USER MANUAL OPTIMA BIOGAS Table of contents Information for product and safety ............. 7 1.1. Safety manual ....................... 7 1.2. Safety precautions ....................7 1.3. Ensure safety ......................8 1.4. Important general information (EN 50379 and VDI 4206) ..... 8 1.5.
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USER MANUAL OPTIMA BIOGAS 6.4. Measuring with grid power supply / Battery charging ......35 6.5. Measurements in battery mode (battery monitoring) ......35 6.6. Operating temperature ...................36 6.7. Control Condensate separator ..............36 6.8. Connections and tightness ................36 6.9. Automatic zero point ..................37 Repeat zeroing ......................37...
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USER MANUAL OPTIMA BIOGAS Export sites ........................63 Export measurements ..................... 64 8.5. Measurements in Data storage ..............65 View measurements ....................65 Delete measurements ..................... 66 Extras / Adjustment ................68 9.1. Service menu ...................... 68 9.2. Default settings ....................69 9.3.
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USER MANUAL OPTIMA BIOGAS Create your own logo ....................94 Import logo into analyser ..................96 Delete logo........................96 Declaration of conformity............... 97 MRU GmbH, D-74172 Neckarsulm 6 / 98...
USER MANUAL OPTIMA BIOGAS Information for product and safety 1.1. Safety manual All general information and safety precautions of MRU products are listed in the supplied separate safety manual. Therefore, this manual must be read and observed before the first use of the instrument .
USER MANUAL OPTIMA BIOGAS 1.3. Ensure safety ► Please read the user manual completely before the first use. ► Only use the analyser for the intended use and within the parameters specified in the technical data. ► Do not use any violence.
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USER MANUAL OPTIMA BIOGAS 1) Inhaling toxic gases is harmful to health and can even cause death in some cases. • It is the responsibility of analyser user to ensure that person is skilled and trained in safety aspects of gases being analysed and procedures to fol- low while using this instrument.
USER MANUAL OPTIMA BIOGAS 1.5. User guideline for rechargeable batteries NOTE The rechargeable batterie is installed inside the analyser and is not accessible to the end customer. However, the following instructions must generally be observed when handling lithium-ion rechargeable batteries.
USER MANUAL OPTIMA BIOGAS Introduction • This manual enables you to understand and safely operate this MRU Ana- lyser. • Please read this manual with great vigilant and get familiar with the prod- uct before using it. • This Analyser may only be operated by competent personnel and for its intended use.
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► Modifications or changes to the measuring device are not allowed. Our analysers are checked according to the following regulations: VDE 0411 (EN61010) and DIN VDE 0701 before they leave the MRU GmbH factory. MRU technical products are designed and manufactured according to DIN 31000/ VDE 1000 and UVV = VBG 4 of the professional guilds for fine me- chanics and electrical engineering.
USER MANUAL OPTIMA BIOGAS 2.2. About us The analyser is produced by the MRU GmbH in Neckarsulm, Germany (Founded in 1984), a medium sized company that specializes in developing, producing and marketing high quality emission monitoring analysers. MRU GmbH produces a wide range of instruments, from standard analysers up to tailor made industrial analysers.
Hazardous waste must be returned to MRU prepaid. 2.5. Return of electronic equipment MRU is required to accept the return, for proper disposal, of all analysers de- livered after 13th of August 2005. Analysers must be returned to MRU pre- paid.
USER MANUAL OPTIMA BIOGAS Description 3.1. Gas flow diagram The analyser extracts a partial volume of the biogas and analyses it for its components using NDIR and electrochemical sensors. Position Description Biogas sampling hose Connection to gas outlet Condensate separator...
USER MANUAL OPTIMA BIOGAS 3.2. Analyser The analyser consists of a compact and robust glass-fiber reinforced plastic hous- ing. All connections relevant for the measurement are located on the bottom of the analyser. MRU GmbH, D-74172 Neckarsulm 16 / 98...
