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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...
Table of Contents TECHNICAL DATA ................. 7 BASIC INFORMATION ..............9 2.1. Intended use ..................9 2.2. Inappropriate use .................. 9 2.3. Warranty ....................9 2.4. Monitoring the metrological parameters of the instrument ....10 2.5. Data included in this user manual ............10 2.6.
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10.5. Weighing mode RAPID ............... 34 11. OTHER PARAMETERS ............... 35 11.1. Backlight of weighing result (display backlight) ........36 11.2. Adjusting display brightness ..............36 11.3. “Beep” sound – reaction on pressing function key ......38 11.4. Printout of all balance parameters through RS 232 port ..... 39 BALANCE ADJUSTMENT ............
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16.4. Format of data sending ............... 81 16.5. Format of data sent on pressing of PRINT key ........81 16.5.1. Format of data sent as response for commands generated from a computer ..................82 UNDER HOOK WEIGHING ............83 LIST OF COMMANDS COMPUTER – BALANCE ....... 84 ERROR MESSAGES ..............
BASIC INFORMATION 2.1. Intended use The purchased balance 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. Weighing result should be read only after stable reading has been obtained.
2.4. Monitoring the 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.
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 ÷...
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Assembling a balance with reading interval 10 mg: Remove the adhesive tape protecting the mass spring on one of the (2), Assemble the weighing pan (1) on the rubber mandrels (3), After assembling the balance components, check whether the weighing pan is firmly placed on the rubber mandrels.
4.3. Leveling Before plugging to mains, level the balance by turning the adjustable feet in a way that the air bubble of the level is in its central ring. The level is located at the back wall of balance’s housing. 4.4.
- Continuous data transmission in current measuring unit <Cntb>, - Automatic operation mode <rEPL>. Balance PS series can be used to weigh loads under the weighing platform – i.e. under hook weighing option. Balance software enables generating a report from adjustment process in a form of...
KEYBOARD ON/OFF key enables switching on and off balance’s display. If switched off balance components other than the display are powered, and balance is in stand-by mode. F key. Function key, which enables quick entering the settings of an active working mode. MODE key for selecting balance’s working mode.
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 PS series self-heating period takes approximately 30 minutes. The specified time interval refers to balances that have been stored in room temperature before plugging to mains.
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: Setup key. Entering balance’s main menu. Selecting group of parameters one by one downwards or changing parameter value by one value downwards.
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Name of function groups and their content: [Adjustment/Calibration] P1 CAL P1.1 iCAL [internal adjustment] P1.2 ECAL [external adjustment] P1.3 tCAL [temperature adjustment] P1.4 ACAL | both/nonE/tenno/tinnE [automatic adjustment] P1.5 CALt 1 h ÷ 12h [time of automatic adjustment] P1.6 CALr YES/no [report from adjustment] [Good Laboratory Practice ]...
8.2. Moving through user menu CAUTION Changes introduced in balance memory will be saved on return to weighing with procedure of saving changes. Press ESC/TARE key for several times, until the display shows command SAvE?. When display indicates the above command for saving changes, press one of below options: ...
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 3 C) the balance requires adjusting. the procedure of balance adjustment is described further in this user manual. •...
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 key for a few times. The display indicates available measuring units in turns.
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], [kg], [ct], lb], [oz], [ozt], [dwt], [t], [mom], [gn]. Go back to weighing mode with procedure of saving changes (see point - 7.1.2.
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 – if all – then select (ALL) and if only one from all available (described below). After setting the parameter press PRINT key.
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If for instance PcS mode is selected, follow procedure in accordance with point 14.1 point, to return to weighing: 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. On – mode available OFF – mode disabled...
Return to weighing (see point 8.2. – return to weighing). 9.4. Dual range balance (PS 200/2000/C) Balance PS 200/2000/C series is a dual range weighing instrument. The accuracy of the I weighing range is d1 = 0,001 g, and of the II weighing range it is d2 = 0,01 Transfer from weighing with the accuracy of the I weighing range to weighing with the accuracy of the II weighing range takes place automatically on exceeding Max1 point at 200 g (with no operator activity needed).
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>. 10.1.
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The higher filtering setting the longer weighing time.
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.
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.
10.4. Blanking of the 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 (see point – 8.2. – return to weighing).
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;...
11. OTHER PARAMETERS Balance PS 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.
11.1. Backlight of weighing result (display backlight) – backlight disabled – backlight enabled – backlight disabled automatically if weighing result does not change within10 seconds. Return to weighing (see – 8.2. – return to weighing). CAUTION: Balance software has implemented option of automatic backlight switch off bl = Aut.
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- maximum brightness of display backlight - minimum brightness of display backlight - backlight off...
11.3. “Beep” sound – reaction on pressing function key – signal of pressing function key disabled – signal of pressing function key enabled. Return to weighing (see – 8.2. – return to weighing).
11.4. Printout of all balance parameters through RS 232 port After pressing <right arrow> navigating key, balance parameters are sent to a peripheral device connected to balance’s RS 232 port. Return to weighing (see – 8.2. – return to weighing).
In verified balances PS series with external adjustment system, adjustment process is blocked (not available) for a user. Perform the calibration when there is no load on the pan!
12.1. Internal adjustment Adjustment process can be initiated automatically or manually. Manual means of activating adjustment procedure is realized by pressing CAL 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 balance display...
adjustment is automatically initiated if temperature changes more than 3 from last saved temperature. adjustment triggered by elapsing time. It is possible to declare time intervals which are a criteria for balance adjustment. Accessible settings are: adjustment after 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 hours since last carried out adjustment procedure.
