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1. 54 vil Front Matter MicroVol 1100 User manual 1 6 List of Figures Figure 1 MicroVol 1100 Inlet nennen 7 Figure 2 MicroVol 1100 components layOUt cooonoccccnonoccccnonoccccnananccnnnnncncnnnnn cnc c nano nana 8 Figure External Trigger eene entere nnns nnns 11 Figure 4 Mains power nennen nemen nennen nnne ens 12 Figure 5 Battery pack connection sequence nassen naar nnn nn 13 Figure 6 MicroVol 1100 control panel cover 17 Figure 7 Mam screen PUMP eek ce lee nin ed tesi ue Dieu 21 Figure 8 Main Screen pump ur imer tbe oe e rd 21 Figure 9 Malrimeh s ceti teer aa blog cete nie cu ces ed ve Moe eve Do sehe 21 Figure 10 Status Cirio t e rd ae re an 23 Figure t1 Setup Menlo eatem eter e eee nda 24 Fig re 12 Filter Blocked ie te e eee be bee cte tet vele cede eden 25 Figure 13 Main screen pump Off nsns nennen nnns 25 Figure t4 Start Date Menlo etie metere eet le bed eain e tras 25 Figure 15 End Date etr acte tie e este ve ote exeo nde 25 Figure t6 Daily Menu escurrido llei 26 Figure 17 Weekly
2. 26 Figure 18 Wind Menu idee retener ien eoe dete 27 Figure 19 Trigger Setup Menu ssssssssssessesse senes nnns 27 Figure 20 Logger setup Menu nennen nennen ennemi en nni nnn nennen 29 Figure 21 Glock Men iicet tert en een ide mare 29 Figure 22 Manual einen nnn 30 Figure 23 Hidden vingi neun 45 Figure 24 Conditional sampling wind direction sensor setup 30 Figure 25 Properties 37 Figure 26 Outp t SCreeh rie tei tc ba eti ie ade npe ca te De RA LEN 38 Figure 27 MicroVol 1100 Underside cccccccsceeeseeceeeeeceeeeeeaeeeeeeeeceaeeeeaaeseeeeeseaeeesaeeseeeenaes 39 Figure 28 Replacing the pump nemen nnne 44 Figure 29 Dual stage filter holder sse nnns 51 Figure 30 Views of the PM nozzle adaptor pencil shows 51 Figure 31 5 Nozzle components and 52 viii MicroVol 1100 User manual 1 6 Introduction 1 Introduction 1 1 Description The MicroVol 1100 Particulate Sampler provides a flexible
3. eo aeneo Se Ue era nea 42 6 3 MAINTENANCE PROCEDURES ee ee eee enne nose tee sa asses e eese tesa sese eee tete tasa aad 42 6 3 1 CLEANING THE INLET COMPONENTS 42 6 3 2 IMPACTOR ASSEMBLY 43 6 3 3 PUMP MAINTENANCE ni airetan ha EE esee es s ease nia 44 L TROUBLESHOOTING eoo ores store sos ere oet 47 8 INSTRUCTIONS FOR ACCESSORIES AND OPTIONS eee eeee eene en eene 49 Sil BATTERY XU dE 49 8 2 CHARGING THE BATTERY PACK ee eee eee eee eee tonno ness e e tete snae aee e tete tesa aad 49 8 3 DISPOSING OF OLD BATTERIES eeeeee en eene eene tota se nes eee teta snae see e tete eese sese eee tete 49 8 4 BATTERY CHARGER WITH TIMER 100 250V MODEL 50 8 5 BATTERY CHARGER BASIC 240V MODEL eee ee eere eee enero oeste te eese ense eren nu 50 8 6 DUAL STAGE FILTER HOLDER OPTION 0 0000000000000000000000000 tonto toto 00000000 sn soo anon 51 8 7 2 5 NOZZLE ADAPTOR OPTION ecce ee ee eee tn nones ee te tata sese 51 APPENDIX A SPARE PARTS AND ACCESSORIES LIST 53 APPENDIX MICROVOL 1100 06
4. Suggested intervals for maintenance procedure may vary with sampling intensity and environmental conditions 6 3 Maintenance procedures 6 3 1 Cleaning the inlet components A regular routine should be devised to ensure that the sampler is functioning as it was designed to This includes cleaning all surfaces that are exposed to the sample Note The flow sensor can be damaged by moisture Make sure that all water has been removed before reassembling the components Always dry the components thoroughly with compressed air after cleaning The impactor assembly has a removable rain cap and stainless steel mesh insect screen which are easily removed for cleaning The inlet tube should be removed and cleaned if contamination has occurred Remove the tube from the sampler and clean and flush the tube with hot soapy water and a bottlebrush The filter holder should also be kept clean and thoroughly dried before installing a new filter Transport the filter holder in a plastic zip lock bag to prevent contamination 42 MicroVol 1100 User manual 1 6 Maintenance 6 3 2 Impactor assembly The impactor assembly should be cleaned and re greased at least every 10 sampling periods and sooner if dirt is visible Remove the impactor assembly from the filter holder Remove the rain cap Remove the connecting tube and impactor plate by pulling them apart If necessary the impactor plate and connecting tube may be pu
5. eee eee e ee ee ee eee en ouune 11 2 4 CONNECTING POWER 12 2 4 1 MAINS POWER ADAPTOR 12 24 2 CONNECTING POWER BATTERY PACK OPTION esee 12 2 5 TRANSPORTING STORAGE neos Vo paese ERO 13 2 6 FILTER PREPARATION AND HANDLING eeeeee ee eo oe ee tete eo ose eee esee see 13 2 6 1 PRE COLLECTION EQUILIBRATION 14 2 06 22 PIETER EX CHANGE e Irt en 14 2 6 3 EQUILIBRATION 15 2 6 4 WEIGHING nete 2 0 aa ttis atiis tree tdm ee 15 30 OPERA TION EE 17 3 1 HOW THE MICROVOL THINKS eee eere ee ee ento eee tn e eee In Pe eee Pn ee este ee eee nu 18 3 2 GENERAL OPERATIONAL INFORMATION eeee eee eo ee eese een een eese eee tn eese ea nu 17 3 2 1 MENU OPERATION ER este dedere ded 19 3 2 2 CHANGING MENU 20 3 3 MAINSCREEN feet PPS 21 3 4 MENUS AND SCREENS Vc eaa A ESA 22 3T STATUS SCREEN 23 3 42 SETUP MENU A oe e ote 24 34 39 MANUAL MENU teer rait p eec rec teet a recep id 30 3 44 HIDDENMENU toate rete er ERE Gee e PIS
6. e A TSP Total Suspended Particulate sample inlet ideally samples all suspended particulate matter However it should prevent unusually large particles and insects from being collected on the filter element MicroVol 1100 User manual 1 6 Introduction 1 4 2 Principle of operation of size selective inlets Figure 1 MicroVol 1100 Inlet Assembly The MicroVol 1100 inlet has been developed tested and calibrated by the Australian CSIRO Division of Atmospheric Research The size selective inlet is of the impaction type Ambient air enters the Inlet Assembly via a rain cap and Stainless Steel insect mesh screen that prevent contamination of the sample by precipitation and large debris The air is funnelled through an acceleration nozzle where it is directed towards a flat impaction plate that sharply diverts the airstream Particles larger than the size cut point tend to be heavier and hit the impaction plate where they are trapped Smaller particles remain airborne and continue into the sampler The size cut point is affected by airstream velocity flow rate acceleration nozzle diameter and particle density composition and shape Ambient air is drawn into the size selective inlet at a constant flow rate in order to maintain the size cut point To achieve this the MicroVol 1100 uses a volumetric flow rate controller The flow rate must be set to 3 0 l min to achieve the correct particle size cut point This flow rate is the same for
7. MicroVol 1100 User manual 1 6 Troubleshooting 7 Troubleshooting The sampler is fitted with a number of features to protect it from internal damage Some of these features will prevent the sampler from performing as would normally be expected Fuse A 2A fuse is soldered on the circuit board inside the MicroVol Check the fuse continuity with a multi meter Low Voltage Automatic Shut off Shuts down the pump automatically when supply voltage drops below 11V nominal This feature protects the battery from damage The MicroVol display and data collection continues to operate until the battery voltage drops to about 5V when the microprocessor powers off Battery pack fuse A 3 15A 20x5mm fuse is housed in a waterproof fuse holder on top of the optional battery pack Check the fuse continuity with a multi meter Status Menu Gives a description of the current status of various parameters The main screen also has a single line status description when the sampler pump is not running which gives an indication of why the pump is not running 47 MicroVol 1100 User manual 1 6 Accessories and Options 8 Accessories and Options 8 1 Battery Pack Caution e The battery pack contains sealed lead acid batteries which produce small quantities of flammable hydrogen gas e Do not short circuit the battery connections This option allows the sampler to operate in areas where mains power supply is not available The rechargeable
8. These inputs are averaged and stored in the unit and may be used as triggers for conditional sampling eg sampling when the wind direction is within a specified range The MicroVol also incorporates a time clock and programmable timer enabling multiple time based sampling programs to be configured 3 1 1 MicroVol Sampling Protocol The MicroVol uses a number of logical conditional parameters to decide when it should switch the sample pump on The pump will be energised when all conditional parameters are satisfied The conditional parameters can be summarised as follows Is the current date after the specified Start Date and Time Is the current date before the specified End Date and Time Is the current time within one of the programmed Daily sampling times Between any of the 6 programmable On Time Off Time periods Is the current Day Of Week a specified sampling day Is wind speed and direction sensor data within the programmed range Is the power supply voltage above the lower limit typically 11V If all of the conditional parameters are satisfied All YES values displayed in the Status Menu then the MicroVol sample pump will operate and a sample will be collected on the filter paper In order to make the MicroVol pump operate continuously it is possible to set the MicroVol with parameter values that ensure all conditions are satisfied for long periods of time The only except
9. A description of the problem or the reason you are returning the equipment eg sales return warranty return etc pce ES If you are required to return the equipment an accompanying document with 1 Your name number and Facsimile number 2 Your company name with return shipment 3 The model number or a description of each item 4 The serial number of each item if applicable A description of the problem reason you are returning the equipment lii Front Matter MicroVol 1100 User manual 1 6 Claims for Damaged Shipments and Shipping Discrepancies Damaged shipments 1 Inspect all instruments thoroughly on receipt Check materials in the container s against the enclosed packing list If the contents are damaged and or the instrument fails to operate properly notify the carrier and Ecotech immediately 2 The following documents are necessary to support claims Original freight bill and bill lading Original invoice or photocopy of original invoice Copy of packing list Photographs of damaged equipment and container You want to keep copy of these documents for your records also Refer to the instrument name model number serial number sales order number and your purchase order number on all claims Upon receipt of a claim we will advice you of the disposition of your equipment for repair or replacement Shipping Discrepancies Check all containers against the packing list immediately on receipt If a
