Precisa LX 321 Operating Instructions Manual Download Page 39 | Manualshive

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16 Maintenance and servicing

38

16

Maintenance and servicing

16.1 Calibration

The calibration of the balance is fixed in the configuration menu (see Chapter 7.7 “Calibration of the balan-
ce” and Chapter 9.5 “Calibration functions”).

Possible types of calibration, depending on the model of balance:

• External calibration by means of ICM (Intelligent Calibration Mode)

• External calibration with freely selectable weight

• Internal calibration

• Automatic calibration

16.1.1 External calibration by means of ICM

Depending on the type of balance, calibration weights in steps of 10 g, 50 g, 100 g and 500 g can be used,
where the calibration weight must correspond to the precision of the balance.

For an external calibration by means of ICM, “SET CALIBRATION MODE EXTERNAL” must be selected in the
configuration menu (see Chapter 9.5 “Calibration functions”).

16.1.2 External calibration with freely selectable weight

For an external calibration with user-definable weight, “SET CALIBRATION MODE EXT. -DEF.” must be sel-
ected in the configuration menu (see Chapter 9.5 “Calibration functions”).

Then, the effective value of the calibration weight (DEF. n'nnn g) must be entered with up to tenfold preci-
sion compared with the balance.

Then proceed as follows:

NOTE

The calibration can be interrupted at any time by pressing «

ON/OFF

».

• Switch to “BALANCING” with the «

MODE

»-key

cALIBRation

• Press «

0/T

» until “CALIBRATION” appears.

- - 0000

9

• The balance carries out a Zero measurement (0.000 g is shown flashing)

- - 2000

9

• After the zero measurement the display flashes with the recommended

calibration weight

• Place the calibration weight on the pan

- - 2000

9

• The display flashes first rapidly than slowly

+ 2000

9

• Calibration is complete when the display stops flashing

NOTE

If calibration is carried out with the free weight, then only this weight may be used.

• Switch to “BALANCING” with the «

MODE

»-key

cALIBRation

• Press «

0/T

» until “CALIBRATION” appears.

- - 0000

9

• The balance carries out a Zero measurement (0000 g is shown flashing)

«
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Summary of Contents for LX 321

Page 1: ...PREMIUM Operating Instructions 350 8162 000 LX 321 ...

Page 2: ...ocal customer service centers and details of their addresses Copyright These operating instructions are protected by copyright All rights reserved No part of the operating instructions may be reproduced processed duplicated or published in any form by photocopying microfilming reprinting or other process in particular electronic means without the written agreement of Precisa Gravimetrics AG Precis...

Page 3: ...ghing 5 Levelling bubble 15 see chapter 3 Below balance weighing 6 Adjustable feet 16 see chapter 3 Below balance weighing 7 ON OFF key 17 Serial interface DB9 Female 8 MODE key 18 USB device connector for connection to PC 9 0 T key 19 Connecting socket for power adapter 10 REF key 205 SM DR Max 205g e 1mg Min 0 01g d 0 01 0 1g 1 2 3 6 4 5 LX 220A Max 220g e 0 001g Min 0 01g d 0 0001g 13 12 7 8 9 ...

Page 4: ...hing pan in position Insert the power adaptor cable plug into the socket at the rear of the balance Components supplied depending on balance type Weighing pan Pan holder Protective ring for A M and C balances Draft shield for A or M balances Balance Power adapter USB cable balance to PC Protection cover for the balance or display Short instructions Security card CD with operating instructions NOTE...

Page 5: ...o the aper ture 16 of the now visible metal casting 15 Place the balance over an opening Replace the pan holder and the weighing pan Level the balance see chapter 3 6 Levelling Switch on the balance Hang the object to be weighed on the hook and carry out the weighing WARNING Take care that the hooks used for the below balance weighing are stable enough to hold the goods which you wish to weigh NOT...