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• 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. If weighing pan is loaded with relativaly small mass (up to 4 % of balance max capacity) than adjustment process will be carried out automatically, but measuring results may differ by the amount that was present on balance weighing pan.
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P1.4 ACAL – Automatic adjustment (balances with internal adjustment system) determination of factor, which condirions 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 timE –...
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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 balances with internal adjustment balances with external adjustment –...
12.3. Adjustment test 12.3.1. Balances with internal adjustment 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).
12.3.2. Balances with external adjustment It is mass comparison of external adjustment weight with its value stored in balance’s memory during adjustment process. 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).
12.4. Manual adjustment 12.4.1. Internal adjustment Press function key follow below guidelines balance performs internal adjustment automatically. 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.
12.4.2. External adjustment The external adjustment in balances PS series should be carried out with an external mass standard / weight class F Start of external adjustment process balances with internal adjustment balances with external adjustment Balance will display a command ordering unloading of weighing pan unloAd (weighing pan should be empty).
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.
13. DETERMINING CONTENT OF A PRINTOUT FOR GLP PROCEDURE 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 P2.6...
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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:...
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OP1 WILK (operator1 WILK) An instance of a user name inserted to a balance using small letters takes below form: Op1 wilk (operator 1 wilk) • P2.2 PrJ The parameter enables determining name of a project (e.g. related to a specific type of weighing process).
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Option determining presence of user name on a printout. • P2.6 PPrJ Option determining presence of project name on a printout. • P2.7 Pld Option determining presence of balance factory number on a printout. • P2.8 PFr Option enabling printing frames on a printout. For above parameters please select one of two available settings: –...
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 –...
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. Parts counting mode does not cooperate with other working modes of balance PS series. • Enable PcS mode: •...
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• in order to select one of the options, e.g. 20 pcs press ENTER/PRINT key and as the display indicates value “20” proceed as shown on below figure • If option FrEE (sample quantity is declared by a user) is selected, insert sample quantity used for determining mass of single part Press key to select a digit to be altered,...
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key to select digit value, • Accept inserted value by pressing PRINT key • Display indicates a command LoAd – load the weighing pan with as many details as inserted while determining sample quantity • Press PRINT key – balance indicates sample’s quantity (pcs pictogram is visible on the display) •...
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.
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• During setting limit values the following relations occur:...
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SET LOW LIMIT (LOW THRESHOLD) - digit selection; - set digit value; - accept inserted digit value SET HIGH LIMIT (HIGH THRESHOLD) - digit selection; - set digit value; - accept inserted digit value...
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 14.3. Percent setup Balance software enables controlling deviation (in %) of weighed loads with determined reference mass.
14.3.1. Reference mass determined by weighing • Enter PrcA mode • on balance weighing pan place a load which mass will be accepted as the reference • press PRINT to accept this working mode • 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 inserted to balance memory by a user • Enter PrcB mode. • Display will indicate as above • Using function keys Select a digit Select digit value • Determine the value of reference mass, insert it to balance memory and accept it by pressing PRINT key –...
Return to weighing 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.
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Enabling FiLL mode in the working modes The balance operates in accordance with the settings of AUE and CONF options. The options enable setting shorter or longer measurement time. Disabling FiLL mode On disabling FiLL mode, the measurement are carried out in accordance with user settings.
14.5. Density determination of solids and liquids Optional equipment of balances PS series AS 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...
14.5.1. Testing thickness solids Density determination of solids can be conducted in two pre-defined types of liquids or user-defined liquid with specified density: • H2O (distilled water), • C2H5OH (spirit 100% +/- 0.1% in temp. 20 • AnotHEr (another liquid with specified density) In case of determining density in water or alcohol it is necessary to specify their temperature.
14.6. Totalizing Totalizing mode is basically adding the following components in order to prepare a mixture. After adding following component of the mixture, the balance totalizes mass of the mixture and exposes its total mass on the display. During totalizing process mass of each added component is sent through RS232 interface to a connected computer of a printer (e.g.
15.2. Continuous transmission 15.2.1. Continuous transmission in basic measuring unit – continuous transmission disabled YES - continuous transmission enabled Return to weighing (see point – 8.2. – return to weighing).
15.2.2. Continuous transmission in current measuring unit – continuous transmission disabled YES - continuous transmission enabled Return to weighing (see point – 8.2. – return to weighing).
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 (see point – 8.2. – return to weighing). Automatic operation takes place according to the following scheme: ...
15.4. Determination of data type sent through RS 232 output – sending stable or temporary (unstable) weighing result – sending stable weighing result. Return to weighing (see point - 8.2. – return to weighing).
15.5. Minimal mass required for activation of 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. •...
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.
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...
16.4. Format of data sending Weighing result can be sent to a peripheral device by pressing PRINT key on a balance keyboard or by setting a control command from computer level. 16.5. 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.
16.5.1. Format of data sent as response for commands generated from a computer On receipt of a command, balance responses with: XX_A CR LF – command understood, in progress XX_I CR LF – command understood, but currently not available XX _ ^ CR LF –...
In standard analytical and precision balances loads can be weighed under the weighing pan. 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 PS series.
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) •...
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should be omitted, as they are added only for the purpose of proper legibility.
19. ERROR MESSAGES - mass out of range on balance start and adjustment Er1 Hi Er2 nuLL - value from AD converter ≤ 0 (A/D ≤ 0) Er3 FuL1 - values from A/D converter ≥ maximal converter range (A/D ≥ 0) Er4 FuL2 –...
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.
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 – implemets a set of commands for controlling a balance, e.g. tarring, start of continuous transmission, cyclic commands set to a balance.
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