TEM sampler manual
Contents
1. 6 info stats deposit J info stats stop Figure 5 main screen before and during TEM probe sampling During deposition the TEM sampler will display the percentage of the deposition time on its main screen If you do nothing it will sample until 9 16 www naneos ch the value reaches 100 then it will stop the deposition and instead of the percent display the sampler will display done You can also stop the deposition manually by pressing the right button below the text rstopa Extended operation information Different inlet options The partectorTEM comes with a standard inlet a 6mm tube fitting with a steel mesh You can use either this or you can add a cyclone in front of the tube inlet to remove coarse particles The internal pump cannot support high pressure drops so you should not use an impactor The partectorTEM is a miniature instrument with an extremely sensitive internal electrometer Fibers or dust particles which are larger than about 1mm in size can produce short circuits in the instrument Therefore the tube inlet has a steel mesh to prevent really coarse dust particles or small insects from entering the instrument If you do not use the inlet you risk aspirating coarse dust that may result in a deteriorated instrument performance We recommend the use of a cyclone if you are measuring in environments where a large number of coarse particles are present For example the SKC GS 3 cyclone would be2. A nanoparticle dosimeter for easy workplace exposure monitoring naneos a particle solutions gmbh C un m PartectorTEM miniature TEM sampler Operation Manual English CE amp Baik www naneos ch Document information naneos particle solutions gmbh 2014 Related device versions V2_3 Related firmware versions gt 374 Document Date 2014 09 19 Document Revision A 2 16 www naneos ch Used abbreviations TEM transmission electron microscope DC diffusion charging diffusion charger HV high voltage LED light emitting diode LDSA lung deposited surface area USD micro Secure Digital memory card Safety information General notes and warnings This operation manual must be read completely before using the partector TEM Incorrect use or handling and any consequences arising from this may damage the device or endanger personnel The manufacturer declines all liability resulting from incorrect use and handling Safety notes Never operate the instrument at condensing conditions Do not blow into the instrument Do not open the partector TEM as you may damage it Do not operate the partectorT EM with an open charger hatch Do not operate the partectorT EM without inserted TEM probe holder The partector EM is a sensitive instrument made for measuring nanoparticles Sampling too much coarse dust will eventually lead to deteriorating instrument performance Use a cyclone wh
3. e uSD card when the device is turned on It automatically generates a filename depending on start date time and device serial For more information about this read the rpartector data fileosection If you insert the uSD card while the device is running the data logging will not start automatically You need to turn the device on after inserting the card Do not remove the uSD card while the device is running The data file needs to be closed properly otherwise it will be corrupt Keypad functions amp symbols In the picture below you can see the partectorTEM display screens home screen EO home screen oO 16 2 13 14 46 c ALDSA 2E G info screen IS Hm cm 2 O Serial 18 Minutes 18562 info stats deposit stats stop LDSAmin 191365 Pulses 557337 calib 3 26 i _ BR Date 13 11 2013 exit I status I config statistics screen KON status screen O config screen Kol alarm low power off time 14 46 00 date 2013 02 16 exit next 1 up down Figure 4 partectorTEM menu screens 7 16 www naneos ch Home screen On the home screen you can see the LDSA concentration date and time and also the charge state of the battery If no key is pressed for more than one minute the display goes dark to prolong battery life By pressing any key the display turns on again The lightning symbol indicates that the high voltage in the charger is on and working properly The blinking red dot indicate
4. en measuring in environments where large number of microparticles might be present Do not operate the partectorTEM in an explosive atmosphere or in the presence of flammable gases or fumes Have your instrument recalibrated once a year 3 16 www naneos ch Instrument specifications Measured value LDSA Lung Deposited Surface Area Concentration range 0 20000 um cm Particle size range 10nmto10um displayed LDSA value is only accurate in the size range of 10 400 nm however the instrument can be used to measure micron sized particles too Accuracy 30 Noise floor 1 um cm in particle free air Sampling efficiency particle size dependent approximately 3 at 50nm Time resolution 4s standard faster as an option Inlet flow 0 5 l min Battery power 10h approximately Charging via USB Data storage uSD card PC Interface USB serial by virtual COM Port Dimensions 7 8X 13 4 x 2 9 cm Weight 440 g Checking the shipment contents When unpacking the device verify that you have received the following items If any of the components are missing or damaged contact naneos Type tem Tweezers for TEM grid probe handling EEE EEE nn 5 spare grid holders screwed into the grid holder transport plate a EEE Lo 4 16 www naneos ch Getting started Instrument description The partectorTEM is a portable battery powered miniature TEM sampler that allows to measure the lung deposited sur
