User Manual Metal Purity Tester WTB/AU User manual no.: ITKU-78-04-09-12-A MANUFACTURER OF ELECTRONIC WEIGHING INSTRUMENTS RADWAG Balances and Scales 26 – 600 Radom - Bracka 28 - POLAND Phone +48 48 384 88 00, fax. +48 48 385 00 10 e-mail: export@radwag.com www.radwag.
SEPTEMBER 2012 -2-
TABLE OF CONTENTS 1. INTENDET USE..................................................................................................................... 5 2. PRECAUTIONS..................................................................................................................... 5 2.1. Maintenance .................................................................................................................. 5 2.2. Accumulator / battery pack ...........................................................
16.5. Weighing ................................................................................................................... 37 16.6. Testing carat content of pure gold ............................................................................ 37 16.7. Testing carat content of gold alloy ............................................................................ 39 16.7.1. Mode’s local settings ....................................................................................... 39 16.7.2.
1. INTENDET USE Laboratory balances WTB/AU series, featuring special design of the container and dedicated software, allow for density determination of metals. Application of the density determining method provides the following options: • Determination of carat value of gold, • Density determination of platinum, • Density determination of other metals. The software enables distinguishing precious metals from counterfeited by density determination of a sample.
2.2. Accumulator / battery pack Balances WTB are devices designed to be powered from NiMH batteries (nickel-metal-hydrogen) with rated voltage of 1.2V, size R6 and capacities from 1800 to 2800 mAh charged while plugged to mains without stopping operation. A balance plugged to mains continuously monitors the battery status and charges it if necessary. After sudden power failure from the mains, the balance automatically switches to accumulator without breaking operation.
D. Warranty does not cover: • Mechanical defects caused by product exploitation other than intended, defects of thermal and chemical origin, defects caused by lightning, overvoltage in the power network or other random event, • Balance defects if it is utilized contrary to its intended use, • Balance defects, if service claims removing or destroying product’s protective stickers which protect the balance’s housing against unauthorized access.
5. UNPACKING AND ASSEMBLY A. Carefully remove the balance from its packaging, B. Remove the transport protections: C. Gently place the balance in its intended place of use, on an even and hard foundation and distant from heat sources, D. Insert the ends of connecting strings of the openwork weighing platform (fig. 2) into the openings of the pan’s cover plate (fig.
E. Assembly balance components in the following sequence: the basis (fig.4) positioned between the locators (fig.5), and then container for test liquid (fig.3): F. Assembly the previously prepared pan’s cover plate with installed openwork weighing platform.
G. Install temperature sensor TB-1 of the liquid: 6. START-UP • After balance unpacking and assembling, the balance has to be leveled. Use balance’s adjustable feet and the level located on balance’s overlay to level the balance. Screw adjustable feet in a way to set the air bubble of the level in its central location.
- zero indication - stable result kg - measuring unit • If the indication is other than zero press key. 7. WARM UP PERIOD • Proper operation of a balance requires ambient temperature +15°C ÷ +30°C; • On switching on the balance, the warm up period (thermal stabilization) takes approximately 60 minutes; • During thermal stabilization period, display indications may change; • User should adjust the balance after the warm-up period.
9. FUNCTION KEYS Switching on/off – press and hold the key for approximately 1 second Function key (selection of working mode) Measurement acceptance Sending a weighing result to RS232 output Zeroing Tarring Caution: + keys, causes change in functioning Simultaneous pressing of of the specific keys. The way of their operation is described in details further in this manual. 10.
No 1. Text string Net Description Balance tarred 2. Balance in autozero zone (indication = precise zero) 3. Stable measurement result (result ready for reading) 4. Negative (with minus sign) measurement result 5. Battery indicator 6. Indicator of active working mode 7. Weighing status 8. Weighing in the air 9. Weighing in liquid (water) 10. Process completed 11. Measuring unit: density 12. Measuring unit: density 13. Gold caratage (Percent content of tested metal) 14.
No Parameter name Default settings P1 1.1 1.2 1.3 1.4 P2 2.1 2.2 2.3 2.4 P3 3.1 3.2 P4 4.1 4.2 4.3 rEAd Fil Auto tArA Fnnd Prnt Pr_n S_Lo bAud S_rS Unit StUn FLUn Func tnnP dEnS F-K 3 4.3.1 out K-1 4.3.
