Home

User Manual LabMaster/Partner water activity Instrument

Contents

1. and conclude the input with YES The displayed date is in the European format with the pattern DD MM YYYY e g 17 April 2005 17 04 2005 The displayed time is in 24h format with the pattern hh mm ss e g 16 45 50 04h PM 45min 50sec 1 Users only for LabMASTER aw STANDARD and ADVANCED Esitin Every La bMASTER aw STANDARD and ADVANCED gives the option of es a Multi User Management system If a USER wants to measure an aw Value E Umer u on the system unit he must first log in with User ID and a password As soon as all measurements are finished he must log OFF of the system again by pressing the Logout key Up to 10 users can be defined with name and unique password and their rights managed By default a Sys Admin is set without password protection These rights are required for the administration One person must be responsible for managing the system as administrator This person should immediately write over rename Sys Admin with his name and protect his administrator rights with a password The Username and the password can be entered using the keypad E aa 123 Swapping from numeric keys to upper or lower case letters is done with the function button at the top right Please keep your password ina safe place A forgotten administrator password can only be deactivated in the Novasina factory or at an authorised Novasina service centre If this is so then all
2. e SAL T 11 was placed together with the sample in the chamber After about one hour the aw value was 0 087 Weighing the sample showed 0 519g which is a 6 94 increase in weight this is the moisture content at this point e Next salt SAL T 33 Displayed values 0 290aw 0 530g 9 1 e Next salt SAL T 53 Displayed values 0 523aw 0 553g 13 84 e Next salt SAL T 75 Displayed values 0 749aw 0 605g 24 55 Greater humidity was not of interest in this dry biscuit case With these 5 points a rough SI curve can be drawn www novasina ch 33 34 6 Calibration 6 1 Factory Calibration Delivery Status Every new instrument as well as every new replacement sensor unit called CM 2 cell is delivered already factory calibrated at 7 points 0 06 0 11 0 33 0 53 0 75 0 90 and 0 97a and a factory certificate The user therefore only has to check accuracy and recalibrate if required after some time We recommend checking the points that cover the products a range in the beginning after 2 weeks then 4 weeks then 3 months as long as the values are within the tolerances specified by the user s QC manual or fix shorter recalibration periods according to personal standards An other good way is to test one point with a Novasina SAL T standard that fit near to the last measurement point of the last few probes at the end of a day Leave the SAL T minimum 30 min into the chamber before you
3. 4 2 Operating the Measuring Instrument 4 2 1 System Startup The system runs a comprehensive function control of all internal modules and important software components when starting up After this the LabMASTER aw tries to establish a connection to any connected LabPARTNER aw units Any errors in the LabMASTER PARTNER aw hardware or software are then shown in an information window on the LabMASTER aw After some seconds the system is ready to conduct measurements The screen automatically switches to OPERATION MODE Please note that the system should already be in operation for several hours for exact and reproducible measurements Only this way can all electronic components have stabilised to the optimum temperature level and be working at highest precision 4 2 2 The standard Operation Mode Measurements and analyses can be made in this mode The display can be switched from single chamber display chambers selectable by ID to summary table display This is very easily done by pressing the soft key VIEW single all When in single chamber display the current chamber number can be set and displayed with the Select Chamber soft key The LabMASTER aw chamber itself is always allocated number O Multifuncion LCD Selected x E a chamber chamber 0 screen with backlight br aw 0 109 Actual KAN Ee i Functions key value MME URE x and information aw 0 109 Stable Temp 24 8 C value
4. Please read the LabPARTNER aw operating instructions for further details 2 5 Optional Accessories For certain use of the equipment the precision measuring cell of the LabMASTER PARTNER aw must be protected against aggressive vapours Novasina offers various protective filter systems for this purpose Please consult the corresponding datasheets for Novasina protective filter systems or contact your Novasina sales partner Using filter systems can prolong the service life of the measuring cell considerably Should you implement such filter systems please see to it that they are tested and changed at regular intervals Chemical filters in particular tend to become saturated and thus ineffective after they have been in use for a certain time Cell protection filters against aggressive vapours e Please consult the filter specification sheet Novasina offers a special accessory for determining the sorption iso therm of a sample medium In conjunction with the SAL T humidity standards a suitable curve can thus be adopted with the greatest of ease As such the L bMASTER PARTNER aw can also be used for fast precise and non destructive water content measurement i Operation manual b for sorpiton Isotherm Weighing glass with cover Plastic case pe with soft padding Special pincers Special measurement body for the chamber Stainless steel substance basket www novasina ch 3 1 Packaging Insta
5. or ei soft keys and then press ENTER Select on the same way the menu point 2 Temperature by pressing 2 or moving the highlight up or down using the or soft keys and then press ENTER Set the new required chamber temperature by keyboard and finish your settings by pressing the OK soft key Return to single chamber mode by pressing ESC or many time the function key Previous screen The internal controller system will change now the new chamber temperature Maybe the rotation speed of the internal fan will be changed part time and you can hear it a little bit On the screen you can see that the temperature of the actual value will move the direction to the new set temperature This takes a little while During this time the chamber system must be closed A sample or a SAL T can be inside but the speed of changing will be slower Please wait during the temperature Stabilisation process Note If you are using a multi channel system LabMASTER aw and at least one LabPARTNER aw select the chamber number before changing the settings 3 4 5 Stability Parameter Setting for Analysis ae Lee Erg T ijapa s tar sgttirg L Sede dete L lari BETT MME O Fil ere as M Pose Lies Fee Oe eee are st ha TE To optimise the measuring speed of the instrument it is possible to optimise the stability criteria of the measurement for each sample Two Stability
6. 5 Water Activity Measurements 5 1 Carrying Out aw Measurements e Switch on the LabMASTER aw as described in chapter 3 2 After reaching the chamber temperature the instrument is ready for measuring the sample For a high precision measurement the system must run hours before you can start the measurement The temperature of the complete system must be stabilised first e Fil the sample cup with the material to be measured The sample cup must be completely clean and dry rub dry with tissue paper if necessary Ideally always use a fresh cup and dispose of it after use Important Fill the sample cup to approximately 2 3 with the product to be measured Do not overfill the sample cups Bulkier material must be suitably crushed or manually cut into small pieces Products consisting of several layers or an outer coating must also be crushed e g confectionery products Prolonged hand contact with the product must be avoided falsification of measured value A grinder if used must not warm up the product www novasina ch 25 Se lected Actual Stable f Status met aw DK Temp 245 C Time Ode 37 Chamber 0 aw 0 109 Temp 24 8 C Time 00 02 37 aw Temp 24 8 C Stable 00 02 01 15 10 204 1 Broun Chamber D NAPR 26 Switch OFF the buzzer e Open the instrument cover and check the chamber inside This must be clean an absolute dry
7. If this button 2 is pressed the RE See function is the same as selecting the row Units with the soft keys 3 Flirto set ortions code 4 and then pressing the ENTER soft key 5 Flee select The following device settings are possible for each LabMASTER PARTNER aw Satttnmg e Chamber settings Menu point 0 Fls select e Sample settings Menu point 1 e System settings Menu point 2 4 3 Setting the Instrument 4 3 1 Chamber Settings can be set separately for each measuring chamber 0 9 if necessary hae ne i hamber metti mais Ch Hi All settings are only ever related to the currently selected measuring chamber with the corresponding number which is shown at the top right of the screen within the Select chamber soft key 0 Power power ON OFF for a selected chamber only LabPartners 1 9 0 OFF for one selected LabPARTNER aw or1 ON default setting when a system is configured This allows to switch ON or OFF the power of the temperature control of an LabPARTNER aw Please switch OFF the power on aLabPARTNER only ee if you dont need this during a longer period of days or weeks Otherwice the k s chamber takes a very long time over hours to become stable before you can measure very precise www novasina ch 16 4 Stab E Gier tine C ch Cal ibr Eoen Lite abserwstion Lies sa aE k sb obaerurtion time C RHEI iar step k ie S
8. ambient temperature Max deviation 90 260V 50 60Hz Fuse 6 3 A FST slow blow 1 spare fuse Fuse 6 3 A FST slow blow 1 spare fuse max 65 W per instrument after temperature equilibrium 15 W S49 5 95 rH not saturated 26 x 44 cm LabMASTER and PARTNER aw 10 kg depends on the additional accessories IP 21 0 50 G gt 0 1 C 25 C down to the ambient temperature 0 2 C Measuring system with measuring converter and sensor Measuring range aw value sensor 0 03 1 00a Operating range aw value sensor 0 C 50 C Accuracy when fully calibrated 0 003 a at 25 C and 7 point calibration range 0 04 0 97a or 0 010a Resolution 0 001 a Repeatability 0 002 a Temperature sensor accuracy 0 3 C Temperature sensor resolution 0 1 C Interface USB RS 232 USB 1 1 RS232 Baud rate 9600 192200 ASCII signs 115mm x 86mm 320 x 240 dot matrix LCD with LED backlight 60mm x 17mm 2 x 30 character orientated LCD with LED backlight LCD illuminated display LabMASTER aw LCD illuminated display LabPARNER aw Level of sound Noice level is lower then lt 68 dBA More technical information and data see as well operation manual of the LabPartner aw www novasina ch 43 8 1 Equilibrium humidity values of the SAL T humidity source Type of Novasina EU Toxic Color Chem relative humidity in relation Literature Hum check type classe of salt symbols of
