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I. Labeled Instrument Photos

Model AQSync Air Quality Monitoring Station Manual Rev. A-1

Instrument Schematics and Photos

Figure I.1.

Schematics of the AQSync’s Sample Flow (top) and Data Flow.

Summary of Contents for AQSync

Page 1: ...on Manual Rev A 1 i AQSync Air Quality Monitoring Station 2B Technologies OPERATION MANUAL Model AQSync Copyright 2021 2B Technologies All rights reserved Technical Support twobtech com tech support html techsupport twobtech com 1 303 273 0559 ...

Page 2: ... the Touchscreen 3 A 1 2 2 Accessing AQSync Data via the Web and via USB 3 A 2 1 3 Schematics of the AQSync s Sample Flow and Data Flow 4 A 2 This User Manual 5 B Assembly and Installation of the AQSync 6 B 1 Assembly 6 B 1 1 Install PM Sampling Inlet 6 B 1 2 Install Weather Station 9 B 2 Physical Installation 10 B 2 1 Placement 10 B 2 2 Secure the AQSync 10 B 2 3 Orient the Wind Sensor 10 B 3 Dim...

Page 3: ...nd Sensor Outputs 20 C 7 AQSync Time and Date 21 D Data Access and Control 22 D 1 Web Access 22 D 2 USB Access 26 E Settings 27 E 1 NOx Module Settings 27 E 1 1 Adaptive Filter 27 E 1 2 NO Calibration and NO2 Calibration Parameters 28 E 1 3 Flow Calibration Parameters Cell Ozone Flows 28 E 2 CO2 Module Settings 28 E 2 1 Output and Calibration 29 E 2 2 Zeroing 29 E 3 Ozone Module Settings 29 E 4 CO...

Page 4: ...eplacement of Ozone Measurement Scrubber 43 H 1 3 Replacement of NOx and Ozone Inlet Filters 43 H 1 4 Replacement of PM Pump Filter 44 H 1 5 Replacement of the CO CO2 Inlet Filter 44 H 1 6 Replacement of NOx Instrument LED 45 H 1 7 Summary of Maintenance Recommendations 45 H 2 Troubleshooting 47 H 2 1 Overall System Checks 47 H 2 2 Ozone Module Troubleshooting 47 H 2 3 NOx Module Troubleshooting 4...

Page 5: ... Station Manual Rev A 1 v IDENTIFICATION RECORDS Record the following information for future reference Unit serial number ______________________________________ Warranty start date _______________________________________ date of receipt ...

Page 6: ...modifications of the text Revision A 1 December 2021 TRADEMARKS PATENTS 2B Technologies 2B Tech 2B AQSync and AQSync Air Quality Monitoring Station are trademarks of 2B Technologies CONFIDENTIALITY The information contained in this manual may be confidential and proprietary and is the property of 2B Technologies Information disclosed herein shall not be used to manufacture construct or otherwise r...

Page 7: ...reply please click on the Ticket link provided to continue to communicate with us directly over the internet The web ticket approach to customer service allows us to better track your problem and be certain that you get a timely response We at 2B Tech pride ourselves on the excellent customer service we provide You may also contact us by email at techsupport twobtech com or by phone at 1 303 273 0...

Page 8: ...ein are the Customer s sole and exclusive remedies In no event shall 2B Technologies be liable for direct indirect special incidental or consequential damages including loss of profits whether based on contract tort or any other legal theory The AQSync Air Quality Monitoring Station manual is believed to be accurate at the time of publication and no responsibility is taken for any errors that may ...

Page 9: ...ARNHINWEIS Vor dem Öffnen des Gerätes Netzstecker ziehen WARNHINWEIS Dieses auf dem Gerät weist darauf hin dab der Anwender zuerst das entsprechende Kapitel in der Bedienungsanleitung lesen sollte WARNHINWEIS Wenn das Gerät nicht wie durch die Firma 2B Technologies USA vorgeschrieben und im Handbuch beschrieben betrieben wird können die im Gerät eingebauten Schutzvorrichtungen beeinträchtigt werde...

Page 10: ...that came with the AQSync Air Quality Monitoring Station If the AQSync Air Quality Monitoring Station must be returned to the factory pack it in the original carton Any repairs as a result of damage incurred during shipping will be charged Shipping Box Contents Open the shipping box and verify that it contains all of the items on the shipping list If anything is missing or obviously damaged contac...

