User manual - The eNose Company
Contents
1. Sem Q V Fig 3 1 Aerekaprobe device Reference air inlet Reference air exhaust Sample inlet Sample exhaust Pump switch amp indication LED Sample switch amp indication LED Backup battery switch 5 Volt DC adapter inlet Indication LEDs WA Wall outlet adapter connected PoE Power over Ethernet available SGL Signal 10 USB connector 11 UTP network connector for remote support only Se ee ee a a 2012 The eNose company Version 0 1 company 4 1 4 1 1 Aerekaprobe 13 of 34 Operation The Aerekaprobe can be operated without the Daemeter software while measuring To retrieve the data use the logbook or change the settings the Daemeter software is needed Aerekaprobe Front panel The Aerekaprobe has two switches and two signal LED s on the front panel With these the Aerekaprobe can bet set to 3 distinct states 1 Standby In this state the pump and both signal LED s are off Each sensor module generates one measurement per 15 minutes 2 Active reference Pump is on air is drawn from the reference inlet 1 Pump signal LED is either blinking or on The valve signal LED is off Each sensor module generates 3 measurements per minute 3 Active sampling Pump is on air is drawn from the sample inlet 3 Pump signal LED is on Valve signal LED is either blinking or on Each sensor module generates 3 measurements per minute The pump switch 5 controls the2. see ee _ ai S o 2 eo e i P P P gt gt Place the O ring centered on the Perspex part underneath the circuit board in such a manner that the cap of the sensor is placed on top Insert the new sensor module Take care that the pins align with the connector on the main board Place the screws back and tighten the screws Ss NOTE First loosely tighten all 4 screws before applying the final tightening Slide the circuit board back into the enclosure 4 slot counting from the bottom Place the screws back 2012 The eNose company Version 0 1 eN company Aerekaprobe 29 of 34 6 Chemical detection principle The Aerekaprobe employs an array of up to twelve intelligent sensor modules Each sensor module contains driving electronics a microprocessor and a unique silicon serial number The sensors are fitted on a connector The sensors are micro hotplate types as illustrated in the figure below Due to the low thermal mass temperature regulation is in the millisecond regime 7 SL E gt ge i A r 5 T gt 44 x z 2 ae HGR RES HHI From left to right The intelligent sensor module the sensor with cap removed the white dot is the actual sensor material close up of the micro hotplate The metal oxide sensors are temperature modulated under software control in a working range of typically 180 340 C In this range the metal oxide sensors behave as semiconductor
3. 1 3 1 Aerekaprobe Dimensions 220 x 105 x 65 mm L x B x H Weight incl battery 800 g Power supply 5V 1A max Operational temperature 5 C 40 C 0 2 C Relative Humidity Max 90 3 Type S063 Back up battery Battery pack Li ion LIP18650 3 7 V allows operation for more than 3 hours without external power supply Communication interface USB 1 1 Data buffer Onboard DataFlash stores up to 15 hours of continuous measurements User Interfaces Pump On Off switch amp signal LED Sample switch amp signal LED Backup battery switch Daemeter software 1 3 2 System requirements For the Daemeter application software Windows version XP or higher Pentium CPU gt 1 GHz Available disk space 4 Gbyte for data storage Microsoft DotNet Framework version 2 0 or higher 2012 The eNose company Version 0 1 Q Co amp Nose company 2 1 2 1 1 2 1 2 Aerekaprobe 6 of 34 Safety General Safety Intended use Aerekaprobe is intended to be used for the measurement of gasses in controlled conditions It can also be used in unconditioned circumstances but this will affect the pattern recognition of the data The Aerekaprobe may not be used for anything else then measurement of gasses The sensor specifications determine which gasses can be measured In case of doubt always contact The eNose Company The Aerekaprobe may not be used in an explosion risk area Warning Read this manual carefully a
4. Technical information 1 1 General description 1 2 Purpose of this manual 1 3 Technical specifications 1 3 1 Aerekaprobe 1 3 2 System requirements Safety 2 1 General Safety 2 1 1 Intended use 2 1 2 Warning 2 1 3 Electrical safety 2 1 4 Radiation 2 2 Notation of the safety information 2 3 Disassembly and disposal of the device Content 3 1 Content 3 2 Aerekaprobe parts Operation 4 1 Aerekaprobe 4 1 1 Front panel 4 1 2 Performing a measurements 4 2 Software 4 2 1 Installing Daemeter 4 2 2 Retrieving data from a Aerekaprobe 4 2 3 Device settings 4 2 4 Project management 4 2 5 Measurements 4 2 6 Lab journal 4 2 7 Exporting data 4 2 8 Backup Maintenance 5 1 Inspection 5 2 Cleaning 5 4 Replacing a sensor module Chemical detection principle Appendix 1 CE Approval Appendix 2 CSV Format descriptor A2 1 Generic Layout of the file A2 2 Data usage Sinoid shaped representation Thermal loop shaped representation 2012 The eNose company Version 0 1 3 of 34 iWOconNN DO oO OO uw KK KR D e m e N O O N N NNN FP RP RP RP RP eR ee e ABWN ON DDD HRW WW W NNN N HU UU UI W N N WO WWW w W A ABW W The e e amp Nose company 1 1 1 2 Aerekaprobe 4 of 34 Technical information General description The Aerekaprobe is the measuring part of a so called Electronic Nose system An electronic nose is a system composed of one or more non specific sensors a
