Home

User Manual - Affordable Scales & Balances

1. 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 are stored until the balance is turned off To exit check weighing press the MODE button The balance then returns to normal operation Live Animal Weighing Sever
2. ENVIRONMENT 3 LEVEL BALANCE Adjust the FRONT FEET to level the balance by centering the LEVEL INDICATOR Thumbwheel gt turns but stays in the same position against bottom of case The shaft moves in and out but does not rotate F A Rotating thumbwheel s as g shown causes Shaft to extend out of case and RAISES front of balance 4 CONNECT BALANCE TO ELECTRICAL OUTLET 24 5 TURN ON BALANCE Press the ON OFF switch and make sure the balance goes through the following sequence 0 CAL CNV PCS o GOR OR RZE ED 0 100 Ze D tid 0 100 6 WARM UP 1 HR THEN CALIBRATE Calibration instructions in manual
3. 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 ZSA models need a 0 033mg tolerance weight or better ZSP models need a 0 33mg tolerance weight or better and ZSL models need a 3 3mg 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 CAL 1 anda flashing 0 are displayed appears 4 Wait 10 seconds for the balance to stabilize The display stops flashing CAL 1 a solid 0 are displayed In approximately then press the ZERO button 15 seconds when this step is complete a single weight or two alternating weights w
4. Balance in a special Weighing MOde ccceesceesseescessceseceseceseceseceaecasecseecaeeeneesneseesseeeaeseseseessesesaecaecsaecseeeaeseaeeeeeeneeereees 18 Format Cirerer n Ee e ER R E E E RE EE tenet E E AEE ALA a ea E E EE E EERE 18 Bi Directional RS 232 Error Messages noae ee a A aa E a NS eSa EER 18 Troubleshootine Guide NE E E tas N E E E E E suensut oahdetees 19 Specifications for Zeta Seher BA OES a a A ea alia wa E a E a E E RE E eE 20 Environmental Requirements a a e a r E a a Arnaut r a a ai 20 CEM E a Aaah RE Ah oo hoo at Re rk aa a a a a a en a ee sk lac 20 Lamited Warrant a a a aa a a Sonat a a n aa a 21 Retumed Goods Procedure a Aft elite A E TE at oth E A E A E 21 Disposal of Electrical and Electronic Equipment ccsccesccssecsseesceeseeeseeseceseceseesecaeensecuecsaecnsecsaeecseseneeeeeeeseeeseseeeceaeeeaeenaecnsecseeeaeeenes 21 Quick Setup Guide r tis5 6 sci Ustsstcctelen ce alte teat oto heat ot lad Gen cuahiest I E E AEEA 24 Unpacking and Setup The balance weighing pans remote power supply and windscreen standard on some models are packed in a foam support to protect them from shock during shipping and handling Save and reuse all packing material for future damage free shipments sannt w ADJUSTAB tm FEET Figure Balance Full View Choose the Proper Environment The environment in which your balance is used is very important Air movement temperature changes
5. C to 40 C Relative Humidity 80 for temperatures up to 31 C decreasing linearly to 50 at 40 C Power Supply Automatic switching 115 230 Volts 50 60 Hz 10 Windscreen 7 5 W x 8 25 D x 9 5 H with 3 sliding glass doors Circular 6 inch diameter x 3 5 inches high Optional Pare 80 100 200 200 250 150 250 350 500 400 500 400 600 A WCHL eras 50 50 100 100 200 100 200 200 200 200 200 200 500 Housing 7 5 W x 11 25 D x 3 25 H Weight pounds z13 5 9 5 8 5 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 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 20 Limited Warranty All Scientech Zeta Series Electronic Balances and their accessories are warranted against defects in materials and workmanship within North
6. 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 or send an ASOFF command If the date time stamp is enabled and the display doesn t show the current weight 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
7. 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 measurement 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 i
8. 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 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 Troubleshooting Guide Problem Possible Cause Possible Solution The display is blank e Balance not turned on e Press ON OFF switch e Power cable not plugged in e Plug in cable e No power from AC outlet e Turn on circuit breaker e Change AC outlets OL appears in display e Maximum capacit
9. 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 number RCL_ CONVERT REG XXX register Puts the recalled register contents into the specified mode CAL PIECES CR contents MULT register and enters that mode 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 Accumulates the current weight in the XBAR registers GLP RCL _XAVG CR Sends statistics and signature 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 Tu