11.2. Moving through user menu The user moves in the menu by balance’s keyboard keys. 11.2.1.
12. MAIN PARAMETERS Users can adjust the scale to ambient conditions at a workstation (filtering level) or user needs (autozero operation, tare memory). The parameters are located in submenu . 12.1. Setting filtering level Procedure: • Enter the submenu and then: 1 - 4 - available filtering level settings • By pressing select required filtering level. Return to weighing: See point – 11.2.2. Caution: Filtering level influences stabilization time of a balance.
12.2. Autozero function The autozero function has been implemented in order to assure precise indications of a balance. This function controls and corrects “0” indication. If enabled, the function continuously compares the results with constant frequency. If two sequential results differ less than the declared value of autozero range, then the balance is automatically zeroed and the and appear on the displayed. pictograms When AUTOZERO is disabled zero indication is not corrected automatically.
12.3. Tare function This parameters enables the user to configure the tare function. Procedure: • Enter the submenu and then: tArA AtAr - automatic tare function enabled and tare value is stored in balance memory if unplugged from mains tArA no - Standard tare mode (tarring by pressing tArA tArF - tare memory function – stores last value of tare in balance memory. It is automatically displayed after starting the balance.
12.4. Median filter This filter eliminates short changes (impulses) of measuring signal caused by sudden shocks. Procedure: • Enter the submenu and then: Fnnd Fnnd no - filter disabled YES - filter enabled Return to weighing: See - 11.2.2.
13. RS 232 PARAMETERS External devices connected to RS 232C have to be supplied from the same mains and common electric shock protection. It prevents from appearing a potential difference between zero leads of the two devices. This notice does not apply to the devices that do not use zero leads.
Pr_n noStAb - Pr_n Pr_n Pr_n StAb rEPL CntA - Pr_n Cntb - immediate printout (not accessible in verified balances) sending stable measurement result automatic operation continuous transmission in basic measuring unit continuous transmission in current measuring unit Return to weighing: see 11.2.2. 13.2. Minimal mass threshold This function is necessary while working with automatic tare or automatic operation mode.
Return to weighing: see 11.2.2. 13.3. Baud rate Procedure: • Enter the submenu
Return to weighing: see 11.2.2. 13.4. Serial transmission parameters Procedure: • Enter the submenu
14. SETTING SUPPLEMENTARY UNITS The balance enables setting the following supplementary units: • Measuring unit: grams [g] or ounces [oz], • Liquid (water) temperature unit: [°C] or [°F]. Changes of supplementary units are carried out in submenu . The procedure of changing the measuring unit: • Enter the submenu and then: • Measuring units are changed by pressing • Accept changes by pressing saving inserted changes.
The procedure of changing liquid (water) temperature unit: • Enter the submenu and then: • Accept changes by pressing saving inserted changes. key and exit to weighing mode with 15. OTHER PARAMETERS The balance enables setting parameters which have impact on balance operation. The parameter are grouped in submenu , including such options as: e.g. backlight and beep signal. Enter the submenu according to chapter 11.2. 15.1.
15.1.1. Backlight if supplied from mains Procedure: • Enter the submenu and then: bL bL bL no YES Auto - backlight disabled backlight enabled backlight disabled automatically if indication is stable for about 10 seconds Return to weighing: See 11.2.2. Notice: When bl=Auto, and the indication has not changed for 10s, the backlight is automatically disabled. The backlight is automatically enabled on change of mass indication on the display. 15.1.2.
Procedure: • Enter the submenu and then: Return to weighing: See 11.2.2. Notice: The more intense the backlight, the shorter the balance operates on batteries. 15.2. “Beep” signal – balance reaction for pressing a function key Procedure: • Enter the submenu
bEEP bEEP no - disabled YES - enabled Return to weighing: See 11.2.2. 15.3. Automatic switch-off This function is essential for saving the battery power. The balance’s display is switched off automatically if (function t1 = YES) no weighing appears within 5 minutes. (the mass indication does not change on the display). In case this function disrupts the operation (e.g. long lasting weighing procedure) or while working with balance plugged to mains, the function can be disabled.