5. 2009 EN 61000 4 11 Voltage Dips and Interruptions 2004 I hereby declare that the equipemt above has been designed to comply with the relevant sections of the above referenced specifications The unit complies with all Andre Elands Position CEO Document reference No 12COOSO9RPTO On O1 July 2012 2012 The eNose company Version 0 1 Sam Q V Ce The eNose company Aerekaprobe 33 of 34 Appendix 2 CSV Format descriptor A2 1 Generic Layout of the file Items shown in bold are always present in the file The symbol means the amount of lines may vary depending on the project information there are no lines if nothing is declared for that section General Project Information Name Name of the project as defined within Daemeter Start Start point of the project Not Defined if field is not filled within Daemeter End End point of the project Not Defined if field is not filled within Daemeter Data Export Start Start point of data in the export file Data Export End End point of data in the export file Project Description The description of the project as defined within Daemeter Devices used within project Device Aerekaprobe display name Aerekaprobe ID or Aerekaprobe ID if no display name defined Sensors Sensor1 display name Sensor1 ID or Sensor1 ID if no display name defined rest of sensors Defined Classifiers Classifier 1 Value
6. internal pump while the sample switch 6 controls the two way internal sampling valve When in standby state the Aerekaprobe can be activated by pressing the pump button 5 the indicator LED will start blinking for a pre set period of time This time is intended to stabilize the sensor readings and during this period it is not possible to initiate a sampling measurement Once the stabilization period is finished the pump signal LED will stop blinking and be on continuously This is the active state of the Aerekaprobe in which sampling measurements can be started In this state the air is drawn from the reference inlet 1 and emitted from the reference exhaust 2 While the Aerekaprobe is in the active state measurements may be started by pressing the sample switch 6 The sample signal LED will turn on and the internal valve will switch to draw air from the sample inlet 3 and emission will change to sample exhaust 4 The sample time is pre set After this the internal valve switches back to the reference air The sample signal LED will start blinking for a pre set time This is the recovery time and is used to flush the sensors This recovery is also part of the measurement dynamics and may be useful for pattern recognition Once the sample signal LED is off again a new measurement may be initiated h 2012 The eNose company Version 0 1 Q eo amp Nose company Aerekaprobe 14 of 34 4 1 2 Performing a measurements
7. only contain defined measurements within the project and not the other data The Aethena export is a proprietary binary format to be used with the Aethena software and cannot be used for other purposes The generic CSV file can be used with almost all data handling programs It s format is described in Appendix 2 IE NOTE Only defined measurement will be exported not the other data points Backup A backup can be made from the database containing all the data and project definitions by selecting the Backup Database Ss NOTE A backup can only be made when the software is not retrieving data from an Aerekaprobe since this process uses the database h 2012 The eNose company Version 0 1 Q ue amp Nose company 5 5 1 5 2 Aerekaprobe 25 of 34 Maintenance WARNING To ensure proper operation the device needs to be serviced periodically LIFE THREATENING Risk of electrical shock Before servicing the device all power supply needs to be removed Inspection Outer surface needs to be checked weekly 1 Check the Aerekaprobe for damaged or missing parts Especially any tubing needs to be checked thoroughly 2 If any damage is observed please contact The eNose Company 3 Check the sensor response using the headspace of a 100 ppm alcohol stock solution this should produce a noticeable raise in signal Use previous results as reference if amplitude drops more than 50 pl