10. 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 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 Adjust turn the front feet see 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 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 turns but stays f J in the same position om on case The Shaft YQ is what moves in and out but does not rotate This Rotating Thumbwheel s as design prevents walking of shown causes Shaft to balance and scratching of extend out of case and table top while leveling RAISES Front of Balance Figure 2 Leveling Connect to an Electrical Outlet The balance is supplied with a 100 240 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 requiremen
11. 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 Nri 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 explicitly 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 ax A250 2 2 PCS CR LF Note that in these special weighing modes the least significant digit of the numeric field is in the 6
12. A E E E a SEEE N e EA ea e E EE NEE eee ES 8 Checkweighing Process Control Limits HI OK LO ccccecesccsseesseesceesseeseeseeeseceseeesecaecnaecnaecnaecaaecaecsaecaaecaeseaeesaeeaeeaecaeeaecnecaeeaes 9 Live Animal Weighing Severe Environment Weighing T c c cccccscsssssssesesesesessssssscsesecesesescacscacscsesesesssasssavavascasssisisiseseesesececacscacacas 9 Floating Tare dual range models only ccecceessesscesscesscesecesecesecsaecseecaeeeseeenesseseneeeesseceecnseeseecseecseeeaeseseseeeeseeseeeseceaecnaeenaeeneeceeeaes 10 Capacity racker c 2 stan fr ccc eis Sette ot A ATA E A A E E E E E E EAE 10 Selectable Filters Stability Indicator and Send When Stable ccccccesccsseesceeseeeseesseeeeeeecescensecsecaeceeecseecseecaeseseeeeeseeesereeseeneenseenaees 10 Density Determination A AE tet sh tac leess E E Satta catens coin tO Rc AE E tan oc Uia dane Bh cays ils shai Ponk Chai AE 10 Security Bracket f a0 seca tent te sR ote ci esi tae elses han hits oats Pascoe doth EAE EA on Site oP Mt res ae 11 OP OTS 2 see a tres oan ia haha os Mn ta ats he ation aha tae S AA ort tla Snel cease tad 2 A toes oa E A Wen tai Pen ste Mar teacsy atl 11 Optional RS 232 Printers ieir ien n a laced ER EA EE REE E cae ccebe REE TE E E see desdacdesedeeceuciveedualieseeced a E ana 11 RS 232 Jnte tface iion ra nin aed i E ia eee ee eel ee A ee an ee a eee ai aed 11 RS 232 Specifications onein acc an EE R ERE E EE EE cued tea sudeec
13. America for five 5 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 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 in
14. Response Press the FUNCTION button or MODE and RANGE buttons simultaneously for dual range models Display cycles repeatedly through PCS HI OK LO CAL1 CAL2 T and Press the MODE button when PCS appears on the display PCS and 0 flash This is a prompt to zero the balance with the container that will hold the pieces on the weighing pan Place the empty container on the pan wait 10 seconds for the balance to stabilize and then press the ZERO button PCS and 10 flash This is a prompt to place 10 pieces in the container Place 10 pieces in the container wait 10 seconds and then press the ZERO button PCS continues to flash and OK appears on the display while a stable weight is 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 If you want a larger sample size to be used in computing the parts counting conversion factor add pieces the balance will count them until the decimal part is near 0 7 or 0 3 Then press the ZERO button The balance will round to the nearest whole number but still show the decimal places This step may be repeat
15. SCIENTECH Zeta Series Electronic Balance Setup and Operating Procedures PN11533D Thank you for choosing a Scientech Zeta Series 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 Wnpacking andsSetup c s tease tects cal scan te oe esol Ete tec had nach ee hice A E E ed obese tieie ube 3 Choose th Propet Environment sce 21 E E seeseeseci ceded ove sa ties boss Ra tags ards thea ies od BEE tRNA aes 3 Wevel the Balances AE ss fsa ashes t ah MSc tes te ca take SONS E Aco 1ek LS bese ible a sats SASS bee tee ORS de A ss sda cee Se as a 4 Connect toan Electrical Outlets isc cicpie ects sechestee dec ae eies es deeds egies ea iiae ie RE oth bates eoeateh EERE iE RE a 4 Tum the balance oi eeno desage iani RE eile in ta errata ei ime een aoe Shale Ritesh ee ae a 4 Good Measurement Practices io tieien rennin tite E E RE saan cea v
16. 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 DUAL 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 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 det
17. alance 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 addition 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 Balanc
18. available Please contact Scientech at 303 444 1361 or 800 525 0522 or email us at instWscientech inc com for more information 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 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 5 6 DSR IS IGNORED 7 RTS IS MARKING 8 CTS IS EVALUATED 9 SEND EXTERNAL TTL SIGNAL 5 GROUND DTR IS GENERATED DATA OUT TXD DATA IN RXD 1 EXT RESET Figure 5 Connector Pin Out Nwa The balance will not output any information under any circumstances unless pin 8 CTS is held in an ON state 3 to 15 VDO 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 microcompu