USER MANUAL OPTIMA BIOGAS Position Description Position Description Keypad Gas outlet Condensate separator Temperature connection T1 / T-Ambient air Display Temperature connection T2 / T-gas IR-Interface Connector AUX USB-Port / Charging port Sampling probe connec- tion Condensate separator SD-card reader (Only by us-...
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USER MANUAL OPTIMA BIOGAS Condensate separator with- out water stop filter Remove the condensate separator by lifting it out from the groove (1) of the analyser. Then pull out the condensate separator downwards (2). Liquid discharged from the condensate separator may be slightly acidic.
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USER MANUAL OPTIMA BIOGAS Condensate separator with- out water stop filter The water stop filter protects the analyser from moisture. The water stop filter closes as soon as there is a risk that condensate is sucked into the analyser. A closed water stop filter can be indicated, for example, by the fact that the flow rate is too low.
USER MANUAL OPTIMA BIOGAS 3.4. Extraction probes In combination with the analyser, gas sampling probes are offered in differ- ent versions with fixed probe tube or with exchangeable probe tube. For a complete overview of accessories, see the company's current price list.
USER MANUAL OPTIMA BIOGAS Operating 4.1. Display All the information needed for the operation of the analyser can be obtained from the analyser's display, which contains the following information. Position Description Menu bar Display panel Menu Measurement values Function key bar...
USER MANUAL OPTIMA BIOGAS 4.2. Keypad Description of the keys and their functions: Function A short press switches the an- ON/OFF alyser on without delay. Switching off the device is de- layed protecting the sensor when no ambient air is pre- sent.
USER MANUAL OPTIMA BIOGAS 4.3. Menu structure The analyser organizes all available actions into three main menus: • Menu Measurement Here you will find all actions for the measuring tasks of the analyser. All installed measuring tasks are listed here and can be se- lected.
USER MANUAL OPTIMA BIOGAS First usage After ensuring that the analyser is ready for operation, you can make some customer-specific adjustments during the initial startup. All settings can be changed at any time later. 5.1. Preparatory steps ► Unpack the analyser.
USER MANUAL OPTIMA BIOGAS 5.3. Export and import settings You have the possibility to export saved settings to an SD card and import these settings to another analyser. Export user settings ► Make sure that there is an SD card in the analyser.
USER MANUAL OPTIMA BIOGAS Import user settings ► Insert the SD card with the exported settings into the desired analyser. ► Go to the menu Settings. See also chapter 5.2 Customize settings, Page 24. ► Press the menu key.
USER MANUAL OPTIMA BIOGAS 5.5. Set Bluetooth parameters Depending on the features, the analyser can be used to exchange measure- ment data wirelessly with external devices: • With MRU4U (App for Android and iOS Smartphones) • With MRU4Win • With MRU Bluetooth-Printer Depending on the software version of the analyser and the technical realiza- tion of the Bluetooth interface, settings for data transfer may be required.
USER MANUAL OPTIMA BIOGAS 5.6. Setting date and time If the built-in rechargeable battery is completely discharged, a new setting of these values is required ► Press F3. The Extra menu appears. ► Select Date / Time. ► Press OK.
USER MANUAL OPTIMA BIOGAS 5.8. Set CO-Limit ► Select Exhaust Gas measurements. ► Press OK. The menu Fuel type selection appears. ► Select the desired fuel. ► Press OK. The menu Exhaust Gas Measurement appears. ► Press the menu key ...
USER MANUAL OPTIMA BIOGAS 5.10. Select fuel types and O reference NOTE Note that you can only select the Fuel type selection if the combustion calculation has been switched on. See also chapter 5.4 Set measurement, Page 26 Each time a measuring program for flue gas measurement is called up, a fuel can be selected from a list.
USER MANUAL OPTIMA BIOGAS Set O2-reference ► Go the menu Fuel type list. See also chapter Add fuels to fuel type selection, Page 30. ► Select the desired fuel. ► Press F3. The menu Info fuel type appears.
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USER MANUAL OPTIMA BIOGAS NOTE The last 4 fuels in the menu Fuel type list are the user fuels. The user fuels are indicated in the menu Fuel Type list in green colour. ► Go the menu Fuel type list.