10. IRR ET 45 3 5 NA O p Pera ee ap suc seep EE Cua Up Ur CR EU ERR 30 vi MicroVol 1100 User manual 1 6 Front Matter 3 6 RAIN GAUGE A A 31 4 sCALTBRA DION ecu iia osa sehen 33 4 1 TEMPERATURE SENSOR CALIBRATION eeee eese noon eee teen ases esee eee tese sn assess eese sane 33 4 2 BAROMETRIC PRESSURE SENSOR CALIBRATION eeee seen sone ne eee eee tn e tese tesa aan 33 43 FLOW RATE CALIBRATION e eese eene eae Ua en oo Re een ns 33 4 4 PROCEDURE FOR RE CALIBRATING THE MICROVOL 1100 34 5 COLLECTING DATA ors eo os ese eoi eese or o ero ee ee 36 5 1 USING MICROVOL DOWNLOADER SOFTWARE eeeeeeeeeeoen case se eee tete enn sese e tese 36 5 2 COMMUNICATING WITH THE MICROVOL ALTERNATIVE METHOD ee eeen enne 39 5 32 ss CAT CULATIONS E ope eb eere spese eese io ve eet Re vu epe 40 5 3 L VOLUME ns sin iteratis m tati 41 5 3 2 MASS CONCENTRATION CALCULATION ccccccssessssccecccececssssnacceeececesssseaccceceeeeesentnacens 41 6 MAINTENANCE Stes esotere tabire SC outeu bots eessen 42 6 1 MAINTENANCE TOOLS to eee suo en Su ie tb o eee osts Nn In DE Go eue o eU Nie DE LUN eeu e Uva e eid 42 6 2 MAINTENANCE SCHEDULE co eee eee eoe ee co aUe SE oe
11. To enter the menu system press Select or Enter Status To Status Screen Setup m To Setup Menu Manual gt To Manual Menu S W version Displays software version information Figure 9 Main menu 21 Operation MicroVol 1100 User manual 1 6 The MicroVol 1100 uses a menu system to organise the operating parameters and settings The layout of the menu system is straightforward and easy to learn MAIN MENU FLOW TOT VOL TEMP PRESS WIND SP WIND DIR RH COR VOLUME RUN TIME PWR SUPPLY M S RATIO DAY OF WEEK TIME OK START DT OK END DT OK DAYOWEEK OK WIND OK POWER OK TIMES LOGGER SETUP CLOCK CCW W DIR FLOW CW W DIR REF TEMP LO W SPEED REF BP HI W SPEED SIZE SELECT PROTECTION AV PERIOD CLEAR ACCUM DATE IME Figure 10 Menu structure summary 22 MicroVol 1100 User manual 1 6 Operation 3 3 1 Status Screen The Status Screen displays current MicroVol status information The data can not be changed from this screen Sample volume and Corrected sample volume data is updated every minute all other data updates instantly Corrected sample volume is used to calculate particulate concentration and has been corrected to standard Reference conditions Note All YES NO conditions must be met before sampling takes place in Automatic sampling mode Flow l min Tot Vol Temp C Press mmHg Wind Sp m s Wind Dir deg Displays current volumetric flow rate Displays sample volume Dis
12. and 5 measurements The standard inlet consists of a nozzle body impactor plate rain cap and connecting tube with o ring seals The nozzle body incorporates a filter holder shroud and insect screen An optional nozzle insert is available for PM Introduction MicroVol 1100 User manual 1 6 measurements The impactor plate can be removed to closely approximate TSP sampling pun IMPACTOR ASSEMBLY mm FILTER HOLDER PUSH IN FITTING INLET TUBE MOVABLE COVEF PUSH IN FITTING gt 1 BATTERY PACK CLIP pT 1 FLEXI TUBE X IN A 7 X Figure 2 MicroVol 1100 components layout Note All parts especially the impactor assembly filter holder and inlet tube must be clean and completely dry before assembly MicroVol 1100 User manual 1 6 Introduction Note The impactor must be greased prior to use see Section 6 3 2 for details 1 5 1 Inlet tube The inlet tube is removed during transportation Remove the seal caps from the inlet tube Put the seal caps in a safe place for future transport Check that the insides of the inlet components aluminium inlet tube filter holder and impactor assembly are free of packing foam Make sure the tube is clean and dry internally before fitting it to the sampler Insert one end of the tube into the ora
13. mmHg Size Select Sets SSI flow rate limits active Protection Set protection mode YES NO Figure 12 Setup Menu Notes Flow Flow rate should be set at 3 0 l min when using size selective inlets The size selective inlet particle cut point will be most accurate when the flow rate is set 3 0 l min Do not set the flow rate below 1 0 or above 4 5 l min Ref Temp and Ref BP Ensure these are set to Standard Temperature and Pressure Conditions varies between different countries Size Select function This function determines what happens when the filter blocks up and the flow rate can no longer be maintained at the set value Setting this parameter to YES activates low flow rate limits As the filter loading increases the MicroVol will use active volumetric control to stabilise flow and continue sampling In extreme cases where the flow rate drops below the set flow rate for more than about 45 seconds the FILTER BLOCKED screen is displayed and the motor stops This feature means that the sample need not be discarded if a blocked filter causes the flow rate to drop below the required value for the Size Selective Inlet The RunTime Total Volume and Corrected Volume will stop accumulating at this point If Size selection is not required it can be de activated by setting Size Select parameter to NO For example TSP sampling can usually tolerate some decrease in the flow rate without invalidating the sample If
14. Before re connecting the filter holders wrap Teflon thread sealer tape around the threads in a clockwise direction 2 turns is sufficient Figure 30 Dual stage filter holder Figure 31 Views of the 5 nozzle adaptor pencil shows scale The PM nozzle adaptor is designed for sampling fine inhalable particulate matter with an aerodynamic diameter of 2 5 microns and smaller The PM 5 nozzle adaptor fits inside the impactor assembly effectively reducing the nozzle diameter An O ring seals and retains the PM 5 nozzle adaptor The 5 nozzle adaptor is precision machined to obtain the correct particle size cut point Extra care should be taken when handling the adaptor in order to prevent damage Accessories and Options MicroVol 1100 User manual 1 6 To install or remove the adaptor first separate the 47mm filter holder and impactor assembly from the inlet tube Disassemble the impactor assembly Refer to Figure 1 Section 1 4 2 for details of how the parts a re assembled With the filter holder connecting tube and impactor plate removed carefully insert or remove the 5 nozzle adaptor in the nozzle body The nozzle body with the PM nozzle adaptor installed Figure 32 PM Nozzle components and assembly Carefully reassemble the impactor assembly by inserting the greased impactor plate greased side towards nozzle connecting tube and filter holder with filter element installed Finally re attach the
15. Y En Renate E PEDE oe Poo Ee sees 3 1 2 3 OPERATING eneeeeennetn renes etene inet ne esse ese easet nnn eis 3 1 2 4 CONSTRUCTION AND 1 1 stie tete sete enne nis 3 1 2 3 POWER deitas iru ue 4 1 2 6 ACCESSORIES unn TTE CE ere 4 1 2 7 SBATIERYPACK OPTION reete 4 13 NOMENCLATURE eines de ee 5 1 4 BACKGROUND THEORY wisccssesscssscessecesesssccscseccicossecteseseccsieesescousesseccseesesc esesesssecesusconsessese 6 1 4 1 PARTICULATE SAMPLING senis 6 1 4 2 PRINCIPLE OF OPERATION OF SIZE SELECTIVE INLETS 7 1 5 INSTRUMENT DESCRIPTION i e oe ee eee sooo suene terea e sees 8 LESS A 9 1 5 2 FILTER HOLDER IMPACTOR ASSEMBLY eee 9 2 INSTALLATION Gre senno 10 2 1 CONNECTING EQUIPMENT TO THE WIND SPEED AND DIRECTION INPUT PLUG 10 2 1 1 CONNECTING WIND SENSOR OR ecce eene nnn ersten nennen nis 10 2 1 2 CONNECTING AN EXTERNAL TRIGGER FOR REMOTE ACTIVATION 11 2 2 INSTALLING THE MICROVOL 1100 FOR INDOOR SAMPLING cscssssssssrsccsssssssscesers 11 2 3 INSTALLING THE MICROVOL 1100 FOR OUTSIDE SAMPLING
16. amp ecotech environmental moni itoring solutions MicroVol 1100 Low Flow rate Air Sampler User Manual Version 1 6 www ecotech com MicroVol 1100 User manual 1 6 Front Matter Manufacturers statement Thank you for selecting the MicroVol 1100 Low flow rate Air Sampler The MicroVol 1100 is designed primarily as a stand alone portable particulate sampler and should give many years of trouble free service if installed used and maintained correctly By following the guidelines contained in this manual and with the implementation of a good quality assurance program the user can obtain accurate and reliable particulate concentration data Please ensure that you read the safety and warranty details as they contain important information for the user If after reading this manual you have any questions or you are still unsure or unclear on any part of the NUT 1000 then please do not hesitate to contact Ecotech Ecotech also welcomes any improvements that you feel would make this a more useable and helpful product then please send your suggestions to us here at Ecotech Please help the environment and recycle the AN pages of this manual when finished using it Notice The information contained in this manual is subject to change without notice Ecotech reserves the right to make changes to equipment construction design specifications and or procedures without notice Copyright 2007 All rights reserved Reproduction
17. assembly to the inlet tube 52 MicroVol 1100 User manual 1 6 Appendix Appendix A Spare Parts and Accessories List Parts Part Number Standard 47mm Filter Holder open face P ECO MICRO10004 S Includes coupling and push in fitting Second stage 47mm Filter Holder P ECO MICRO10005 S Two threaded ports Includes female threaded coupling Replacement Pump P ECO MICRO10006 S Replacement Flow sensor P ECO MICRO10007 S 50x 47mm Filters 2 0um P ZRU 10 002322 0050 Battery pack P ECO MICRO11001 O Battery charger 240V P ECO MICRO10002 O Battery charger with timer 100 250V 11003 Solar panel 30W and accessories P ECO MICRO10003 0 Long inlet tube P ECO MICRO10007 O Outdoor mounting bracket kit P ECO MICRO10008 O to PM Nozzle Adaptor P ECO MICRO100025 O Flow rate checking kit P ECO MICRO11010 O Wind speed amp direction sensor and mounting arm Cable to suit wind sensor specify length Tipping bucket rain gauge and bracket Cable to suit rain gauge specify length Trigger input cable specify length 53 MicroVol 1100 User manual 1 6 Appendix Appendix B MicroVol 1100 Log book 51 10119 1 w oum oyep Joquinu qI son PAVO son 930 w ILI MOJA soj