8. the heater temperature during a full period The electronics and system firmware allow for dynamic precise temperature control with a standard deviation of approximately 1 C The combination of the low thermal mass of the micro hotplates and the dynamic temperature control allows for very fast modulation of the sensor temperatures The measurement interval the time it takes to complete a full thermal cycle is determined by the chosen modulation scheme The limiting steps are the physical and chemical reaction rates at the sensor surfaces as the temperature modulation itself is extremely fast A step from ambient to 350 C can be achieved in several milliseconds Modulation schemes are normally in the order of 5 to 30 seconds per full thermal cycle resulting in the same measurement intervals As standard modulation scheme a sinusoidal period of 20 seconds is used LS The 2012 The eNose company Version 0 1 SNose company Aerekaprobe 31 of 34 Measurable substances The sensor array of the Aerekaprobe is capable of detecting a very large group of volatile hydrocarbons and a range of inorganic substances Due to the detection mechanism the basic requirement is that the substance under investigation will react with oxygen at the sensor surface under the chosen temperature modulation scheme This rules out substances such as the noble gases Argon Radon and Neon Also fully halogenated substances are difficult but not impossi
9. 831 0 924 0 981 1 00 0 981 0 924 0 831 0 707 0 556 0 383 0 195 This results in some programs not in a fully closed loop to close the loop simply repeat the first value pair at the end 1 position is equal to the 33 a z J N Si Ns J ao The amp 2012 The eNose company Version 0 1 eNose company
10. A typical measurement setup is given in the figure below In this setup a relatively large amount of sample is present in a gas sampling bag The pump will draw approximately 80 130 ml sample per minute With the standard sample time of 5 minutes this requires a minimum sample volume of 1 liter to allow a successful measurement filtered M l reference Spas K ie A i air y _ Fi uM oo sample inlet Typical measurement setup 2012 The eNose company Version 0 1 Hem Q V company Aerekaprobe 15 of 34 An alternative setup is given in the next figure In this setup the headspace of the sample is re circulated during the sample phase In this case small sample volumes can be used however the sensor will have a small effect on the sample due to the redox reaction occurring which oxidizes a small part of the sample ringe filters Alternative measurement setup The main air stream can be either ambient air or preferably zero grade air that has been created by drawing ambient air through an active carbon filter An active carbon filter can be easily made up by inserting a wad of cotton wool active carbon pellets and another wad of cotton wool in a large syringe and attaching it to the reference inlet 1 It is highly advisable to always use standard syringe filters on both inlets as these prevent fluids or particles from entering the device NOTE The Aerekaprobe can buff
11. ae AER EK A PR OBE User manual e Nose company rp mhistaerens The Aerekaprobe 2 of 34 Copyright All rights reserved worldwide No part of this manual may be copied distributed transmitted stored in a retrieval system translated into any human or computer language in any form or by any means electronic mechanical magnetic manual or otherwise or disclosed to any third party without the express written permission of The eNose Company The eNose Company may have patents patent applications trademarks copyrights and other intellectual property rights regarding the content of this manual The possession of this manual does not give you any license or other legal right to the use of the above without the express written permission of The eNose Company The eNose Company reserves the right to change the hardware and software of the Aerekaprobe for any reason whatsoever at any time without obligation to inform or indemnify any person or organization 2012 The eNose Company the Netherlands General Warranty The agreed warranty period is counted from the date of delivery All damage to parts of the installation within this warranty are rectified by The eNose Company as soon as possible Consequential damages and damages caused by improper use are not covered by the warranty h 2012 The eNose company Version 0 1 Q Co amp Nose company Aerekaprobe Contents 1 6
