range 0 400g 0 600g 0 1000g 0 2000g 0 3000g 0 5000g 0 6000g 0 3000g 0 5000g paenan ND oao f oaos f osoo f Oeae f somg osooog Repeatability 0 01g 0 01g Standard Devitony Linearity 0 015g 0 015g ee tabilization Time User Selectable Weighing Speed Adaptive 300 ms RS 232 bidirectional interface is standard Baud rates are 300 600 1200 2400 4800 9600 and 19 200 BC 10 40 C 80 for temperature up to 31 C decreasing linearly to 50 at 40 C Power Supply 115 Volts 60 Hz 10 230 Volts 50 Hz or 60 Hz 10 Calibration Weight 400g 600g 1000g 2000g 3000g 5000g 6000g 3000g 5000g 200g 500g 500g 1000g 2000g 2000g 5000g 2000g 2000g Housing WxDxH 7 5 x 11 25 x 3 25 Weight 8 5 Ibs 25 Specifications for SG General Balances and SE Gem Balances Model 8G3000_ 865000 868000 5612000 Weighing Mode Single Ra
40. itive constant with units in grams Message is REG _024 102 56 G CR LF Display shows 12 03 35 as the time Message is REG _101_ 12 03 35 TIME CR LF Bi Directional RS 232 Error Messages There are three single character error messages that the balance issues when certain errors occur during bi directional communications Each error character is followed by CR LF 1 is issued when the input buffer is full Normally this occurs because a CR is lost or the command string is too long The balance has a 37 character input buffer which is sufficiently long for all valid command strings The is issued as soon as the buffer is full and is repeated after each successive character until a CR is received In response to the CR a and CR LF is sent and the balance input buffer is cleared 2 is issued when a parity overrun or framing error is detected by the interface since the last CR The is sent after the CR ending the command string which caused the error has been received 3 is issued when a syntax error occurs or when an illegal character is received or when some other procedural error is detected The is sent after the CR ending the command string which caused the error has been received Power up errors are not detectable over the RS 232 I O channel The only way to detect such errors is to attempt to communicate with the balance and have the ability to recognize that the communication is failing Displayed error messages are
41. ity Determinations s0i2 2 04 oes aE E ts eag ta dese O ees hoes ot Pe an a es a we es 13 Security Brackets essien ote atest ald eee eed e Gi oe ee ane ak id eee ieee BL ee 13 OptlONs sierss oc nees enea iaestee A E EEEE a EE EE te E E eet aa eecesstug even Na EESE Ee a N eE E gwen E eae She eneetan e RET 13 Optional RS 232 Printers sirsie e EEEE A med A E ENE EEEO E E EES E E EEA E th olen e eE 13 RS 232 Inter acesar cis teeta a E E EA A E A ET E dn eater E E ETE EA A E E AE ATA 14 RS 232 SpecifiCations ionnan a a a e n a a a a a a a e 14 RS 232 Front Panel Configuration sensisse eii yeee ETE EEE E EEEE EO E E EEES ETE EEE K EE e ASTET 14 Using Bi Directional Communications saysi eegr nre a E ewes S E E EEES ETN E E E e E E ted ceed 15 Bi Dir ctiona RS 232 Command Setiat ae ese a iaio E EE RE EEEE EEE EESE i REE AET EE E E NE 16 Type 1 Commands Balance Control Functions cccecceessessceesceseceecesecesecssecasecaeeeseeeneceneseeeseeseeeesesesecnaecsaeceaecaaecaeesaeseseeeaeeneeerenes 16 Type 2 Commands Balance Input Functions ccccccceescsssceesceeceseesecesecaecesecasecseecaeeeneseaesseesseeeseeseeueceaeceaecaecaaecaeeeaeeeaeseseenseeereees 17 Type 3 Commands Balance Output FUNCtions cccceeccescesssesceseceeecesecsecssecsaecseecaeeeneeaeseeseenseeeseseeceaecaeceaecaeecseeeaeseaeeneeenseeeeeees 18 Type 4 Commands Clock Calendar Functions cccccscesssesscesscesecesecesecesecenecanecaeeeaeeeaeeenesseesa
42. l work see RS 232 Front Panel Configuration Section 89 RCL CR REG 089 HH MM SS INTV CR LF Returns the auto SEND time interval currently set 1 0 _ENTER_79_ STORE CR A inregister 79 disables the date time stamp feature of any SEND A 0 in register 79 enables the date time stamp RS 232 Balance Message Formats The balance will respond to a SEND command by transmitting a message in one of three formats depending on how the SEND command was issued The following discussion defines four types of SEND commands and the three message formats 1 The first case typically applies to a balance with RS 232 connected to a printer and an external print switch If the SEND is initiated by activation of the hardware SEND line on the RS 232 I O module and the display shows the current weight then the response will be a format B If the display does not show the current weight i e date time or a register RCL the hardware SEND is ignored 2 This case typically applies to a balance with the RS 232 interface connected to a printer If the SEND is initiated by a time or auto SEND and the display shows the current weight then the response will be a format B The date time stamp is included in format C if register 79 has been set to prior to setting register 89 to the desired time interval To stop auto sending set register 89 to 0 If the date time stamp is enabled and the display doesn t show the current weig