18. coeff0 by this value If the MicroVol is reading high decrease the value of the coefficient 0 and vice versa Do not adjust coefficient 1 Pres coeff1 4 Re check the MicroVol barometric pressure reading 4 3 Flow Rate Calibration The MicroVol 1100 flow controller is factory calibrated Care should be taken to keep moisture out of the inlet tube and the sampler should always be operated with a filter installed If this is done the MicroVol should maintain its calibration accuracy for extended periods several years The flow rate may be periodically checked using a bubble flow meter Do not use a piston type flow meter as the piston inertia affects the flow rate and flow control system An optional Flow rate Checking kit is available for this purpose 33 Calibration MicroVol 1100 User manual 1 6 Take care when using the bubble flow meter so that no liquid gets into the MicroVol Place the MicroVol and flow meter on the same level eg on a bench and connect the flow meter to the top of the inlet pipe using flexible tubing and push in fittings If the flow meter and MicroVol report different flow rate readings first check that there are no leaks in the connecting tubes 4 4 Procedure for re calibrating the MicroVol 1100 1 Set the MicroVol flow rate to a particular value and record this value 2 Measure the actual flow rate using a bubble flow meter 3 Repeat steps 1 and 2 with a different flow rate Flow rates of 2 0 litres
19. counter to count up to the OFF Delay value A parameter called ReTrigger controls how the MicroVol deals with repeated trigger signals during the active sampling period If the ReTrigger parameter is set to YES then each time the MicroVol clock reaches 00 seconds the Trigger Time counter resets to zero if the trigger condition is met ie The trigger operates from the end of the last valid trigger signal If the ReTrigger parameter is set to NO then the OFF Delay operates from the start of the trigger signal The Trigger Time counter will reset only if the trigger goes off for a 00 crossing MicroVol clock reads hh mm 00 and then retriggers at a later 00 crossing This means that if the initial trigger is still active at the end of the OFF Delay period then the MicroVol will stop sampling until the trigger goes off and then on MicroVol 1100 User manual 1 6 Operation 3 3 2 4 Logger Setup Menu AvPeriod min 60 Set data averaging storage period Clear Accum 2 Clears all stored data after confirming Figure 21 Logger setup Menu Note After changing the Logger Setup Menu Averaging period disconnect the power from the base of the MicroVol and then re connect it This will initialise the MicroVol using the new averaging period settings 3 3 2 5 Clock Menu The Clock Menu sets the MicroVol clock Note that times should be entered in 24 hour format Date 20 09 2000 Set current date Time 17 34 00 Set current time Figure
20. manual 1 6 Calibration 4 Calibration Check the calibration at least every six months or when the flow rate barometric pressure or temperature data is suspect Perform the calibration indoors out of direct sunlight especially when calibrating the temperature sensor Refer to the calibration sheet for factory calibrated values these are different to the default values To change any of the calibration coefficients it will be necessary to access the Hidden Menu Refer to the Hidden Menu section for further information regarding the calibration coefficients 4 1 Temperature Sensor Calibration 1 Record the temperature displayed by the MicroVol 2 Record the actual temperature with a certified precision thermometer If these measurements are significantly different continue with the calibration as follows 3 Calculate 4 Then Assign the value of Temp coeff 1 Temp coeff 1 x Temp coeff 0 Do not change 5 Repeat steps 1 4 if necessary until the MicroVol temperature is close to the actual temperature 4 2 Barometric Pressure Sensor Calibration 1 Record the barometric pressure displayed by the MicroVol 2 Record the actual barometric pressure with a certified pressure gauge or barometer If these measurements are significantly different continue with the calibration as follows 3 Calculate the difference between the two values and adjust the barometric pressure coefficient 0 Pres
21. min and 3 0 litres min are recommended Record the results in a table see below If the MicroVol and actual values are significantly different continue with the calibration The names in the table are those that will be used in the calculations that follow MicroVol flow rate Actual flow rate l min l min measured with bubble meter SETFLOW1 eg 2 0 MEASUREFLOW1 SETFLOW2 eg 3 0 MEASUREFLOW2 4 Calculate to four decimal places _ MEASUREFLOW1 MEASUREFLOW2 i SETFLOW1 SETFLOW2 A and MEASUREFLOW1 Ax SETFLOW1 a Then Assign the value of Flow coeff Onew Flow coeff O existing X A Flow coeff Inew Flow coeff 1 existing X Enter the new values for flow coefficients 0 amp 1 at the hidden menu refer to Hidden Menu section 34 Downloading Data MicroVol 1100 User manual 1 6 5 Downloading data The serial port is a 9 way female D connector on the underside of the MicroVol housing weatherproof cover is fitted to the connector to exclude dirt and moisture This cover should be removed only when a cable is connected to the port The serial port operates at 9600 baud eight data bits one stop bit no parity This cannot be changed Data can be downloaded using the Windows based Ecotech MicroVol Downloader program supplied on the Utilities CD or with the Ecotech WinCollect program Note If using WinCollect the MicroVol uses the same
22. polarity of the pump wires is not important The pump part number is listed in the Spare Parts section Figure 28 Replacing the pump 44 MicroVol 1100 User manual 1 6 Maintenance 6 3 4 Hidden Menu The Hidden Menu is used to set parameters at the factory It is not usually necessary to access the Hidden Menu To access the Hidden Menu hold down the secret key the first letter C in the ECOTECH logo then press the Select key at the same time Voltages Diagnostics only ID Enter a MicroVol identification number Motor Freq Optimised at the factory do not adjust Date Format 0 mm dd yyyy USA 1 dd mm yyyy common 2 yyyy mm dd Japan dd day mm month year Flow coeff0 Flow calibration coefficient 0 Flow coeff1 Flow calibration coefficient 1 Temp coeff0 Temperature calibration coefficient 0 Temp coeff1 Temperature calibration coefficient 1 Pres coeff0 Baro pressure calibration coefficient 0 Pres coeff1 Baro pressure calibration coefficient 1 WS coeff0 Wind speed calibration coefficient 0 WS coeff1 Wind speed calibration coefficient 1 WD coeff0 Wind direction calibration coefficient 0 WD coeff1 Wind direction calibration coefficient 1 Min 12V Power up voltage Default Prms Resets all hidden menu parameters 0 RG 1 WS Rain gauge or Wind sensor selection Inst Type Factory setting do not adjust Figure 29 Hidden Menu Power down voltage is 9096 of power up voltage value 45
23. shortage or other discrepancy is found notify the carrier and Ecotech immediately We will not be responsible for shortages against the packing list unless they are reported promptly iv MicroVol 1100 User manual 1 6 Manual Revision History Ecotech Manual ID Manual PN Current Revision Date released Description MAN 0040 ECO MIC1100MAN 1 6 May 2007 User Manual for the MicroVol 1100 Front Matter This manual is a newly created document for use of the MicroVol 1100 low flow rate air sampler Edition Date Summary Affected Pages 1 0 November Release 2000 1 1 December Menu structure flow chart added 28 2000 l la June 2001 Battery charger part number 53 changed 1 2 April Wind Direction Sensor drawing 38 35 2003 added Protection mode notes added 28 33 Flow rate notes added 7 9 13 Minor details 32 34 35 1 3 November V1 13 software changes 2 4 2 2003 trigger input 4 5 4 3 Size Select function 4 5 4 1 4 February Updated Downloader 46 49 2006 information and USB RS232 adapter information 1 5 June 2006 General updates various 1 6 January New company details added All 2007 Manual redesigned Front Matter MicroVol 1100 User manual 1 6 Table of Contents INTRODUCTION ii eoe eoo eor urn 1 EL DESCRIPTION pec PER 1 1 2 SPECIFICATIONS 3 1 2 1 PEON CONTRO A in te te ee eee Du eee den 3 LZS INEET ASSEMBLE
24. siting air samplers 2 3 Installing the MicroVol 1100 for outside sampling Attach the MicroVol main tubular housing securely to a post preferably elevated so that rain can not splash up underneath the sampler An outdoor mounting bracket kit is available The rechargeable battery pack option is recommended for use outdoors Note The standard mains power adaptor and the mains powered battery charger are not weatherproof and are not suitable for use outdoors Although the MicroVol 1100 is housed in a weatherproof enclosure it should be protected from moisture as much as possible Water must not be allowed to enter the inlet filter holder or inlet tube Inlet components must be dried before removing them ie when changing filters Do not change the filter in wet conditions or if there is 11 Installation MicroVol 1100 User manual 1 6 moisture visible on the inlet components Always cover the inlet tube when the impactor assembly and filter holder are removed outdoors The sampler should be located in a position that will allow it to collect a sample representative of the area of interest without being influenced by any non typical factors For outdoor use keep the sampler away from obstacles such as trees exhaust and inlet ducts edges of buildings etc Consult the relevant local standards for further information on siting air samplers 2 4 Connecting power 2 4 1 Mains power adaptor Figure 4 Mains power adaptor Attac