12. be 34 of 34 A2 2 Data usage The data exported are the actual measured conductivity values 32 in total in accordance with the number of steps within the thermal profile used A single measurement can be visualized in 2 different manners either as a sinoid shape or as a thermal loop Both of the options are shown below with an explanation how to create these graphs The data can be treated in any number of ways just remember that there is dependence between both the 32 values through the thermal loop applied and the rows through the exposure recovery dynamics in a single measurement 1 data block of 1 sensor One single measurement is always represented by a 32 m matrix of values where n is dependent on the length of the exposure and recovery phase Sinoid shaped representation To get a sinoid shaped representation one simply takes the values 1 to 32 as the x value with the measured conductivity as the y value 146923 4 5 6 7 8 9 10 11 12 13 14 15 16 T7 18 T9 20 21 22 23 24 25 26727 28 29 30 31 32 Thermal loop shaped representation To get a thermal loop representation the thermal step size is needed Due to the shape of the sinoid the needed x values are not equally distributed like the sinoid shaped representation The x values needed for a thermal loop are 0 00 0 195 0 383 0 556 0 707 0 831 0 924 0 981 1 00 0 981 0 924 0 831 0 707 0 556 0 383 0 195 0 00 0 195 0 383 0 556 0 707 0
13. ble to detect Note also that detection is governed by the gaseous concentration of the substance in air Substances with very low volatility will not generate a concentration high enough to meet the lower detection limit of approximately 1 ppm H2S and sulphur containing organic substances have a lower detection limit Examples of the inorganic substances are H2S NO SO NH3 Cl en O3 The group of organic substances is extremely large An example shortlist by no means exhaustive is Light alkanes alkenes and alkynes Light alcohols and aldehydes Light amines and mercaptans Partly halogenated hydrocarbons Volatile acids Volatile aromatics 2012 The eNose company Version 0 1 The e Co amp Nose company Aerekaprobe 32 of 34 Appendix 1 CE Approval EC Declaration of Conformity We The eNose Company of Marspoortstraat 2 7201 JB Zutphen The Netherlands In accordance with the following Directive s 2004 108 EC The Electromagnetic Compatibility Directive Equipment Aerekaprobe Model number 5063 Is in conformity with the applicable requirements of te following al Ref No Title Edition Date EN 55011 Conducted emission test with LISN 2009 A1 2010 EN 55011 Radiation emission up to 1 GHz SAC 2009 A1 2010 EN 61000 4 2 ESD 2009 EN 61000 4 3 Radiated Immunity 2006 A1 2008 A2 2010 EN 61000 4 4 EFT 2004 A1 2010 EN 61000 4 5 Surge 2007 EN 61000 4 6 Conducted Immunity
14. ble and interchangeable data Pump on Time between switching the pump on and the moment the first measurement can be started This period is used to stabilize the sensors after Switching from stationary air to flowing air The default value for this timer is 900 sec 15 min Valve on Time that a sample is drawn via the sample inlet This period is the exposure phase of the measurement and has a default value of 300 sec 5 min Valve off Time that clean air is measured after the valve has switched back to the reference inlet This is the recovery phase of the measurement and has a default value of 300 sec 5 min The Sample button will not respond until this period is finished IE NOTE The Pump on timer defines the time before a first sample can be measured IE NOTE One measurement duration is the sum of the Valve on and the Valve off timers With the button set timers the new settings will be stored in the Aerekaprobe and the new settings will be logged The button Clear will clear the internal buffer memory of the Aerekaprobe This button can be used to skip a night of data when the Aerekaprobe has been standing standby or to reset at the start of a new project CAUTION When pressing the clear data button al data that has not been retrieved will be lost NOTE Only skip data by pressing the clear data button when there is a need for it The standby signal does provide insight in the environmental inf
15. clicking the corresponding Zz and deleted by clicking the re Project classifiers Project parameters Q wi gt o 0U g A l Project classifiers Project parameters Project parameters can be entered by DEE clicking the project parameters tab and Blood pressure mm Hg using the same buttons as above A parameter consists of a descriptive name and can also contain the units of that parameter Add for example the parameter Age with the unit years Weight with the unit Kg or Height with unit cm NOTE The sequence of the classifiers parameter and values in the measurement screen will be the sequence defined in this screen From the list of available projects an active project can be selected by double clicking it which will move the selection dot to that project and close the screen On the main screen the name of the active project is shown above the chart area 2012 The eNose company Version 0 1 SNose company Aerekaprobe 22 of 34 4 2 5 Measurements A measurement is the smallest unit within a project and contains all data measured during 1 valve on valve off cycle for all sensors within a device Each measurement contains its own set of the defined classifiers and parameters hem Q V Adding a measurement can be done via the context me