9. resentative placed in the instrument www novasina ch 45 error report error description needed action The SRAM was re initiali The battery packed RAM con 1 press OK zed All data were reset to tent is destroyed and was new ini 2 enter the licence code under default conditions except tialised All settings have been System settings gt Set opti for the calibration values E the saved calib Ei AA See sticker on the bottom of the in strument This point does not apply for the LabMaster aw BASIC version 3 set all settings new date ti met user account error report error description needed action Fatal Error fatal hardware or mainly softwa Please note the error message re error carefully switch the instrument off and restart If the error mes sage recur please contact your Novasina representative www novasina com www novasina ch 46 Short Menu overview 10 66 0 0 PEE WO p J oul Z jJO UO no uud lqe1s ONY weu Aloyesoge7 0 UOHEINBYUOD JOJULd L x aaqweyo Z BoIeAON 6 9 0 po uondo 38S 9 oju Z sBun s 10 798 0 S Y 9 JOJUUd 3IA G J 0 x DOIN Od l guuoj e eq L uoneSiunuuuioo G 6 0 0 1ybIpyoeg 4 6 0 0 Jse4JUOD 0 s6ulyes G91 r spuozas QZ o 0 uoHeinp zznq lqe S 4 6 OI 0 8uunjoA 0 A G W q W A 1 zzng A Wa guuoj BIC Z J eineledwa 4 HY
10. s Stab observation time ow Use Ciel ard mer LC keagl ZiTewrersture SE obser Kg tin Su cite libr patiens rite St ab miene tiec C E se Cir snd numer ic k il Sett ina Chseber ZA E Lee E Tompo FOF e d Stab ober ation time ma d Stab Geer at on tine 1 Load from database load one sample parameter set So that not all settings need be changed individually for each test sample all necessary parameters set for a test sample can be saved under a name in a database and allocated to a measuring chamber at any time A database with up to 10 possible test sample data is available for this purpose See chapter 4 3 probe data base As soon as a parameter is subsequently changed the link to the samples database is unmade and the display shows OFF to confirm this If a parameter needs to be changed generally for a sample this should be done in the samples database see chapter 4 3 1 2 Tem pe rature temperature setpoint of selected chamber A new nominal temperature value for the selected measuring chamber can be entered with this Select the menu Settings gt Chamber settings gt Temperature The internal temperature regulator processes nominal temperatures in the range of 0 0 50 0 C 32 0 122 0 F Thus the measuring chamber can be operated at up to 25 C above or below the normal environment temperature as a rule 25 C After changing the mea
11. 2 unit e Push the new CM unit in its position and assemble in the opposite manner Set the measuring block back into the instrument cover in the right place there is only one position possible to click in Screw in the last 3 screws of the measuring block don t fix the screws too tight a te KN A Warning Never press with a finger on the top of measuring cells this might damage the cell protection filter www novasina ch 41 7 5 Replacing an Instrument Fuse The LabMASTER aw can be connected directly to your local power line of 90 260V AC A main fuse protects the power supply against overload The fuse is integrated directly inside the mains connector Please follow the instructions to replace it with a same type of fuse 1 spare fuse included in drawer above mains connector Switch off the L bMASTER PARTNER aw e Pull out the mains cable to have access to the fuse drawer A e Replace a defective fuse by one of the same type 1 spare fuse included fuse holder Wi AS 20 x 5mm FUSE 20x5mm 230V 6 3 A Ge incl 1 pc spare fuse J main cable 115 230 VAC www novasina ch 42 Technical specifications General Mains supply LabMASTER aw LabPARTNER aw Power consumption Permissible ambient Temperature range Humidity range Surface area W x D Weight Protection class Temperature controller Temperature setting range Accuracy of control Max cooling in respect of
12. C aw 0 388 N O V A S I N A Water activity meter 8 k K k k k k amp k k KK k k k amp k kk k k k k k k k k amp k k k k k k k amp amp lt LabMaster aw User account Chamber 9 Serial number Sensor Type Serial number last modif Laboratory Cal point User account Last modif Instrument Ref Value Input Value Temperature SW version 1 06 C003 Default user SW version 1 06 C003 LABMAST 0409011 CM 2 07 0504004 10 06 2005 11 21 00 Schnyders Labor 0 064aw Calibrated Default user 22 06 2005 06 09 00 LabMast 0409011 0 064aw 0 066aw 250 C Stable Protokoll Actual Protokoll Single cal point Protokoll chamber 9 www novasina ch 20 Accessories for printer LabMaster aw Printer cable Novasina offers a cable set for Seiko printers which enables to connect a LabMaster aw to a Seiko DPU 411 or DPU 414 printer The cable length is 1 5m Novasina part no 111 7473 This cable is not included to the LabMaster aw The printer functions can be used on all versions BASIC STANDARD and ADVANCED Printer settings IS ONLY VALID FOR A thermo paper printer SEIKO DPU 411 or DPU 414 A ESC P compatible printer shall be connected to the RS 232 interface of the LabMaster aw Novasina recommends the Seiko DPU 414 printer with following settings Input Serial Printing Speed High Auto Loading ON Auto LF
13. Me lIpluunr 0 spun Z sBun s 1 quieuo wad G eseqelep jdwes Ip ug Y UOHEIQIED pwlad JO EJ SIUILUDV Z DIOMSSEd OWEN 0 sjunoooe Joen 6 o 0 si sn oul 4 oe 0 oun opp 19S 0 sbulyjas wajsKs Z Do GUI uol eA19SqO EIS Me OUI UOIJEAIOSGO Ge S Z oul L OweN 0 ouuw peaig Bai aseqejeqg oiduge 6 o 0 aseqejep ajdwes RR KEE E JOSU S OJul W JS S jJ Jaquieyo oJul wajsXs 0 oju ui 9 s S 9 pJsomssed JOSuas 8S Jql JeO Z s ulod uolle IqI e2 e O j s uiod uoliqi e2 9 01 0 s ulod uoneaqgijeo Aejdsig 0 uol iq IEeO G UILU 0 O L duu 19 uueued 3Iliqe S p uiu OF 0 L Me JayoweJed Aude 4 ZEL o z 9 09 o 0 in ej duu l Z Jo at LOL peol uoq seq ejep 6 OO aseqejep woz peo L uo I 00 1 AOd 0 sbBun s 1 quieuo 0 sBun s nu ui Me 19 SeINGe 47 www novasina ch 48 The Novasina team would like to thank you for your confidence and hope you will enjoy and obtain successful measurements with the world leader instrument LabMaster aw for high performance quality measurement of water activity and its manifold options You have now the powerfullest water activity meter with outstanding options simple handling and best reproducability for your special application in quality measurements In case of any further questions Novasina and its agencies will be happy to advise you at any t
14. Stable 00 02 07 Statusline Date time and logged user Be irr The chamber numbers of connected LabPARTNER aw units correspond to the set ID numbers of the respective units It is possible to connect up to nine LabPARTNER aw units with ID No 1 9 to a LabMASTER aw The summary display table is created dynamically Successful communication with the LabPARTNER aw is thus also displayed www novasina ch 15 Elements of the configuration menu You open the main menu by pushing the Settings soft key Selecting a further menu point e g 3 and then pressing the ENTER 5 soft key brings you to the submenu and the corresponding display window Pressing the Previous screen soft key 6 brings you back one menu level CU Zettireg Ke Shia Sie These soft keys let you move the menu selection up or down within the current window The selection in this case must be confirmed with the ENTER 5 soft key Instead of making a selection with the soft keys it is also possible to use the keypad for navigating through the various submenus Each menu point is pre allocated a number Numeric or alpha numeric keypad Logout Delete the last character change the function of the key AA aa 123 p g r s 7 Ip an 122 Delete the full line Escape Co In the example given on the left the Units function has temporarily TEN ai T ee been allocated to button 2 on the keypad
15. e Make sure an appropriate cell protection filter is installed in front of the measuring cell unit should the product sample require such protection measures For details please consult the filter specification sheet e Insert the open sample cup containing the sample into the measuring chamber left and close the cover again Press the cover completely down otherwise the anlaysing function does not start Note To gain time for measuring the next sample while measuring the current sample place the next sample cup with its plastic cover closed into the preconditioning chamber right to reach thermal equilibrium before closing the instrument cover Displayed values The Novasina LabMASTER aw continuously measures the water activity a I RH and the temperature C F and displays the momentary values with bigger letters on the screen If an analysing of an probe will be finished the system will fix the result This result will be presented it with an inverted display part on the lower part of the screen The upper part will show the actual value of the measurement at any time So you can see after a while how good the stability parameter are adjusted for this probe Activating the stability observation function Press the lt Start Stop Stable gt key the yellow LED Analysing flashes The stability observation function is activated The elapsed time aw value and chamber temperature appear on the display As soon as
16. lt lt k k lt lt lt k k k lt lt lt lt k k k k lt lt k lt lt lt lt k lt x KKK lt lt x k k x k lt lt lt k k lt lt lt k x k lt lt lt lt k k k k lt lt k k lt lt lt lt lt lt x lt lt lt x x k k x x lt lt k k k lt lt lt lt k k lt lt lt lt k k k k lt lt k X lt lt lt X x x KKK x N O V A S I N A Water activity meter KKKKKKKKKKKKKKKKKKKKKKKK k k lt lt k KKK lt lt k k lt x x lt lt LabMaster aw User account Chamber 9 Serial number Sensor Type Serial number last modif Laboratory Product Sample file Stab obs time Date time Duration Temperature Stable SW version 1 04 Default user SW version 1 05 0504004 CM 2 06 0504004 10 06 2005 11 21 00 Schnyders Labor Fleischwaren aw 5min c Imin 14 06 2005 13 00 00 00 00 05 250 C aw 0 388 LabMaster aw User account Chamber 9 Serial number Sensor Type Serial number last modif Laboratory Product Batch no Sample file Date time Time Temperature Actual N O V A S I Water activity meter amp k amp kk k k k k k k ik k k amp k k k k k k k k ik k k k N A SW version 1 04 Default user SW version 1 05 0504004 CM 2 06 0504004 10 06 2005 11 21 00 Schnyders Labor Fleischwaren 14 06 2005 13 00 00 00 00 05 25 0
17. saved parameters and data will also be irretrievably lost The instrument will then be put back to its original factory default condition Please be careful with UPPER and LOWER cases and NUMERICAL input when entering a password Note Use only numerical characters for the password This simplifies input and is less likely to be forgotten www novasina ch 22 Defining a user i sssF To define a new user in the system select a free space in the table e g EES No 3 using the soft keys or the keypad HEE Then you can enter the new user name and finalise it with ENTER Next you will have the option of allocating different rights see User Rights below for the respective user The status active YES inactive NO is shown This action is terminated with the key Previous screen User Rights The user management system gives the administrator the option to allocate each entered user different rights The table below gives an E cassini st st He overview of the rights currently possible These can be extended in tn S Permot Ceitberetkc H fett edit spele detebees Fe future Please consult the current user management system while S Parmit imber zs GEES ct allocating rights Administrator Yes Yes Yes Yes Yes Yes Yes Yes PERMIT Yes Yes No Yes No No No No Calibration PERMIT Yes Yes No No No No Yes No Sample data base PERMIT l Yes Yes Yes No No No