25. this parameter is set to NO the Filter Blocked screen will not appear until the flow rate drops to half of the set flow rate FILTER BLOCKED Replace filter ress Exit or PageUp to resume normal operation after replacing the filter before Restart MicroVol 1100 User manual 1 6 Figure 13 Filter Blocked 3 3 2 1 Times Menu Operation The Times Menu contains programmable timer settings Note that times should be entered in 24 hour format Days Cycle is normally set to 1 Start Date To Start Date Menu End Date To End Date Menu Daily To Daily Menu Weekly To Weekly Menu For regular sequence set this parameter to 1 To set a timed sequence of a different number of days see below Days Cycle Figure 14 Main screen pump off It is possible to program a timer sequence that repeats after a fixed number of days An example is to program a 6 day sequence for EPA sampling by setting the Days Cycle parameter to 6 In this way it is possible to program the MicroVol 1100 to collect a sample on Friday then the following Thursday then the following Wednesday etc which commences at the programmed Start Date and will continue until the End Date is reached AII conditions must be met for the sampling to commence so make sure that the Start Date End Date Daily and Weekly parameters have the parameters set correctly It is possible to program a six day sequence which never samples on Sundays for example by setting the Sunday p
26. 1 standard atmosphere 40 MicroVol 1100 User manual 1 6 Calibration 5 3 1 Sample Volume The sample volume is automatically calculated and stored updated in the MicroVol The sample volume is also automatically corrected to STP conditions and stored updated in the MicroVol 5 3 2 Mass concentration calculation Mass concentration MC is calculated using the formula W W MC V where W Final mass of filter element W Initial mass of filter element V Sample volume either corrected or uncorrected If the corrected sample volume is used the units for the concentration are standard ug m referenced to standard temperature and pressure conditions STP If the uncorrected sample volume is used the units for the concentration are ug m 41 Maintenance MicroVol 1100 User manual 1 6 6 Maintenance 6 1 Maintenance tools To perform general maintenance on the MicroVol 1100 the user will be required to carry the following equipment Phillips screwdriver to suit M4 and M3 screws Sside cutters or other cutting tool for cable ties Spare cable ties for securing tubes Flat terminal screwdriver for removing cables from connectors Small shifting spanner or pliers for holding hex fittings on flow sensor 6 2 Maintenance schedule Interval Item Procedure Page samples Weekly Inlet components Clean 42 Weekly Impactor Assembly 43 If necessary Pump Maintenance 44
27. 22 Clock Menu Note After changing the Clock Menu Time and Date parameters disconnect the power from the base of the MicroVol and then re connect it This will initialise the MicroVol using the new clock settings 29 Operation MicroVol 1100 User manual 1 6 3 3 3 Manual Menu Manual mode is useful for checking the flow rate and verifying pump operation The Manual Menu allows the MicroVol to be switched on or off independent of other conditions such as programmable timer settings wind speed and direction parameters It is not intended for long term sampling as it returns to Automatic mode after the time out period The time out reverts to Automatic mode after a preset number of minutes which can be set between 1 and 227 minutes Manual Mode Set YES for Manual mode operation Motor On Once in Manual mode set YES to turn pump motor on or NO to turn it off Timeout Timeout period in minutes reverts to Automatic mode after this time Figure 23 Manual Mode 3 4 Wind Sensor The wind sensor may be used for conditional sampling The data logger automatically collects wind speed and direction data at programmable averaging periods Note Wind direction data should be ignored if the wind sensor is not installed The wind sensor must be aligned to true north This is usually done using a hand held compass and adjusting for the magnetic declination from true north Align the mark on the wind sensor to the specified direc
28. Single filter holder 100 240V AC to 12 VDC power pack Optional Double filter holders Battery pack for 24 hour sampling Solar Panel amp regulator PM Inlet Adaptors 1 2 7 Battery Pack option Nominal Voltage 12VDC Nominal capacity Operation capacity Fuse Charge retention shelf life at 20 C 1 month 3 months 6 months 12Ah at 20hr discharge rate of 600mA At least 24 hours up to 48 hours depending on filter loading filter material and flow rate using a fully charged battery 3 15A M205 type 20x5mm 97 91 85 MicroVol 1100 User manual 1 6 Introduction Life expectancy vs depth of discharge d o d 100 d o d 250 cycles approx 50 d o d 550 cycles approx 30 d o d 1500 cycles approx Battery charger type 12V sealed lead acid battery charger Charging voltage 14 4 15 0 VDC Max charge current 2 5 Charger connection Waterproof connector with cover dotted pin Features Clips to underside of MicroVol Weather proof construction Dimensions 185mm height x 170mm diameter 1 3 Nomenclature SSI Size Selective Inlet used to sample particulates of a given Equivalent Aerodynamic Diameter PM o 5 TSP The TSP Total Suspended Particulate includes all suspended particulate matter The includes all particulates of an Equivalent Aerodynamic Diameter EAD of 10 microns or less 5 The 5 includes all particulates of an Equivalent Aerodynam
29. arameter to NO in the Weekly Menu Important Note For an n Days Cycle sequence where n is 2 or more it is important to set the Start Date later than today s date An internal counter is reset to zero when the Start Date is reached 3 3 2 1 1 Start Date Menu 20 09 2000 Set the start date for the timer program 11 34 00 Set the start time for the timer program Figure 15 Start Date Menu 3 3 2 1 2 End Date Menu Set the end date for the timer program Set the end time for the timer program Must be later than the Start Date time 27 09 2000 11 34 00 Figure 16 End Date Menu 3 3 2 1 3 Daily Menu 25 Operation MicroVol 1100 User manual 1 6 Up to six on and off periods can be programmed into the timer If the current time is within any of the six programmed periods then the Time condition will be satisfied Note that times should be entered in 24 hour format On Time 1 Off Time 1 Example shows 9am to 5pm program On Time 2 Off te 2 Set On and off times the same for On ime all unused time periods Off Time 3 On Time 4 Off Time 4 On Time 5 Off Time 5 On Time 6 Off Time 6 Figure 17 Daily Menu 3 3 2 1 4 Weekly Menu Sunday Set the sampling days Monday Tuesday Wednesday Example shows Monday to Friday program with no sampling on Saturday or Sunday Thursday Friday Saturday Figure 18 Weekly Menu 3 3 2 2 Wind Menu 26 Note It is necessary to disable the Trigger fun
30. ation 2 1 2 Connecting an External Trigger for remote activation Refer to section 3 3 2 3 for details on how to setup the Trigger menu for remote activation The external trigger voltage must be between 0 and 5v If using a contact closure to trigger the MicroVol then the signal must be pulled up to 5v with a 4 7kOhm resistor 5V Pullup ground and Trigger input are available on the external trigger cable Ensure the Trigger Signal to Trigger Ground voltage does not exceed 5V To prevent damage to the MicroVol opto isolated or relay contacts are recommended to connect the triggering device to the MicroVol Refer to the cable diagram for further details Figure 3 External Trigger Output 2 2 Installing the MicroVol 1100 for indoor sampling Attach the MicroVol 1100 to a power outlet that will not be needed for other purposes so that the power supply to the Micro Vol 1100 will not be disturbed The sampler should be located in a position that will allow it to collect a sample representative of the area of interest without being influenced by any non typical factors The MicroVol 1100 may be placed on a table away from any source of particulate accumulation such as a wall corner of room or near an exhaust or inlet It may be advisable to remove or switch the MicroVol off while vacuum cleaning is taking place as unusually high dust levels will be present Consult the relevant local standards for further information on
31. battery pack will operate the MicroVol for 24 hours before recharging is required For details on attaching the battery pack to the MicroVol 1100 see Section 2 4 2 Assembling the MicroVol 1100 Note Always fully charge the battery pack after use If the battery pack is not being used for an extended period of time remove the fuse and re charge the battery periodically every 2 months recommended The MicroVol turns the pump off automatically if the power supply battery voltage drops below 11V factory setting The MicroVol continues to operate until the battery discharges to about 5V after a period of several days Ideally the battery should be recharged well before this as the battery may be damaged 8 1 1 Charging the battery pack The battery pack must be charged in a ventilated area Connect the 12V battery charger to the Charging Port on the side of the battery pack via the black weather proof connector Do not attempt to charge the battery via the Power Connector The optional battery charger should be used to charge the battery pack If a different charger is used it must be suitable for charging sealed type 12 volt lead acid batteries The charging current should be no more than 2 5 Amps The charging time will depend on the charging current At 1 Amp charging current the battery should be allowed to charge for 8 12 hours depending on the depth of discharge Place the protective cap over the charging socket when
32. command protocol as a 9400 Data Logger and WinCollect should be setup to communicate with a 9400 The Serial port RS 232C is used for downloading data from the MicroVol The MicroVol port is a DB9 female connector on the underside of the sampler This port should be covered using the cap supplied when not in use to keep out dust and moisture Connect a standard 9 pin serial cable to this port Connect the other end of the cable to your computer If your computer has a 25 pin male serial port you may need to use a DB9 M DB25 F adaptor or the appropriate 9 pin to 25 pin cable 5 1 Using MicroVol Downloader software The MicroVol Downloader software is supplied with the MicroVol on the Utilities CD The software may be installed on any PC type computer running Microsoft Windows 95 Windows 98 or Windows 2000 It will not run under Windows 3 x A laptop computer is a practical way of downloading the data from a HiVol that is in service in the field If your laptop does not contain a serial port then a U S B serial adaptor should be used It is highly recommended that the easysync U S B serial adaptor be used for this function as it has been widely tested with all Ecotech products works effectively and can be purchased from Ecotech To install the software e Close any programs that are running on the computer visible in the Windows task bar e Put CD in the computers CD rom drive e A window will appear called Software Utilitie
