USER MANUAL OPTIMA7 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 .
NO - 3 years. The use of the analyzer for regulatory purposes is subject to special regula- tions (for example a periodical examination of the analyzer). Please obtain the appropriate regulations from your local responsible authority. 7 / 72 MRU GmbH, D-74172 Neckarsulm...
Page 8
This area classification is country specific, please observe and notice it. • MRU instruments may be operated in hazardous areas zone 2 by skilled users obeying local guidelines e.g. by using LEL gas detectors...
• Do not cut or squeeze the connecting cables of the rechargeable battery. • Do not connect the (+) contact to the (-) contact or metal. • Non-observance of the above guidelines can cause heat, fire and explo- sions 9 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 2 Introduction • This manual enables you to understand and safely operate this MRU Ana- lyzer. • Please read this manual with great vigilant and get familiar with the product before using it. • This analyzer may only be operated by competent personnel and for its intended use.
Page 11
The analyzer must be used according to instructions for the intended use. Our analyzers 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 OPTIMA7 Biogas 2.2. About us The analyzer 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 analyzers. MRU GmbH produces a wide range of instruments, from standard analyzers up to tailor made industrial analyzers.
Hazardous waste must be returned to MRU prepaid. 2.5. Return of electronic equipment MRU GmbH is required to accept the return, for proper disposal, of all analyz- ers delivered after 13th of August 2005. Analyzers must be returned to MRU prepaid.
USER MANUAL OPTIMA7 Biogas 3 Description 3.1. Gas flow diagram The analyzer 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 OPTIMA7 Biogas NOTE If during zeroing T air (5) is disconnected, then value of T gas at the end of zeroing will be used. In this case, the measuring value will be displayed green coloured. If T air (5) will be connected during the measurement, then...
3.4. Probes The Analyzer is available with different probes, both with exchangeable probe tubes. A complete list of available probes can be found in the current price list of this analyzer. 17 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 4 Operating 4.1. Display All information required to operate the analyzer is displayed as shown be- low. Position Description Menu bar Function key bar Display panel 1. Menu 2. Measurement value Zeroing active SD-Card in the slot 1.
Abort or return to the menu above Jump in between lines, change Arrow Keys values Confirmation key, select a marked menu point Activates the printer function in the Printer measurement and service window 19 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 4.3. Menu structure The analyzer organizes all available actions in three main menus: • Menu Measurement All available measurement options will be displayed and can be selected here. • Menu Storage All available storage options will be displayed and can be selected here.
„3 seconds OK key press is displayed Keyboard beeper ON / OFF Keyboard beeper activated or deactivated Logo switch ON ON / OFF Logo will be displayed 5.3. Setting measurement 21 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas ► Press F3. The Extras menu appears. ► Press F3. The menu Settings appears. ► Press F3. The menu Measurement settings appears. In the "Measurement settings" menu you can make for example the follow-...
The menu print-out appears. In the menu "print-out" menu you can make for example the following ad- justments: Printer type Select printer type MRU / HP Print logo ON/OFF Print logo Print option SHORT/LONG SHORT: Print-out without area for signature and site infor- mation Line 1 (Site no.) is necessary...
The menu Settings appears. ► Press F2. The menu Bluetooth appears. The following MRU software can be used: MRU4u (Bluetooth) Available in the Apple App Store and Google Play For iOS communication with PC, tablet or smartphone is additionally the Low power module # 66173 required SMARTdata (Bluetooth) (SMARTdata Version 1.2.0 or newer)
The following settings are possible: • Measurement windows: configuration of what and where will be dis- played in the 3 measurement value windows. • Zoom – window: select what will be displayed in the zoom - window 25 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas Setting CO limit value (only gas flue measurement) ► Select Gas measurements. ► Press OK. The menu Selection meas. program appears. ► Select the desired measuring program from which the CO limit value is to be set ►...
Now you select “Save measuring window”. All your changes will be saved and all saved values will be printed when using the printer function. Start the measuring program – once you are inside the measuring window press the menu key 27 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas Configuring zoom window Three zoom windows are available in each measuring program for the zoomed display of 2 measured values each. Which values are displayed in a zoomed view can be configured. ► Start a measuring program.
USER MANUAL OPTIMA 7 Biogas 6 Preparing measurement 6.1. Ensure power supply The analyzer can be used with: • with the internal MRU battery (provided) • with the MRU battery charger (provided) External equipment may only be connected while the analyzer is switched off! 6.2.Automatic Auto-off function...