18. software of the LabMASTER PARTNER aw Instrument ID LabMaster aw Hardware L001 Firmware V 01 07 C003 date 08 05 This information is very important for the service centre to be able find errors and functions It also allows any system updates to be retraced Please keep this information at hand whenever contacting your service centre 8 Set options code forall LabMASTER aw versions System expansion BASIC gt STANDARD gt ADVANCED This function allows you to equip a LabMASTER aw with extended functions see 4 Function description Doing so requires the currently set and readable CODE to be provided to a Novasina representative The representative will then unlock the corresponiding software functions with a new CODE The new CODE is a product from the old CODE and the new function you need Please send your actual CODE of the system together with an order to your local Novasina representative This software extension comes at an extra charge Keep the current code in a safe place This code only ever relates to one specific L bMASTER aw unit The CODE will be as well on the software certification paper Please add the new CODE as well to this paper The code must always be presented for any repairs Only so you can be certain that the same functions will be available after repair A label on the LabMASTER aw gives information on the system code of the delivered unit Please complete this if needed
19. the specified operating conditions see chapter Specifications Observe and strictly adhere to the local regulations regarding the handling of mains powered devices Use only genuine accessories and spare parts available from your Novasina supplier or look in the internet under www novasina com This instrument must not be modified in any way without the written consent of Novasina a division of Axair Ltd Never open the instrument without removing the mains power cable first to avoid any risk of dangerous currents www novasina ch 2 General Product Description 2 1 System Overview The LabMASTER aw system has been specially developed for determining the fraction of free water in a test sample like food cosmetics or pharmaceutical probes This fraction is also known as water activity in the foodstuffs industry Unfortunately these days many people still confuse water activity with the water content of a sample Measuring the water content of a specimen however is measuring the combined fraction of both bound and free water The water content can be determined indirectly yet non destructively using LabMASTER aw see SI Sorption Isotherm The fundamental requisite for determining water activity quickly and with extreme precision is an excellent moisture sensor that reaches an exact reproducible measurement over a very wide range moisture from 0 100 rF Novasina has been developing special electroly
20. the measured values are considered stable the buzzer sounds and the green LED Stable lights up The display now also permanently shows aw temperature and elapsed time at that moment This information disappears as soon as the cover is opened or the lt Start Stop Stable gt key is pressed again Removing the measured sample Open the instrument cover after ending of the analysing and after writing down the result e Remove the sample cup from the measuring chamber carefully Do not empty out any part of the sample The instrument cover shall be closed now This helps you for a next quick measurement www novasina ch Note If heavy concentrations of glycol glycerine acetic acid etc were A presentin the sample leave the cover open to letthe cell and its protection filter recover in the air e Ifyou wantto measure the next sample take it from the pre conditioning chamber open the cup remove its cover and place it in the measuring chamber The following sample may be put into the pre conditioning space before closing the instrument cover Note Leave the instrument switched on so that it is ready to measure at any time The power consumption is very low If a product sample has a greatly different temperature from that of the chamber a temperature gradient inside the chamber may retard the temperature equilibrium thus also the aw value The instrument measures the different temperatures inside the chamber very a
21. the menu Settings gt Chamber settings gt Select chamber number gt clear calibration points choose a point from the table to clear or choose clear all points 6 6 Interfaces RS 232 and USB The Novasina La bMASTER aw can be connected to a PC via the USB A or the RS232 interface 9 pin D sub plug Please do not connect both interface to a PC at the same time This will not work and maybe it can damage the system The software Novalog MC for Win9x 2000 NT XP is also delivered It leads the communication and can be used to evaluate the measured data of several channels of the LabMASTER aw system Further the data s can be exported to Excel and saved on a PC On the Novalog MC CD there is an installation program which has to be perfomed The data string from the instrument to a PC only important for software engineers applies for data format Novalog32 The information comes over the line in a continuous data string from the LabMASTER aw system to the Novasina DLL software part inside your operating system to the Novalog32 software The data string can be as well used for other software implementations For example for a connection to a production planning system called PPS Any string has a structure of 23 characters Position KEE 11 12 13114 15 16 17 18 19 20 21122 23 fame 25 0 e ee mn ee Temperature in C Relative humidity in rh Dx values for Novasina internal use only Carriage re
22. write the value in a table If you have a bigger drift of the actual measurement accuracy is over a longer periode calibrate the system new You dont need to calibrate any point of the chamber at once if you measure always in a high aw value every time Then it will be enough when you check and calibrate only the 0 75 0 90 and 0 97 a point A sensor unit carries all calibration information Up to 15 points can be stored Please check the sensor calibration data Most likely a 4 point and all Novasina standard salts 0 34 0 63 0 11 0 33 0 53 0 75 0 90 0 97 and 0 98 a are stored in the memory for automatic recalibration within 15 C and 30 C Note Define a standard quality process for your work and define an standard test procedure for your L bMASTER PARTNER aw system 6 2 Set Sensor Password al Folntz e een m mq zm mm sss ESTRELA Ept sensor Password lisa CCiri ond numeris meas A Every sensor unit can be used in any of the LabMASTER PARTNER aw instruments and carries all calibration data with it We call it intelligent sensor unit Nevertheless for highest accuracy Novasina recommends checking recalibrating an instrument once it is finally installed and has been switched on for several hours A very good and easy check on some humidity points is possible using the Novasina SAL T checks which are included This sensor unit can now be password protected so that only an administrator who know
23. 2518902 200040 355 04 aw Messgerat aw measuring instrument Appareil de mesure aw eo Master av amp LabPartner aw Operating Instructions World leading thanks INNOVATION solution and sensor technology novasina The Art of Precision Measurement www novasina ch Novasina AG Printed at 2007 in Switzerland Technische Anderungen vorbehalten Technical data subject to modification Sous reserve de modifications techniques www novasina ch INDEX 1 TH OCI OI E 4 Jl TIT ef TEE 4 1 2 WOO GAIN et 4 2 General Product Description 5 2 1 System IV TEE 5 2 2 SySlerr E e EE 6 2 3 Instrument RTE 7 ZA Standard GI CNY EE 8 2 5 Reiter e 9 3 Putting Into OBeration u uuu uu u uuu REE sssss lt ssussussssssssssssssasa 10 3 1 Packaging Installati n LU uuu ua asasswkhayaqawkusqwqasaq uskaaqanawauqqkqawatanaqquskiwskuakapku 10 3 2 Putting Into Operation Uu u uuu s niani ia a ii aaa aa aA a anaa 10 3 3 Adding An Additional Channel LabpARTNER aw 11 SE O E a e 12 SE System SIar E 12 34 2 Quick Measurement Start EE 12 3 4 3 Changing the Reading RTE 12 3 4 4 Change Selected Chamber Temperature A 13 3 4 5 Stability Parameter Setting for Analyse 13 4 Description Instrument Functions 14 4 1 General Description of the System User Elements A
24. A 14 4 2 Operating the Measuring Instrument rara rrsrrrsssrsssssasssa 15 4 2 1 System AUD UuL u uuu usa ss uqaqaqkapiuawssanawasayawssaskasayaswaqhunkasqaqahasiuwspaqqaqskuusqa 15 4 2 2 The standard Operation Mode 15 4 3 Setting the Instrument E 16 he Gham hiherSellin uu uuu uy a E 16 4 3 2 Samples Database max 10 18 4 3 3 Printout function for external printer geed eege See dege d 19 4 3 4 General system Settings a ns 22 5 Water Activity Measurements 25 5 1 Carrying Out aw Measurements 25 5 2 Important Notes About The Sensor ccc ccccccesceceeeceeeceeceeceseeeeeeeeseeeeseeeseeeeseeessueeseeeeaeeess 27 5 3 Function Principle of Stability Observation a 28 5 4 Setting Stability Observation Time Factors a a 29 5 5 Recording Desorption and Adsorption Curves sansennsnnsennsrrsnrrrnnsrrnnrrnrrrnrrerrsnrrenrnrrrnrrni 30 o CMD ION aceon u uu au uuu u u denne eee ends 34 6 1 Factory Calibration Delivery Status A 34 6 2 Set A Sensor AS KE 34 6 3 Display Sensor Calibrat
25. ANCED models A LabMASTER aw can monitor and control up to nine additional LabPARTNER aw units All settings to the L bPARTNER aw are made from the LabMASTER aw the controlling unit A L bPARTNER aw can not be operated alone without LabMaster aw Every L bPARTNER aw has its own independent temperature stabilised measuring chamber a chamber for preconditioning an LCD panel and two buttons for start stop and internal settings options A device number can be allocated using the software setup to uniquely identify the unit Attention No two units may be allocated the same number in a network Please check that on a system of L bMASTER PARTNER aw it has to be only one L bMASTER as a chief manager It is forbidden to connect two LabMASTER aw via the bus line together For further information please read the operating instructions for the LabPARTNER aw A LabMaster aw system with 3 Partner and a laptop www novasina ch 2 3 Instrument Overview Cover with sensor unit Probe measurement and pre conditioning chamber LED light Analyse LED light Stable Fix Functions keyboard Standard keyboard Functions buttons LCD screen Main switch Mains outlet to the next LabPARTNER aw System bus linet to the next LabPARTNER aw USB output to a PC RS 232 output to a PC or external printer Mains power for any LabMASTER PARTNER aw Fuse over the plug Detailed LabPartner aw description see o
26. Multi User User management system Password protection RS 232 USB communication External printer RS 232 PC software NovaLog32 LabPartner bus line Power ON OFF LabPartner Measurement chamber selection Intelligent sensor password Calibration at 8 points Unit changing aw RH C F date Optioncode alignment V V y V V y V V y V y x x x v V v V B Na i wx lt x x ee lt lt lt E lt S NS m Ne Se NN 4 1 General Description of the System User Elements A LabMASTER aw system is used primarily for precise measurement of the water activity of a test sample at an exactly reproducible temperature It stands out for the following special properties High precision temperature stabilised active measuring chamber Second pre conditioning chamber for the following sample Precise especially developed humidity measuring cells that can be adjusted to the proven Novasina humidity standards at any time High precision adjustable stability display Multi user management system with dynamic administration Multi chamber management system with dynamic administration Samples database system for efficient lab work Main operating elements of the L bMASTER aw www novasina ch Status of Function keys Keypad unit analising for data input LCD multi Fix functions function display or keys Bi 0 ERZ Teme 26 6 Time DIE status line time date and actual logged USER