33. ction if using the wind sensor to control the MicroVol This is achieved by setting the Trigger Lo and Hi parameters to the same value normally set them both to zero The Wind Menu contains wind sector and speed conditional sampling parameters When the wind direction angle has been greater than the counter clockwise wind direction but less than the clockwise wind direction and has been greater than the Low wind speed limit but less than the High wind speed limit for between 60 and 80 seconds the Wind condition is satisfied If all other conditions are satisfied eg programmable MicroVol 1100 User manual 1 6 Operation timer settings then the MicroVol pump will operate and sampling will take place Once this condition is satisfied the MicroVol will sample for at least 40 seconds This time delay prevents rapid on off cycling if the wind condition is borderline To over ride wind conditional sampling or if there is no wind sensor connected set the parameter values as shown so that the wind conditions are always satisfied See section 2 1 1 for more information on wind sector set up CCW W Dir Set Counter clockwise wind direction CW W Dir Set Clock wise wind direction LO W Speed Set Low wind speed limit m s HI W Speed Set High wind speed limit m s Figure 19 Wind Menu 3 3 2 3 Trigger Setup Menu The Trigger menu appears as follows Trigger Lo Set trigger voltage range lower limit V Trigger Hi Set trigg
34. d to process the data if different computers are used The settings are located in the Windows menu system under Start Settings Control Panel Regional Settings Time and Date 5 2 Communicating with the MicroVol alternative method An alternative more complicated way of downloading data is to use a terminal emulator Send EA command then use terminal to download file using X modem Using this method the data will be in hexadecimal format and will need to be converted to ASCII format If required it is possible to connect a modem to the MicroVol to collect data It is also possible to use a terminal program to communicate with the MicroVol via the Serial port RS 232C This may be useful for remote interrogation or for connecting the MicroVol to an external data logger Contact Ecotech for details E port RS 232C Wind Speed amp Direction Input plug ALA Temperature and Humidity 4 Sensor Figure 27 MicroVol 1100 Underside 39 Downloading Data MicroVol 1100 User manual 1 6 5 3 Calculations The MicroVol 1100 flow controller regulates the volumetric flow rate of air when the pump is operating In built temperature and barometric pressure sensors collect ambient data which are stored in the internal data logger The MicroVol 1100 uses the temperature and pressure data to determine the density of the gas current data can be viewed in the Status menu Historical data can be downloaded t
35. er voltage range upper limit V OFF Delay Set sampling period in hours minutes ReTrigger Set retrigger mode YES NO Figure 20 Trigger Setup Menu The trigger works in conjunction with other conditional parameters Check other Setup menu parameters to ensure they don t interfere with the Trigger program for example Times and Wind settings Likewise if external triggering is not required set the trigger parameters so that they do not interfere with other programs The external trigger can be disabled by setting Trigger Lo and Trigger Hi to the same value typically zero Setting OFF Delay to 00 00 will behave as if it were set to 00 01 it does not disable the trigger function and if triggered the sampler will run for 1 minute The RunTime parameter will also increase by 1 minute in this situation Note It is necessary to disable the Wind function if using the Trigger function to control the MicroVol This is achieved by setting the wind direction range from 0 to 360 and wind speed from 0 to 100 as described in section 3 3 2 2 The Trigger Menu contains parameters for specifying an external trigger to start the MicroVol sampling period Example a separate gas analyser might be used to trigger the MicroVol to start sampling when the gas concentration reaches a certain alarm level You could also use a contact closure switch or relay to start and stop the MicroVol 27 Operation 28 MicroVol 1100 User ma
36. from the MicroVol memory Select Yes or No e The data will appear on the screen e To close program click on the Xl box top right corner of the window The data will be stored in the directory and file specified The data is separated by a comma called a delimiter The data file may be imported into another program such as Microsoft Excel by specifying that the data is delimited using comma delimiters Using this method the data will be formatted into individual cells The data is presented in the following format Report Date Time Barometric Pressure mmHg Ambient Temperature C Wind speed m s Wind direction Sigma Theta standard deviation for wind direction Rainfall bucket tips Flow rate l min Corrected accumulated sample volume standard litres Uncorrected accumulated sample volume litres Note Wind direction data should be ignored if the wind sensor is not installed Note Wind direction average data will be zero if there has been no wind speed data for the entire averaging period 38 MicroVol 1100 User manual 1 6 Calibration If the data file already exists any further downloading of data will be appended to the existing data in that file If the data file does not exist the MicroVol Downloader software automatically creates the file Note The Windows regional settings for time and date format should be set the same on the computer used to download the data and the computer use
37. g salt water 2 1 Connecting Equipment to the Wind Speed and Direction Input Plug The Wind Speed and Direction Input Plug is a 6 pin connector located on the underside of the MicroVol One of the following external devices may be connected to the Input Plug Note It is not possible to connect more than one of the following at any one time The MicroVol is easily configured to accept these inputs e Wind speed direction sensor e Remote external Trigger e Rain gauge 2 1 1 Connecting a Wind sensor or Rain gauge The wind speed and direction sensor and tipping bucket rain gauge are optional accessories The cables may be ordered separately and can be manufactured to any length specified Either cable connects to the socket on the underside of the MicroVol A weatherproof cover is fitted to the socket to exclude dirt and moisture This cover should be removed only when a cable is connected to the socket Mounting hardware is included The wind sensor includes a 1 2m cross arm and rotating adaptor for aligning the sensor to true North The rain gauge includes a bracket which may be mounted to a 25 50mm pole either vertical or horizontal The MicroVol is factory configured for the wind sensor input default configuration If a rain gauge is used the configuration should be changed Refer to the Hidden Menu section for details of how to set up the MicroVol for rain gauge or wind sensor input MicroVol 1100 User manual 1 6 Install
38. h the power connector to the underside of the MicroVol 1100 Switch on the power to the mains adaptor at the wall socket The Mains power adaptor has an IEC 320 2 pin connector It may be necessary to purchase an input lead to suit the local power point outlet configuration The Mains power adaptor operates on most AC power supplies from 100 240V and either 50 or 60 Hz 2 4 2 Connecting power Battery pack option If the battery pack is being used first connect the power lead to the underside of the MicroVol 1100 Then centre the MicroVol 1100 on top of the battery pack The latch tension may be adjusted if necessary by turning the threaded part of the latch Do not MicroVol 1100 User manual 1 6 Installation over tighten the latches The latch tension should be approximately equal on both sides Check this with the latches released The latches should both project downwards at about 45 Fasten the latches to secure the battery pack to the MicroVol 1100 E a 1 Do en EX L1 PE IH 1 il Attach power lead Adjust latch tension evenly Close latches Figure 5 Battery pack connection sequence When transporting the sampler the inlet assembly should be removed and stored in a clean container or zip lock plastic bag The inlet tube should also be removed and capped The MicroVol 1100 can then be packed in the original container Exchanging filter
39. hour the day and the day of week as well as the calendar dates it will run between Conditional sampling based on wind speed and direction Ultra efficient long life pump designed for flow rates of 1 to 4 5 l min Low power consumption e Optional solar panel and battery operation 9 Auto pump shut down when voltage is low to protect battery Light weight rugged weather proof construction and low noise operation suits indoor and outdoor operation Precision flow controller ensures flow rate control within 1 of set point amp TSP Sampling inlet standard inlet adaptor optional extra includes rain cap and insect mesh for outdoor use Optional dual stage filter pack can collect particulate matter and gaseous compounds on separate filters Example First stage collects fine particulate inorganic anion concentrates or acidic particulate Second stage collects non reactive gases The Inlet must operate at flow rate of 3 0 l min to achieve the specified cut point MicroVol 1100 User manual 1 6 Introduction 1 2 Specifications 1 2 1 Flow Control Volumetric flow rate range 4 5 l min Flow accuracy 296 of reading Flow repeatability 0 596 of reading 1 2 2 Inlet Assembly Inlet Assembly material Anodised aluminium Size Selective Inlets PM io standard TSP pending PM adaptor option Cut point 50 cut point at 3 l min volumetric flow rate Filter h