Page 11: ...nc can be installed at any location where line power is accessible for example on a light post or building or at field sites The AQSync integrates sensors such as those used in the 2B Technologies Personal Air Monitor PAM with the FEM quality ozone measurements of the 2B Technologies Model 108 L Ozone Monitor the FEM quality NO2 measurements of the 2B Technologies Model 405 nm NO2 NO NOx Monitor i...

Page 12: ...et One 83214 AQ Mass Profiler 0 320 000 particles L 10 CO Amperometry Alphasense CO A4 0 50 ppm 0 1 ppm VOCs Photoionization Detection ION Science MiniPID2 HS 0 3 ppm 0 5 ppb det lim T contact R M Young Company R M Young Company ResponseONE 92000 Weather Transmitter 40 60 C 0 3 C 20 to 50 C 0 7 C other P contact R M Young Company R M Young Company ResponseONE 92000 Weather Transmitter 500 1100 hPa...

Page 13: ...ode for use of the AQSync The upload frequency of the measurements is set at a default value of 5 minutes at the factory However if desired this setting can be changed by the user in the instrument s touchscreen menu Shorter times are not generally recommended because of prohibitive cellular costs Each data line contains the chemistry measurements ozone NO NO2 NOx CO CO2 PM1 PM2 5 PM10 meteorologi...

Page 14: ...A Overview Model AQSync Air Quality Monitoring Station Manual Rev A 1 4 A 2 1 3 Schematics of the AQSync s Sample Flow and Data Flow ...

Page 15: ...allation of the AQSync C Quick Start Initiating Measurements with the AQSync D Data Access and Control E Settings F Parameters and Graphing Screens G Calibration and Zero Checks H Maintenance and Troubleshooting Sections I through L of the manual contain labeled instrument photos a list of spare parts and a service log for your recordkeeping The Appendix gives more detail about the individual comp...

Page 16: ...them from damage Carefully unpack them and install them as shown here B 1 1 Install PM Sampling Inlet Obtain the pieces of the Particulate Matter Sampling Inlet as shown below After following these steps the PM Inlet will be installed as shown in the picture at the right The AQSync has an aluminum flange on the top as shown at right The PM Inlet is installed into this flange Final Install Core Shi...

Page 17: ... mounted inside the AQSync Twist and push the Core through the o ring that is inside the receptacle until it seats against the bottom of the receptacle The PM measurements will only be valid if the Core is sealed with the o ring and seated properly C Insert the Shield Assembly over the Core and down over the o ring on the flange Rest it on the aluminum flange D Line up the holes in the Shield and ...

Page 18: ...internal o ring that is inside the Inlet Cover G The assembly is now complete except for attaching the wires of the Core At this point the wires from the Core should be dangling loose inside the AQSync Near the back of the AQSync you should see two other disconnected wires inside the AQSync that mate to these connectors One is a 3 pin connector and the other is a 4 pin connector Match them up with...

Page 19: ...allation of the wind sensor please consult the manufacturer s manual posted on our server and linked here https twobtech com pdf AQSyncInstruments WeatherTransmitter_ResponseONE_92 000 pdf Slide into metal fitting Use a hex wrench to secure it with the 2 set screws Plug in as shown Note that when the AQSync is installed in its measurement location the weather station s marker must be oriented to N...

Page 20: ...tech com pdf AQSyncInstruments WeatherTransmitter_ResponseONE_9 2000 pdf B 2 2 Secure the AQSync We recommend that the monitor be mounted on a post wall or specially built stand The back of the enclosure has three holes along each of the vertical sides that can be used for mounting The holes are 1 4 in diameter and should be used with stainless steel bolts and washers The dimensional drawings are ...

Page 21: ...B Assembly and Installation Model AQSync Air Quality Monitoring Station Manual Rev A 1 11 B 3 Dimensional Drawings Front View Back View ...

Page 22: ...B Assembly and Installation Model AQSync Air Quality Monitoring Station Manual Rev A 1 12 Side and Top Views ...

Page 23: ... C each time you power up the AQSync Below is a summary of the minimum steps for startup and use that are further described in this Section C If the AQSync is deployed at a fixed installation site steps 6 and 7 will most likely not need to be repeated each time the AQSync is powered up Startup Checklist 1 Connect power cable and turn on the AQSync 2 Allow 30 minutes for warmup and battery charging...