43. mode you used just before selecting the parts the MODE button again counting mode HI OK LO Checkweighing Process Control Limits User Action Balance Response 1 Press the FUNCTION button or MODE and Display cycles repeatedly through PCS HI OK LO CAL1 CAL2 T and RANGE buttons simultaneously for dual range models 2 Press the MODE button when HI OK LO HI LO and 0 flash appears on the display 3 Press the ZERO button HI flashes and zeros are displayed 4 Place weight on the weighing pan which HI flashes and the upper weight limit is displayed represents the upper control limit of the acceptable weight range 5 Press the ZERO button LO flashes and the upper weight limit is displayed 6 Remove the upper limit weight and place LO flashes and the lower weight limit is displayed weight on the weighing pan which represents the lower control limit of the acceptable weight range 7 Press the ZERO button HI OK LO briefly appears and then OK and the lower weight limit are displayed 8 Remove the lower limit weight LO appears and zeros are displayed The balance is now ready to checkweigh samples The balance displays OK along with the weight of the sample if the sample is within the acceptable weight range If the sample is too heavy HI and the weight are displayed If the sample is too light LO and the weight are displayed The weight limits ar
44. n press the ZERO button approximately 15 seconds when this step is complete a single weight or two alternating weights will begin flashing on the display 5 Place one of the flashing weights on the The display stops flashing CAL 1 and the selected weight are displayed balance s weighing pan 6 Wait 10 seconds for the balance to stabilize The display will momentarily blink then the selected weight will continue to be then press the ZERO button displayed In approximately 15 seconds when this step is complete the display Do not remove the weight from the pan will blank flash OK then display the calibration weight including decimal places The balance is now calibrated and in the normal weighing mode 7_ Remove the calibration weight The display returns to zeros Autocalibration To Calibrate the Balance to a Motorized Internal Weight This procedure is only for SA and SM balances with the suffix IW after the model number which means a motorized internal calibration weight is installed Note Dual range models must be placed in HI range before starting the calibration procedure Note For correct calibration weight refer to specification charts 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 User Action Balance Response 1 Remove any containers or weighing samples Zeros are displayed
45. nce 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 3 Then 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 4 Then 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 Subtract the reading in Step 4 from the reading in Step 3 6 Divide the reading in Step 3 by the number calculated in Step 5 The result is the SG of your sample EXAMPLE Reading in Step 3 6 50 Reading in Step 4 4 25 Subtraction 2 25 Division Step 6 6 50 2 25 2 89 specific gravity A Security Bracket A security bracket is provided on the rear panel If needed the bracket slides out of the rear of the balance providing a convenient method of securing the balance Options Remote Weighing 7000 04 and Custom Unit of Measure 9000 90 options must be installed at the factory or by personnel authorized by Scientech Other options such as a Scientech printer may be purchased at any time Please contact Scientech at 303 444 1361 or 800 525 0522 or email us at inst scientech inc com for information Optional RS 232 Printers Note Printers must be serial There are a few
46. nge 3000g 5000g 8000g 12000g 250g 2500g Readability 0 0019 0 01g 0 3000g 0 5000g 0 8000g 0 12000g 0 250g 0 2500g Repeatability 0 1g 0 001g 0 01g 10 159 3 seconds 300 ms Pan Size Rectangular 7 5 W x 8 0 D 4 5 plus 2 5 removable plastic FCDA 80 for temperatures up to 31 C decreasing linearly to 50 at 40 C Power Supply 115 Volts 60 Hz 10 230 Volts 50 Hz or 60 Hz 10 Calibration Weight 3000g 5000g 8000g 10000g 250g 2500g Somen woo ooog ang swog soog d 00g awos 26 Limited Warranty All Scientech Series 12000 Electronic Balances and their accessories are warranted against defects in materials and workmanship within North America for three 3 years and all other areas for 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 Scientech service facility The foregoing warranty is 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