40. ic Diameter EAD of 2 5 microns or less PPM Parts Per Million Introduction MicroVol 1100 User manual 1 6 1 4 Background Theory 1 4 1 Particulate Sampling The MicroVol is designed primarily as a particulate sampler The MicroVol pump and flow controller draws a sample of air through a specially prepared filter The filter collects the airborne particles for analysis The MicroVol controls the flow rate and records the volume of air that has been sampled The airborne suspended particles are collected on a pre weighed filter over a pre determined period After the sampling period is complete the filter is removed and re weighed to determine the concentration and or composition of suspended particulate Concentration results are typically expressed in micrograms per cubic metre of air sampled at standard temperature and pressure conditions Acceptable levels have been established to govern the amount of airborne particulate of a particular size and composition that may pose a health hazard to humans The MicroVol 1100 utilises a size selective inlet to restrict the sampled particulate to being that of a designated size or smaller A PM sample inlet restricts the collected particulate to that with an aerodynamic equivalent diameter AED of 10 microns or less PM sample inlet similarly restricts the collected particulate to that with an aerodynamic equivalent diameter AED of 2 5 microns or less
41. ion is that of the Power supply voltage which should always be maintained at above 11 VDC To set the MicroVol 1100 to run continuously enter the Setup menu Select Setup menu then Times menu Select Start Date Enter a date that is before the current date Example Set the Start Date as yesterdays date or earlier Select Date Enter date in the distant future Example Set the End Date as tomorrows date or later Select Daily Set On Time 1 to 00 00 Set Off Time 1 to 24 00 Select Weekly Set all days to YES Set Days cycle to 1 Select Setup menu then Wind menu MicroVol 1100 User manual 1 6 Operation Set CCW W Dir to 0 Set CW W Dir to 360 Set LO W Speed to 0 Set HI W Speed to 100 The MicroVol s data logger collects data even when the pump is not running The data is collected at regular intervals called the averaging period The averaging period is set in the Logger Setup menu The data that is logged is the average data value during the averaging period with the data being written to memory at the end of that period Data from up to 150 averaging periods may be stored in the MicroVol Once the data logger memory is full the MicroVol stops collecting data The MicroVol begins collecting data when the logger accumulator is cleared When setting the averaging period keep this in mind If you want to collect one day worth of data it will be necessa
42. monitor wind speed and direction using an optional external wind sensor Wind speed and direction data are averaged and stored in internal memory and may be used as triggers for conditional sampling The MicroVol 1100 also incorporates a time clock and programmable timer enabling multiple time based sampling programs to be configured The MicroVol 1100 internal data logger stores time based data averages at user selectable intervals The data includes date and time stamp flow rate total sample volume average temperature barometric pressure and either wind speed and wind direction or rain fall information Data values stored in the MicroVol may be downloaded via the RS 232C Serial port The MicroVol 1100 is extremely quiet allowing it to be used at indoor sampling locations to assess human exposure to particulate matter PM and is housed in a weatherproof enclosure for outdoor sampling in a range of environments Some typical sampling applications include Sample collection at surface mines Fence line sampling Saturation sampling to determine gradients in PM concentration Indoor air quality studies for health and safety Locations where mains power is unavailable Introduction MicroVol 1100 User manual 1 6 Sampler features Active volumetric flow control Internal data logging Sampler setup via four line LCD display and keypad Sampling procedure be programmed through specific time periods from the
43. nge push in fitting near the base of the MicroVol 1100 Once initial resistance is felt push the inlet tube into the fitting a further 5 10mm to make a gas tight seal Then clip the tube to the side of the MicroVol 1100 Put one of the seal caps on the top of the tube until the filter holder impactor assembly is ready to be attached Keep the caps for future transportation 1 5 2 Filter holder impactor assembly Detach the blue filter holder from the metal impactor assembly Disassemble the filter holder install a filter in the filter holder then re assemble the filter holder and impactor assembly The filter holder and impactor assembly fit together as shown in Figure 1 Make sure that the parts are pushed together and sealed correctly Remove the cap from the upper inlet tube and install the filter holder impactor assembly on top of the tube Once initial resistance is felt push the assembly down another 5 10mm to make a gas tight seal on the sample tube Installation MicroVol 1100 User manual 1 6 2 Installation Important e clean 47mm filter should always be installed in the filter holder before applying power e Always operate the MicroVol 1100 with the rain cap installed on top of the Inlet Assembly refer to Figure 1 e Do not expose the MicroVol 1100 to excessive amounts of water splashing or spray Avoid excessively humid environments if possible e Keep the MicroVol 1100 away from corrosive environments includin
44. nual 1 6 The data logging features and parameters in the Status menu continue to function as normal The triggering device must have either a contact closure or logic output signal 0 5 VDC A cable will be required to connect the triggering device to the MicroVol For details of the electrical connections refer to section 2 1 2 External triggering uses the wind direction input connector and internal circuitry to monitor the external trigger so wind control and external trigger cannot be used together The Trigger Lo and Trigger Hi parameters specify the voltages that the external trigger voltage must be between to trigger the MicroVol If these voltages are the same then external triggering is disabled If the external trigger is a contact closure then Trigger Lo should be 0 5v and Trigger Hi should be To trigger above a set voltage set Trigger Lo to that switching voltage and Trigger Hi to 6 To trigger below a set voltage set Trigger Lo to 1 and Trigger Hi to that switching voltage The OFF Delay specifies the time in hours and minutes that the Microvol continues to sample after triggering Unlike the wind sensor menu the status of the trigger device is checked the minute when the seconds of the MicroVol clock reach 00 seconds The MicroVol switches on when a valid trigger is received The MicroVol will then sample for a set time duration called the OFF Delay Trigger function uses a Trigger Time
45. nurur owr Luny pesde q eum puo o dureg um 1135 opdures WEN loquunu Io uoneoo Zurpdures s 1 eum xooq 307 Calibration Check Sampling 54
46. o a laptop computer via the serial port Note Once the internal data logger memory is full the MicroVol stops collecting data If the sample pump is still operating when the memory is full then use the current data in the Status menu to read the uncorrected sample volume in litres Tot Vol I or the Corrected sample volume in standard litres Cor Volume Using the ambient and Reference temperature and pressure information the sample volume is automatically corrected to Standard Temperature and Pressure STP conditions The MicroVol s internal data logger stores both uncorrected and STP corrected sample volume data in the internal memory The sample volume data is used to calculate the mass concentration The mass concentration may either be reported at STP corrected conditions or at actual ambient conditions by using the relevant sample volume data in the calculation Refer to local reporting standards The STP Reference conditions have been factory set but may be changed via the Setup menu Mass concentration data is generally reported in g m referenced to standard temperature and pressure STP There are however different accepted values of STP Standard Temperature Standard Barometric Pressure mmHg MicroVol Setup Ref Temp Ref BP menu parameter Australia 0 C 273 18K 760 Europe USA 25 298 18K 760 Japan 20 C 273 18K 760 Note 760mmHg 760Torr 101 325kPa
47. o move the cursor left or right use Page up or Select gt To change the character under the cursor press Up arrow or Down arrow Note Some characters are fixed and can not be changed The order in which the characters appear is FP first character 0123456789 FP other characters 0123456789 Integer 0123456789 Time Date 0123456789 Text amp 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijkImnopqrstuvwxyz Day SUN MON TUE WED THU FRI SAT YesNo YES NO To accept the edited value press Enter To discard the edited value press Exit 20 MicroVol 1100 User manual 1 6 Operation 3 2 Main screen The main screen will constantly show parameter such as date and time and other depending whether the pump is on or off see Figure 7 and Figure 8 If the user wishes to change the MicroVol s settings pressing Enter of select will then open the main menu as shown in Figure 9 Pump On Auto Manual 20 09 05 Displays current operating mode amp date Sampling 11 53 23 Displays current time Flow l min 3 000 Displays current flow rate Temp C 22 90 Displays current temperature Press mmHg 763 4 Displays current barometric pressure Figure 7 Main screen pump on OR Pump Off Displays current date Displays current time Ecotech 20 09 2005 MicroVol 11 53 23 Displays status message stating A one line status message is wis pump is off displayed Figure 8 Main screen pump off