16. company 2 3 Aerekaprobe 9 of 34 Disassembly and disposal of the device The Aerekaprobe contains materials suitable for recycling Special companies can recycle the equipment so that more material can be used again and less material waste must be processed Enquire about the local regulations for disposal of the equipment Environmental note Dispose of packaging in an environmentally responsible manner Try to separate the packing material as much as possible for re use Environmental note Remove dead batteries in an environmentally responsible manner Find out about the local regulations 2012 The eNose company Version 0 1 The e Co amp Nose company Aerekaprobe 10 of 34 Content Content The Aerekaprobe consists of e Aerekaprobe unit with gas sensor system eNose e Mains power adapter e USB Cable e HEPA filters optional e Carbon Filter optional e Tubing and fittings optional e Remove the protecting sticky tape from the BATT switch on the front panel This is intended to secure the switch in the OFF position during transport Aerekaprobe Mains power supply USB Cable The 2012 The eNose company Version 0 1 SNose company Aerekaprobe 11 of 34 HEPA filters optional Carbon Filters optional Tubing and fittings optional 2012 The eNose company Version 0 1 SNose company Aerekaprobe 12 of 34 3 2 Aerekaprobe parts
17. ease contact The eNose Company Cleaning Outer surfaces need to be cleaned monthly NOTE When cleaning only use tap water do not use cleaning agents Remove the power supply and switch off the battery Wait at least 10 seconds to avoid possible electrostatic damage Only use a soft lint free cloth to clean the Aerekaprobe The cloth may be moistened with a little tap water Do not use cleaning agents as they might disturb the sensors Clean as often as needed ee a 2012 The eNose company Version 0 1 SNose company Aerekaprobe 26 of 34 5 4 Replacing a sensor module WARNING Always remove the power supply and switch off the battery before opening the Aerekaprobe User manual Remove the 4 screws in the corners of the front panel Watch out for the 2 small caps placed on the Pump and Sample button These are loosely attached and most likely will fall off Slide the circuit board out of the enclosure 2012 The eNose company Version 0 1 27 of 34 Aerekaprobe Locate the sensor module to be replaced and loosen the 4 screws WE ob 15ce713 ae TE 12660713 BE 6960e713 RES a i AD sl AAi t om of INALS yO NOT SHORT TERAM gt DO NOT EXPOSE TO MGN TEMP 140 FO LL VSEZ 4 W cL OTZPE A A Remove the module by lifting it straight up oe The eNose Version 0 1 2012 The eNose company company Aerekaprobe 28 of 34 ue a A huni A ns
18. er up to 15 hours of measurements and thus can be used without being connected to the Daemeter software system Once connected to the Daemeter software all measurements in the buffer will be read in by the software and the buffer emptied The buffer is Dataflash and is persistent memory Power on off states have no influence on the buffer h 2012 The eNose company Version 0 1 ra amp Nose company Aerekaprobe 16 of 34 4 2 Software 4 2 1 Installing Daemeter Start the executable Daemeter setup exe and follow the installation instructions The first time Daemeter is started a message about port usage might show especially when using Win7 This is normal and can be safely allowed Daemeter is used for 4 purposes 1 Retrieving the measurement data from the Aerekaprobe 2 Maintaining a journal regarding the measurements 3 Exporting the data for data analysis 4 Changing device settings in the Aerekaprobe All descriptions below assume that Daemeter already has been started and running at its main screen 4 2 2 Retrieving data from a Aerekaprobe Connect the Aerekaprobe to the computer running the Daemeter software NOTE Always ensure the Aerekaprobe is powered on either by mains or battery before plugging in the USB cable Devices The Aerekaprobe will show in the device list automatically All zi F4430B00 Aerekaprobes ever attached are shown in the list All currently E en