USER MANUAL OPTIMA7 Biogas 6.5. Operating temperature If the analyzer 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 analyzer! If the temperature is out of its operation range you will see the following messages on the display: “Analyzer too hot”...
During zeroing, the -> 0.0 <- symbol flashes in the upper right corner of the display. After zeroing is complete, the analyzer is ready for measurement. If sensors are faulty, the error is identified during zeroing and an error message is displayed. 31 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 6.9. Repeating the zeroing The zeroing can be repeated at any time as long as the probe is not inside the stack. 32 / 72 MRU GmbH, D-74172 Neckarsulm...
► The exhaust outlet at the rear of the analyzer may never be covered during a measurement, never operate the an- alyzer in a transport case. ► Go to the Measurement menu. ► Select the desired measurement program. ► Press OK. 33 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 7.2. Performing Biogas measurement Measurement start / stop Menu key Store measurement Print display content Back to Measurement menu 7.3. Flue gas measurement (option) Measurement values can be organized on three pages, each page displaying 6 measurement values.
If in the function key bar "store" is indicated, you can store with the accompanying function key F2 or F3 the measurement in the data memory. The function of the data memory is explained in chapter 8Data Stor- age, Page 40. 35 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 7.6. Printing measurement values The measurement results can be printed out on the Speedprinter (IR table printer, art. no. 62693) with the printer key. ► You must align the Speedprinter as follows: values that can be seen in the measurement window on all three pages will be printed, dou- ble measurement values will only be printed once.
► Go to the Measurement menu. ► Select Last measured values. The measured value window with the last measured values appears. ► Press F1. The measurement is continued. 37 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 7.9. Pressure measurement (Option) Pressure (4 values) is measured and saved to the selected measurement name. The actual measured value is displayed in the middle of the display. The 4 measurement names can be changed as desired.
The menu Diff. Temp. Measurement appears. The temperatures T1, T2 and the difference are displayed. NOTE The accuracy of the difference temperature measurement is guaranteed only on use of the MRU temperature sensors. 39 / 72 MRU GmbH, D-74172 Neckarsulm...
The analyzer can store up to 4,000 different sites. New sites can be added in the analyzer. Modifications can be done using an external PC program e.g. MRU Win. NOTE New sites created in the analyzer will NOT be transferred back to the computer program.
• view all data of the stored sites • create new sites • change date of existing sites • delete sites NOTE New sites created in the analyzer will NOT be transferred to a PC program 41 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas Create new site ► Go to the Storage menu. ► Press F2. The menu Sites administration appears. ► Press F1. The menu Modify site appears. ► Press F1 to assign manually a site number to the site.
► Press OK. The menu Search a site appears. You can choose to filter by Site number, by content in Line 2 or for the rest of the other text lines. 43 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas ► Select a line in which you want to search for content. In this example, the search is performed in line 2. ► Press F3. A window appears. ► Enter the desired search term. In this example the search term is John Example.
Page 45
► Press OK. A message appears. ► Select continue to delete all sites. ► Select abort to retain all sites. ► Press OK. Depending on the selection, the site is deleted or retained 45 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 8.4. Data transfer using SD card The data exchange format is CSV. A character-separated values (CSV) file is a simple text format for a database table. Each record in the table is one line of the text file. Each field value of a record is separated from the next by a char- acter.
Page 47
However, the analyzer marks the files that have been im- ported successfully. If you try to import a file with the same analyzer that is already in the analyzer you will get a red infor- mation screen. 47 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas Exporting sites ► Go to the Storage menu. ► Select Sites onto SD card. ► Press OK The menu Sites onto SD card appears. ► Press F2. The sites are exported. This function can be used for an analyzer back up or if you wish to supply the analyzer information to a computer program or another analyzer.
The created file has the file name “DDMxxxxx.csv“, in which the xxxxx are continu- ing 5-digit numbers with leading zeros. The created file has a column header with the following information: Site number, Date/Time, as well as 4 saved pressure measurements. 49 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 8.5. Measurement in Data storage Viewing measurements ► Go to the Storage menu. ► Select View measurements. ► Press OK. The menu View measurements appears. An overview of the number of stored measurements according to the measurement type appears.
A message appears. Select continue to delete all measurements. Select abort to retain all measurements. ► Press OK. Depending on the selection, the measurement data are deleted or re- tained. 51 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas Transferring measurements to SD-Card (Option) he analyzer offers the possibility to export all stored measurements to a SD card. ► Go to the Storage menu ► Select Measurements to SD card. ► Press OK. ► Select the desired measurement type.