48. of this manual in any form is prohibited without the written consent of Ecotech Pty Ltd Front Matter MicroVol 1100 User manual 1 6 WARNING Safety requirements reduce the risk of personal injury caused by electrical shock follow all safety notices and warnings in this documentation e If the equipment is used for purposes not specified by Ecotech the protection provided by this equipment may be impaired e Replacement of any part should only be carried out by qualified personnel only using parts specified by Ecotech Always disconnect power source before removing or replacing any components ii MicroVol 1100 User manual 1 6 Front Matter Factory service warranty This product has been manufactured with care and attention The product is subject to a 12 month warranty on parts and labour The warranty period commences when the product is shipped from the factory Consumable items are not covered by this warranty To ensure that we process your factory repairs and returned goods efficiently and expeditiously we need your help Before you ship any equipment to our factory please call your local Ecotech service response centre or distributor to obtain a return authorisation number When you call please be prepared to provide the following information l your name telephone number and Facsimile number Your company name The model number or a description of each item The serial number of each item if applicable
49. older material Polycarbonate Filter element 247mm Polypropylene ringed circular filter various materials and pore sizes available 1 2 3 Operating environment Ambient temperature range 0 to 45 Temperature accuracy 1 Barometric pressure range 600 900 mm Hg Torr 800 1200 hPa Barometric Pressure accuracy 4 mm Hg Torr Note Avoid corrosive salty or excessively humid environments where possible 1 2 4 Construction and Dimensions Housing PVC plastic with rubber feet and weatherproof cap Case dimensions 300 mm height x 170 mm diameter Sample tube length 500mm 1000mm option or other lengths available Inlet height approx 600mm standard Weight 3 75 kg with mains power adaptor 8 15kg with battery pack option Introduction MicroVol 1100 User manual 1 6 1 2 5 Power Operating Voltage 11 15 VDC I2VDC nominal Power consumption typ Power consumption max Power consumption standby Power connector Power sources 2 5 3 watts 210 mA 12 VDC Using clean Teflon filter with support ring 2um pore size 3l min 6 watts 500 mA 12 VDC 0 6W 50 mA 12 VDC 2 5mm DC connector Centre outside Mains power adaptor standard Battery pack optional Solar panel battery charger optional Low voltage cut out At 11VDC auto reset 12VDC adjustable 1 2 6 Accessories Standard Size Selective inlet
50. platform for sampling of PM or TSP particulate and for monitoring basic meteorological parameters Incorporating a pump filter holder and flow control circuit the sampler is microprocessor based and features internal data logging of flow and meteorological parameters The MicroVol 1100 constantly monitors the mass flow rate of air passing through the filter and pump This mass flow is computed with the ambient pressure and temperature sensor measurements to calculate the volumetric flow rate e g 3L min variation in pump vacuum is The pump is a linear diaphragm pump and the correct flow rate is maintained by varying the amplitude of diaphragm movement this changes the vacuum created by the pump more vacuum for more filter loading The MicroVol 1100 incorporates Active Volumetric flow control which mediates pump speed and air velocity to guarantee a constant sampling flow rate no matter the filter loading of restrictions in place The MicroVol 1100 is designed to operate from a 12 VDC power supply It can be powered from a variety of different sources including the AC mains power adaptor an optional battery pack or solar panel and battery combination The MicroVol 1100 incorporates ambient temperature pressure and humidity sensors which are used to automatically maintain a constant volumetric flow rate of typically 3 litres per minute l min through a 47mm diameter circular filter The MicroVol 1100 includes the facility to
51. plays current ambient temperature Displays current barometric pressure Displays current wind speed Displays current wind direction Displays Relative Humidityl Cor Volume Displays sample volume corrected to STP RunTime i Displays sampling duration pump running Pwr Supply V Displays current power supply voltage M S Ratio Day of Week Displays pump load 0 000 2 000 Displays current day of the week Time OK Is current time date combination active Start Dt OK Is current date after timer start date End Dt OK Is current date before timer end date DayOWeek OK Is this an active sampling day Wind OK Is wind condition sector speed active Power OK Is power supply voltage in range Figure 11 Status Screen if no sensor is installed wind direction displays random data Standard Temperature and Pressure set in the Setup menu Note Some parameters may be reset to zero by Clearing Accumulated data in the Setup Logger Setup Menu 23 Operation MicroVol 1100 User manual 1 6 3 3 2 Setup Menu 24 The Setup Menu contains a number of sub menu items and some direct entry parameters where the user can program various parameters Times To Times Menu Wind To Wind Menu Trigger To Trigger Setup Menu Logger Setup To Logger Setup Menu Clock To Clock Menu Flow l min Set sampler flow rate litres minute Ref Temp C Set STP standard temperature Ref BP mmHg Set STP standard pressure
52. ring grease should be re applied to the O rings as needed to ease assembly and disassembly When re assembling sections with O rings take care to align the pieces well and to twist and slide them together smoothly to avoid displacing or damaging the O rings The impactor plate locates in the nozzle body grease side towards the nozzle The inlet should be held upside down during assembly The adaptor tube retains the impactor plate Apply gentle pressure to the adaptor tube to seat it against the impactor plate 43 Maintenance MicroVol 1100 User manual 1 6 6 3 3 Pump maintenance The MicroVol 1100 pump is available as a spare part and takes only about 10 minutes to replace This may be required after a period of several years due to deterioration of the seals Remove the sampler from the plastic tubular housing Remove the tube from the port on the side of the pump see Figure 28 noting which port the pipe is connected to and turn the sampler on to check whether there is vacuum and pressure on the appropriate ports If there appears to be a problem disconnect the pump terminals from the circuit board cut the ties that secure the pump and remove the pump from the sampler Ease the pump out of the rubber mounts The pump should be exchanged contact Ecotech for spares details Replace with a new pump and reassemble Do not over tighten the cable ties that secure the pump The pump needs to be free to vibrate in the rubber mountings The
53. ry to set the Logger setup averaging period to at least 10 minutes If the averaging period is set to one hour 150 hourly averages of data will be collected This equates to over 6 days worth of data Note Data is also collected when the MicroVol is in Manual mode 3 1 2 Menu operation The MicroVol is equipped with a six function keypad The keys are Exit Page up Select Enter Up arrow Down arrow To enter the menu system press Select or Enter To move the cursor to a different menu item press the Up arrow or Down arrow If the current menu is larger than four items then the screen will scroll up or down when necessary To select the menu item under the cursor press the Select or Enter key To exit to the previous menu press Page up To exit from the menu system press Exit Operation MicroVol 1100 User manual 1 6 3 1 3 Changing Menu Settings Each menu comprises a number of menu items The menu item contains a description on the left and an operand on the right The operand types are Type Operand Text Floating point FP number 6 characters max Long floating point number 8 characters max Integer 3 Long integer 8 Text 6 characters max Time hh mm ss 24 hour format Date dd mm yyyy day month year mm dd yyyy optional format yyyy mm dd optional format Day SUN MON TUE YesNo YES NO Submenu 2 When an editable menu operand is selected the following functions are available T
54. s e Click on the Install software button e Within this new window select xVol Commuicator Now follow the prompts and windows to install the program e The downloader program will open automatically ready for use 36 MicroVol 1100 User manual 1 6 Calibration To run the MicroVol Downloader program e Click on the Start button e Select Programs then click on MicroVolDownloader e The program will run and a window will appear e The program is simple to use e Enter the settings menu through the properties under the Comm menu by clicking the following icon e In the Output file box type the directory pathname and filename for the data file to be created Properties Dutput file c AM Documents temp txt w Y If the file exists Bs Append v Connection Clear buffer after download Prompt User v Figure 25 Properties screen e Next click on the Connection icon show in the column on the left hand side in Figure 25 Select Com port from pulldown menu Do not select a port that says In Use e Click on Collect Data button amp shown in Figure 26 37 Downloading Data MicroVol 1100 User manual 1 6 xVol Communicator EIE Comm Mode Edit ea Copy Data Properties Collect Data Download Aborted COM16 Figure 26 Output screen e The data will be collected After a few seconds a box will appear asking whether you want to clear the data
55. s is a simple task the sampler being fitted with a quick connect push in fitting on a 47mm filter holder The entire filter holder and impactor assembly may be removed quickly and simply taken away and the filter element replaced under laboratory conditions A large variety of filter media is currently available with various pore sizes and many are suitable for air sampling Some of these include Installation MicroVol 1100 User manual 1 6 Stretched Teflon filters Quartz glass fibre filters Fluoropore filters Membra fil filters Select the type of filter that is most suitable for the particles that you are interested in sampling but do not use filters that are or become too restrictive or the sampler will be unable to maintain constant flow rates Filters with a sealing ring around the outer edge are recommended The filters should only be handled with clean non serrated tweezers never with fingers and only at the edge Inspect each filter for defects such as pinholes loose material discolouration and non uniformity Discard any filters that are defective in any way 2 6 1 Pre collection equilibration Place filters on a Petri dish and label each dish with a filter number The filters need to equilibrate for at least 24 hours under precisely controlled temperature and relative humidity conditions Relative humidity should be maintained at a constant level of 50 10 with a variability of less than 596 Au