27. No 3 be printed out over NovaLog MC or the Printer it can be activated using key 3 or selection by arrow keys Under menu point Data format you can either select a single channel over Novalog32 Chamber x or you can select the NovaxCom format for the new software NovaLog MC 6 Reset to factory settings for al LabMASTER aw versions This function resets the entire system LabMASTER aw and where applicable also LabPARTNER aw to the original status upon delivery This function can only be called up by the user with administrator rights All settings of the user management system will be irretrievably lost Only the serial and software licence numbefs BASIC STANDARD or ADVANCED and the data based on the fsensor such as adjustments will be retained To prevent unintentional deletion it must be confirmed twice whether all settings shall really be reset t default settings or not The first prompt must be answered with Yes and the gecond with NO for this reset function executed www n vasina ch Settings Be Stem set tines k bh Gzten Late SAET Ins trumonts Lattiorter me Har duar es Lam Fi Par s Lea A PT at Bett i ras i Surtees setiinas Bes d st date Thier SU eee kita Ti Bummer LCD Settini TIRS r USE Dete format HO 3 6 Heset to factory settirmes 7 Info for all LabMASTER aw versions This menu point contains general information on the hardware and
28. No No Chamber setting General permition Yes Yes No No No No No No Deleting a User A user can be deleted from the administration by deleting the user name There must be at least one Administrator User defined at any time however otherwise the system will be locked completely Only administrator rights allow the deletion of users or passwords User Password When first entering a new user the password must be entered twice time to confirm This helps make sure the password is entered correctly The administrator can see a forgotten user password in the Management system see User gt 1 Password 2 Units for all LabMASTER aw versions A LabMASTER aw can display the measured values in various different units The values are as follows Humidity aw value or relativ humidity RH i Serre ace lt See Temperature Cor F 7 Date format DD MM YYYY MM DD YYYY or YYYY MM DD There are three different date displays to select from Examples DD MM YYYY 03 05 2005 3 May 2005 MM DD YYYY 05 15 2005 15 May 2005 YYYY MM DD 2005 05 27 27 May 2005 www novasina ch 23 apse ee en Batz doe per CR Berri a Tezi ar Se ttlras 24 Cats formset aml si m un sara Cl ar aE Ca fa default lt alure a Tre celitrsticon Lath J i TE are pert checeed A Buzzer for all LabMASTER aw versions The volume and duration
29. OFF Setting Command Enable Printing Density 100 Printing Colums User Font Back up Character Select Normal Zero Normal International Data Length 8 bits Parity Setting No Parity Condition Odd Busy Control XON XOFF Dip SW 3 1 through Dip SW3 8 of the Seiko DPU 414 printer have to be set following the table above The settings of all other switches are just a recommendation www novasina ch 21 4 3 4 General system Settings Various generally valid parameters that cannot be allocated to a measuring chamber are managed in this module The multi user administration password allocation and access protection can be defined here All of these settings depend on the LabMASTER aw version BASIC STANDARD or ADVANCED Such parameters may be able to be entered only partially or not at all depending on the model see list on page 14 chapter 4 0 Set data time System settings only for LabMASTER aw Each LabMASTER aw has an internal clock and calendar function that i am continues to run even while the unit is switched OFF By default the system is RV aaa setto GMT Greenwich Meridian Time This parameter should be set to local ia time and current date after first starting up the system The easiest way to do EE 68 Data Torat Mek z this is with the keypad beside the display Please separate day month and year 1 wawawa or hours minutes and seconds with a dot
30. R aw and subsequently all connected LabPARTNER aw units are powered on An acoustic signal and the standard display on the LabPartner LCD confirms when they are ready for use if the L bMASTER aw fails to power on any of the LabPARTNER aw units the display Waiting for Master appears on the respective L bPARTNER aw This error can arise due to missing or incorrect cabling to the LabMASTER aw or an incorrectly or duplicated L bPARTNER aw device number Interface LabPartner aw Interface Main power connection oak Near if Spelin burs com munication Ene Instrument ID of a N LabPartner power supply LabMaster aw multi chamber screen with 2 LabPartner www novasina ch 11 A ATTENTION A LabPARTNER aw can only be operated with one connection to a LabMASTER aw All settings to the measuring chamber etc can only be made from the LabMASTER aw the LabMASTER aw unit or up to the distance of the cables 1 8m around it wherever there is space available Special systems with up to 9 additional channels may be distributed over different rack levels o Naun An additional LabPARTNER aw instrument may be placed directly beside 3 4 Quick Start 3 4 1 System Start While the LabMASTER aw System is starting a greeting text appears on Lab ioter an the display After about 3 seconds the display automatically switches to DER TH single chamber measuring mode Depending on the LabMASTER aw
31. Se water version BASIC STANDARD or ADVANCED the user may need to D eee identify himself password or may be able to commence the measurements immediately 3 4 2 Quick Measurement Start Measurement Pre conditioning Please fill a suitable test sample into a sample cup Make sure the sample chamber chamber cup is well filled but not over the lip Do not compact the sample medium under any circumstances The greater the overall surface of the sample is the quicker and more precise the aw measurement will be Next place a product sample in the left chamber the measurement chamber Place a second sample into the pre conditioning chamber on the right side Close the cover and the equilibrium begins to develop Momentary values of aw and C are shown on the display Samples at very different temperatures from the chamber to save time it is recommended to place the next sample to be measured in the pre conditioning chamber in order to minimise the temperature difference The stable and analyse function may be started with the Start Stop eee button The yellow LED ANALYSING flashes When the value becomes Stable the green LED lights up The system send you as well an acustic ee D signal if it will be finished by a peep If the cover is opened or was not Analyzing Stable LED properly closed the STABLE function is interrupted and the analysing function can
32. ace always at first time the SAL T 0 75 a into the chamber This special point called basic calibration If you have one time trouble about the sensor it can be possible to fix this if you clear all cal point and start a new calibration with the SAL T 0 75 After that go down to 0 53 then 0 35 and 0 11 Now you can go forward with the 0 90 and at last 0 97 Check the 0 75 point at the end of a full calibration Calibration re adjusting go to the menu Settings gt Chamber settings gt Select chamber number gt calibration then 2 calibrate In case of close together points you will be asked to select the correct value that corresponds to the SAL T salt in the chamber www novasina ch 35 Select table for If the actual value is outside of the acceptable tolerance of the sensor a warning text appears Most likely that CM 2 sensor must be replaced l Point chaeber amp ETTE Calibration is possible you may be asked only once for a new sensor to enter the sensor password L blzplag col roints CG 1jClr col Pointe The calibration itself is then done immediately and confirmed by Calibration was successful Menu calibration 36 Ref 6 TE amp Du 7 e SAL T 97 rh and the older SALT T 98 rh never try to calibrate both o calibrate thir raint They are too close together and would disturb the measurement Attention If all calibration points have be
33. ate time important for maintenance 4 3 2 Samples Database Database of max 10 sample parameter definitions P Hle SS OPI U TO 18 ru u s irie Patana l The Samples database is a powerful tool for quickly and correctly setting all necessary parameters of a measurement relating to a type of sample Up to 10 different samples can be defined The name of the samples database can be chosen freely A Default sample was already created by default This can be written over added to or deleted as required To create further sample data in the database please select a free table space by pressing the soft key 0 9 or the corresponding number on the keypad After this the system prompts you to enter a suitable name confirm with ENTER Now the appropriate parameters for the sample can be entered and finalised by pressing the ENTER key Sample data is modified in the same way as it is created The following parameters must be entered as sample data Obvious name of the sample max 21 characters Set chamber temperature for this sample 0 50 C Stab observation time aw for this sample 1 30 min Stab observation time C for this sample 1 30 min lf sample data is no longer needed it can be deleted Select the corresponding row in the samples database table gt ENTER and then delete the corresponding name by pressing Clr key This frees up the table space for new sample
34. ated using the Novasina humidity standard SAL T at various measuring points For this purpose a special box set with 6 SAL T humidity standards is included with every LabMaster In this box are reusable salt tablets in the form of a sample cup that generate the following humidities 0 113 a 0 328 a 0 529 a 0 753 av 0 901 a and 0 970 a recalibration with SAL T standards www novasina ch 17 Hohissisg col roints J rir col points ECelibe st S Ta F irmasamadj Sen ar re Test PPF 27 Emma membr T Cor Fireverel r i wae re EAP JA pI Lj A DE T Jee geit Display all actual calibration points Reference and status of cal Clear one or all calibration points if necessary Calibrate one point see chapter 6 4 Protect the calibration with a sensor password Please refer to chapter 6 2 for further Information 6 Info System and chamber information Under this menu point system information on the L bMASTER PARTNER aw depending on selected chamber and sensor information can be called up Changes cannot be made Instrument type and serial No of the instrument Hardware revision level important for service Firmware software version important for service Currently installed sensor type important for replacement Serial number of the sensor important for service and warranty Firmware software version important for service Last calibration d