19. ches 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 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 21 Notes 22 23 Quick Setup Guide 1 UNPACK BALANCE WEIGHING PAN sus Sue gt SUBPAN SS LABYRINTH SEAL ANALYTICAL WINDSCREEN STD ON SA SERIES ONLY SEND LEVEL DN SWITCH INDICATOR X gt gt a MODE VA gt SWITCH ON OFF Ver 5 SWITCH AN 7 FUNCTION ad om WIT RANGE oN NS ai LCD SWITCH DISPLAY 7 ADJUSTABLE ZERO ial FEET SWITCH 2 PLACE IN PROPER i
20. e 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 LO_RANGE CR None Set the balance range or AUTO CR GRAMS CR or KG CR or MG CR or None Places the balance in the indicated mode or units To abort 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 button Normally zeros the balance s display TARE CR None If the balance is in the weighing mode this command zeros the balance s display 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 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
21. e Environment Weighing 7 Note At any time during the T procedure you can reach the final reading more quickly by pressing the RANGE FUNCTION button This resets the time averaging and allows the balance to reach the final weight faster 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 T appears on T appears in the display and the balance is 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 button to zero out the container cage weight 5 Remove the container cage and place the P anda 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 sample animal on the weighing pan slowly stop 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 The desired PE of the displayed reading The annunciator will be displayed when the precis
22. e 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 and OK are displayed Press the SEND button to choose between on or off Then press the ZERO SAVEd OK is displayed followed by the button chosen setting 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 Selectable 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 ZERO SAVEd OK is displayed followed by the button chosen setting and OK 9 DISPLAY BLANKING SELECTION bL on is default bL on means that every time the balance receives a command the display will blink Press the MODE button T
23. ed as many times as you desire When you are satisfied the sample size is large enough press the ZERO button once again The balance rounds to the nearest whole number the decimal places disappear and PCS lights steadily When you wish to count something else press the MODE button You are now back at Step 2 with a flashing PCS and 0 If you want to exit the counting mode press the MODE button again The balance returns to normal operation Percent Weighing User Action Balance Response Place an empty container on the weighing pan and press the ZERO button Zeros are displayed Place the sample which represents 100 in the weighing container Display indicates the weight of the sample in the unit of measure you have selected Press the FUNCTION button or MODE and RANGE buttons simultaneously for dual range models Display cycles repeatedly through PCS HI OK LO CAL1 CAL2 T and Press the MODE button when appears on the display Display will indicate and 100 00 This means that the weight on the pan now 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 If you want to exit the percent weighing mode press the MODE button The balance returns to normal operation Checkweighing Process Control Limits HI OK LO
24. ermined 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 the selection mode proceed as follows User Action Balance Response 1 Turn the balance off using the ON OFF Display blanks button 2 Hold the MODE button down while turning The current filter Fil nor filtering normal Fil Lo filtering low or Fil HI the balance on using the ON OFF switch filtering high and OK are displayed 3 Press the SEND button until the desired SAVEd OK is displayed followed by the current stability indicator setting Si vibration filter is displayed Then press the on stability indicator will turn on when reading is stable or Si oFF stability ZERO button to save the setting indicator will always be turned o
