Vetek AS Series User Manual
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Vetek AS Series User Manual

Precision balance
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User manual no.
LMI-16-09/05/12/A
PRECISION
BALANCE
AS SERIES
PRECISION
BALANCE
AS/CT SERIES
M A N U F A C T U R E R
O F E L E C T R O N I C W E I G H I N G I N S T R U M E N T S
RADWAG 26 – 600 Radom, Bracka 28, POLAND
phone +48 48 38 48 800, fax. +48 48 385 00 10
e-mail: export@radwag.com
www.radwag.com
Box 79, S-76040 Väddö, Sweden, Tel +46176-208920, info@vetek.com, www.vetek.com

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  • Page 1 O F E L E C T R O N I C W E I G H I N G I N S T R U M E N T S RADWAG 26 – 600 Radom, Bracka 28, POLAND phone +48 48 38 48 800, fax. +48 48 385 00 10 e-mail: export@radwag.com www.radwag.com Box 79, S-76040 Väddö, Sweden, Tel +46176-208920, info@vetek.com, www.vetek.com...
  • Page 2 MAY 2012 - 2 -...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. TECHNICAL DATA ................5 2. BASIC INFORMATION ................7 2.1. Intended use ....................7 2.2. Inappropriate use..................7 2.3. Warranty ..................... 7 2.4. Monitoring metrological parameters of the instrument ........ 8 2.5. Data included in this user manual............... 8 2.6.
  • Page 4 12.4.1. Internal adjustment ..............41 12.4.2. External adjustment ..............42 12.5. Adjustment report printout ................ 43 13. DETERMINING CONTENT OF A PRINTOUT FOR GLP PROCEDURES ................44 14. BALANCE WORKING MODES ............47 14.1. Parts counting of the same mass ............. 48 14.2.

  • Page 5: Technical Data

    1. TECHNICAL DATA 60/C/2 60/220/C/2 110/C/2 160/C/2 220/C/2 310/C/2* Max capacity 60/220g 110g 160g 220g 310g Minimum 10 mg 10 mg 10 mg 10 mg weight Readability 0,01mg 0,01/0,1mg 0,1 mg 0,1mg 0,1mg 0,1mg Tare range -60g -220g -110 g -160 g -220 g -310 g...
  • Page 6 Dimensions Balance series: AS 60/C/2 AS 60/220/C/2 AS 110/C/2 AS 160/C/2 AS 220/C/2 AS 310/C/2 Balance series: APS 120/C/2/CT APS 220/C/2/CT APS 320/C/2/CT - 6 -...

  • Page 7: Basic Information

    2. BASIC INFORMATION 2.1. Intended use Analytical balance AS series serves to determine the weighing value of loads in laboratory environment. It is intended for application as a non-automatic weighing instrument only, i.e. the material to be weighed is manually and carefully placed in the center of the weighing pan.

  • Page 8: Monitoring Metrological Parameters Of The Instrument

    2.4. Monitoring metrological parameters of the instrument Metrological characteristics of the balance requires periodical inspection carried out by its operator. Inspection frequency is conditioned by ambient conditions in which the balance is used, types of performed processes and accepted quality management system in an organization. 2.5.

  • Page 9: Unpacking, Assembling And Startup

    4. UNPACKING, ASSEMBLING AND STARTUP 4.1. Assembling, and place of use • Balance should be stored and used in locations free of vibrations and shakes, free of air movement and dust, • Ambient air temperature should not exceed the range of: +10 C ÷...

  • Page 10: Unpacking

    4.2. Unpacking Carefully remove the balance from its packaging, remove the plastic and foil transport protective elements and gently place the balance in its intended place of use. Assemble the weighing pan, and other elements according to below scheme: Balance with weighing pan Φ 70 mm: - open side doors of the weighing chamber, - inside the weighing chamber place lower...

  • Page 11: Leveling

    Balance with weighing pan Φ 85 mm: - open side doors of the weighing chamber, - inside the weighing chamber place lower shield of the weighing chamber (1), - put centering ring (2) [framing facing downwards] onto the weighing chamber’s shield, - in the center of centering ring assembly the weighing pan (3), - assembly anti-draft shield (4) inside...