Procedure: • Enter the submenu and then: Returnto weighing: See 11.2.2. 15.4. Battery voltage level check While supplying from batteries, the current voltage level is measured. Is the appearing on the voltage becomes too low, it is signaled by pictogram display, and it denotes the need to charge the batteries / accumulators or exchange the batteries.. 15.4.1. Checking the batteries This function enables checking the level of power supply from batteries.
• Weighing mode is enabled; • Battery supply is enabled in balance parameters. Procedure: After displaying the charge level of batteries (in percentage) the software returns to weighing. 15.4.2. Battery discharge pictogram The symbol (bat low) [battery low] switches on when the voltage level decreases to 18% of the accepted voltage level. In such case change or charge the batteries/accumulators.
a) Parameter set to : • Pictogram does not appear, charging disabled. • During software initializing, after turning on „bAtt”. b) Parameter set to : • Pictogram flickers slowly (interval about 2 seconds), charging is enabled. • Message „nImh” appears on the display, • In case of damaging accumulators or their absence, the pictogram flickers quickly (interval about 0.5 sec). Caution: Balance comes standard with a set of rechargeable batteries NiMH R6 (AA) and a power adapter.
Return to weighing: See 11.2.2. 15.4.4. Formatting rechargeable battery pack The indicator features a brand new battery pack comprising NiMH R6 (AA) batteries and a power adapter. The batteries need formatting after first powering up. It is crucial for batteries lifetime to undertake this process. Formatting requires first full charging the batteries, followed by total discharging (without meantime charging). Procedure: 1. 2. 3. 4. Supply the indicator from mains.
Working modes are configurable in submenu , which feature special functions enabling adjusting balance operation to user needs and requirements. The above described modes are described further in this user manual. 16.1. Working mode selection While in the main window of the weighing mode press key, which displays a message
Declaring liquid (water) temperature is carried out in parameter . Procedure: • Enter the submenu and then: Return to weighing: See 11.2.2. 16.3. Declaring density of liquid In case the testing procedure applies liquid other than water (e.g. glycerin), it is possible to declare liquid’s density in submenu . Caution: In case of declaring density of liquid in submenu , the temperature of water declared in parameter is neglected by the balance software.
Return to weighing: See 11.2.2. 16.4. Basic weighing process 16.4.1. Tarring In order to determine the net mass load the packaging on balance’s weighing pan. key (Net pictogram is After measurement stabilization press displayed in the upper left corner and zero mass indication appears). After placing a load on the weighing pan, the net mass is measured. Tarring is possible within the balance’s whole measuring range.
Caution: Tarring cannot be carried out when a negative or zero value is being displayed. In such case message appears on the display and short audible signal is emitted. 16.4.2. Inserting tare value The balance enables manual inserting of tare value. While in weighing mode press: • simultaneously and • the display indicates: keys, • Using • • Press key, The software returns to weighing mode.
16.4.3. Zeroing To ZERO the indication press: key. The balance’s display shows mass indication equal to zero, and pictograms and appear. Zeroing is an activity equal to setting a new zero point, comprehended by the balance as the precise zero point. Zeroing is accessible only with stable display status. Caution: Zeroing of display indication is possible only within the ±2% range from balance’s maximal capacity.
• If measurement result is other than zero press zeroing). key (balance • Load tested sample on the top weighing pan (weighing in the air, flickering command IN AIR) and on stabilization of measurement result press key.
Test results: • • • • • • • Gold caratage [K], Percent content of gold in tested sample [%], Density of tested sample [g/cm3], Volume of tested sample [cm3], Liquid temperature [°C], Mass of weighed sample in the air [g], Mass of weighed sample in liquid (water) [g]. At the same time the test results can be printed on a connected printer by pressing button . 16.7.
3 Density of metal alloy [g/cm ] Gold caratage [K] % content 24 22 20 18 14 10 100 / 100 91.6 / 100 83.4 / 100 75.0 / 100 58.4 / 100 41.7 / 100 Copper and silver Copper Silver 19.32 17.73 16.42 15.24 13.38 11.91 19.32 17.63 16.19 14.99 13.04 11.54 19.32 18.06 16.94 15.96 14.30 12.96 Range of sample 3 density [g/cm ] 19.13 ~ 19.51 17.45 ~ 18.24 16.03 ~ 17.11 14.84 ~ 16.12 12.91 ~ 14.44 11.42 ~ 13.09 16.7.3. Testing procedure • Select working mode in accordance with point 16.