USER MANUAL OPTIMA BIOGAS ► Select the desired fuel parameter. ► Change the desired fuel parameter. ► Press OK. The defined user fuel appears in the menu Fuel type list. You can add the defined user fuel to the menu Fuel type selection.
USER MANUAL OPTIMA BIOGAS 5.13. Configure zoom window In each measuring program, a zoom window is available for the enlarged display of measured values. You can choose between two zoom views. ► Press the arrow key at the top to display four measured values with the respective curve.
6.2. Ensure power supply The analyser can be used with: • with the internal MRU battery (provided) • with the MRU battery charger (provided) External equipment may only be connected while the analyser is switched off! 6.3.
USER MANUAL OPTIMA BIOGAS 6.6. Operating temperature If the analyser has been stored at low temperatures, it will require some time to equilibrate to the ambient temperature before being switched on. If it does not equilibrate, condensation will occur inside the analyser!
USER MANUAL OPTIMA BIOGAS 6.9. Automatic zero point NOTE The probe must not be in the exhaust gas during the zero- ing. ► Switch on the analyser. The analyser autonomously carries out a zero-point measurement. During zeroing, the -> 0.0 <- symbol flashes in the upper right corner of the display.
USER MANUAL OPTIMA BIOGAS Performing measurement In the basic configuration, each analyser has the complete functionality you need for gas measurement. The process of gas measurement is described below. The description of other optionally available measuring programs can be found in the appendix or on separate supplementary sheets.
USER MANUAL OPTIMA BIOGAS 7.2. Perform Biogas measurement ► Select Biogas measurement. ► Press OK. The menu Biogas measurement appears. NOTE If necessary, a message appears that a new zero point must be taken. ► Confirm the message with OK.
USER MANUAL OPTIMA BIOGAS 7.3. Perform Exhaust Gas measurement ► Select Exhaust Gas Measurement. ► Press OK. The menu Fuel type selection appears. ► Select the desired fuel type. NOTE Note that the menu Fuel type selection differs depending on whether the combustion calculation is activated or de- activated in the menu Measurement settings.
USER MANUAL OPTIMA BIOGAS NOTE You can start a measurement with the previously set meas- urement parameters directly from the Measurement menu. ► Press F1. The measurement is started. Measurement window The measured values are organised in three windows of 7 measured values each.
USER MANUAL OPTIMA BIOGAS 7.4. Perform Ambient air check NOTE Please note that the Ambient air check depends on the country selected. If the Ambient air check is not displayed, the ambient air check is not available in your country.
USER MANUAL OPTIMA BIOGAS 7.5. Temporary buffer The analyser offers you the possibility to store all momentary measured val- ues in a temporary buffer while the measurement is running and to continue the measurement. ► Later on, the values can be brought back from the temporary buffer to the measuring window in order to print them out or / and to save them.
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USER MANUAL OPTIMA BIOGAS ► Stop the Measurement. The measuring window is greyed out. ► Press F3. The measured values stored in the temporary memory are displayed. If you have stopped a measurement without first storing the measured values in the temporary buffer, you can store the measured values directly in the temporary buffer from the function key bar.
USER MANUAL OPTIMA BIOGAS Overwrite measured values in temporary buffer You can overwrite the measured values stored in the temporary buffer with the currently displayed measured values ► Press the menu key. A selection list appears. ► Select overwrite clipboard.
► Press F3. The currently measured values for Draft and T-gap are displayed. The MRU annular gap multi-hole probe No. 56352 is suitable for annular gap measurement. The silicone hose is attached to the condensate separator of the analyser.
USER MANUAL OPTIMA BIOGAS 7.7. Perform Test program The test program is used by test facilities to check the analyser by means of test gas in the measuring program. No calculations are performed during the test program. ► Select Gas Measurements.
USER MANUAL OPTIMA BIOGAS 7.10. Perform pressure measurement Pressure (4 values) is measured and saved to the selected measurement name. The actual measured value is displayed in the middle of the dis-play. The 4 measurement names can be changed as desired.