35. ber number first Select 3 for the stability observation time factor for aw or select 4 for the temperature observation time factor You will see some values from experience in the table below After several tries you can select the best time factors for your samples possibly also using the NovaLog MC analysis program A e The aw stability observation time is the interval of time in which the measured value may still vary by a minimum value though less than 0 001aw resp 0 1 C such that the instrument assesses it as stable Factory setting for aw 1 1 minute shortest time interval Factory setting temperature 5 5 minutes Factor setting range 1 minute 30 minutes Recommended stability time factor minutes Examples of products aw temperature Fruit jams tomato sauces Chocolate salmon pharmaceuticals Dried meat pastry products Clear soups stock concentrate Cheese Butter Sunflower oil Recommendation There are two ways to found the optimum of the Stability factor The optimum means a good balance of the measurement between speed and accuracy Either you can analyse the curve of the NovaLog MC for this probe or you can look it on the screen of the LabMASTER aw or analyse the difference between the actual value and the stable value For quickly attaining a stable value we recommend selecting the aw stability factor 1 but then continuing to measure and observe a change in th
36. ccurately and can detect a large gradient of temperature It may then display the following text reaching stability is retarded due to too great a temperature difference inside the measuring chamber Then you need to wait till the temperature of the sample will be the same like the chamber temperature After that start the analysing again 5 2 Important Notes About The Sensor General The sensor supplied with the Novasina LabMASTER aw was factory tested and then calibrated at the following seven aw value reference points 0 064 a 0 11aw 0 33a 0 53a 0 75a 0 90a and 0 97a Humidity sensors are subject to certain ageing phenomena which manifest themselves in deviations from the original value For the most part these deviations can be compensated for by recalibration We therefore recommend you to periodically check the accuracy at the humidity reference points and to recalibrate the instrument if required Correct handling of the sensor sensitive precision device Please observe the following rules in order to Note Before starting the measurement The Novasina sensor is a highly avoid measuring errors or even destruction of the sensor e Do not physically shock or dip sensors into liquids If the CM 2 sensor is dropped down it will be damaged or this result can be wrong e If substances with aggressive acidic vapours are present the sensors must be protected with a chemical pre filter system Contact you local N
37. data www novasina ch Sane Goren tise Su ga k cee uEtion d m Col ca et bd The sample data are allocated to a measuring chamber in the menu Chamber settings under point 1 Load from database There the desired sample data can be allocated the respective measuring station The deallocation is done under the same menu The link to the sample data is also automatically unmade as soon as a parameter is subsequently changed in the Chamber settings menu see status from Load from database Status OFF means no link to the sample data exists Status 0 9 a link to the sample data exists 4 3 3 Printer functions for external printer bes Rep emztttnsee E B J l From the software version V 1 05 C003 all LabMaster aw system have the ability to print out information about measurements and calibration on a printer The software supports the protocol standard ESC P Novasina recommends following printer models Seiko DPU 411 and 414 thermo paper printer only by RS 232 interface Protocol printout If you have connected by a RS 232 interface a printer to the LabMaster aw system and you have configured the device following chapter printer settings the system prints out the results automatically as soon as a Stable value is reached Actual measuring values of all connected measuring chambers are printed by pushing the button 0 9 on the LabMaster aw during the standard operation mod
38. e e inthe Stable protocol values are printed out that were valid at the time of stability Attention on the protocol the user name who is momentary logged in will be printed out as well Inthe Actual protocol values are printed out that were valid at the start of the printing process General system settings function extensions After the connection of the main supply and printer cable RS 232 part no 111 7473 all printing functions have to be activated by the LabMaster aw software This shall be done as following Communication Settings System settings Communication activation by selecting the menu point Printer For de activation please select the menu point PC selection for a connection with the NovaLog MC software Printer communication Settings System Settings Communication Printer configuration This menu point is only visible if the Device is set on Printer The following parameters can be selected Laboratory Laboratory or company name which should be printed on the protocol www novasina ch 19 Auto stable printout If setting is On the measured values are printed out automatically after reaching the stability as soon as the green LED is flashing Infor sation Far Startins the printout K Line feed form feed Selection of the number of empty lines after the p
39. e This is in princple the inverse part of an adsorption curve The substance must be more humid when starting to weigh to be safely on the desorption curve to avoid Sl hysteresis mistakes so the first salt to use is SAL T97 Upon reaching a value well above 0 9 SAL T90 can be placed in After about one hour or more note the aw value and weigh the substance Upon waiting longer the aw value as well as the weight are lower moving along the Sl curve so the waiting time is not critical After that place in SAL T75 down to SAL T6 Then after totally drying the substance in the oven the net dry weight is Known and all points can be plotted How to proceed 1 Weigh the tare empty substance basket and weighing glass 2 Lift up the cup with a screwdriver push the deeper cup into place 3 Place in the first SAL T standard 4 Place basket with substance on top 5 Now close the cover and select the desired chamber temperature 6 Wait until the chamber temperature is reached then wait for equilibrium stability observation time factor set as desired Weigh the net tara of the empty unit www novasina ch Put the SAL T standard into the Place the probe inside the basket over measurement chamber the SAL T into the measurement chamber Example of doing a Sorption Isotherm curve adsorption with a biscuit Selected temperature of Novasina instrument 25 0 C e The totally desiccated sample has a net weight of 0 485g
40. e aw value after the stable value has been displayed Many food products need a certain period of time to free the water molecules and reach equilibrium If you decide that the stable value deviates too much from the final value then the stability factor may be increased Please check as well the temperature This must be absolute stable and on the same level than the temperature of the chamber Otherwise any adjusting of these parameter will be wrong The temperature stability observation time may also be changed from the factor 5 set by Novasina to a higher factor for products with a temperature greatly different from that of the chamber e g chilled samples www novasina ch 29 30 5 5 Recording Desorption and Adsorption Curves water conten total water Most materials and all food products contain water There are two different kind of water in a probe A part of bounded water and free water A L bMASTER PARTNER aw measure only the part of free water into a probe But there is a compounding between the part of free water and bounding water of a probe The Sorptions isotherm chart gives the depending of both factors Such chart are valid and unique only for one type of probe Novasina has created a special SI set For such purposes using this set in combination with a LabMASTER PARTNER aw you can record such Sorpitons isotherm for a product Definitions The WATER or MOISTURE CONTENT is the w
41. e sample from the measuring chamber before an instrument is switched OFF A Note If possible always leave the instrument switched ON The integrated heating system protects the sensor from saturation and the instrument is always ready for the next measurement Atthe same time the next sample can be preconditioned to the correct temperature The power consumption is extremely low 5 3 Function Principle of Stability Observation The stability observation function if activated observes the changes in aw and temperature value Stability willbe shown when the change within a selected time frame is less than the accuracy of the instrument which is 0 001aw and 0 1 C The shortest time window is 1 minute stability time factor 1 the longest window is 30 minutes factor 30 At factor 1 stability will be reached the fastest but the aw value may be too far off the requested accuracy of the final stable aw value At factor 30 the highest accuracy is attained Changing ofthe aw value orthe probe temperature Example must be stable and must be smaler then d lt 0 001 a and lt 0 1 C aw Value temperature Stab observation time aw or C 1 30 Min a be Measurement intervall gt Analyzing stable www novasina ch 28 5 4 Setting Stability Observation Time Factors e Goto the menu Settings gt Chamber Settings if two or more channels are used gt Select cham
42. eight in of the tota water in a product Test methods are e g Karl Fischer Titration or drying balances The WATER ACTIVITY aw is the free water the only value that gives information on the micro biological safety of a product and especially important for foodstuffs In materials it is called the RELATIVE EQUILIBRIUM HUMIDITY rh The range of 0 00 1 00 aw corresponds to 0 100 rh The relationship between moisture content and water activity is the SI Sorption Isotherm curve which is product and temperature specific An absolutely constant temperature during all measurements is therefore very important aD 30 p Pectin Starch 20 Wheat Meat fish and eggs Cellulose Ir water activity aw 20 C SI Sorption Isoth erm curves of foods ao Caled water wapour isathsermms Examples of Sl curves www novasina ch Recording a Sorption Isotherm curve Setup the La bMASTER PARTNER aw The lower part of the probe chamber of a L bMASTER PARTNER aw must be prepared first Change the standard steerage to the special steerage for SI set Take a screwdriver No 2 and replace the steerage see pictures below Be careful regarding a deformation of the steerage that might affect a correct measurement Measure the precise weight of the special probe cap including the transprotation glass container This is important for the net weight definition after changing the weight following the humidification
43. en cleared you should start a new calibration with the base calibration using the SAL T 75 standard A first After calibrating this first point all other desired points can be calibrated in any order Type of Novasina EU Toxic Color Chem relative humidity in relation Literature Hum check classe ofsalt symbols of temperature x 100 in a Reference 15 C 20 C 25 C 30 C SAL T 4 CsF gt 25 SAL T 6 i LiBr SAL T 11 i LiCI SAL T 33 MgCl 6H O SAL T 53 Mg No 6H O SAL T 75 NaCl SAL T 90 i Ba c 2H O SAL T 97 K SO gt 20 SAL T 98 KC Lit A Greenspan Humidity Fixed points of Binary Saturated Aequeous Solutions Journal of Research of the National Bureau of Standards Vol 81A No1 01 02 1977 B Robinson R A and Stokes R H Electrolyte Solutions Butterworths London 1959 C Wexler Humidity and Moisture Vol 3 Fundamentals and Standards Robert E Krieger Publishing Company Huntingon New York www novasina ch 6 5 Clear Sensor Calibration Points This function clears all calibration points in one time and allows to make a full basic re calibration of the sensor A The only reason for clearing a pointis a value which is obviously wrong and no humidity standard available to correct it Clear all values if their accuracy is doubtful and make a full new calibration with new standards at least at 2 points for better accuracy at minimum 6 or 7 points from 0 064 to 0 97 a Go to