5. face area LDSA of nanoparticles It can take samples on standard 3 05mm diameter TEM grids by electrostatic precipitation It automatically determinates the optimal probe sampling time and stops sampling when a sensible coverage of the grid is reached Measurement data and grid coverage is displayed on a graphical display and data will be stored on a uSD card A user defined LDSA start sampling level can be set Beside this the partectorTEM has all the functionality of the Mormalopartector that can be used as a portable aerosol dosimeter for personal exposure monitoring 142 mm partector 29 mm 78mm Figure 1 partectorTEM main parts 1 inlet 5 right soft key 9 USB Port 2 power button 6 middle soft key 10 charge LED 3 DC charger hatch 7 left soft key 11 TEM probe holder 4 display 8 uSD card slot 5 16 www naneos ch Measurement unit The particles are measured in terms of alveolar lung deposited surface area A LDSA a metric which according to latest results from toxicology studies is likely more health relevant than the traditionally measured particulate mass or particle number Its unit is described as um cm square micrometer per cubic centimeter For more information about the measurement unit and its relevance read http www naneos ch pdf LDSA pdf Aerosol inlet and outlet The aerosol inlet is located at the top of the instrument The internal pump provides an air flow of about 0 5 l min The standard ae
6. fere with a correct measurement If you experience frequent errors please contact us by email and send us a description of the error 13 16 www naneos ch message what you were doing when it occurred and if possible the data file of that measurement Maintenance Cleaning the corona wire of the charger Turn the device off before cleaning the corona wire During operation the corona wire is at high voltage and you will receive a harmless slight shock if you touch it Open the two screws marked in figure 7 with a philips screw driver Remove the charger hatch Check condition of sealing o ring Contact naneos for a replacement if it is brittle or has visible cracks Take an artist amp brush and carefully slide it along the thin HV wire Too much force can break the corona wire Figure 10 Charger hatch closed left and opened right Disposal The device contains a lithium battery and must be disposed of accordingly Under no circumstances should it be disposed of with domestic refuse nor crushed or burnt Naneos offers to take products back for correct disposal 14 16 www naneos ch Standards approvals and patents The partectorTEM is in conformity with the provisions of the following European Directives 2004 108 EC Electromagnetic compatibility EMC successor of 89 336 EEC with amendments 2011 65 EC Restriction of hazardous substances ROHS The technology of the partectorTEM is patent pendi
7. ible warning Low power mode you can choose whether the device should operate in low power mode or not In low power mode the display turns off automatically after a few minutes of inactivity to increase battery lifetime Pressing any button also the power button will turn on the display again The display will also turn on automatically if an error message is displayed Time and Date the internal clock of the partectorTEM has an accuracy of about 1s per day It does not change to daylight saving time and back automatically Therefore you may need to set the clock from time to time Press the mextosoft button until you are on the field you want to modify then use the fupoand fdown soft buttons to change the fieldG value Statistics screen The statistics screen allows you to view events detected in the past By pressing and I you can change the shown time axis from minute to hour and day TEM probe sampling Particles are charged electrically measured contactlessly by induction and finally deposited on the TEM grid by an electrostatic field Because the particle concentration is measured online the sampler automatically determines how long it must sample for an optimal coverage of the TEM grid 1 of the area covered with particles If when you find a hotspot where you want to take a TEM sample insert a fresh sample and press the right button below the text fdeposito eee Ci A LDSA A LDSA i 7 cm 3 9 1 6 um 7 cm 3 5
8. ng Related documents Partector data analysis tool quick start guide www naneos ch pdf javatool quick guide pdf In depth explanation of lung deposited surface are LDSA www naneos ch pdt LDSA pdf 15 16 www naneos ch Customer service amp contact naneos particle solutions gmbh Dorfstrasse 69 5210 Windisch Switzerland Mail info naneos ch Phone 41 56 560 20 70 www naneos ch 16 16
9. o know that an error occurred and therefore a red exclamation mark remains in the title bar as a reminder that an error occurred at some point 12 16 www naneos ch 16 02 13 14 46 E A LDSA um 2 cm 3 5 6 info stats Figure 9 home screen after recovery from an error condition The following table gives an overview over the possible error conditions and on what to do to remove them what to do SD card error no SD card inserted insert SD card rCard missing 0 SD card initialisation reboot device ile fopeno problem rmkdiro bad card format format SD card refs_inito Pulse low error too high relative try measurement with lower humidity humidity device contact naneos contamination Pulse high error diffusion current open charger hatch and does not reach clean corona wire as setpoint described in the next section If the message still appears contact naneos Buffer overflow software loop time report error to naneos You delayed can still measure with the device if it only appears infrequently RH error relative humidity is if possibly measure at very high and may lower RH use dryer hinder measurement EM zero offset high RH if possibly measure at high device lower RH use dryer contamination some of the error conditions are rather harmless e g high electrometer zero offset high RH error whereas especially the pulse errors will inter