• After the indication returns to ZERO place the tested sample in the container with liquid (water) (weighing in liquid, flickering command IN WATER) and on stabilization of measurement result press key, • Simultaneously, for approximately 2 seconds the software displays liquid’s temperature value, and a window on process completion appears (message END): • The following test results are displayed on pressing key.
16.8.1. Mode’s local settings Local settings of MODE P are grouped in submenu : No. Parameter name Default settings Description 4.4 F–P P-1 Testing platinum alloy – alloy selection (P-1: platinum / nickel; P-2: platinum / palladium) 16.8.2. Table of platinum alloy density The table contains the density values of subsidiary components in an alloy with regards to platinum class in a tested sample: 3 Platinum class [PT] % content 1000 950 900 850 800 750 100 / 100 95.0 / 100 90.
• Load tested sample on the top weighing pan (weighing in the air, flickering command IN AIR) and on stabilization of measurement result press key, • Simultaneously the following command is displayed: • Unload the tested sample from the top weighing pan, • After the indication returns to ZERO place the tested sample in the container with liquid (water) (weighing in liquid, flickering command IN WATER) and on stabilization of measurement result press key, • Simultaneously, for approximately 2 seconds th
At the same time the test results can be printed on a connected printer . by pressing button 16.9. Determining percent content of main metal in a tested alloy Working mode MODE A enables determining percent content of main metal in a 2 or 3 component alloy. 16.9.1. Mode’s local settings Local settings of MODE A are grouped in submenu : No. Parameter name Default settings Description 4.5.1 in ALL-2 Metal alloy selection (ALL-2: 2-components alloy, ALL-3: 3-components alloy) 4.5.2 4.5.
• Load tested sample on the top weighing pan (weighing in the air, flickering command IN AIR) and on stabilization of measurement result press key, • Simultaneously the following command is displayed: • Unload the tested sample from the top weighing pan, • After the indication returns to ZERO place the tested sample in the container with liquid (water) (weighing in liquid, flickering command IN WATER) and on stabilization of measurement result press key, • Simultaneously, for approximately 2 seconds the
*) - alloy type is set in parameter . At the same time the test results can be printed on a connected printer by pressing button . 16.10. Determining density of other metals Working mode MODE S enables determining density of other metals. Procedure: • Select working mode in accordance with point 16.1 of this user manual, after which the main window of selected working mode is displayed: • If measurement result is other than zero press zeroing).
• After the indication returns to ZERO place the tested sample in the container with liquid (water) (weighing in liquid, flickering command IN WATER) and on stabilization of measurement result press key, • Simultaneously, for approximately 2 seconds the software displays liquid’s temperature value, and a window on process completion appears (message END): • The following test results are displayed on pressing key.
17.1. Adjustment Procedure: • Enter submenu and then: • The following messages will be displayed: • During this time the balance adjusts its start mass, and after completing the procedure, the mass of adjustment weight is displayed (e.g. 3.
• The completion of the adjustment procedure is signaled by the following message: • Take off the adjustment weight from the weighing pan, after which message is displayed for approximately 1s and the software returns to the adjustment submenu: • Adjustment process can be aborted at optional moment by pressing key which is signaled by displaying the following message: • Return to weighing with procedure of saving changes.
Procedure: • Enter the submenu and then: • The display will indicate the following message • After completing start mass adjustment the following message appears: • The process of start mass adjustment can be aborted by pressing key, which is signaled on the display by a message: • Return to weighing with procedure of saving changes. Return to weighing: See 11.2.2.
Caution: If the start mass adjustment lasts longer than 15 seconds lasts longer than 15 seconds, error message is displayed and short audible signal is key repeat adjustment procedure under more stable emitted. Press ambient conditions! 18. COOPERATION WITH PRINTER Each time the key is pressed a current mass value together with measuring units is sent to RS 232 interface. Depending on setting of STAB parameter, the printout is released with stable or unstable (temporary) value.
Cable diagrams: Cable: balance – Kafka printer 19. COOPERATION WITH COMPUTER Balance WTB/AU series enables communicating with a computer.