44. etting the unit into operation carefully Please keep this manual in a safe place where it will be at hand whenever you need it If you lose the manual please contact your Novasina representative for immediate replacement 1 2 Important Notes Intended use The Novasina LabMASTER aw or LabPARTNER aw is exclusively intended for measuring WATER ACTIVITY under strict adherence to the information and notes given in this manual Any use beyond this scope is considered to be a violation of the intended purpose and may endanger your safety or could result in the product being damaged Any use of this Novasina instrument other than as intended is at the customer s own risk and by no means will the manufacturer or supplier be liable for any resulting damage Safety instructions e The Novasina L bMASTER awsystem should be serviced maintained and repaired only by qualified people who are familiar with the equipment The LabMASTER aw system must not be used in hazardous zones or similar areas The design was made only for the laboratory field e No explosive materials and no highly inflammable substances may be measured in the measurement chamber system e Before connecting the unit to the mains ensure that e the mains voltage is within 90 260V at 50 or 60Hz Please check the name plate of the system the power cable between the mains and the instrument is not damaged e The Novasina LabMASTER aw system may be used only under
45. fective z l Table temperature sensor cabling gr cornet Os UMEME Orne Pall trol electronics defective Temp gauge head Table temperature sensor cabling trol electronics defective TT GON Sturn the instrument for repair nized Sensor cabling or electromiesinstrument for repair defective Data system of humidity measurenteneplace humidity sensor send system defective Sensor cabling or etse instrument for repair tronics defective Humidity sensor file system Humidity Sensor capability of humidity measurement a humidity measrement cell capability tem is wrong Sensor is incompatibl amp i the latest technology the instrument Capability Firmware capability of measuring chamber eleqtfgqate the firmware nics wrong CRC F Settings EEPROM content factory setingsde stroyed destroyed Humidity Gauge Humidity measurement system cg voie a new humidity measrement analog or electronics defective BUS BUS error Communication between Check the cabling of the LabMASTER and PARTNER faulty LabPartner aw File format not Sensor incompatible data format Update the latest software use Supported a suitable humidity sensor UI H H D D ER Sensor incompatible test circuit deca suitable umdili sensor The battery of the data Battery empty defective or no batter lease contact your Novasina rep memory must be re
46. hown after selecting the point and pressing Select The information will show up in a new window 6 4 Calibration Procedure Chasher settines Chasber B aS a m m s lt e pe mm mm mm m mmm Menue calibration Before calibrating we recommend having the instrument switched on for several hours e g over night with chamber temperature set between 15 and 30 C standard is 25 C so the following morning the calibration can be started this time is necessary for the temperature stability and accuracy of the many electronic components inside the device If the SAL T standards are at a greatly different temperature than the chamber please place the next SAL T standard in the pre conditioning chamber The calibration time will be shorter Place a SAL T humidity standard in the measurement chamber and putthe next SAL T standard inside the pre conditioning chamber then close it Set the aw stability and temperature time factor to 5 minutes and start the ANALYSING or wait for atleast45 minutes It is important to reach an equilibrium in humidity as well as in temperature A calibration is only possible within a certain temperature range The sensor carries all humidity standard values in function of the temperature so a Calibration is always correct within the stored temperature range of astandard Usually 15 to 30 C is a sufficient range Extended ranges may be available for future sensor units on request Please pl
47. ime Your Novasina MORE THAN 50 YEARS OF EXPERIENCE Consulting Sales and Service Novasina AG Neuheimstrasse 12 8853 Lachen Switzerland Telephone 41 55 642 67 67 Fax 41 55 642 67 70 e mail info novasina ch www novasina com novasina The Art of Precision Measurement
48. ins Switch the mains power on if necessary e Switch on the L bMASTER aw by the power switch on the front of the instrument lower right corner The display will light up The instrument takes a little time and automatically begins to correct the temperature in the measuring chamber if actual and set values are different Note The Novasina LabMASTER aw consumes very little power and is designed for continuous operation You may therefore leave the unit switched on even during prolonged interruptions between measurements so that it is ready for measurement at any time The precision of the instrument will be stable even after a few hours of continuous operation internal temperature stability of all electronic components After reaching the set chamber temperature the instrument is ready it takes approx 5 min time You can now start your first measurement by placing a sample inside closing the lid of the LabMASTER aw and pushing the Start button on the keypad The instrument confirms the start with an acoustic signal and the yellow LED above the LCD screen blinks For modifying the factory settings adding users passwords buzzer duration etc please see chapter 3 6 System Settings For opening the chamber push the opener back and press the cover a little bit down www novasina ch 3 3 Adding An Additional Channel LabPARTNER aw Once you have switched on the LabMASTER aw ADVANCED for the first time y
49. ion Points A 35 6 4 Calibration Eege 35 6 5 Clear Sensor Calibration Points aa arar eege ege 37 6 6 Interfaces RS 232 and USB EE 37 Di dl En E uuu uuu E E u AZ 38 E e fi sea E E EE E E E OE EERS 38 7 2 Sensor Recalibration with Humidity Standards AAA 39 3 Replacing Protective TEE 39 74 Replacing a CM 2 Sensor ln UE 41 5 Replacing an Instrument E 42 8 Technical specifications 43 8 1 Equilibrium humidity values of the SAL T humidity source 44 2 BN Ne EE e e dl e WEE AA 9 1 What is wirong WHefi 9 ce cn onset perce sin peepee eis ree det eet wesc es ew eet odes eee eee 44 9 2 ENOr EE 45 10 Short Menu overview U U U u u u u u u 46 www novasina ch 1 Introduction 1 1 Starting Out Thank you for having purchased an instrument of the Novasina LabMASTER aw system for measuring water activity You have opted for a highly accurate and reliable instrument representing the latest state of the art in electronics and software design when it comes to highest precision in a water activity measuring To get the most out of all the possibilities of your Novasina LabMASTER aw or LabPARTNER aw and to guarantee safe reliable operation please read these operating instructions before s
50. ke sure no water is entering the housing or the connectors Caution Do not use aggressive cleaning agents Caution Please do NEVER clean the sensor CM 2 itself It is not A possible to do that The sensor is an very sensitive element with a chemical filter protecion on the top If you blow or touch the filter with a mechanical part or if you try to clean it with any liquid cleaning products the sensor might be damaged www novasina ch 38 7 2 Sensor Recalibration with Humidity Standards Like all precision measuring instruments the Novasina humidity sensor must be checked periodically After initial commissioning of the instrument we recommend carrying out a calibration every couple of months always before measuring critical products at minimum those points covering the products aw range when the instrument was not used over a period of time Novasina developed a simple method for checking the sensors with humidity standards The humidity standards are saturated aqueous salt solutions consisting of pure chemical salts and distilled water If the humidity standard is in thermal and humidity equilibrium with the sensor it can be seen if the displayed value is within the user s tolerance band or outside If the deviation is greater than desired a recalibration is recommended The humidity standards should be saturated so that they form a slushy slurry Before use we recommend to shake the humidity standard vig
51. llation Novasina precision measuring instruments are supplied in sturdy specially lined cardboard packaging with all necessary accessories Upon receipt please check first to make sure everything is present and immediately notify your Novasina sales partner if anything is missing or broken Do not put damaged or incomplete measuring instruments into operation The equipment must be installed in a laboratory on an even surface avoiding vibrations strong heat radiation air flow and dust There must be a perimeter of at least 30 cm of free space around the entire measuring instrument since it can momentarily give off great heat The temperature controller may generate excess waste heat depending on settings which is dissipated through the vent holes in the housing and by the built in fan The fan is thermostatically regulated There must be unobstructed air circulation around and especially at the back of the instrument Into Operation Check the mains voltage The instrument accepts 90 260VAC 50 60Hz Also check that you have the right power cable for you instrument 3 Putting Into Operation 3 2 Putting Main fuse f Caspa lo Main power plug Mains plug for PARTNER 10 Backside of an LabMaster system Mi D ree 7 wt Iki pa sia KC ut K Way ee tert fr rae i 7 i 7 F 4 SS z Main switch of the LabMaster aw e Insert the power cable into the instrument socket and plug it into the ma
52. not be started 3 4 3 Changing the Reading Display E Every LabMASTER aw has two different display modes for the current reading These will be referred to below as single chamber display mode get l and summary chamber mode Single chamber mode only shows the Single current reading from the selected chamber number This can be changed chamber with the software button Select chamber In summary chamber display are Mode the current readings of the entire system are shown At the same time it can be checked in this display mode which LabPARTNER aw device No a LabMASTER aw is communicating with Note When the instrument is switched on the last set chamber No and Cum the actual aw and temperature values are displayed You can as well check the communication status of all other LabPARTNER aw on the system with the summary chamber mode Ap Multi summary Chamber mode 12 3 4 4 Change Selected Chamber Temperature U See le dnigbsgg aH ETc D Spgtunsnn Okami E ee P Lead from detec Tnm CESS Tis Fi JTE Ge hes E Please select __ Push the function key Settings to switch into the system menu There you can adjust any chamber samle and systems parameters Select the point 0 Chamber settings on the screen and press ENTER The selection can be in two way Either by pressing 0 on the keyboard or moving the highlight up or down using the