  • Page 12: Standard Equipment

    4.4. Standard equipment • Balance. • Weighing pan and protecting (anti-draft) components. • Power adapter. • User manual. 4.5. Cleaning Balance should be cleaned with damp cloth by gentle wiping the smudges of dirt. In order to clean the weighing pan of the balance, please remove it from the weighing chamber.
  • Page 13 Continuous data transmission in current measuring unit <Cntb>, Automatic operation mode <rEPL>. Balance As series can be used to weigh loads under the weighing platform – i.e. under hook weighing option. Balance software enables printing a report from adjustment process and carrying out adjustment test.

  • Page 14: Keyboard

    6. KEYBOARD ON/OFF key; enables turning on and off balance’s display. If turned off, balance components other than the display are powered, and balance is in stand-by mode. F key; function key. MODE key; for selecting working mode. UNITS key; changes measuring units. PRINT/ENTER key;...

  • Page 15: Start-Up

    7. START-UP When plugged to mains, the balance displays name and number of software, and afterwards proceeds to weighing mode. Balance temperature stabilization period. Before start of measuring processes, it is necessary to wait until the balance is thermally stabilized. It is a period of so called balance self-heating. In case of balances AS and APS series self-heating period takes approximately 30 minutes.

  • Page 16: User Menu

    USER MENU Balance menu is divided into 7 basic function groups. Each group has individual name starting with capital letter P. 8.1. Moving through user menu An operator moves through balance menu using keys on overlay’s keyboard: Entering main menu. F function key. Selecting group of parameters one by one downwards or changing parameter value by one value downwards.
  • Page 17 [Good Laboratory Practice] P2 GLP P2.1 USr [name of user] P2.2 PrJ [name of project] P2.3 Ptin YES/no [printout of measurement time] P2.4 PdAt YES/no [printout of measurement date] P2.5 PUSr YES/no [printout of user name] P2.6 PPrJ YES/no [printout of project name] P2.7 PId YES/no [printout of balance’s factory number]...

  • Page 18: Return To Weighing Mode

    P6.3 HiLo YES/no [checkweighing] P6.4 PrcA YES/no [percent setup with reference to weighed standard] P6.5 Prcb YES/no [percent setup with reference to declared standard] P6.6 d_Co YES/no [density determination of solids] P6.7 d_Li YES/no [density determination of liquids] P6.8 Pi_t YES/no [pipettes calibration] P6.9 Fill...
  • Page 19 - 19 -...

  • Page 20: Weighing

    9. WEIGHING Before start of weighing process or in case of essential change of ambient conditions at a workstation (e.g. ambient temperature change at a workstation more than 0,8°C) the balance requires adjusting. The procedure of balance adjustment is described further in this user manual. •...

  • Page 21: Selection Of Basic Measuring Unit

    9.1. Selection of basic measuring unit Function is used to set the measuring unit which will be displayed on balance switching on. In order to set the measuring unit go to submenu P5 Units press UNITS key for a few times. The display indicates available measuring units in turns.

  • Page 22: Temporary Measuring Unit

    After selecting the basic measuring unit press PRINT key. The balance returns to displaying parameter name. Available settings: • For verified balances, a user can select from the following measuring units: [g], [mg], [ct]; • For non-verified balances, a user can select from the following measuring units: [g], [mg], [ct], [oz], [ozt], [dwt], [t], [mom], [gn].

  • Page 23: Setting Accessibility Of Balance Working Modes

    9.3. Setting accessibility of balance working modes This group of parameters enables the user to declare functions (working modes) which are accessible on pressing of MODE key. Enter group of parameters P6 Func, 9.3.1. Selection of working modes available for a user Function enables selecting (by pressing MODE key) which working modes are accessible during weighing function –...
  • Page 24 After setting the parameter press PRINT key. Balance goes back to displaying submenu name P6.1 FFun. If a mode other than ALL is selected, procedure of returning to weighing mode differs from other ones. If for instance PcS mode is selected, follow procedure in accordance with point 14.1 point, to return to weighing: - 24 -...

  • Page 25: Means Of Selecting One Of Available Working Modes

    Press Esc/TARE key, balance returns to weighing. 9.3.2. Means of selecting one of available working modes Balance user can enable or disable modes which are not used in the weighing process. This provides quicker access to modes used on a balance.
  • Page 26 - mode available; - mode disabled On making a choice press PRINT key. The balance returns to displaying submenu name. Go back to weighing mode with procedure of saving changes (see point - 7.1.2. – return to weighing). - 26 -...