20. COOPERATION WITH TEMPERATURE SENSOR The standard design of the balances, includes temperature sensor TB-1, which is used for temperature measurement of the liquid. Connecting the temperature sensor to the balance is automatically confirmed by a message visible on the display. Simultaneously, the temperature value used during the process of sample weighing in liquid is automatically acquired from the connected sensor.
21.2.
an error occurred on command carrying out (time limit exceeded while waiting for stable measurement result (time limit is balance’s characteristic parameter) XX _ E CR LF XX _ - stands for a name of sent command - substitutes spaces 21.4. Command’s description 21.4.1.
21.4.3. Give tare value Format: TO CR LF Response: TO_TARA CR LF - command carried out Frame format: 1 T 2 O 3 4 5-6 7-15 16 space stability marker space tare space Tare Unit 17 18 19 unit 20 21 CR LF - 9 characters with right justification - 3 characters with left justification 21.4.4.
21.4.5. Immediately send measurement result in basic measuring unit Format: SI CR LF Accessible responses: SI_I CR LF - command understood but not accessible at this moment MASS FRAME - response is immediate with mass value in basic weighing unit Frame format: 1 2 3 4 5 6 7-15 16 S I space stability marker space sign mass space 17 18 19 unit 20 21 CR LF Example: S I CR LF – command sent from a computer S I _ ? _ _ _ _ _ _ _ 1 8 .
Example: S U CR LF – command from a computer S U _ A CR LF – command understood and in progress S U _ _ _ - _ _ 1 7 2 . 1 3 5 _ N _ _ CR LF - command carried out, response is mass value in current measuring unit. 21.4.7.
Frame format: 1 2 3 4 5 6 7-15 16 S I space stability marker space sign mass space 17 18 19 unit 20 21 CR LF 21.4.9. Switch off continuous transmission in basic measuring unit Format: C0 CR LF Accessible responses: C0_I CR LF C0_A CR LF - command understood but not accessible at this moment - command understood and in progress 21.4.10.
21.4.12. Send all implemented commands Format: PC CR LF Accessible responses: PC_- >_Z,T, TO,S,SI,SU,SUI,C1,C0,CU1,CU0,PC – command carried out, terminal has sent all implemented commands. 21.5. Manual printouts / automatic printouts Balance WTB/AU series enables generating manual or automatic printouts. • Manual printouts: press (measurement result),.
Example 1: _ _ _ _ _ _ 1 8 3 2 . 0 _ g _ _ CR LF – a printout generated from a balance on pressing ENTER/PRINT key. Example 2: ? _ - _ _ _ _ 2 . 2 3 7 _ l b _ CR LF a printout generated from a balance on pressing ENTER/PRINT key. Example 3: ^ _ _ _ _ _ _ 0 . 0 0 0 _ k g _ CR LF - a printout generated from a balance on pressing ENTER/PRINT key. 21.6. Continuous transmission The balance enables operating in continuous transmission mode.
22. ERROR MESSAGES Err2 - Value beyond the zero range Err3 - Value beyond the tare range Err4 - Adjustment mass or start mass beyond the acceptable range (±1% for weight, ±10 for start mass) Err8 - Tarring / Zeroing operation time exceeded Err10 - Accepting zero mass indication. Accepting mass measured in liquid (water), that is above / equal to mass weighed in the air Err11 - Density of subsidiary metals (determined by the software) is higher than density of the main metal.
23.
25. ADDITIONAL EQUIPMENT Accessories: • • • • • • • • • • • • KAFKA printer cable - P0136, Computer cable - P0108, EPSON printer cable - P0151, Power cord for car lighter 12V DC - K0047, Thermal printer - KAFKA, Dot matrix printer - EPSON, Current loop in plastic housing - AP2-1, RS232 / RS485 converter - KR-01, RS232 / Ethernet converter - KR-04, Stainless steel anti-vibrating table- SAL/N, Powder coated mild steel anti-vibrating table- SAL/M, Mass standards with accessories.
MANUFACTURER OF ELECTRONIC WEIGHING INSTRUMENTS RADWAG WAGI ELEKTRONICZNE 26 – 600 Radom, Bracka 28 POLAND Phone +48 48 384 88 00, fax. + 48 48 385 00 10 e-mail: export@radwag.com www.radwag.