Page 24: ...touchscreen The WiFi status if available is also indicated above the cellular status C 2 Warmup and Battery Charging The warmup status for each measured species is shown on the left side of the main screen When warming up the species button is shown in blue When ready the species button is shown in green as shown in the screen above A yellow button indicates that there is an error or process in pr...

Page 25: ...s The screen will read zeroes for NO2 NO and NOx during this period C 2 3 CO2 The CO2 instrument requires about 30 minutes of warmup to achieve thermal stability and to cycle through some automated zeroing checks C 2 4 CO In a typical configuration of the AQSync there are 2 identical CO sensors The measured value of CO shown on the touchscreen and found in the data stream is the average of the 2 s...

Page 26: ...e and become ready for data communication Summary Allow 30 minutes of warmup to ensure that the full measurement suite of the AQSync is valid The data communication battery also charges during warmup C 3 Real Time Data Viewing on the Touchscreen C 3 1 Main Screen Users can view the AQSync data on the Main screen of instrument s touchscreen Each measured species in the chemistry suite can be viewed...

Page 27: ...te and in Appendix 1 gives more detail about the NOx instrument and the interpretation of this information The information given in the Parameters screen varies for each measured species This information can be useful for diagnosing any issues that might be occurring with the instrument The Troubleshooting section of this manual Section H 2 describes the Parameters screens Also refer to the user m...

Page 28: ...ted by the user if necessary to be within the specified ranges To do this follow the flow rates on the touchscreen by selecting Parameters and then NOx The Cell Flow should be in the range 1400 1600 cm3 min Use a small flathead screwdriver to adjust the flow using the needle valve located on the left lower corner of the NOx instrument s bottom panel The Ozone Flow should be in the range 60 80 cm3 ...

Page 29: ...your preferred method of data communication NOTE The password for accessing the System Settings menu is password This can be reset see Section E 7 10 of this manual A dropdown menu in the middle of the Upload Settings screen enables you to choose between WiFi only Cellular only WiFi prioritized or Cellular prioritized Due to cost savings WiFi is the preferred method of communication if available B...

Page 30: ... Settings shorter than 5 minutes would have prohibitive cellular costs The upload frequency can be changed by the user by accessing Settings System Settings Upload Settings on the touchscreen NOTE The password for accessing the System Settings menu is password See Section E 7 10 of this manual if you wish to change the password The frequency of the uploads can be specified by tapping on the Upload...

Page 31: ...nstrument sensor output options factory settings and user options Parameter Measurement Frequency AQSync Output Factory Setting Output averaging Options for User O3 and VOCs 2 sec 10 sec none NO2 NO NOx 5 sec 5 sec none CO 3 7 sec 3 7 sec none T P RH 1 sec 5 sec none CO2 1 sec 1 sec 1 to 36000 sec PM 1 sec 10 sec 1 to 3600 sec Use the Settings menu if you wish to use different settings for the PM ...

Page 32: ...can be accessed for analysis on the web This integrated web based data stream is the primary data acquisition mode for use of the AQSync The raw data files from the individual modules of the AQSync are also stored locally on the AQSync s Raspberry Pi computer These individual files can be downloaded using the USB connection to the right of the touchscreen D 1 Web Access The data dashboard is acces...

Page 33: ...will see a display of your devices identified by their serial numbers and their locations on a map The on off status of the devices is shown in green red Yellow indicates there is likely an issue with one or more of the AQSync s modules Click on a device to see its current data Most recent 5 minute upload values ...

Page 34: ... is not fully operational at this time The upper right portion of the screen gives a graph of the data In the upper right corner of the dashboard click on the download button and choose a date range for the csv file that will be created Use the gray menu bar above the graph to zoom in out move the screen to show different areas of the data and choose to save the plot as a png In the legend click o...

Page 35: ...re largely self explanatory A few clarifications are given below id This is a database identifier number Normally not needed by the user device_timestamp The time data were acquired For user data analysis server_timestamp The server time for the upload Used by 2B Tech for diagnostics upload ip Used by 2B Tech for diagnostics ...

Page 36: ...of quickly changing air quality conditions They are also useful for periods in which cellular service or WiFi are not available A separate data file is made for each of the instruments of the AQSync and a new data file is created for each day that the AQSync is powered on Please see Section E 7 9 for information on accessing these files through the Settings System Settings Data File menu An exampl...