  • Page 27: Balance Main Parameters

    10. BALANCE MAIN PARAMETERS It is possible to adjust balance’s operation to ambient conditions at a workstation (by setting filter range and value release parameters) or user requirements (autozero settings, last digit visibility). These parameters are set in group P3 rEAd.

  • Page 28: Value Release

    10.2. Value release Due to various ambient conditions at workstations, and in order to set balance to present conditions, it is necessary to determine the value release parameter as: FAST_rEL, Fast or rEL. Depending on selected option, weighing time will be shorter or longer.

  • Page 29: Autozero Function

    10.3. Autozero function In order to ensure balance’s precise mass indication, autozero (Auto) software parameter has been introduced. The application of this function is automatic control and correction of zero indication. When function is enabled, compares balance indications at declared time interval e.g. 1 s, on conditions that weighing pan is unloaded and display indication is close to zero.

  • Page 30: Blanking Of Last Digit On The Display

    10.4. Blanking of last digit on the display Function enables blanking of the last displayed digit. – always ALuuAYS – never nEuEr – when measurement result is stabilized. uu_StAb Return to weighing mode with procedure of saving changes (see point – 8.2. – return to weighing). - 30 -...

  • Page 31: Weighing Mode Rapid

    10.5. Weighing mode RAPID Weighing mode RAPD is located in menu parameter P3.rEAd and it offers two options: RAPID = NO – balance operates with settings as set in menu AUE and CONF, i.e. standard weighing. RAPID = YES – (default settings) balance operates with settings specific for software mode “FILL”, and: The value of CONF parameter is automatically set to: Fast+rel, independently on previous setting of this parameter;...

  • Page 32: Other Parameters

    11. OTHER PARAMETERS Balance AS series features a set of parameters which enable influencing its functionality. The parameters are contained in group: P7 othEr and they are: backlight and “beep” signal and printout of all balance parameters through RS 232 port.

  • Page 33: Beep" Sound - Reaction On Pressing A Function Key

    11.2. “Beep” sound – reaction on pressing a function key – signal of pressing function key disabled – signal of pressing function key enabled. Return to weighing mode with procedure of saving changes (see point – 8.2. – return to weighing). 11.3.

  • Page 34: Balance Adjustment

    12. BALANCE ADJUSTMENT As the gravitational acceleration force has different value at various latitudes and altitudes, a balance should be adjusted to present working conditions. This process should take place at the first installation of the instrument on site and at its every re- location –...

  • Page 35: Internal Adjustment

    12.1. Internal adjustment Adjustment process can be initiated automatically or manually. Manual means of activating adjustment procedure is realized by pressing F key on balance’s keyboard. System of automatic adjustment will carry out the process fully automatically inform the operator on successive process stages. Cycle of automatic adjustment process: balance software detects necessity of carry out adjustment and signalizes it by Celsius degree pictogram or by black colour pictogram on...
  • Page 36 • Balance AS series is equipped with very precise system for monitoring temperature. At each adjustment process, the temperature is saved in system. The next adjustment is automatically initiated if temperature changes more than: 0,8°C from last saved temperature...

  • Page 37: Settings Of Menu: Adjustment

    12.2. Settings of menu: Adjustment P1 CAL P1.1 iCAL P1.2 ECAL P1.3 tCAL P1.4 ACAL both P1.5 CALt P1.6 CALr • P1.1 iCAL – Internal adjustment Start of internal adjustment process. Adjustment is conducted automatically, and no operator assistance is required. If weighing pan of the balance is loaded, balance will display a command to unload the weighing pan.
  • Page 38 Determination of factor, which conditions start of automatic internal adjustment. - none of factors will cause start of adjustment nonE - adjustment triggered by change of temperature tEmP - adjustment triggered by time interval set in parameter P1.5 CALt timE - adjustment triggered by time and temperature.
  • Page 39 • P1.5 CALt - Time of automatic adjustment (balances with internal adjustment system) Determination of time interval, after which automatic adjustment process is initiated. • P1.6 CALr – printout of adjustment report Printout activated on completion of automatic adjustment procedure. –...