If you enter a wrong pin code you will be exited into the “Extra Menu” again. Please contact MRU GmbH if you need the Pin Code for your analyzer. Press the Enter key if you should have landed in this menu by accident and you will be exited into the “Extra Menu”...
USER MANUAL OPTIMA7 Biogas 9.2. Default settings The analyzer will be reset to original delivery settings. NOTE With the default setting, 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 service technician will ask you about these values or he will ask you to send them by fax or email.
USER MANUAL OPTIMA7 Biogas 9.4. Leak proof test With the leak proof test, the system is checked by the device (incl. the con- densate separator) on undensity. The internal gas pump generates in addi- tion a subpressure which is measured over the built-in draft sensor and is observed for a period of 10 seconds.
If no undensity is ascertained in these external parts the OPTIMA 7 Combustion Analyzer has to be checked in a service department (worldwide service departments see www.mru.eu) 9.5.Contents SD card ► Go to the menu Extras.
USER MANUAL OPTIMA7 Biogas 9.6. Contents Analyzer information Here you will find information about the analyzer and the installed options. ► Go to the Extras menu. ► Select Device info. The menu Device info appears. ► Press F2. The menu Options list appears.
• If not used for a longer period of time, charge the battery first. • Charge the battery approximately every 4 weeks. 10.1. Maintenance An annual inspection and, if necessary, calibration of the sensors by an MRU service centre (www.mru.eu) is recommended to maintain their value NOTE Please note that correct operation of the analyzer is only ensured if the sensors are adjusted regularly.
USER MANUAL OPTIMA7 Biogas 11 Appendix 11.1. Technical data General data English Values Operating temperature +5°C ... +45 °C / 41 °F ... 113 °F Rel. Humidity, non-condensing Storage Temperature -20°C ... +50°C / -4°F ... 122°F Internal Battery Pack,...
Page 61
10% (> 500 ppm) Response Time T90 < 40s Electrochemical Sensor on additional position (depending on configura- tion) Nom. Measuring Range 0 - 500 ppm Overload Range < 2000 ppm Resolution 1 ppm 61 / 72 MRU GmbH, D-74172 Neckarsulm...
Page 62
USER MANUAL OPTIMA7 Biogas ± 5 ppm / Accuracy abs./reading 5% (0 - 500 ppm) 10% (> 500 ppm) Response Time T90 < 40s Electrochemical Sensor on standard position (depending on configura- tion) Nom. Measuring Range 0 - 2000 ppm Overload Range <5000 ppm...
Eingabe Querschnittsfläche: Kreis / Rechteck / Quadrat / Form freie Eingabe Einheit cm, m, cm2, mm2, feet2, inch2 Größe 0...60m2 Messbereich 0,1l/s - 6000m3/s Auflösung 11.2. Analysis and calculations Calculated values Air ratio 63 / 72 MRU GmbH, D-74172 Neckarsulm...
Page 64
USER MANUAL OPTIMA7 Biogas 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 Efficiency Measuring Range...
Page 65
Available conversions of CO [ppm] related to. on 0% rest O (undiluted) [ppm] related to. on fuel type dependent O reference value [mg/m [mg/kWh] [mg/MJ] [mg/m ] on fuel type depend- ent O reference value 65 / 72 MRU GmbH, D-74172 Neckarsulm...
Page 66
USER MANUAL OPTIMA7 Biogas Continuously calculated val- Unit Air ratio Dew point [°C] CO/CO2 ratio 66 / 72 MRU GmbH, D-74172 Neckarsulm...
Abort the window, changes will NOT be saved 11.4. Asking user for decision The analyzer requires confirmation of the user decision for various functions Select a line Confirm the action Abort the window, changes will NOT be saved 67 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 11.5. Firmware update Install the new software version in the analyzer ► Go to the Extras menu. ► Select Device info. The menu Device info appears. In the first line the Firmware version appears, for example 1.33.00.
(Check that the SD card is correctly inserted and perform a reset by pressing the ESC and ON keys simultaneously). Where can I get help if the update was not successful? Please contact your responsible sales representative or via email: info@mru.de 69 / 72 MRU GmbH, D-74172 Neckarsulm...
USER MANUAL OPTIMA7 Biogas 11.6. Troubleshooting Troubleshooting the analyzer 1. Effect 2. Error indication 3. Cause 4. Solution Device cannot be LED behind the con- Device does not re- Press ESC and ON simul- switched off by densate separator is taneously! act on any key.
Need help?
Do you have a question about the OPTIMA7 biogas and is the answer not in the manual?
Questions and answers