19. l Value2 Value3 Classifier 2 Valuel Value2 Value3 Defined Parameters Parameter1 Unit of parameter1 Parameter2 Unit of parameter2 Measurements 7his block is repeated for each defined measurement in the export Sample Code Sample code as defined within Daemeter Source Source as defined within Daemeter Sequence Sequence as defined within Daemeter Start Start time of the measurement date time Valve On Time the Valve switched to Sample position date time Valve Off Time the Valve switched back date time Comments All Comments entered for this measurement Classifiers Clasifier1 Value selected for Classifier1 Clasifier2 Value selected for Classifier2 Parameters Parameter1 unit parameter1 value for parameter1 Parameter1 unit parameter1 value for parameter1 Specific Journal entries 1 Journal Entries First the amount of entries is shown followed by the entries Starttime entry text of the entry Data 7his block is repeated for all sensors used for this measurement Sensor ID Identiry of the sensor Sensor Type Type of Sensor Number 0 xx 1 xx 2 xx 3 xx 4 xx Sensor Valid Indication if the sensor is still operational Based on Defect since date within Device Settings gt Sensor Timestamp of the measurement CycleID Not used with Aerekaprobe ConductivityValue01 ConductivityValue32 h 2012 The eNose company Version 0 1 Q Co amp Nose company Aerekapro
20. luences and could be useful in case of strange results NOTE Clearing the memory before a new project is only useful when another instance of Daemeter is used All data is connected to the device and will show as continuous data within Daemeter h 2012 The eNose company Version 0 1 Q amp Nose company 4 2 4 Aerekaprobe 20 of 34 Settings history Timestamp Settings 12 3 2012 9 15 AM PumpOn 1500 ValveOn 350 ValveOtt 350 Auto 0 This tab page shows all timer changes applied to the Aerekaprobe Only data with the same Valve settings may be compared Project management A project defines data belonging together and contains File View Help Project maintenance general project information and a collection of Export data measurements belonging to the project Backup database All project information can be viewed through the project LIOSse maintenance which is located within the File menu option The left side of the screen shows all defined projects When a project is selected the details of that project will be shown When starting with Daemeter the option Add project is disabled Select the entry New name fill the information and press save to store the first project After this the button will be enabled and add a New name entry to the list that can be altered and saved The Name of the project is used in the main screen where the active
21. n be changed E24C3613 Display name Type snO2 Pd 2 Defect since Clear defect since date 14 3 2012 9 11 AM n02 Pd 2 1 Ss The Display name is the name shown in the main list of Daemeter The last read date contains the most recent read data The option Defect since can be filled when the sensor does not respon normally anymore This timestamp is used when exporting the data all information measured after this date is marked as being invalid to avoid invalidating the entire measurement due to a single defective sensor 2012 The eNose company Version 0 1 a Q V we Then 2 eNose company Aerekaprobe 18 of 34 Device settings This tab page controls the operation characteristics of the Aerekaprobe Extemal ID User manual Display name Curent device time 12 16 12 22 49 13 Curerttime 12 17 12 10 48 41 Timers in seconds Fump on Valve on Valve off om Set timers Clear device memory It is advised to check the time with the same laptop each time the Aerekaprobe is attached and synchronize if needed to avoid discrepancies in the measurements NOTE The settings information is NOT available if Daemeter is retrieving the data from the Aerekaprobe Stop the reading operation before changing the settings 2012 The eNose company Version 0 1 company Aerekaprobe 19 of 34 The Aerekaprobe uses 3 different timers to ensure relia
22. nd pattern recognition software The sensors generate a complex set of measurement features which are analyzed by the recognition software and compared with known samples In this way the recognition software can qualitatively and quantitative analyze mixtures of volatile substances in air The known samples are collected during a so called calibration phase and stored for later use The Aerekaprobe in combination with the provided Daemeter software is intended to measure and archive the data the analysis part needs to be done with other software The Aerekaprobe has been specifically developed for laboratory and field use Normally a unit is fitted with sensor modules in duplicate or triplicate This allows the evaluation of the inter sensor differences and the development of sensor independent calibration models Purpose of this manual The purpose of this manual is to provide the user with information and instructions regarding the Aerekaprobe and its accompanying software Daemeter The manuals of optional parts will be enclosed as appendix if applicable The Aerekaprobe is controlled using Daemeter and some maintenance needs to be performed by the user If there are any questions left after reading this user manual or if you would like some additional information please contact The eNose Company h 2012 The eNose company Version 0 1 Q eo amp Nose company Aerekaprobe 5 of 34 1 3 Technical specifications