Page 6: ... only w o Glass body and Hook for 0 01mg and 0 1mg balances Container size Ø 75mm height 100mm 350 8537 Glass body 10ccm for density determination of liquids 350 7054 Downholder for samples with density 1 g cm3 350 7194 Animal weighing bowl complete for 0 01g 0 1 and 1g balances 350 8551 Diamond weighing pan 350 8322 Hook for weighing below the balance 350 8527 Dust cover for the whole balance set...

Page 7: ...g the weight unit 19 9 4 Print functions 19 9 5 Calibration functions 20 9 6 Weighing mode 20 9 7 Interface functions 22 9 8 Date and time 22 9 9 Password protection 22 9 10 Anti theft encoding 23 9 11 Keyboard settings 23 9 12 Precisa BUS 23 10 Working with the application menu 24 10 1 Structure of the application menu 24 10 2 Selecting a working program 24 10 3 Changing application weighing mode...

Page 8: ... freely selectable weight 38 16 1 3 Internal calibration 39 16 1 4 Automatic calibration 39 16 2 Software update 39 16 3 Cleaning 39 16 4 Error messages 40 16 4 1 Notes on correcting faults 40 17 Menu trees 41 17 1 Configuration menu tree 41 17 2 Application menu tree 43 17 3 User menu tree to save or load settings 43 ...

Page 9: ...ngs and lot others Statistics program Appliance for below balance weighing 5 2 Correct use of the balance The balance may only be used for the weighing of solid materials and of liquids filled into secure containers The maximum allowable load of the balance must never be exceeded otherwise the balance may be dama ged In using the balance in combination with other appliances as well as with applian...

Page 10: ...n Key names are presented in quotation marks and are accentuated by printing in semi bold script ON OFF In the explanation of the operating steps the appropriate display for the current operating step is shown for clarity at the left alongside the list of operating steps Display shows List of the Operating steps LANGUAGE ENGLISH Press MODE button repeatedly until LANGUAGE ENGLISH SPRACHE DEUTSCH o...

Page 11: ... 20 4 Cleaning The balance must not be operated in an area subject to explosion risks Take care when weighing liquids that no liquid is spilt into the inside of the balance or into connections on the rear of the equipment or the power adaptor If liquid is spilt on the balance the latter must immediately be unplugged from the mains electricity supply pull out power adaptor The balance may only be o...

Page 12: ...ay attention to the safety recommendations see chapter 6 Safety 7 2 Transport and shipping Your balance is a precision instrument Treat it with care Avoid shaking severe impacts and vibration during the transportation Take care that there are no signification temperature fluctuations during the transportation and that the bal ance does not become damp condensation 7 3 Storage If you would like to ...

Page 13: ...ate for the gravity at each location This adjustment process known as calibration must be carried out on initial installation and after each subsequent reloca tion In order to get exact measurements it is recommended moreover that the balance should also be cal ibrated periodically NOTE With difficult conditions where the balance may be easily shaken or subject to vibration the balance can neverth...

Page 14: ... the coarse range The Floating Range balances have a fine range 10 times more precise which moves over the entire weight range By pressing the tare key 0 T the fine range can be called up as often as required over the entire weight range 7 9 Standardized balance The standardized balances are provided with the EC OIML certification or meet the local standardisation reg ulations The balance range an...

Page 15: ...he Standby mode back to the weighing mode again 8 3 Setting and storing the configuration Press ON OFF to switch on the balance Continue to hold down the MODE and the 0 T button during the start up process until the desired configuration appears on the display and then release the button LOAD FACTORY CONFIG Load factory configuration LOAD USER CONFIG Load user configuration STORE USER CONFIG Store...

Page 16: ...ferent function programs of the balance are defined Moving in the menu path MODE short In path to the right or start input MODE long In path downwards PRINT button In path to the left in main path exit menu Input MODE short Change value or position MODE long Change one position to the right or terminate input PRINT button Terminate input 8 6 1 Operating in the weighing mode Name Function during we...

Page 17: ...ainst uninten tional changes With high password protection activated both the configuration menu and the application menu are pro tected against unintentional changes Only after entering the correct four figure password can changes be made to the configuration menu and the application menu 8 8 Anti theft encoding The balance can be protected against theft by a freely selectable four figure numeric...