Page 37: ... Model 405 nm user manual is linked at the bottom of that webpage This instrument uses absorption principles and Beer s Law to measure NO2 and measures NO by conversion to NO2 The basics of the AQSync s settings for this instrument are given in this section In the AQSync the NOx instrument is set to 5 second measurements and the measurement mode gives all three measurements NO2 NO and NOx This mea...

Page 38: ...on each value and use the popup keyboard to enter the desired value Tap Apply and then Save when all four desired values are entered To disable the adaptive filter set the short filter length to 1 the difference to 0 and the percent to 0 E 1 2 NO Calibration and NO2 Calibration Parameters The NO2 NO NOx instrument is calibrated at the factory where slope and offset parameters for NO2 and NO are en...

Page 39: ... the zero is pre set in the AQSync The factory settings are for zeroing every 6 hours for a duration of 40 seconds Shorter times between zeroing and or longer durations of zeroing would exhaust the module s soda lime scrubber too quickly See the manufacturer s document linked here and in Appendix 1 for more information E 3 Ozone Module Settings The ozone instrument in the AQSync is based on 2B Tec...

Page 40: ...uld only be needed if a new calibration is carried out by the user or during factory servicing E 5 Weather Transmitter Settings The offsets for temperature pressure humidity and wind direction can be specified using the Weather Transmitter Settings screen In the AQSync the factory settings are 0 for all offsets The following parameters of the Weather Transmitter are pre set when the AQSync is ship...

Page 41: ...r The K Factors are only valid at the same site and for the same particulate type If the local particulate source changes the K Factors may no longer be valid As shipped the AQSync has K Factors appropriate for the Denver Colorado USA area The user should determine the appropriate K Factors for their sampling location and adjust accordingly See the manufacturer s document linked here and in Append...

Page 42: ...ed that you know the correct DNS and router for your network Although most users don t need static IP addresses they normally matter more when external devices or websites need to remember your IP address Click on the address areas and enter your Static IP Router DNS values in the screens that pop up Press Apply when ready in each case and then Save when you return to the Static IP screen Warning ...

Page 43: ...ork for your data uploads This works in conjunction with the Uploads Settings screen which enables you to select whether Wi Fi or Cellular is used or to prioritize one of these Adjustments should be made prior to beginning a measurement period See Section C 5 for the description of this setting E 7 6 Power Settings Here the whole system or individual components of the system can be turned on or of...

Page 44: ...he upload frequency The most cost effective and generally the most stable choice for uploads is WiFi The AQSync can be set to prioritize the use of WiFi in which case it will use the WiFi network that has been specified in System Settings WiFi Settings see Section E 7 5 above whenever that network is available The AQSync can also be set to exclusively use WiFi i e never use cellular for uploads Th...

Page 45: ...fresh A green message then will appear saying the USB is connected The Select button leads to the File Select menu which enables you to choose all files just the current day s files or to browse files The selected files can be Saved only if a USB stick is connected E 7 10 Password This screen sets the password for entering the Settings menu By default this password is set to password when the inst...

Page 46: ...osing instrument performance issues Please refer to the Troubleshooting section of this manual Section H 2 or the individual instruments manuals linked in Appendix 1 for more information about the parameters shown for each instrument F 2 Graphing Graphing screens are available for real time viewing of the data associated with any of the measured species of the AQSync Blue buttons remove legend and...

Page 47: ...e to check the box Show on graph and then select Apply for each variable you want to display left screen below When you Close and return to the main graphing screen select Ozone from the dropdown menu to display what you have selected right screen below Multiple variables can be selected to appear on the graph simultaneously In the example below both Ozone and Cell Temperature have been selected D...

Page 48: ...ality Monitoring Station Manual Rev A 1 38 Range Specify the range of the x and y axes Minimum and Maximum values for x and y can be specified or auto ranging can be chosen Zoom In Zoom Out Change the viewing level Reset Return to default settings ...

Page 49: ...ctory Calibration recommendations are given in the table in Section H 1 7 If desired the user can carry out calibrations for the various instruments in the AQSync A field calibration of the NOx and ozone modules is recommended at 6 months of operation Please see Appendix 3 for more information on carrying out calibrations G 2 Zero Checks Zero checks can be carried out if convenient either periodic...

Page 50: ...iginal plumbing connection to the sampling bulkhead on the AQSync G 2 2 CO2 Instrument The CO2 instrument is the PPSystems SBA 5 CO2 Gas Analyzer link to user manual in Appendix 1 The CO2 instrument has a built in zeroing system and periodically carries out a zero including at startup From the main screen click on CO2 Status to view whether the zero is occurring The frequency of the zeroing is set...