23. nd ensure that all instructions are understood For your personal safety it is important to understand the consequences of your actions Do not perform any actions not described in this manual Ensure the power supply is disconnected before maintenance Never open the enclosure without removing the power supply Never use alcohol or ammonia containing liquids to clean the Aerekaprobe Clean if needed with a clean soft cloth moistened with some water Contact The eNose Company if the Aerekaprobe is not functioning as intended if all instructions in this manual are observed Never place objects on top of or directly besides the Aerekaprobe Keep a clearance of 10 cm around the Aerekaprobe All inlets and exhausts need to remain clear at all times Never put anything inside the enclosure or inlets or exhausts Ensure there are no objects placed on top of the tubing or cables and that the cables are no such as to endanger people Do not use the Aerekaprobe e in a closed or badly ventilated closet e directly under or above other equipment e ona surface that blocks the Aerekaprobe Do not expose the Aerekaprobe to e rain or fluids e direct sunlight or other heat sources e magnetic objects like electrical engines transformers loudspeakers etc e severe vibration h 2012 The eNose company Version 0 1 Q eo amp Nose company 2 1 3 2 1 4 Aerekaprobe 7 of 34 Electrical safety When connecting
24. nu right button or by double clicking in the graph Both actions will locate the nearest measurement and open the measurement detail form All defined measurement will be added to the currently selected project A measurement can be added to different projects but not more than once to a specific project The project is always the currently selected active project The tab pages at the bottom contain the defined classifiers and parameters for the measurement The measurement contains 3 fields to uniquely identify the measurement within a project Froject Manual Demo project Source Patient 128 Sample Moming Sequence 1 Invalid measurement Classifiers Gender Alcohol within last ae 2012 The eNose company Version 0 1 eNose company 4 2 6 Aerekaprobe 23 of 34 Source This is the source providing the sample for example a patient or product Sample ID Required field unique sample code or sample from this source Sequence Can be used if a sample is measured more than once Remark Free text field where anything that could be of interest can be inserted Invalid Measurement Use this checkbox to mark this measurement as invalid This can for example be caused by external influences or sensor failure The data is exported but with the Valid value set to false so it can be identified when working with the data in another program If an experiment is defined an indicator will be visible on the to
25. or using electrical equipment general safety must always be observed to reduce the risk of fire electric shock and personal injury When connecting and disconnecting always beware of ESD Electrostatic Discharge Never touch connector pins with unprotected skin The unit uses a backup battery to work without power supply It can be operated for more than 3 hours on this battery For the real time clock an independent rechargeable battery is used Radiation No radiation emitting components are used in the Aerekaprobe 2012 The eNose company Version 0 1 6 Sem Q V company Aerekaprobe 8 of 34 2 2 Notation of the safety information In this user manual blocks of text are indicated with a certain symbol The symbols used are the following LIFE THREATENING Life of the user is in immediate threat WARNING User can serious injure themselves or seriously damage the product Warning indicates harm to user or product if the user does not follow the procedure carefully CAUTION Product may be at risk Caution indicates damage to the product if the user does not follow the procedure carefully NOTE Note with additional information for the user A note alerts the user to possible problems Environmental note Note with additional information which the user makes them aware of instructions and rules to protect the environment 2012 The eNose company Version 0 1 SNose