  • Page 40: Adjustment Test

    12.3. Adjustment test Adjustment test is a comparison of internal adjusting weight with its value stored in balance’s memory. This process is automatic and its result is shown on the display (if a balance is connected to a computer or a printer through RS 232 socket, data on adjustment test is printout).

  • Page 41: Manual Adjustment

    12.4. Manual adjustment 12.4.1. Internal adjustment Press F function key for three (3) times. The balance automatically enters internal adjustment mode. During adjustment process do not load the weighing pan with any load. On completion of adjustment process, balance saves its result in memory and returns to weighing mode.

  • Page 42: External Adjustment

    12.4.2. External adjustment The external adjustment in balances AS series should be carried out with an external mass standard / weight class E Start of external adjustment process, Balance will display a command ordering unloading of weighing pan unloAd (weighing pan should be empty). When weighing pan is unloaded, press PRINT key.

  • Page 43: Adjustment Report Printout

    12.5. Adjustment report printout On completion of any type of adjustment process, the balance enables preparing a report from adjustment process. The report can be printed on a connected printer and sent to a computer and saved in a form of file for records.

  • Page 44: Determining Content Of A Printout For Glp Procedures

    13. DETERMINING CONTENT OF A PRINTOUT FOR GLP PROCEDURES P2 GLP, is group of the parameters which enables declaring variables that are present on an adjustment printout and printout activated after a measurement. P2 GLP P2.1 P2.2 P2.3 Ptin P2.4 PdAt P2.5 PUSr...
  • Page 45 Accessible characters and their equivalents displayed by the balance: An instance of a user name inserted to a balance using capital letters takes below form: OP1_WILK (operator 1 WILK) An instance of a user name inserted to a balance using small letters takes below form: op1_wilk (operator 1 wilk) •...
  • Page 46 An instance of project name inserted to a balance using small letters takes below form: prradwag • P2.3 Ptin Option determining presence of measurement time on a printout. • P2.4 PdAt Option determining presence of measurement date on a printout. •...

  • Page 47: Balance Working Modes

    14. BALANCE WORKING MODES Weighing mode – bASic Parts counting – PcS Checkweighing – HiLo Percent setup with reference mass determined by weighing – PrcA Percent setup with reference mass determined by a user – PrcB Density determination of solids – d_Co Density determination of liquid –...

  • Page 48: Parts Counting Of The Same Mass

    Pressing MODE key causes displaying the first available mode. Each next pressing of UNITS or MODE keys causes displaying name of next available mode. The means of setting a working mode is described in further section of this manual. 14.1. Parts counting of the same mass Balance in its standard version is equipped with an option for counting parts and small objects of the same unit mass.
  • Page 49 • Press UNITS key to set sample quantity 10, 20, 50 or FrEE, - 49 -...
  • Page 50 • in order to select one of the options, e.g. 20 pcs press PRINT key and proceed as shown on below figure, - 50 -...
  • Page 51 • If option FrEE (sample quantity is declared by a user) is selected, insert sample quantity used for determining mass of single part, • Press F key to select a digit to be altered, and press UNITS key to change digit value, •...
  • Page 52 Return to weighing CAUTION: While determining sample quantity, and before accepting it, it is necessary to wait until stable measurement pictogram is displayed. Only if visible on balance’s display, it is allowed to accept the declared quantity of parts by pressing PRINT key. Otherwise balance will not accept the measurement.

  • Page 53: Checkweighing (Hilo) With Reference To Set Standard

    14.2. Checkweighing (HiLo) with reference to set standard • Enter the checkweighing mode, During setting limit values the following relations occur: - 53 -...
  • Page 54 SET LOW LIMIT (LOW THRESHOLD) F - digit selection; UNITS set digit value; PRINT - accept inserted digit value SET HIGH LIMIT (HIGH THRESHOLD) F - digit selection; UNITS - set digit value; PRINT - accept inserted digit value - 54 -...
  • Page 55 CAUTION: If by mistake the value of low threshold is set higher than high threshold, balance will indicate error message and return to weighing. Return to weighing: - 55 -...

  • Page 56: Percent Setup

    14.3. Percent setup Balance software enables controlling deviation (in %) of weighed loads with determined reference mass. Mass of a reference load can be determined by its weighing (PercA) or entered to balance memory by a user (PercB). 14.3.1. Reference mass determined by weighing •...