Page 51: ...e other source of a leak or a malfunction of the Met One instrument is indicated G 2 4 CO Sensor The CO sensor is an Alphasense Model CO A4 For the highest data quality quarterly zeroing is recommended Zeroing requires a stream of air that is both CO free and humidified G 2 5 NO2 NO NOx Module The electronic zeros for NO2 and NO are tested by introducing NOx free air to the analyzer The NOx free a...

Page 52: ... and ambient CO2 concentrations of 400 ppm replacement is recommended every 6 months If ambient CO2 levels start to consistently go below 400 ppm replacement of the soda lime is indicated No tools are needed to access the CO2 scrubber housing and replace the CO2 scrubber 1 Disconnect the inlet and outlet lines from the white barb fittings shown by the red arrows Make note of which line was to the ...

Page 53: ... is available for purchase from 2B Technologies In Section I of this manual see Figure I 4 for its location on the ozone module Contact 2B Technologies for information on accessing this scrubber filter assembly H 1 3 Replacement of NOx and Ozone Inlet Filters The inlet filters of the NOx and ozone modules should be replaced if the flow rate is declining or if visible contamination is present Frequ...

Page 54: ...all of the AQSync H 1 4 Replacement of PM Pump Filter It is recommended that the filter of the PM instrument pump be replaced quarterly Twist open the filter housing which is easily accessible from the front of the AQSync Use a wide flathead screwdriver to loosen it if necessary Replace the round cylindrical filter and reassemble H 1 5 Replacement of the CO CO2 Inlet Filter The green inlet filter ...

Page 55: ... the NOx instrument is threaded into the bottom hole of the stacked endcap of the instrument s cell It is recommended that this LED be replaced annually When the LED is replaced recalibration of the NOx instrument is necessary H 1 7 Summary of Maintenance Recommendations The next page gives a recommended schedule of maintenance and calibration for the AQSync ...

Page 56: ...H Maintaining and Troubleshooting the AQSync Model AQSync Air Quality Monitoring Station Manual Rev A 1 46 Table H 1 Maintenance Calibration Schedule ...

Page 57: ... diagnostic of pump failure Normally the ozone pressure reading will be below ambient by 10 mbar or more However if the pump is failing the pressure will be about the same as ambient Therefore compare the ozone cell pressure readout Ozone Parameters screen to the readout of ambient pressure given by the weather transmitter access from the Home screen Lamp Failure The ozone measurements will be err...

Page 58: ...ent scrubber is contaminated Flow path is contaminated Solenoid valve is contaminated and not opening and closing properly Air pump for CO2 O3 CO is not drawing sufficient flow ozone cell pressure is not 10 20 mbar lower than ambient pressure Replace the ozone inlet filter and return the ozone module to 2B Tech for exchange Contact 2B Tech Power off open AQSync and unplug pumps P1 and P2 Turn inst...

Page 59: ...ng then the air pump motor is burned out and shorting Replace air pump Cell temperature reads low by several 10 s of degrees Absent or loose connection of temperature probe cable to circuit board Remove module cover and reattach connector to circuit board Readings are noisy with standard deviations much greater than 3 ppb using 5 second averaging LED output is weak Excessive vibration Flow path co...

Page 60: ...llowing tables list the hexadecimal codes and their corresponding error definitions The first table lists the errors if there were only one error while the second table lists all of the possible error combinations with their definitions Single Errors Error byte Definition 00 No errors 08 Scrubber temp out of range Temp is either 113 degrees or 110 80 Pressure control out of range by 1 mbar 04 Cell...

Page 61: ...enerator Voltage AA Scrubber Temp Pressure Control Cell Voltage and Ozone Generator Voltage AC Scrubber Temp Pressure Control Cell Flow and Ozone Generator Voltage AE Scrubber Temp Pressure Control Cell Flow C0 Pressure Control and Ozone Flow C2 Pressure Control Ozone Flow and Cell Voltage C4 Pressure Control Cell Flow and Ozone Flow C6 Pressure Control Cell Flow Ozone Flow and Cell Voltage C8 Scr...

Page 62: ...lues say 60 000 The AD values are diagnostic of the lamp and detector status Declining or zero values would indicate an aging detector and or lamp The manufacturer states that the infrared source should last for at least 2 years depending on use Erratic values could indicate a dirty inlet filter Replace the green inlet filter quarterly or more often if sampling very dirty air H 2 5 PM Module Troub...