26. p part of the graph Lab journal Daemeter contains the option to add a so called journal entry A journal entry is only related to a point in time and not to a specific device or measurement If something occurs that could affect all data collected e g dropping a bottle of alcohol somewhere in the room A journal entry can be entered by clicking in the lower part of the graph The position of the cursor in relation to the time shown on the x axis determines the time of the event 20 Joumal 12 07 12 Project Device Time 10 20 Remark All known Projects Devices and Sensors aer shown in the dropdown lists and can be used to delimited the scope of the information If an journal entry is defined an indicator will be visible on the bottom part of the graph 2012 The eNose company Version 0 1 SNose company 4 2 7 4 2 8 Aerekaprobe 24 of 34 Exporting data The data can be exported to either a generic CSV file format or a binary file that can be read by the Aethena software The content of both files are equal The data can be exported by selecting the export data option in the File menu This will open an export data dialog Monday December 03 2012 Monday December 03 2012 Export location Aethena export In this dialog box the project to be exported needs to be selected together with the period of which the data needs to be exported Select the export location and click Ok The export will
27. project is displayed and for the filename of an export The description field is only shown here and it is also part of the data export The start and end date can be filled for administrative purposes These are also used to select the initial setting for a data export Within each project classifiers or other information can be assigned to each measurement The classifiers are shown when adding a measurement and are unique for each measurement Most common classifier is the absence or presence of the condition being measured The list can be filled with all information needed the sequence defined in this list is the same sequence shown when a measurement is defined There are two kinds of information that can be defined within a project classifiers and parameters A classifier is a variable with a pre defined list of possible values while a parameter is a variable that can take any value h 2012 The eNose company Version 0 1 Q Co amp Nose company Aerekaprobe 21 of 34 A classifier is added by selecting the project classifiers tab and pressing the left O Add for example Gender Condition Diagnose Alcohol Smoker After the classifiers are added the possible values can be added by selecting the desired classifier for example Gender and filling the right sided list with the allowed values by clicking the right O for example Female and Male Classifiers and values can be altered by
28. s When oxygen adsorbs and or ionizes at the sensor surface the conductivity is low Removal of oxygen due to reaction with other substances redox reaction results in a measurable change of conductivity The change in conductivity is governed by the sensor material metal oxide type and catalyst sensor temperature dynamics and the chemical reaction rates The latter is determined in turn by the chemical concentrations related to the adsorbtion desorbtion rates and the surface temperature reaction rate Features for pattern recognition are generated by recording the conductivity as function of the temperature dynamics This is illustrated in the figure below Temperature Respons K A IIIN IPA MEA NH3 Butanol Blanc Principle of thermal modulation The isolated heater is modulated and the response of the sensor to ambient volatiles is recorded as function of this temperature The time scales of lower and upper graphs are the same 2012 The eNose company Version 0 1 eN company Aerekaprobe 30 of 34 In further use the data is normally visualized as series of one full period in a so called thermal loop Examples of these thermal loops taken from the same data as in the previous figure are given in the figure below Normalized response Cycle temperature Blanc Ethanol MEA MMA NH3 H2S Response plotted as function of
29. s connected Aerekaprobes are marked with a green dot Select the desired device and the Start Reading button is _ enabled When this button is pressed all new data will be read C Devicesettings from the device The first time an Aerekaprobe is attached there will be no sensors in the device list After the first data is retrieved the sensors will be shown automatically QS The 2012 The eNose company Version 0 1 SNose company 4 2 3 Device settings Aerekaprobe 17 of 34 Select the connected device and press the Device settings button This will open the dialog screen Extemal ID 3BCE1503 Display name Manual Demo Description Device used for manual images Device connected and reading data Last read 12 3 2012 9 12 AM 12 3 2012 9 13 AM 12 3 2012 9 12 AM 12 3 2012 9 13 AM 12 3 2012 9 12 AM 12 3 2012 9 12 AM 12 3 2012 9 12 AM 12 3 2012 9 12 AM 12 3 2012 9 12 AM 12 3 2012 9 12 AM 12 3 2012 9 12 AM The display name is the name shown in the Daemeter list instead of the default ExternalID The description field is only shown and used in this screen In the lower section 3 tab pages with additional information can be found Sensors This tab page contains all information about the sensor placed inside the Aerekaprobe both currently placed and previously placed When double clicking on a specific sensor the information about hat sensor ca
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