47. on the pan wait 10 PCS and 10 flash This is a prompt to place 10 pieces in the container seconds and then press the ZERO button 4 Place 10 pieces in the container wait 10 PCS continues to flash and OK appears on the display while a stable weight is seconds and then press the ZERO button obtained Then 10 000 or something very near it appears on the display The number of decimal places depends on the weight PCS continues to flash This prompts you that you may now increase the sample size in order to obtain a more statistical significant sample which yields a more accurate parts counting conversion factor The decimal places aid you in rounding the piece count correctly as the sample size increases 5 If you want a larger sample size to be used in The balance will round to the nearest whole number but still show the decimal computing the parts counting conversion places This step may be repeated as many times as you desire factor add pieces the balance will count them until the decimal part is near 0 7 or 0 3 Then press the ZERO button 6 When you are satisfied the sample size is large The balance rounds to the nearest whole number the decimal places disappear enough press the ZERO button once again and PCS lights steadily 7 When you wish to count something else press You are now back at Step 2 with a flashing PCS and 0 the MODE button 8 If you want to exit the counting mode press You are now in the weighing
48. only available by polling the balance using the SEND command The balance would respond by transmitting the displayed error i e Err 1 Err 2 20 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 DIN 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 Plug in cable press ON OFF switch No power from AC outlet Turn on circuit breaker Change AC outlets OL appears in display Maximum capacity exceeded Reduce container weight Weigh sample in smaller increments Switch to high range dual range units Shipping clamp is engaged Disengage clamp see page 4 UL appears in display Pan is not in place Insure pan is positioned properly Balance is out of range Press ZERO switch Shipping clamp is engaged Disengage clamp see page 4 The display is unstable Drafts air currents are present Install windscreen relocate balance Vibrations are present Tsolate balance from vibration relocate balance Weight readings are incorrect Balance is out of calibration Balance is not level Display wa
49. rt the turn on sequence shown in Figure 4 During this sequence the balance is doing an automatic systems checkout to insure it is functioning properly If your balance was purchased with the optional 9000 INT motorized internal calibration weight all objects on the stainless steel pan must be removed before turning on the balance using the front panel ON OFF switch Press the ON OFF button and observe the turn on sequence shown in Figure 4 With the 9000 INT installed the balance will then load the internal weight on and off the weighing sensor in order for the internal weight to be positioned correctly Please wait until all weight readings have stopped changing the OK annunciator appears and the motor is silent before zeroing the balance and starting weighing operations When the balance is on pressing the ON OFF button will turn off the display 6 The RANGE FUNCTION Button Single Range Balance Models Pressing the RANGE FUNCTION button begins the following menus cycle e PCS Front panel parts counting e HIOK LO Checkweighing e CAL 1 Autocalibration e CAL2 Linearity e T Live animal weighing e percent weighing To select the desired function press the MODE button when it appears on the display Note Front panel parts counting is not available with bi directional RS 232 enabled Dual Range Balance Models Pressing the RANGE FUNCTION button allows you to choose from low LO high HI and autorange HI LO As
50. s not zeroed before weight was placed on pan Object being weighed is touching windscreen or balance case top Unit of weight selection is incorrect Recalibrate balance Level balance Press ZERO switch before weighing Reposition object Select proper weighing mode Display stays in turn on sequence Pan not in place Drafts or vibrations present New windscreen has been installed Shipping clamp is engaged Power supply connected to wall outlet before balance connector Place pan on balance Isolate or relocate balance Raise pan height Disengage clamp see page 4 Unplug power supply from wall then replug into wall Err 1 appears in display Calibration weight is incorrect Use calibration weight that appears in balance display Err 2 appears in display Balance not warmed up enough for calibration to be performed Plug in and turn on balance for hour Err 3 through 14 appears in display Service is required Call Scientech s Service Department at 800 525 0522 or 303 444 1361 or email us at inst scientech inc com Err appears in the display Procedural error Review procedure in manual and try again 21 Environmental Requirements This product is intended for indoor use at altitudes up to 2000 meters Pollution Degree 1 or 2 in accordance with IEC 664 and transient overvoltages according to Installation Categories Overvoltage Categories I II