► Plug a temperature sensor into the T1 connection. ► Plug a temperature sensor into the T2 connection. NOTE The accuracy of the difference temperature measure-ment is guaranteed only on use of the MRU temperature sen- sors. ► Go to the Measurement menu. ► Select Diff. Temp. measurement.
USER MANUAL OPTIMA BIOGAS 7.12. Store measurement values If "store" is displayed in the function key bar, you can save measurement re- sults to the data memory using the related function key F2 or F3. The function of the data storage is displayed in chapter 8 Data storage, Page ►...
USER MANUAL OPTIMA BIOGAS Enter T-boiler, Soot and Derivative The analyser does not have a soot measurement. ► However, you can enter determined soot data to save or print them to- gether with the measurement data. NOTE Before you can enter the soot data, you have to activate the setting “Add soot &...
USER MANUAL OPTIMA BIOGAS 7.13. Print measurement values You have the possibility to print measurement results via the following op- tionally available printers. • Speed printer (IR desktop printer) • HSP 580 (Highspeed-Bluetooth-Thermoprinter) NOTE Before you can print measurement results, you must select and configure the appropriate printer (printer type) in the menu printout.
USER MANUAL OPTIMA BIOGAS Setting Description Printer type Selection of the printer type Print site lines Line 1 (plant number) is required. The other lines (free text lines) can be printed if required. Print analyser info Measurement printouts can be made shorter by omitting the analyser.
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USER MANUAL OPTIMA BIOGAS ► Press the printer key. Optionally, press the context menu key and select Printout (Pr.) A print-out is created. Further technical specifications as well as battery and paper rolls changes please see separate printer manual.
USER MANUAL OPTIMA BIOGAS Print measurement results with Highspeed-Bluetooth-Thermoprinter ► Go to the menu print-out. See also chapter Open menu print-out, Page 52. ► Select Bluetooth-HSP as Printer type. ► Press F2. The connection between analyser and the printer is established.
USER MANUAL OPTIMA BIOGAS 7.14. Stop measurement A running measurement can be stopped at any time by pressing the F1 key. The window changes colour and the measured values are frozen. All measured val- ues available at the time of stopping are available in the analyser and can still be displayed.
USER MANUAL OPTIMA BIOGAS Data storage 8.1. Organize data storage The basis for the data storage of the analyser is saved sets of sites inside the ana- lyser. Each site has a distinct site number as well as 8 additional free text lines for names and address.
USER MANUAL OPTIMA BIOGAS 8.3. Sites administration In the sub menu Sites administration, you can: • View all data of the stored sites • Create new sites • Change data on existing sites • Delete sites NOTE New sites created in the analyser will NOT be transferred to...
USER MANUAL OPTIMA BIOGAS View sites ► Go to the Storage menu. ► Select Sites administration. The menu Sites administration appears. Each stored site is displayed on a page with the colored site number and eight additional free text lines.
USER MANUAL OPTIMA BIOGAS Delete sites You can delete sites individually or delete all sites simultaneously Delete sites individually ► Go to the Storage menu. ► Select Sites administration. ► Press OK. The menu Sites administration appears. ► Select the site you want to delete.
USER MANUAL OPTIMA BIOGAS Delete all sites ► Go to the Storage menu. ► Select Delete all sites. ► Press OK. A message appears. ► Select continue to delete all sites. ► Select abort to retain all sites. ► Press OK.
USER MANUAL OPTIMA BIOGAS Import sites With this function you can import Sites which have been created on a com- puter or another Analyser. The File name must have the name “anlagen.csv“(anlagen = German for sites). The file has no column heading that means that the first line al-ready has user data.
USER MANUAL OPTIMA BIOGAS Export sites This function can be used for an analyser back up or if you wish to sup-ply the analyser information to a computer program or another ana-lyser. This is very handy if you have made some modifications inside the analyser...
USER MANUAL OPTIMA BIOGAS Export measurements With this function, the analyser can make its stored measurements available to a PC. Attention, this function is not suitable as a backup or for transferring the measurements to other measuring devices, as the measurements cannot be imported again.