25. ff 4 Press the SEND button until the desired SAVEd OK is displayed followed by the current stability sensitivity setting stability indicator Si setting is displayed SEnS the default is 2 display counts Then press the ZERO button to save the setting 5 Press the SEND button until the desired SAVEd OK is displayed followed by the current send when stable SS setting stability sensitivity display counts setting is oFF is the default displayed Then press the ZERO button to save the setting 6 Press the SEND button until the desired send SAVEd OK is displayed Then the balance cycles back to Step 2 and shows when stable SS command is displayed Then the current filter setting press the ZERO button to save the setting 7 Press the ON OFF button The display blanks 8 Press the ON OFF button The balance goes through the turn on sequence and 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 thru 3 then turn the balance off then back on again 10 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 zero the balance and then place the solid in the fla
26. g mec E ARER A a aE 5 Equipment a eeri ER AR T ERN RTO RE RO EEA EERE 5 Environment ioecrii e naii iieiea oA A aR EA TKE E A REA E AN E Aa EAA AR RE ie E EREE R AREE 5 OP ET ALON Tietotie i cei REENER E Taka EEE ETER EA N T ia E REE E ER ENR R R R Aa 5 Front Panel Controls niecne iiine niren aE eo ARAR RE AAAA AEA AR AEO R Wieden Renee 6 THe ON OFF 1 0 Buttoninante oenn ee Site ot hee E A es eet ee ee E ERA R 6 The RANGE FUNCTION Button irisscan E T A AT A teren ines 6 Sifigle Range Balance Model 2 62 5 04 ccs case leateseocsiee ahe e e E EE T E O R A E o O een idee 6 Dual Range Balance Models tise2 2 scccceacceesdie des oes cnc a EO A aah N T T ot ea Te 6 Phe ZERO Buttons sc cossises see ni niied a tee le ah cee nesta shh duh les eagle Nod dee ch E deb cet E O beste gh ieee Howl oon a 6 Th MODE Button aenn kote inadt daa niin ahi ean E aia anh ahah wien ab holon ties T The SEND Buttonin aasa eniieir a eh Pos a a E Ses lax sg dbs Miah os a a REE e E E RE Gi 7 Balance F cti s and Features i ocroienseiniaen iid edna einai il each Masa E E E R E a ia T Autocalibration CAL 1 Using an External Calibration Weight ccccccceeceesscesecesecesecseecaeeeneeseecseeeseesecseeeseeesaecaaecaeecaeeeseseneeneeentenes T Linearity CAL 2 en E A E E A oe BA A E Rh a A ee ee 8 Front Panel Parts Counting POS sce wcseccetts ee A eae Ate AM E E E E EA E ne we vs es ee eeepc 8 Percent Weighing 0 ies cece ein a cues bie A a math Ban E
27. he 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 ZERO SAVEd OK is displayed followed by the button chosen setting and OK 10 Press the ON OFF button The display blanks 11 Press the ON OFF button The balance goes through the turn on sequence and 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 balance 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 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 b
28. ill begin flashing on the display 5 Place one of the flashing weights in the The display stops flashing the alternating weights CAL 1 and the selected center of the balance s weighing pan weight are displayed 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 will blank flash OK then display the calibration weight including decimal Do not remove the weight from the pan places The balance is now calibrated and in the normal weighing mode 7 Remove the calibration weight The display returns to zeros Linearity CAL 2 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 Front Panel Parts Counting PCS Note Access to the PCS function via the front panel is disallowed if the 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
29. 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 1 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 Specifications for Zeta Series Balances Model ZSA80 ZSA120 ZSA210 ZSA210D ZSE250 ZSP150 ZSP250 ZSP350 ZSP500 ZSP404D ZSP510D ZSL400 ZSL600 Weighing Mode Single Range ae Single Range Dual Range Single Range Capacity grams 80 120 210 ae 250 150 250 350 500 ino a 400 600 po 0 0001 0 001 Readability grams 0 0001 0 001 0 001 0 01 0 01 Tare Range grams 0 80 0 120 0 210 0 200 0 250 0 150 0 250 0 350 0 500 0 400 0 500 0 400 0 600 Repeatability grams 0 00015 0 0015 standard deviation 0 0001 0 0015 0 0015 0 015 oe aaa 0 0002 P 0 0015 R Linearity grams 0 0002 0 0005 0 0015 0 005 0 015 Stabilization Time User Selectable Weighing Speed Adaptive Display Update Interval ms 200 Date Interface Bidirectional RS 232 with baud rates of 300 600 1200 2400 4800 9600 and 19 200 Weighing Pan Size Circular 3 5 inch diameter Circular 4 5 inch diameter Operating Temperature 5
30. ion of the weight is at the can be entered into the balance s storage desired vahie registers This can only be done via RS 232 as described in the Type 2 Commands section 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 button or the RANGE button on dual range models This resets the time averaging mode 8 If you want to exit the time averaging The balance returns to normal operation weighing mode press the MODE button 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 using floating tare would be where you combine different components by weight to produce compounds The procedure is as follows 1 Select LO range by pressing the RANGE button until LO briefly appears in the display 2 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