51. sing the SEND switch save the setting using the ZERO switch then turn the balance off and then on again with the ON OFF switch To enter the RS 232 configuration mode via the front panel proceed as follows User Action Balance Response 1 Turn the balance off using the ON OFF button Display blanks 2 Hold the SEND button down while turning the balance on using the The current baud rate br300 br600 br1200 br2400 ON OFF button br4800 br9600 or br19 200 and OK are displayed 3 BAUD RATE SELECTION 9600 is default Press the SEND button until the desired baud rate is displayed Then SAVEd OK is displayed followed by the chosen baud press the ZERO button rate and OK 4 LOCAL CONTROL SELECTION LC on is default LC on means control the balance LC oFF must be selected Press the MODE button ZERO button that the front panel switches control the balance To enable a computer to Press the SEND button to choose between on or off Then press the The current front panel control setting LC on or LC oFF and OK are displayed SAVEd OK is displayed followed by the chosen setting and OK 14 User Action Balance Response 5 PROTOCOL or HANDSHAKE SELECTION Pr on is default Press the MODE button The current software protocol setting Pr oFF or Pr on and OK are displayed Press the SEND button to choose between on or off Then press the
52. sures the balance is always warmed up and ready for use Turn the balance on Press the ON OFF button one time to turn the balance on and observe the following turn on sequence Figure 4 Turn On sequence Allow the balance to warm up for at least 1 hour then follow the Autocalibration 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 2 The equipment must be of sufficient readability to calibrate or measure the weight or sample under test 3 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 or granite
53. tical Balances c ccccescssesssesseesseeeseesneeeneeseeesecaeceaecsaeceaecsaecaaeeaeeeaeseseseeseesesecsseceaeceaecaecauecaeesaeeeaeeeaeseneeereees 23 Specifications for SP Precision Balances ccccesccesssesesssesscecseeesecseeeseeesceesecesecaecsaeceecaeceaeceaecaaeseeessessecesesseceaeceaecaeceeecaeeseseaeeeseseneneeeeas 24 Specifications for SL Laboratory Balances i ci cccs ccsccscscceicacccsscesceecscesteccnseddacsedecduensdeceuceascccncoadessedsetsensceetecan eddoueaseddeduadiadecdaensdecteess udddvcases 25 Specifications for SG General Balances and SE Gem Balances c cecccecccescceseceseeseeeseessecscecaeeeseeeneceeesseceaecnseceseceaeceaecaaecaeecaeeeaeeeeeeneeeeeeeas 26 Litnited Warranty icnn es hacks beet lags lence EE E ca du cea desea leded eda ceddeaveasadcc duces EEE ledueadedeouea E E a i i 27 Extended Warranty iieiea a e n ea dbcdueeardawsceade caucendedeecvadbensesava E EE E i 21 Returned Goods Procedure cnserenndnnrmienau nni a a E ed eee san ode ee TA EOE Ea 27 Disposal of Electrical and Electronic Equipment ccccsccesccssecsseceeeseeseeesecesecesecesecseceaecaecaeenaecsaeeeseceseeeeeseeseenseseaeceaeeaaeenaeeeecneeeaeeenes 27 Quick Setup Guides cess sicccaes sseceseceeedes 2 Soa cekes E E 200 Fa duck ataces uae ccaaceded eava iaceienavecnees E R E E EE 28 Unpacking and Setup The balance weighing pans remote power supply windscreen standard on some models and any optional accessories are pack
54. 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 4 Time your measurements Consistent sample times will provide more consistent measurement Front Panel Controls Note Y S T SEs a Y NN Tae Q SR y SS 4 i Q E j g Al Aak S Zi Figure 5 Balance Front Panel The annunciators CNV and X are shown in Figure 5 but are not available through any front panel controls However these functions along with all other front panel functions are available through RS 232 commands These commands are discussed later in the RS 232 section of the manual The ON OFF I O Button When the balance is off pressing the ON OFF button will sta
55. using floating tare would be where you combine different components by weight to produce compounds The procedure is as follows 1 2 ON E R Select LO range by pressing the RANGE button until LO briefly appears in the display Place container on weighing pan If the container weight exceeds LO range capacity OL is displayed If the container weight does not exceed the LO range capacity the container weight is displayed Press the ZERO button The display returns to zeros and LO range Add the first component until the target weight is reached Then press ZERO Add the second component until the target weight is reached Then press ZERO Continue until all components have been added Floating tare allows you to enter the LO range from anywhere within the full capacity range of the balance This feature is particularly useful when adding small amounts to large tare loads and compounding where weights are accumulated Floating tare is only active when the balance is in LO range Pressing the ZERO button returns the display to zeros in LO range While you are using the floating tare feature it is easy to lose track on how much capacity has been used For this reason the Capacity Tracking feature is a helpful tool Please see the discussion under that heading 11 Capacity Tracker The capacity tracker provides a graphic display of the used and unused portions of the weighing range and is shown in Figures 4 and 5 Each segment represents

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