Page 63: ...e ozone monitor includes cleaning of the entire flow path with methanol testing of all components for proper function installation of a new internal ozone measurement scrubber and calibration against a NIST traceable standard 2B Technologies also offers calibration and service for the sensors The best way to contact us for service is to log a customer service ticket at https twobtech com tech supp...

Page 64: ...I Labeled Instrument Photos Model AQSync Air Quality Monitoring Station Manual Rev A 1 54 I Instrument Schematics and Photos Figure I 1 Schematics of the AQSync s Sample Flow top and Data Flow ...

Page 65: ...ng Station Manual Rev A 1 55 Figure I 2 Overview of the AQSync Air Quality Monitoring Station outside views Weather Station Connection Power Cord Inlet for O3 CO CO2 VOCs Inlet for NOx Vent Weather Station Particulate Matter Sampling Inlet NEMA Enclosure Fan Vent ...

Page 66: ...strument Photos Model AQSync Air Quality Monitoring Station Manual Rev A 1 56 Figure I 3 Overview of the AQSync Air Quality Monitoring Station inside view NO2 NO NOx Ozone behind screen PM behind screen CO VOCs CO2 ...

Page 67: ... Tubing Connection to Pressure Sensor Lamp Glow 5 V Regulator Cell Heater Connector Lamp Connector Air Outlet top Pin 1 11 to 24V Pin 2 Ground input Pin 3 RS232 Transmit Pin 4 RS232 Receive Pin 5 Ground Pin 6 Voltage Out Pin 7 Current Out Pin 8 Ground Pin 9 N A Pin 10 N A Temperature Sensor Connector Relay Pin 1 NC Relay Pin 2 Common Relay Pin 3 NO Indicator LEDs Ozone Measurement Scrubber Particl...

Page 68: ...ber NO2 Exhaust Scrubber DB25 Assembly LED Driver Board Main Circuit Board Optical Bench is underneath circuit board shelf Inlet Barb Bulkhead Outlet Barb Bulkhead Power Board NO2 Scrubber for O3 Generator Inlet Photolytic O3 Generator Reaction Coil Nafion Assembly O3 Flow Meter DB25 Assembly Ozone Lamp Inverter Heated NO2 Scrubbers NOx Solenoid Valve Ozone Solenoid Valves Inlet Bulkhead ...

Page 69: ...Quality Monitoring Station Manual Rev A 1 59 Figure I 6 Optical Bench of the NOx Instrument in the AQSync Shown during assembly without all final installations Cell tubes LED light source Lens tube and photodiode Cell inlet top and outlet ...

Page 70: ...eplacement Parts Please contact us to discuss your needs for replacement modules and spare parts for the AQSync Our online ticketing system is accessible at www twobtech com tech support html Via email please contact us at sales twobtech com Via phone please contact us at 1 303 273 0559 ...

Page 71: ...ir Quality Monitoring Station Manual Rev A 1 61 K Service Log 2B Tech Model __AQSync Air Monitor AQSync Serial _________ Date Module Serviced or Exchanged Description of Service note old and new serial numbers if applicable Notes ...

Page 72: ...K Service Log Model AQSync Air Quality Monitoring Station Manual Rev A 1 62 Date Module Serviced or Exchanged Description of Service note old and new serial numbers if applicable Notes ...

Page 73: ...light scatter particle detection using a laser diode Met One 83214 AQ Mass Profiler 0 320 000 particles L 10 CO Amperometry Alphasense CO A4 0 50 ppm 0 1 ppm VOCs Photoionization Detection ION Science MiniPID2 HS 0 3 ppm 0 5 ppb det lim T contact R M Young Company R M Young Company ResponseONE 92000 Weather Transmitter 40 60 C 0 3 C 20 to 50 C 0 7 C other P contact R M Young Company R M Young Comp...

Page 74: ...rs screens of the AQSync Ozone https twobtech com model 108 l html NO2 NO NOx https twobtech com model 405 nm nox monitor html CO2 https twobtech com pdf AQSyncInstruments CO2_Instrument_PPSystems_SBA 5 pdf CO https twobtech com pdf AQSyncInstruments CO_Alphasense_CO A4 pdf VOCs https twobtech com pdf AQSyncInstruments VOCs_IONScience_MiniPID2 HS pdf Particulate Matter https twobtech com pdf AQSyn...

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