Page 18: ...the power supply then reconnected and un blocked by entering the correct four figure code After seven consecutive incorrect entries the display will read NO ACCESS CALL SERVICE In this case only service can unblock the balance again To activate the anti theft encoding and to alter the code programmed in the works to one which you have chosen yourself see Chapter 9 10 Anti theft encoding NOTE The a...

Page 19: ... alter the language proceed as follows Switch off balance Switch on balance and depress MODE until the currently activated language is shown Release MODE Press MODE repeatedly until the language you require is shown Press PRINT in order to confirm the selection Press PRINT in order to quit the menu Menu Definable functions LANGUAGE Display language E G F UNIT 1 Unit in which the weighing results a...

Page 20: ...g Kilogramme 1000 g GN Grain 0 06479891 g dwt Pennyweight 1 555174 g ozt Troy ounce 31 10347 g oz Ounce 28 34952 g Lb Pound 453 59237 g ct Carat 0 2 g C M Carat Metric 0 2 g tLH Tael Hong Kong 37 4290 g tLM Tael Malaysia 37 799366256 g tLT Tael Taiwan 37 5 g mo Momme 3 75 g t Tola 11 6638038 g Bht Baht 15 2 g SET DATA PRINT AUTOSTART ON OFF Start print automatically on switching on off MODE UNSTAB...

Page 21: ... and Chapter 8 6 How the menu control operates For the calibration of the balance see Chapter 7 7 Calibration of the balance and Chapter 16 1 Calibrati on 9 6 Weighing mode To activate the menu see Chapter 8 5 Activating the two main menus and Chapter 8 6 How the menu control operates PRODUCTMODEHOLD DELETE COUNT OPERATORttt SET CALIBRATION MODE OFF Closed EXTERNAL External EXT DEF External with u...

Page 22: ... Auto Standby Briefly press any key Put a weight on the balance Make a remote control command via the interface If the automatic zero correction AUTO ZERO is activated the balance always gives a stable zero e g even with fluctuations in room temperature The QUICK TARE forces the balance to perform a tare immediate when pressing 0 T or sending the re mote command to tare independent of the stabilit...

Page 23: ...tivate the menu see Chapter 8 5 Activating the two main menus and Chapter 8 6 How the menu control operates SET INTERFACE BAUDRATE 300 600 1200 2400 4800 9600 19200 38400 57600 Select baud rate PARITY 7 EVEN 1STOP 7 ODD 1STOP 7 NO 2STOP 8 NO 1STOP 8 EVEN 1STOP 8 ODD 1STOP Select parity HANDSHAKE NO XON XOFF HARDWARE Select handshake function PC DIRECT MODE ON OFF Set PC direct mode CHARACTER SET E...

Page 24: ... and Chapter 8 6 How the menu control operates If the KEY TONE is switched on a short audio signal sounds each time a key is pressed The USER GUIDANCE is illuminating this keys which has function in the current context The KEY SENS let you adjust the sensitivity of the touch keys according you preferences and your obli gations like e g wearing gloves 9 12 Precisa BUS To activate the menu see Chapt...

Page 25: ...ontrol operates for the activation of the application menu In this function field select the desired working program If a working program is selected in the SET APP menu then only those sub menus which contain functions and parameters necessary to define the chosen working program are shown in the SETUP APPLI CATION menu To activate the menu see Chapter 8 5 Activating the two main menus and Chapte...

Page 26: ...ght screws balls coins etc Operation Start the application see Chapter 10 3 Changing application weighing mode Place a number of objects on the weighing pan Press the REF button until the reference quantity appears on the display If the reference quantity is correct release the REF button Otherwise hold down the REF button The pre defined values will appear 1 10 25 50 As soon as the desired value ...

Page 27: ...n size directly into gram per cubic metre Operation Start the application see Chapter 10 3 Changing application weighing mode Press the REF button until CALCULATION name appears on the display Release the REF button 10 8 Application Net Total There is no Setup menu for this application With the aid of the NET TOTAL application you can add individual weighings where the balance is tared to zero aga...