USER MANUAL OPTIMA BIOGAS 8.5. Measurements in Data storage View measurements ► Go to the Storage menu. ► Select View measurements. The menu View measurements appears. An overview of the number of stored measurements depending on the measurement type appears.
USER MANUAL OPTIMA BIOGAS Delete measurements You can • Delete single measurements • Delete all measurements or delete all measurements of a measurement type Delete single measurements ► Go to the Storage menu. ► Select View measurements. ► Drücken Sie OK.
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USER MANUAL OPTIMA BIOGAS Delete all measurements ► Go to the Storage menu. ► Select Delete measurements. ► Press OK. The menu Delete measurements appears. ► Select which measurement type you want to delete. ► Press F2. A message appears.
The Service menu is protected by a PIN code against unauthorized access. For the PIN code, contact an MRU service center (www.mru.eu). If you have started the PIN code query by mistake, press the ESC key. You will return to the Extras menu.
USER MANUAL OPTIMA BIOGAS 9.2. Default settings The analyser is reset to the default settings. NOTE With the default settings, all individual settings are lost. ► Go to the Extras menu. ► Select Default settings. ► Press OK. A window appears.
In this menu you will see all ser- vice values of the sensors and also other parameters. In case of a defect contact the MRU service department. The MRU ser-vice technician will ask you about these values or he will ask you to send them by fax or email.
USER MANUAL OPTIMA BIOGAS NOTE For the PIN code, contact an MRU service center (www.mru.eu) ► Enter the Pin-Code. The selected function test is switched on or off. 9.4. Performing leak test During the leak test, the system (including the condensate separator) is checked for leaks by the analyser.
If the leak proof test is not passed, you must check the probe including the tubing and the condensate separator. If no leakage is detected on these external parts, the analyser has to be check service center (service centers at www.mru.eu). 9.5. Contents SD card ► Go to the Extras menu.
USER MANUAL OPTIMA BIOGAS 9.6. Device info ► Go to the Extras menu. ► Select Device info. ► Press OK. The menu Device info appears. Information about the analyser is displayed, for example serial num- ber and firmware version.
USER MANUAL OPTIMA BIOGAS ► If necessary. Press the menu key. A selection list appears. ► Select Send Mail … (QR). ► Press OK. ► The menu Type of QR-Code appears. ► Scan the QR-Code. ► You can send the Options list as E-mail Service history ►...
• Charge the battery approximately every 4 weeks, if the analyser was not used 10.2. Maintenance An annual inspection and, if necessary, calibration of the sensors by an MRU ser- vice centre is recommended. NOTE Please note that correct operation of the The measuring device can only be operated correctly if the sensors are adjusted/calibrated regularly.
USER MANUAL OPTIMA BIOGAS 11 Option Gas flow measurement This option enables the measurement of the flow velocity in flue pipes or flue gas stacks 11.1. Connect Prandtl (Pitot) tube to analyser MRU GmbH, D-74172 Neckarsulm 76 / 98...
USER MANUAL OPTIMA BIOGAS 11.2. Open menu Gas flow measurement ► Go to the Measurement menu. ► Select Gas flow measurement. ► Press OK. The menu Gas flow measurement appears. NOTE If you have not connected a temperature sensor, the fol-...
USER MANUAL OPTIMA BIOGAS 11.3. Define settings and parameters ► Press F1. The menu Settings appear. ► Setup the desired measurement units. ► Set the desired parameter. ► Select Gas composition (OK) to adjust the gas composition to your needs.
USER MANUAL OPTIMA BIOGAS 11.4. Enter Cross section area NOTE Before you can perform a flow measurement, you must se- lect the desired cross-section and enter the corresponding side length ► Press the arrow keys left/right in the menu Gas flow measurement.
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USER MANUAL OPTIMA BIOGAS Legend: P stat << P baro v = flow velocity [m/s] P baro = Barometric pressure [hPa] T = gas temperature P stat = Static pressure [Pa] P dyn. = Dynamic pressure [Pa] ► Press F2 as soon as the measurement for measuring point no. 1 is fin- ished.