31. k 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 SGIENTECH ZSP150 wui Sin senD f X HI o f D LID EER E gt OK iy gt gt ENIO pe LO Ib MODE FUNCTION Ji Ika ozt CZ ZY 7mgctA A A j ZERO rocz o zg dwt ZERO WALLACE 100 0 T lt gt 0 T lt Figure 4 Balance Front Panel Note The annunciators CNV and X are shown in Figure 4 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 The ON OFF button is located in the upper left corner of the balance s front panel When the balance is off pressing the button will start the turn on sequence shown in Figure 3 During this sequence the balance is doing an automatic systems checkout to insure it is functioning properly When the balance is on pressing the ON OFF button will turn off the display 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 Linea
32. must be specified in the MMDDYY format and no delimiters 100 RCL CR REG 100 MM DD YY DATE CRI 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 will work see RS 232 Front Panel Configuration Section 89 RCL CR REG 089 HH MM SS INTV CR LF Returns the auto SEND time currently set interval C0 ENTER 79 STORE CR A 1 in register 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
33. n using the The current baud rate br300 br600 br1200 ON OFF button br2400 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 press SAVEd OK is displayed followed by the the ZERO button chosen baud rate and OK 4 LOCAL CONTROL SELECTION LC on is default LC on means that the front panel switches control the balance To enable a computer to control the balance LC oFF must be selected Press the MODE button The current front panel control setting LC on or LC oFF and OK are displayed Press the SEND button to choose between on or off Then press the ZERO SAVEd OK is displayed followed by the button chosen setting and OK 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 ZERO SAVEd OK is displayed followed by the button chosen setting 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 press SAVEd OK is displayed followed by the the ZERO button chosen setting and OK User Action Balance Response 7 AUTO SEND SELECTION AS oFF is default AS on means the balanc
34. nto 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 weights 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 Bac
35. 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 decimal number _PCT CR None Puts the balance on the percent weighing mode with the displayed reading converted to the percent entered 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 percent mode and un defines the percent register Command Response Purpose Decimal number ENTER integer _PIECES CR None Accepts the decimal number as a weight in last front panel units per integer
36. our 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 Scientech offers a serial cable 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 Balance Functions and Features Autocalibration CAL 1 Using an External 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 connected to an electrical outlet for at least one
37. perator 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 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
38. rity e T Live animal weighing e percent weighing To select the desired function press the MODE switch 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 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 shown above for single range balances 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 The MODE Button 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 An optional factory installed user specified custom unit of measure is available If you have this special unit of measure feature in y
39. rns 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 Turns continuous send on or off Message Formats section 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 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 designa
40. sk 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 zero 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 Security Bracket A security bracket is provided on the balance s rear panel as 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 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 and even parity To change these settings 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 button Balances only communicate with serial printers Many other accessories are