53. of the acoustic signal upon attained stability can be set with this Volume noise 0 9 O low 9 high Stable buzz duration 0 120 sec 0 OFF 4 LCD Settings for all LabMASTER aw versions The contrast and backlighting can be individually adjusted for optimum screen readability Contrast I 0 9 Backlight I 0 9 0 OFF Since the backlighting is LED lighting it is always switched on This does not affect the service life of the instrument 5 Communication abilities of LabMaster aw versions page 14 It is possible to select various special output devices depending on which firmware version is being used Currently the PC and Printer devices are defined With the PC device LabPartner units 1 9 can be connected parallel over the LabMASTER aw the main unit to a PC that is running the NovaLog MC analysis software and thus data transmitted online If you set the Printer device and a printer is connected and configured with a LabMaster aw over the RS 232 interface a protocol can be printed out It is possible to print out the stable or actual protocol Further settings for the printer or the protocol can be made under printer configuration If the Printer device is set there is the possibility to print out a single or several calibration points by pressing the printer function button under Display cal points Should for example the measurement data from the LabPARTNER aw with measuring chamber
54. of the probe Preparing a probe Fill the special metallic sample cup to 2 3 with the crushed probe in order to get the maximum possible surface Keep your probe always inside the glass container when you are not using it for measurments inside the chamber Adsorption curve In order to start the substance must be dry so it must first be totally desiccated in an oven e g 2 hours at 102 C depending on the material 1 Close the glas container immediately after taking it out from the drying oven and for transportation 2 Weigh the probe afterwards with the closed weighing glass on a precision balance and define the net weight of the probe 3 Put first the SAL T 6 in the deeper measurement chamber and afterwards the probe inside the stainless steel basket over it and close the chamber 4 After about one hour or more write the aw value If you wait longer the aw value as well as the weight become higher moving along the Sl curve Therefore the equilibration time is not critical 5 Weigh the probe again and write the net weight in a table and calculate the difference between the weights before and after humidification 6 Put the next SAL T into the measurement chamber and perform the same operation at point 2 3 etc up to the SAL T 97 humidity standard Based on the acquired data you can define and print the Adsorption curve for a specific product on a paper www novasina ch 31 32 Desorption curv
55. orously Note Under normal storage and maintenance conditions the humidity standards will last for several years 7 3 Replacing Protective Filters The use of special pre filters available as accessories is recommended as protection against faster sensor aging due to chemical aggression A destructive effect on a sensor may have e g alcohols aromas amines acids lactic formic sulphuric hydrocarbons halogens etc Please consult the protection filter specifications General rule Chemical pre filters are to be used if the admissible workplace concentrations MAK values are exceeded Some examples sulphur dioxide gt 2 ppm formaldehyde gt 2 ppm hydrogen sulfide gt 3 ppm ethanol gt 300 ppm www novasina ch 39 40 Novasina offers the following protecion filters for the LabMASTER PARTNER aw e Redox filter Chemical filter protects against all kinds of alcohols aromas fragrances e eVC 21 chemical filter Chemical filter protects against hydrogen peroxide acid gases diluted acetic and formic acid sulfur dioxide chlorine eVC 26 universal filter Chemical filter protects against a multitude of aggressive substances e g nitrogen oxides amines aldehyde solvents aromatic hydro carbons oil vapours fine dust particles eVALC 1 alcohol filter Mechanical filter protects against alcohols Note Certain aggressive vapours may also influence the measured result Exac
56. ou can connect one or more LabPARTNER aw units onto the modular system as needed Please follow the procedure below to do this Switch OFF the LabMASTER aw unit de ee e Connect the power cable from the LabMASTER aw to the LabMaster aw LabPARTNER aw unit The power cable can be max 1 8m long Chamber 0 Note The first LabPARTNER aw unit is powered through the LabMASTER aw all subsequent LabPartners up to 9 in total are powered in serial from LabPartner to LabPartner Communication bus line Serial power line LabPartner aw Chamber i gt To avoid power surges over the instrument s power supply LabMASTER aw delays the powering on of all connected LabPartner units An acoustic signal is given as each instrument is turned on e Switch ON the L bMASTER aw unit gt Select the desired channel number of the connected L bPARTNER aw please consult the programming section of the LabPartner aw LabPartner aw operation manual Chamber 9 e Switch OFF the LabMASTER aw unit and connect the communication cable between the LabMASTER aw and LabPARTNER aw Communication bus line Serial power line Note The connector cable with 1 8 m cable and corresponding plugs comes with every L bPARTNER aw Make sure the cables are plugged into the correct place on the back of the LabMASTER aw and LabPARTNER aw e Switch ON the L bMASTER aw unit The LabMASTE
57. ovasina dealer for the suitable filter protection Otherwise the system might drift away permanently e Condensation saturation humidity 100 rH which can be caused by sudden temperature changes should be avoided Sensors that are not in use should be stored in a dust free neutral atmosphere at room temperature and ambient humidity both chambers in the instrument must be empty before switching OFF the power of a Lab MASTER PARTNER aw www novasina ch i e Never open or take the measuring cell apart or clean the sensor with any chemical or mechanical parts The sensor itself is not cleanable All attempt will expire the warranty e Under no circumstances connect the sensor to an Ohmmeter or such like This may damage the sensor and will expire the warranty of the sensor Any warranty will expire if one or more of these points counteracts Measurements up to 1 000 a The sensor is capable of measurements up to 1 00 a 100 RH A built in heating system protects the measuring cell from saturation and therefore against destruction The following points must be borne in mind e Theinstrument must be switched on before a product sample is placed into the measuring chamber Please wait until the instrument has reached the chosen chamber temperature At the same time the next sample can be placed in the pre conditioning chamber to reach the same temperature before it is measured Always first remove th
58. parameters can be set One for the aw value and one for the temperature in C The range of the stabilty parameter will be from 1 up to 30 min To keep within these parameters the change in measu rement reading may not be greater than 0 001 aw or 0 1 C during the set time If both criteria are fullfiled over the observation time the measurement will be finished and you see the result on the lower part of the screen Please refer to chapter 5 4 of these operating instructions for further information Stab observation time aw range 1 30 min stable if the aw value deviation is less than 0 001 aw during this time Stab observation time C range 1 30 min stable if the chamber temperature value deviation is less than 0 1 C during this time www novasina ch 13 4 14 Description Instrument Functions The modular LabMASTER aw system has a great variety of functions depending on software version and expansion status These shall be described in detail below The table below shows which functions are activated in which expansion status It will be possible to update an BASIC or STANDARD to the next possible version or directly to a ADVANCED version of a LabMASTER aw The way is very simple and code driven A new code can be ordered through your local Novasina representative BASIC STANDARD ADVANCED Date and time Measurement analysing Probe data base Single user Login Logout
59. peration manual www novasina ch 2 4 Standard Delivery Novasina L bMASTER aw BASIC AW measuring instrument with precise temperature stabilised sample chamber and additional preconditioning chamber basis software without user administration management and without samples database system This instrument can only be operated as a stand alone system No analysis programs for PC Novalog MC and no cable are included An connection to an external RS 232 printer is possible It is as well possible to expand the instrument to a higher software level with additional functions at any time by a version code Standard accessories Set with 5 humidity standards SAL T 11 33 75 90 97 50 sample cups Operating instructions Novasina LabMASTER aw STANDARD single channel control AW measuring instrument with precise temperature stabilised sample chamber and additional preconditioning chamber standard software with user administration management and samples database functions This instrument can only be operated as a stand alone system It can communicate with a PC based computer system required PC based software included over a USB RS232 interface An connection to an external RS 232 printer is possible It is as well possible to expand the instrument to a higher software level with additional functions at any time Standard accessories Set with 5 humidity standards SAL T 11 33 75 90 97 50
60. rotocol With that function you can define the right position of the paper tear off line If there is no number input delete 0 FF a one page feed will be performed Back to operating mode Ifyou want to quit the menu after selecting Printer under menu Device there is a information window confirming that actual printouts can be started by selecting a button 0 9 This shall be confirmed by pressing the function button OR Printing of calibration data Prerequisite Activation of the printer function in the System settings lf the LabMaster aw is configured on a printer single or all calibration points can be printed out by selecting the printer function button under the menu point Display cal points Settings on the measurement chamber Biselay cal Pointsi Cha SE 3 Settings Chamber Settings Calibration A Foint A B daw pe _ Displ cal points or Sec Displ single cal points ___Bef veluc 6 82420 Ineut volun 8 82550 Tearer ature z mr Ifyou press the printer function button in the general view all calibration points will be printed out adjusted and not adjusted points and information about date time instrument and user of each single point will be also printed If you select the printer function button in the single view only selected calibration points will be printed Printouts on Seiko Printer lt lt x k k x k lt