  • Page 57: Reference Mass Set In Balance Memory By A User

    • after few seconds indication 100,00% will be displayed. From now on the display will not indicate mass of weighed load but deviation of mass placed on the pan in relation to the reference (in %). 14.3.2. Reference mass set in balance memory by a user •...
  • Page 58 • Determine the value of reference mass, insert it to balance memory and accept it by pressing PRINT key – display will indicate: 0,00% From now on the display will not indicate mass of weighed load but deviation of mass placed on the pan in relation to the reference (in %). Return to weighing - 58 -...

  • Page 59: Working Mode Fill

    14.4. Working mode FILL Working mode FiLL enables two settings: FiLL = NO – mode disabled, i.e. not available in the working modes. FiLL = YES – mode enabled, i.e. available in the working modes. If FiLL is enabled, then the balances operates with settings, that are stored in balance’s settings as default and ensuring quicker operation.

  • Page 60: Density Determination Of Solids And Liquids

    14.5. Density determination of solids and liquids Optional equipment of balances AS series is a kit for determining density of solids and liquids. In order to assemble the density kit on the balance, remove the weighing pan and anti-draft shield from the balance. In the place of the weighing pan assemble the weighing pan with stand (1) and place beaker’s...

  • Page 61: Density Determination Of Solids

    4. Beaker. 11. Bottom weighing pan. 5. Thermometer handle. 12. Supplementary weights 13. Additional stand for set of pans or a 6. Thermometer. sinker 14. Additional set of pans for determining 7. Sinker’s flexible density of solids, which density is lower connector.

  • Page 62: Pipettes Calibration

    14.6. Pipettes calibration Structure of pipettes calibration mode is very clear and intuitive. Basically, it requires inserting data on ambient conditions, parameter of calibration process and parameters of a tested pipette. 14.6.1. Data input In order to start pipettes calibration mode and input required parameters for calibration process, follow the instruction from below figures: •...

  • Page 63: First Measuring Series

    • Set h – set humidity of a weighing room in which pipettes calibration is conducted (10 ÷ 95 %), • – initial volume of a pipette (inserted by laboratory assistant), • – 50% of pipette volume (inserted by laboratory assistant), •...

  • Page 64: Second Measuring Series

    14.6.3. Second measuring series The second series of measurements is a continuation of first one and procedure is conducted as in case of the first one: - 64 -...

  • Page 65: Third Measuring Series

    14.6.4. Third measuring series Third series of measurements is continuation of the second series (procedure does not change). As the third series is completed, balance will display a message on completion of calibration process (test End). Using RS 232 output balance will send a report from pipettes calibration to a printer or computer connected to the output.
  • Page 66 An example of a printout from pipettes calibration: • – respectively: initial volume, 50% of pipette volume and nominal pipette volume, • – arithmetic mean from measurement series, • – value of systematic error, • – value of repeatability standard deviation. - 66 -...

  • Page 67: Rs 232 Functions

    15. RS 232 FUNCTIONS P4 Print P4.1 bAud 4800 P4.2 CntA P4.3 CntB P4.4 rEPl P4.5 PStb P4.6 0.005 P4.1 bAud - baud rate setting (speed of transmission) P4.2 CntA - continuous data transmission in basic measuring unit P4.3 CntB - continuous data transmission in current measuring unit P4.4 rEPl - setting operation mode for RS 232 output (manual / automatic) P4.5 PStb - stable / unstable measurement for RS 232 transmission...

  • Page 68: Continuous Transmission

    Select required baud rate value - 2400 bit/s - 4800 bit/s - 9600 bit/s - 19200 bit/s. Return to weighing mode with procedure of saving changes (see point – 8.2. – return to weighing). 15.2. Continuous transmission 15.2.1. Continuous transmission in basic measuring unit –...

  • Page 69: Continuous Transmission In Current Measuring Unit

    15.2.2. Continuous transmission in current measuring unit – continuous transmission disabled – continuous transmission enabled. Return to weighing mode with procedure of saving changes (see point – 8.2. – return to weighing). - 69 -...