10. ool from the naneos website to view the data or you open the data file with your favourite data analysis program Excel Origin Igor etc The data file is a simple tab delimited text file File names encode the recording time and device serial no For example if you start recording a file on 2 August at 12 35 with a device with the serial no 19 the file name will be stored in the folder 08 02 with the file name 019 1235 txt Parameters like relative humidity temperature battery voltage etc will only be recorded every 10 seconds The partector analysis tool allows you to quickly view graphs of all instrument parameters to average data in different intervals and to combine measured data with a GPS signal and plot it in Google Earth Read the separate quick guide on our website for more information Error messages Whenever an operation parameter of the partectorTEM is outside of its normal range a warning message appears on the partectorTEM screen The warning shows up in red on the home screen 16 02 13 14 46 A LDSA um cm 3 5 a 6 warning info stats show Figure 8 generic warning message on home screen There are different reasons for warnings to appear and a click on the rshowo soft button will display details on the warning Some error conditions may disappear again by themselves particularly such related to high humidity upon which the warning message will also disappear again However it can be important t
11. rosol inlet has a 6 mm barb for tubing connection and contains a coarse wire mesh to keep coarse dirt and small insects out of the instrument The air exits the device via the USB port and uSD card opening in the housing Note that the air is not filtered internally so do not connect the instrument to hazardous nanoparticle sources Supplying power To charge the partectorTEM or to operate it for periods longer than the battery lifetime connect the partectorTEM USB port to a PC or Laptop or to a USB Charger to charge the device While charging the blue charge LED on the front panel lights up When the partectorTEM is fully charged it turns off Insert remove uSD card To store data on the microSD card insert it in the partectorIEM as shown in the graph till it snaps in To remove the uSD card press on the inserted card which will force the release To insert the card in your SD card slot on a PC you need to insert the card first in the uSD SD card adapter or uSD USB adapter provided Figure 2a Inserting the 1SD Figure 2b Inserting the uSD card into the adapter card www naneos ch Turning the device on and off To turn the device on press the power button To turn it off press and hold the power button for two seconds and release it when the goodbye message appears Recording measurements on the uSD card lf a uSD card is inserted in the partectorTEM at startup the device automatically starts recording on th
12. s that data is being written on uSD Card If you want to take a TEM sample insert a fresh sample and press the right button below the text fdeposita The partectorTEM starts deposition and will display the percentage of the deposition time The exclamation mark indicates that an error occurred at some point during the current measurement Pressing the nnfoosoft button switches to the info screen Info screen The info screen displays device specific system information Serial serial number of the device Minutes total operating time in minutes LDSAmin LDSA value integrated over time Pulses number of high voltage charging pulses Calib calibration factor Date date of calibration Pressing the rstatuso soft button brings you to the status screen Pressing the ralarmosoft button brings you to the alarm screen Pressing the ftonfig soft button brings you to the config screen Status screen The status screen shows the most important device data RH T internal relative humidity and temperature C BATT battery voltage ADC electrometer signal HV charger corona voltage ldiff charger diffusion current 8 16 www naneos ch Config screen In the config screen you can change some settings of the partectorT EM Alarm level use the fupoand fdown soft key to change the alarm level to the desired value When the measurement value exceeds the alarm level the internal buzzer of the partectorTEM will produce an aud
13. useful for this purpose http www skcinc com prod 225 100 asp If you are certain that you have no coarse particles in your air which is normally the case in ambient air then you can also use the tube inlet 10 16 www naneos ch Handling the TEM grid Handling the small TEM grids is a bit tricky but with some practice it is not hard We suggest that you try loading and removing grids from the grid holder for a while until you feel comfortable with the procedure First unscrew the TEM probe holder and remove it from the device Open Figure 6 removing the TEM probe holder The grid holder has a brass cap that you can unscrew Once the cap is unscrewed you can place a TEM grid on the grid holder Try to place it more or less in the center it doesnd have to be perfectly centered Figure 7 placing a TEM grid Screw down the cap slowly towards the end while observing the TEM grid If it was reasonably centered it will now align perfectly with the hole as you screw the cap down as the cap matches the tapered end of the holder and thus automatically shifts the grid until it is nicely centered To remove the grid after sampling unscrew the cap and remove the grid with tweezers 11 16 www naneos ch The partector data file To view the measured and stored partectorTEM data remove the uSD and insert it in your PC as described in a previous section Now you either download the partector data analysis t
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