61. s the password has access to the first recalibration of the sensor The password protects only the sensor and is stored on the sensor itself This is set after the first full calibration in the facory factory setting of the sensor password is 8808 Please change it as a system administrator immediately when starting operating the device After that recalibration is freely accessible exception after a reset to factory settings Attention Store the password together with your system administrator password ona secure place An forgotten password means to send the sensor back to Novasina There is no way to reset the sensor Set a sensor password Go to menu Settings gt Chamber settings gt Select chamber number only if you have 2 or more chambers activated then press 5 Calibration gt n 3 now type a password www novasina ch 6 3 Display Sensor Calibration Points Citar cal npn Set alat a G nn h ices Sie U ___ 2 Eer Q Ll5sa Information about each calibration point can be seen in this menu Each calibration point is stored directly on the intelligent sensor Information like calibration date time and user who performed the are accessible Go to menu Settings gt Chamber settings gt Select chamber number only if you have 2 or more chambers activated then press 0 display calibration points choose a point If it has been calibrated details of the last calibration will be s
62. sample cups Operating instructions e Interface RS232 PC cable 1 8m D Sub 9M 9F and USB cable e PC software NOVALOG MC for Win9X 2000 NT XP Novasina L bMASTER aw ADVANCED multi channel control AW measuring instrument with precise temperature stabilised sample chamber and additional preconditioning chamber standard software with multi user administration nanagement and samples database system System extension via bus line to a L bPARTNER aw possible The software for this instrument allows a multi unit measurement system with up to 9 LabPARTNER units But can also be operated as a stand alone unit The instrument communicates with a PC based computer system over a USB RS232 interface and with the L bPARTNER units with a Field Bus system required software is included An connection to an external RS 232 printer is possible Standard accessories Set with 5 humidity standards SAL T 11 33 75 90 97 50 sample cups Operating instructions e Interface RS232 PC cable 1 8m D Sub 9M 9F and USB cable e PC software NovaLog MC for Win9X 2000 NT XP www novasina ch Novasina LabPartner aw max 1 9 units on a network Modular expansion of the measuring station by one or more measuring and preconditioning chambers can be achieved over an internal network using LabPARTNER aw units Standard accessories 50 sample cups e Power and communication cables both 1 8m from MASTER to PARTNER unit
63. suring chamber nominal temperature the LabMASTER PARTNER aw requires some time to settle down to the new chamber temperature During this time no exact aw measurement is possible Every completed input must be confirmed with the OK soft key 3 Stab observation time aw stability condition of aw value After commencing measurement the analysis phase of the aw value sample measuring is activated The observation time over which the change in aw value must be less than 0 001 aw can be optimised for each sample Together with Stab observation time C this is the most important criteria that must be met for an exact and reliable stable value display The time range of the Stab observation time aw is 1 0 30 0 min Only whole number values are accepted 4 Stab observation time C stability cond of probe temperature After commencing measurement the analysis phase of the temperature Stability of the sample measuring is activated The observation time over which the change in aw value must be less than 0 1 C can be optimised for each sample Together with Stab observation time aw this is the most important criteria that must be met for an exact and reliable stable value display The time range of the Stab observation time C is 1 0 30 0 min Only whole number values are accepted 5 Calibration With this function every L bMASTER PARTNER awcan be periodically checked and if necessary recalibr
64. temperature x 100 in a Reference 15 C 20 C 25 C 30 C SAL T 4 CsF gt 25 SAL T 11 SAL T 53 SAL T 90 SAL T 98 Lit 9 Troubleshooting Mg NO 6H O 55 9 Ba Cl 2H O orange K Cr O A Greenspan Humidity Fixed points of Binary Saturated Aequeous Solutions Journal of Research of the National Bureau of Standards Vol 81A No1 01 02 1977 B Robinson R A and Stokes R H Electrolyte Solutions Butterworths London 1959 C Wexler Humidity and Moisture Vol 3 Fundamentals and Standards Robert E Krieger 9 1 What is wrong when A connected LabPARTNER aw is not found by a L bMASTER No recalibration of the aw value is possible You have a drift of the aw value after completing the analising process Cooling power of the instrument is at the limit and the temperature of the chamber is not stable Reading of the LCD screen is very bad You as a user you have forgotten your password 44 1 Your LabMaster has not the ADVANCED functions activated 2 The bus cable or the mains power is not connected correctly 3 Another LabPARTNER in the system has the same chamber No The user managment system does not allow the calibration function The sensor is protected with an additional password Your sensor is damaged or badly contaminated Change the sensor immediately The stability observation factor for aw or C is to short in time The temperat
65. tic moisture sensors that stand out for such unique properties for more than 40 years The intelligent resistive electrolytic sensor integrated into the LabMASTER or PARTNER awis based on the latest Novasina Novalyte Technology with which one can guarantee such precision and reproducibility Thanks this technology an aw meter as has never been attained before The complete LabMASTER aw system comprises various modular components The system can thus be optimally adapted to the customer and his requirements The components of such a system are essentially as follows LabMaster aw _ LabPartner aw 1 9 PC analysis software for LabMaster Partner aw www novasina ch 2 2 System Architecture Sensor Dispis Siorlzcp fer oriarcp Soltwar bed rot P E p WE S 27 TF Mrzaar Save ntenncs eigtl A LabMASTER aw can be operated either alone or as controlling unit in a network The connection between this main unit and up to nine LabPARTNER aw network components is established over a special communication circuit The L bMASTER aw is normally powered from a mains socket To avoid high inrush currents the connected LabPARTNER aw units are fed power directly from the L bMASTER aw The LabMASTER aw can communicate with other computer systems such as a Windows PC or laptop over a USB or RS 232 interface The appropriate software for analysis and data recording comes included with the STANDARD and ADV
66. tly for that reason the use of an appropriate protection filter is highly recommended A combination of 2 filters may also be used for overall protection e g eVC 21 and eVALC 1 Filter replacement Chemical filters must be periodically replaced Saturated filters falsify the measuring results and the protective effect of chemical filters also deteriorates No generally valid guidelines can be given concerning the filter service life as this mainly depends on the concentration of harmful substances and the operating temperature Attention A damaged filter must be replaced immediately Please replace as well any chemical filter periodically and calibrate the system WITH the filter on board Do not handling at any time into the chamber without any glove All filter are fixed into the head of the measurement chamber with a snap ring It will be possible to put maximum 2 filters in serial line direct behind the sensor and in front of the measurement chamber Every filter protection helps to extend the lifetime of the sensor itself but extends as well the measurement time www novasina ch 7 4 Replacing a CM 2 Sensor Unit Switch off the instrument and disconnect the mains from the system Remove the 3 screws tool is inside the SAL T set carefully pull out the e measuring block NEVER let drop this unit on the instrument table Remove the two sensor unit screws on the backside of the measuring block e Pull out the CM
67. turn CR TO T A Line feed LF xxxxxxx www novasina ch 37 SSES Instead of communication over a RS 232 interface it can be made over the USB interface USB interface integrated in the La bMASTER aw A suitable USB plug is integrated on the back of the unit Please use ordinary USB cables that are available in computer stores The USB interface uses the USB 1 1 standard As soon as you connect a La bMASTER awwith a USB cable to a Windows PC Windows will ask you to install two new drivers for the USB as well for a virtual RS 232 interface to the NovaLog MC software You will find the drivers on the Novasina NovaLog MC CD under directory USB Driver After successful installation the NovaLog MC program can be connected on a virtual USB COM port and then receive data from the USB interface Please check which virtual COM port no is used in your Windows system after the driver installation This is an important information for the NovaLog MC software and essential for a working data transmission RS 232 interface It is not possible to operate both USB and RS 232 at the same time USB always takes priority over the RS 232 interface 7 Maintenance 7 1 Cleaning Caution Before cleaning switch OFF the Novasina LabMASTER aw A and dis connect it from the mains Use a damp cloth to clean the housing of the Novasina LabMASTER aw ora LabPARTNER aw Use a commercially available mild cleaning agent as required Ma
68. ure of the probe is not in equilibrium Chamber The probe has an second sorption step A fat barrieres or something else The abient environment temperature around the instrument is too high The probe produces a chemical heating Process The internal cooling control does not work properly The contrast of the screen is very low contrast 0 The backlight is turned off or the background light is low The ambient light is bad Please change the place of the instrument Contact your system administrator he can change your old password to a new one If you are a system administrator you have to reset the system to the factory status or send the instrument to the next Novasina service station 3 Reload the software via RS 232 or USB on the L bMASTER gt You loose all personal settings of the system www novasina ch 9 2 Error message screens lf any error message appears on the LabMaster aw screen please proceed as follows k Hardware Errors PELTIER Driver Fan Temp control temp gauge Please write down the error message carefully Switch the instrument off and restart If the error message recur please follow the instructions on the table and or contact your Novasina representative www novasina com I i i cooling unit or electronics defective return the instrument for repair ventilator cabling or fan elect onic turn the instrument for repair de

Download Pdf Manuals

Related Search

Related Contents

Lucasey LC200DS2 flat panel wall mount  最高峰 。  EBox Series 1 Manual - E  H3000 Autopilot Handbook - Chicago Marine Electronics  KitchenAid 2 CM) Range User Manual  Risk Simulator User Manual - Oracle Crystal Ball Software and  Francais manuel d`utilisation  SINAMICS - Siemens  courrier ci-joint (15/02/2011) (108 ko)  IMPORTANT INSTRUCTIONS MODE D`EMPLOI  

Copyright © All rights reserved. Failed to retrieve file