Page 28: ...0 Application Animal weighings See Chapter 8 5 Activating the two main menus and Chapter 8 6 How the menu control operates for the activation of the Application menu With the aid of the ANIMAL program you can weigh living animals accurately even if they move on the scale pan The balance measures continuously throughout the period defined by the user in the Setup menu averages the stored values at ...

Page 29: ...water is poured into a bowl placed on the scale pan and tared The solid is then placed into the liquid and weighed Subsequently the solid is suspended so that it is still completely immersed in the water but no longer touches the base It is weighed again SETUP APPLICATION DENSITY MODE SOLID ON BOTTOM MODE SOLID IN AIR MODE LIQUID MODE SOLID POROUS Solid body Solid under floor Measure liquids Solid...

Page 30: ...re for the density measu rement 10 12 Application DIAGNOSTICS See Chapter 8 5 Activating the two main menus and Chapter 8 6 How the menu control operates for the activation of the application menu There is no Setup menu for this application With the aid of the DIAGNOSTICS program you can verify the performance of your balance The internal weight is measured 10 times and the standard deviation is c...

Page 31: ...ex ternal weight again measurement 1 EXIt The balance repeates this measurements for 10 cycles 0 00008 9 The standard deviation of the measurement is calculated and displayed and a report is printed STANDARD DEV exit Press REF to exit the repeatability test at anytime SET STATISTIC STATISTIC MODE OFF STATISTIC RECORDER STAT RECORDER Statistics program off Statistics only Data storage only Statisti...

Page 32: ...NUAL recoding press REF shortly to store a second measure ment For LOADCHANGE just place a new load For TIMEBASE wait until the time period set is over sto 1 res inf 3 4775 9 Store a third measurement in the same manner as for the second measure ment sto 2 res inf Retrieve the parameters 3 4775 9 Press REF until INF flashes to show the info display with Average measurement mean 3 4780 9 3 4775 9 S...

Page 33: ... Chapter 10 3 Changing application weighing mode Clear measurements 3 4775 9 Press REF until RES flashes A acoustic signal sounds and the measurement counter is reset sto 3 res inf 3 4775 9 Measurement cleared balance ready for new statistics sto 0 res inf A statistics log is printed by pressing the PRINT key SET CHECK CHECK MODE ON OFF NOM 100 000 g TO 120 000 g TU 80 000 g Switch application on ...

Page 34: ... reset to 1 Print out a balance status Ensure that the balance is in the weighing mode Keep PRINT pressed until PRINT STATUS is displayed Release PRINT The balance status will be printed out Print out the application setup Ensure that the balance is in the weighing mode Keep PRINT pressed until PRINT APPLICATIONS is displayed Release PRINT The application setup will be printed out Print out the ca...

Page 35: ...7 even 1 SB 1 DA 2 DA 3 DA 4 DA 5 DA 6 DA 7 DA PB SP 7 odd 1 SB 1 DA 2 DA 3 DA 4 DA 5 DA 6 DA 7 DA PB SP 7 no 2 SB 1 DA 2 DA 3 DA 4 DA 5 DA 6 DA 7 DA 1 SP 2 SP 8 no 1 SB 1 DA 2 DA 3 DA 4 DA 5 DA 6 DA 7 DA 8 DA SP 8 even 1 SB 1 DA 2 DA 3 DA 4 DA 5 DA 6 DA 7 DA 8 DA PB SP 8 odd 1 SB 1 DA 2 DA 3 DA 4 DA 5 DA 6 DA 7 DA 8 DA PB SP SB Start bit PB Parity bit DA Data bit SP Stop bit S D7 D6 D5 D4 D3 D2 D...

Page 36: ... decimal places k A use automatic positioning of decimal point REF k rrr Set reference weight rrr for 100 with k 0 7 decimal places k A use automatic positioning of decimal point Rnnn Set current weight nnn items REFrrr Set reference weight rrr for 1 item Sn Set stability n n 0 low n 1 medium n 2 high SDTttmmjjhhmmss Set date and time German Tag Monat Jahr Stunde Minute Sekunde SDTmmddyyhhmmss Set...