  • Page 70: Setting Operation Mode For Rs 232 Interface

    15.3. Setting operation mode for RS 232 interface – manual operation (enabled on pressing PRINT key) – automatic operation (enabled on stabilization of weighing result). Return to weighing mode with procedure of saving changes (see point – 8.2. – return to weighing). Automatic operation takes place according to the following scheme: ...

  • Page 71: Determination Of Data Type Sent Via Rs 232 Output

    15.4. Determination of data type sent via RS 232 output – sending stable or temporary (unstable) weighing result – sending stable weighing result. Return to weighing mode with procedure of saving changes (see point – 8.2. – return to weighing). - 71 -...

  • Page 72: Minimum Mass Required For Activating Automatic Printout

    15.5. Minimum mass required for activating automatic printout Balance software is equipped with a function for setting automatic operation. While in automatic operation, data will not be transmitted through RS 232 to a connected computer or printer until mass reading is above Lo value. •...

  • Page 73: Cooperation With A Printer Or A Computer

    16. COOPERATION WITH A PRINTER OR A COMPUTER CAUTION A peripheral device that is connected to RS 3232 output of a balance, has to be powered from the common low voltage power network equipped with common anti-shock protection in a way to preclude possible occurrence of different potentials in zero cables of the peripheral device and the balance.

  • Page 74: Cross-Section Through Connecting Conductors

    16.1. Cross-section through connecting conductors BALANCE COMPUTER 2 (RxD) 3 (TxD) 3 (TxD) 2 (RxD) 4 (DTR) 6 (DSR) 5 (GND) 5 (GND) 6 (DSR) 6 (DTR) 7 (RTS) 8 (CTS) 8 (CTS) 7 (RTS) - 74 -...

  • Page 75: Printing Date With Specified Date And Time

    16.2. Printing date with specified date and time Every weighing result can be printed with specification of measurement date and time. The presence of date and time on a printout is conditioned by connection of printers type Kafka 1/Z or Kafka SQ S to a balance. When connected, go to balance menu and set parameters from group P2 GLP: - YES PdAt...

  • Page 76: Format Of Data Sent On Pressing Of Print Key

    16.4.1. Format of data sent on pressing of PRINT key Depending on setting of P4.5 PStb parameter only stable measurement or instantaneous mass indication will be sent. CAUTION: For verified balances printout of instantaneous measurement data is blocked. Printout format 4 - 12 14 - 16 stability marker...
  • Page 77 1 – 3 8 – 16 18 - 20 Command – 1 ÷ 3 characters stability marker – [space] if stable – [?] if unstable – [^] if there is an error of range exceeding on + – [v] if there is an error of range exceeding on - sign –...

  • Page 78: Under Hook Weighing

    Such means of operation requires placing a balance on a uplifted position. RADWAG offers a rack for under hook weighing. The rack is an optional equipment offered for balances AS series. For under hook weighing follow below procedure: •...

  • Page 79: List Of Commands: Computer - Balance

    18. LIST OF COMMANDS: COMPUTER – BALANCE • Function TARE Command T CR LF (balance tarring) • Function ZERO Command Z CR LF (balance zeroing) • Function IMMEDIATELY SEND WEIGHING RESULT IN BASIC MEASURING UNIT Command SI CR LF (immediately send of balance indication) •...

  • Page 80: Error Messages

    CAUTION If a non-existing or incorrect command finished with CR LF will be sent to a balance, it responses with ES CR LF. Space between characters should be omitted, as they are added only for the purpose of proper legibility. 19.

  • Page 81: Additional Equipment

    20. ADDITIONAL EQUIPMENT 20.1. Anti-vibration table It is a very stable basis which eliminates all kinds of vibrations and ground shakes. The inner part of the table holds a marble plate, which is a foundation for balance positioning. 20.2. Rack for under hook weighing The rack is used if under hook weighing option has to be applied.

  • Page 82: Computer Software

    20.5. Computer software PW-WIN 2004 - gathering data. Data is gathered in tabiular or chart format. It is possible to calculate statistics from a series of weighing records. RAD-KEY 2000 – implements a set of commands for controlling a balance, e.g. tarring, start of continuous transmission, cyclic commands set to a balance.

This manual is also suitable for:

As 60/220/c/2As 110/c/2As 160/c/2As 310/c/2As 220/c/2Aps 120/c/2/ct ... Show all

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