41. t shown on the remote power supply is compatible with the AC power outlet to which the balance will be connected A standard line cord is provided to connect the power supply to the electrical outlet however there are many different outlet configurations If a different line cord is required it must have an IEC connector to plug into the power supply and whatever plug is appropriate for your electrical outlet Note First plug the round DIN connector into the balance s rear panel receptacle Then plug the power supply into a grounded AC outlet Note Do not alter or bypass the ground plug in any way Doing so adversely affects the performance of the balance Note Scientech recommends that the balance be plugged into an electrical outlet at all times This insures 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 0 100 Figure 3 Turn On sequence After the balance has been plugged in and turned on allow it 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 o
42. ter industry RS 232 Specifications Type Method Format Note EIA RS 232C DTE Half duplex Asynchronous Transmission Bi directional 300 600 1200 2400 4800 9600 and 19 200 baud rate selectable default is 9600 Code ASCII For parity Even or Odd For parity none 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 RS 232 Front Panel Configuration 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 button to select the parameter to be changed skipping the others Select the desired setting using the SEND button save the setting using the ZERO button then turn the balance off and then on again with the ON OFF button 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 o
43. th 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 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 x 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 B X X X z E X X X xX xX xX x Y Y CR LF Display shows the contents of register 24 as 102 56 an additive 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
44. tor 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 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
45. uees tae cdadaa cau see cundacda E E E N EE a 12 RS 232 Front Panel Configurations oosccnrennsgnenn eii a oe o E E e EE E NE E EE EE E a o EE ie 12 Using Bi Directional Commu nications isnin ceiien e ie eE E EEEE SE E aE E ER T EEEE AE AEE es 13 Bi Directional RS 232 Command Setican rieira aii nE ad areata edhe N EEE RE ER eee 13 Type 1 Commands Balance Control Functions sss sesssesessseseesssstsesesststsstetsstetts testes tett entest Stent tSt estet ESS SE EEES S ESES Eest eS testets seeen re sees 14 Type 2 Commands Balance Input Functions c ccccescceseessecssecscessecsnecseeeseeeneeseeeseessecsecseceaecaaecaaeeaeecaeseaeeseeeeeseeenaeenseeeaeenaeenaeeaes 15 ype 3 Commands Balatice Output Functions lt csccecescecc v sds eecetscovecctevseceunsvadeoal avgeeseuseave sumovevsecen REE EARE ele E E E 16 Type 4 Commands Clock Calendar Functions ceini o E EE E ESO E ARA AEE RNE 16 RS 232 Balance Message Formats iea e e E O EA R A OEA aed AEE eae E EE E E 17 Format A Balance in the normal weighing mode s sssesssesssessssstseessesetstssteesstettsttsttstest tnts stotts testes test entesten esseet estese estese enes seet asresten 17 Format A Balance in a special weighing mode neseeseseeeerseeserseroreserereorseesersrsoessesereseseososseveereererseveersesoreressrvotsseverseseososseveereerers 17 Format B Balance in normal weighing Modeissisccennessriiinoniesii iensen s iiia E EE EE EEEE E EEE 18 Format B
46. y exceeded e Reduce container weight e Weigh sample in smaller increments e Switch to high range dual range units UL appears in display e Panis not in place Insure pan is positioned properly e Balance is out of range e Press ZERO switch The display is unstable e Drafts air currents are present e Install windscreen relocate balance e Vibrations are present e Isolate balance from vibration relocate balance Weight readings are incorrect e Balance is out of calibration e Recalibrate balance e Balance is not level e Level balance e Display was not zeroed before weight e Press ZERO switch before weighing was placed on pan e Object being weighed is touching e Reposition object windscreen or balance case top e Unit of weight selection is incorrect e Select proper weighing mode Display stays in turn on sequence e Pan not in place e Place pan on balance e Drafts or vibrations present e Isolate or relocate balance e New windscreen has been installed e Raise pan height e Power supply connected to wall outlet e Unplug power supply from wall then before balance connector re plug into wall Partially lit display weird characters displayed or garbage on the display Live cord plugged into balance Unplug power supply from the electrical outlet wait 5 seconds then plug back in Err appears in the display Procedural error Review procedure in manual and try again Err 1 appears in display Calibration weight is

User Manual - Affordable Scales & Balances

Contents

Download Pdf Manuals

Related Search

Related Contents

User Manual - Affordable Scales &amp; Balances

Contents

Download Pdf Manuals

Related Search

Related Contents

User Manual - Affordable Scales & Balances