56. shed out by inserting a rod down the inlet jet taking care not to scratch the jet then pushing the impactor plate out of the impactor assembly Wipe any dirt off the top of the impaction plates using a lint free cloth Wipe the inside of the holes to remove all grease and dirt components should be wiped initially with a soft clean cloth to remove grease and dirt They should then be cleaned using warm soapy water and rinsed a couple of times with fresh hot water Use compressed air to dry the components Inspect the o rings for damage and replace them if necessary Always apply a trace of o ring grease to the o rings before assembly or they will be damaged The impaction plate should be greased lightly in the centre masking the outer part of the disc so that the grease is only in the centre of the impaction plate covering an area about 10mm in diameter Light petroleum grease such as Vaseline can be used in many applications where particulate composition is not being analysed Otherwise silicone grease such as Dow Corning Slipicone release spray can be used Dry the plate thoroughly with a clean lint free cloth If necessary store in a clean zip lock bag until ready for use The acceleration nozzle orifice should be cleaned after approximately 1000 hours of use depending on loading Do not use anything sharp to clean the passage a soft brush or pipe cleaner and soap solution is sufficient Re assembly A light smear of silicone O
57. stralian Standards 3580 9 6 1990 Temperature should be maintained at a constant level of 20 25 C Australian Standards 3580 9 6 1990 6 place microbalance with a resolution of better than 0 01mg is required Before initial weighing of the filters turn the microbalance on for 1 hour to allow them to stabilise Weigh each filter at least twice and record the average initial mass of each filter W Always check the zero reading of the microbalance between each reading Immediately after weighing place each filter into either a filter holder and assemble the filter holder or into a Petri dish with a lid The sample travels down through the filter holder so ensure that the filter is installed with the sample side up Record the relative humidity temperature date and time of the initial weighing 2 6 2 Filter exchange Filter element exchange should ideally occur under laboratory conditions Two or more filter holders can be used on a rotating basis Extra filter holders are available as spare parts Transport the filter holder filter element installed in a press seal anti static plastic bag to the sampling site Whenever a filter is replaced record the time date sampling times and dates This may be a good time to record the sample volume and corrected sample volume or download the data from the MicroVol See section 5 MicroVol 1100 User manual 1 6 Installation A log book sample page can be found at the back of
58. the battery The charging time will vary depending on the initial charge state of the battery When the indicator lamp is green the battery is fully charged The universal charger may be connected continuously if required 8 1 4 Battery Charger basic 240V Model The basic battery charger is designed to recharge the MicroVol battery pack via the charging connector The battery charger has a battery voltage selector switch for 6V and 12V batteries The MicroVol battery is a 12V battery so the battery charger switch must be set to 12V Do not connect the charger when the switch is in the 6V position or the battery and charger may be damaged Switch the power off and unplug the charger before connecting or disconnecting the battery and charger The battery charger should be switched off at the mains outlet when connecting and disconnecting the battery The charging time will vary depending on the initial charge state of the battery If the battery is completely flat the battery should be charged for 12 hours The charger may be left connected for up to 24 hours Do not leave the charger permanently connected to the battery 50 MicroVol 1100 User manual 1 6 Accessories and Options The upper filter holder has an open face for collecting particulate matter while the lower filter holder is without open face used only for collecting gaseous compounds The filter holders are connected with a threaded coupling and can be separated easily
59. the charger is not connected 8 1 2 Disposing of old batteries The battery pack contains lead acid batteries After several hundred uses battery performance will decrease Old batteries must be disposed of according to local regulations Most areas require that lead acid batteries be recycled and have a facility for battery disposal Contact your local council for more information 49 Accessories and Options MicroVol 1100 User manual 1 6 8 1 3 Battery charger with timer 100 250V Model The universal battery charger is designed to recharge the MicroVol battery pack via the charging connector The battery charger automatically controls the charging cycle Features e 3 step charge controller e Universal supply input 100 250VAC e Charge current is not affected by voltage fluctuations e 3 stage charging cycle coloured indicator shows status e IEC 320 2 pin connector The charging cycle occurs in three stages The light on the charger indicates which stage is current Stage Indicator red battery charge state 0 80 Initial boost mode constant current charging at 2 3A until battery voltage reaches 14 7V Stage 2 Indicator yellow battery charge state 80 10096 Timer mode 14 7V maintained for approximately 2 hours Stage 3 Indicator green float mode Battery is charged charger maintains battery at 13 8V The battery charger should be switched off at the mains outlet when connecting and disconnecting
60. this manual 2 6 3 Post Collection Equilibration Carefully remove the filter elements from their holders and check them for defects that may have occurred during sampling The sample should be reasonably even across the element Localised dark spots could indicate pinhole leaks Filter holder support screens will produce a pattern on the filter If this is unacceptable due to the type of analysis being performed requiring a steady filter loading an optional woven wire screen support is available Place the filter element on its numbered Petri dish and cover the top of the dish with a paper towel Record the relative humidity temperature date and time of the post collection equilibration The equilibration temperature and relative humidity should be as close as possible to the initial equilibration conditions Once again each filter should be allowed to equilibrate for at least 24 hours 2 6 4 Final weighing Use the same microbalance that was used in the initial weighing Before weighing the filters turn the microbalance on for 1 hour to allow them to stabilise Weigh each filter at least twice and record the average final mass of each filter Wf Always check the zero reading of the microbalance between each reading Immediately after weighing place each filter into a Petri dish with lid sample side up and record the time and dates that the sample was taken Record the relative humidity temperature date and
61. time of the final weighing Refer to the Calculation section for method of determining mass concentrations MicroVol 1100 User manual 1 6 Operation 3 Operation Remove the cover from the top of the MicroVol 1100 and connect the power supply The MicroVol flow temperature and barometric pressure sensors have been factory calibrated The flow rate is set in the Setup menu and should normally be set to 3 The size selective inlet particle cut point will be most accurate when the flow rate is set to 3 0 l min The size selective inlet was designed to operate at 3 0 l min to ensure that the MicroVol 1100 takes a sample of sufficient quantity while allowing sufficient pump capacity for when the filter becomes loaded Low FLOW RATE Ain SAMPLER Figure 6 MicroVol 1100 control panel cover removed The MicroVol 1100 is microprocessor based and features internal data logging of flow and meteorological parameters The internal data logger stores time based records at user selectable intervals The data includes Date and Time flow rate volumetric sample volume uncorrected and corrected to Standard Temperature and Pressure conditions average temperature pressure wind speed and wind direction or rainfall information Values stored in the sampler may be downloaded via the RS 232C Serial port Operation MicroVol 1100 User manual 1 6 The MicroVol 1100 includes an input connector for wind speed and direction
62. tion Set the wind direction conditional sampling parameters in the Wind menu Set CCW W Dir This is the compass direction of the counter clockwise CCW end of the ACTIVE sector Set CW W Dir This is the compass direction of the clock wise CW end of the ACTIVE sector Also set the Low and High wind speed limits for sampling See section 3 3 2 2 for more information on wind menu set up Figure 24 Conditional sampling wind direction sensor setup 30 MicroVol 1100 User manual 1 6 Operation 3 5 Rain Gauge The rain gauge can not be used for conditional sampling The data logger automatically collects rainfall data in a counter that is reset by clearing the accumulator Setup Logger Setup menu The rainfall counter value is stored at the programmable averaging periods By looking at when the rainfall data increases the time that the rainfall occurred can be worked out The MicroVol data logger increments each time the rain gauge bucket tips The data value increases until the data logger is reset using the Setup Logger setup Clear Accumulator menu Note Clearing the accumulator will clear all data in the MicroVol 1100 internal data logger The rainfall units are tips which refers to the number of times the rain gauge bucket fills and empties The units can not be changed Multiply the data by the calibration factor to convert to millimetres or inches of rainfall 31 MicroVol 1100 User

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