USER MANUAL OPTIMA BIOGAS 12 Option: Monitoring flow rate The flow rate is continuously monitored. In the event of an error, the follow- ing message appears in the display: If the flow rate is too low, this message is displayed every 8 seconds.
USER MANUAL OPTIMA BIOGAS 13 Option: Auto-measurement With the automatic measurement option, the analyser can log continuous measurements independently. You can largely adapt the properties of the automatic measurement to your individual requirements. The data is stored in the internal data memory and can then be transferred to the SD card.
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USER MANUAL OPTIMA BIOGAS NOTE Setting Average values: Yes: Analyser calculates the mean during each interval and stores this value. No: Analyser stores the values being measured at the end of the interval. ► Press F1. The measurement starts.
USER MANUAL OPTIMA BIOGAS 14 Appendix 14.1. Technical data General Data Operating temperature +5°C ... +45 °C / 41 °F ... 113 °F Rel. Humidity, non-condensing Storage Temperature -20°C ... +50°C / -4°F ... 122°F Data storage 20000 (dynamic, up to [datasets])
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USER MANUAL OPTIMA BIOGAS Non-dispersive Infrared Measurement (NDIR) low range Nom. Measuring Range 100 .. 40000 ppm Resolution 10 ppm Accuracy abs./reading ±400 ppm/ 5% Response Time T90 < 35 s Temperature measurement T1, T2 Number of thermocouple type K input Measuring Range -40 °C ..
USER MANUAL OPTIMA BIOGAS Analysis and calculations Air ratio Measuring Range 1-20 Resolution 0,01 Excess Air Measuring Range 0 - 999 % Resolution Dew point Unit °C Measuring Range 0-100 °C Resolution Losses qA Measuring Range 0 - 99,9% Resolution...
USER MANUAL OPTIMA BIOGAS Measured values Unit Temp. Ambient air (Thermo- [°C] couple) Temp. Flue gas (Thermocouple) [°C] [ppm] Pressure [hPa] Available conversions of CO [ppm] related to. On 0% rest O (undiluted) [ppm] related to. On fuel type dependent O...
USER MANUAL OPTIMA BIOGAS 14.3. Troubleshooting Troubleshooting on the analyser Effect Error Cause Solution indication Analyser does Device does not react on any Press ESC and not respond to key. Power-ON buttons any key touch at the simultane- ously. Undercooling Display indica- e.g.
USER MANUAL OPTIMA BIOGAS Troubleshooting condensate separator 1. Effect 2. Cause 3. Solution Dirt and / or humidity in-side Fine filters are wet and / Check filters more the device or dirty. often No filter effects Renew them if nec-...
USER MANUAL OPTIMA BIOGAS 14.4. Update firmware Check current firmware version ► Go to the Extras menu. ► Select Device info. The menu Device info appears. The current firmware version appears. In this example, the firmware version is 3.00.02.
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USER MANUAL OPTIMA BIOGAS ► Select install firmware. ► Press OK. The update is performed. After the update has been performed, a message appears. ► Confirm the message with OK. ► Switch the analyser off again after the successful update.
USER MANUAL OPTIMA BIOGAS Check new firmware version ► Go to the Extras menu. ► Select Device info. ► Press OK. The menu Device info appears. The new Firmware version is displayed. ► Repeat the update process if the old firmware version is still displayed.
USER MANUAL OPTIMA BIOGAS 14.5. Display your own logo You have the option of importing your own start logo into the analyser and having it displayed when you switch the analyser on. Create your own logo ► Create your own logo.
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USER MANUAL OPTIMA BIOGAS ► Save your logo to an SD card with the file name logo4u.jpg. NOTE Pay attention to the file format jpg when saving/exporting. If you use a graphics program other than MS Paint, you must disable the following items before exporting.
USER MANUAL OPTIMA BIOGAS Import logo into analyser ► Go to the to the menu Settings. 5.2 Customize settings, Page 24. ► Insert the SD card with the logo4u.jpg file into the analyser. A message appears. The logo is saved.
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