Page 37: ...LANGUE FRANCAISE or LANGUAGE ENGLISH LANGUAGE ENGLISH Press MODE repeatedly until the desired language is displayed the display will flash Hold down MODE until entry is complete display ceases to flash or press PRINT Press PRINT to exit menu unit 1 9 Press MODE and hold down until the currently set unit appears Release the MODE button unit 1 oz Press MODE repeatedly until the desired unit is displ...

Page 38: ...ord Hold down MODE until input is complete no digit flashing DATA PROTECTION OFF Press MODE briefly DATA PROTECTION will appear Press MODE repeatedly until the desired data protection is displayed the setting will flash new PASSWORd 7914 Press MODE and hold down button until NEW PASSWORD 7914 appears Release the MODE button new PASSWORd 1234 Your own new password can now be entered in a similar ma...

Page 39: ...lectable weight For an external calibration with user definable weight SET CALIBRATION MODE EXT DEF must be sel ected in the configuration menu see Chapter 9 5 Calibration functions Then the effective value of the calibration weight DEF n nnn g must be entered with up to tenfold preci sion compared with the balance Then proceed as follows NOTE The calibration can be interrupted at any time by pres...

Page 40: ...e Downloads area on the website This can then be loaded into the instrument with the aid of the download tool 16 3 Cleaning The balance must be treated carefully and cleaned regularly It is a precision instrument 372 9 After the zero measurement the display flashes with the previously en tered calibration weight Place the calibration weight on the pan 372 9 The display flashes first rapidly than s...

Page 41: ...t switched on Connection to power adaptor is interrupted Power supply has failed interruption to current The power adaptor is defective OL is shown in display The weight range has been exceeded Observe information on the maximum weight range UL is shown in display The weight range is below the range of the balance Scale pan or scale pan holder missing The weight display fluctuates continuously The...

Page 42: ... TIME ON OFF BALANCE ID ON OFF PRODUCT ID ON OFF GROSS AND TARE ON OFF UNITS ON OFF OPERATOR ID ON OFF LINEFEED OFF 1 2 9 FORMFEED PRODUCT ttt PRODUCTMODE HOLD DELETE COUNT OPERATOR ttt SET CALIBRATION MODE OFF EXTERNAL EXT DEF INTERNAL AUTO DEF 0 000 g AUTOCAL TIME TEMP TEMPERATURE TIME AUTOCAL TIME 6 h AUTO WARNING ON OFF REPORT ON OFF SET WEIGHING MODE FLOATINGDISPLAY 0 08 0 16 0 32 STABILITY L...

Page 43: ...TOP 8 ODD 1STOP HANDSHAKE NO XON XOFF HARDWARE PC DIRECT MODE ON OFF CHARACTER SET ENG GER FRA FORMAT LINES TABLE SET DATE AND TIME TIME HH MM SS DATE DD MM YY FORMAT STANDARD US PASSWORD PASSWORD DATA PROTECTION OFF MED HIGH NEW PASSWORD THEFTCODE THEFTCODE THEFT PROTECTION ON OFF NEW CODE KEYBORARD KEY TONE ON OFF USER GUIDANCE ON OFF KEY SENS LOW MEDIUM HIGH VERY HIGH BUS BUS ON OFF ...

Page 44: ...r 9 Application SETUP APPLICATION Division depends on the current application Chapter 9 Application SET STATISTIC MODE OFF STATISTIC RECORDER STAT RECORDER COUNT 100 RECORDING MANUAL TIMEBASE LOADCHANGE TMEBASE 2 0 SET CHECK MODE ON OFF NOM 100 000 g TO 120 000 g TU 80 000 g AUTO START AUTO START ON OFF LOAD FACTORY CONFIG Load factory configuration LOAD USER CONFIG Load user configuration STORE U...

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