Aeroqual AQS 1 User Manual Download

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Aeroqual Dust Sentry / AQS User Guide

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Summary of Contents for AQS 1

Page 1: ...MRK D 0048 V4 Aeroqual Dust Sentry AQS User Guide Page 1 ...

Page 2: ... www aeroqual com Aeroqual s training website contains a comprehensive document library of technical notes and service and calibration templates to download and print The training website has detailed descriptions of service activities and calibration and installation examples and is updated regularly Video tutorials are featured heavily www training aeroqual com To receive access contact technica...

Page 3: ...ence 18 3 4 Safety 19 4 Connectivity 20 4 1 Aeroqual Connect via Direct WIFI LAN 20 4 2 Aeroqual Cloud via Network WIFI Modem 21 4 3 Communication settings 25 4 4 Resetting the communication settings back to factory settings 26 5 Operation 27 5 1 Manage Data 27 5 2 Calibration and Service 29 5 3 Configure Instrument 29 5 4 Diagnostics and Advanced 30 5 5 Administration 31 6 Service Maintenance 32 ...

Page 4: ...y AQS User Guide Page 4 8 Troubleshooting 60 9 Copyright 62 10 Compliance 62 11 Warranty 62 12 Appendix 63 12 1 Gas module design 63 12 2 Particulate Matter module design 65 12 3 Mains wiring color guide 67 12 5 Calibration Records 68 ...

Page 5: ...ed lockable weatherproof IP 65 enclosure the monitors include an embedded PC and full software system for remote technical support data management and analytics Users can make use of the embedded PC running proprietary Aeroqual Connect software or optional web based Aeroqual Cloud software for data storage and management of networks of monitors Figure 1 1 Key components Gas sampling inlet AQS only...

Page 6: ... continuously and in real time The Dust Sentry is a nephelometer based monitor that delivers defensible and accurate mass measurement for PM10 PM2 5 PM1 or TSP MCERTS certified and SCAQMD 1466 pre approved For more detail see https www aeroqual com product dust sentry pm10 monitor Applications for Dust Sentry Pro Designed for those who need to monitor and manage multiple outdoor dust and particle ...

Page 7: ...nclosure The external sensors below are available factory tested and ready to connect to the monitors MetOne MSO weather station Cirrus MK427 noise meter Vaisala WXT536 weather station Gill Instruments Windsonic Li Cor LI 200 Pyranometer See Section 2 6 1 for wiring external sensors 1 5 Dimensions These dimensions are for a visual representation only for full details see section 1 6 Specifications...

Page 8: ...000 0 5000 0 5000 Yes Accuracy 2 μg m3 5 of reading 5 μg m3 15 of reading Resolution 0 1 μg m3 0 1 μg m3 MCERTS certified Yes No SCAQMD Rule 1466 Pre approved No Auto zero check Yes No Sample flow 2 LPM 1 LPM Connect Cloud software Yes Yes Factory calibration interval 24 months 12 months Operating temperature 10 C to 50 C 14 F to 122 F 10 C to 45 C 14 F to 122 F Heated inlet Yes Yes Yes Power cons...

Page 9: ...sites will require a way of securely mounting the monitor Pole Brackets 50 8 mm 2 304 Stainless U Bolt are included to mount the monitor on a pole anchored to the ground Small platforms have also been used successfully too If you have ordered Auxiliary sensors Weather noise etc you will need to provide a means of mounting these also You will need to supply a pole and fixings to mount the sensor Si...

Page 10: ...al auxiliary sensors If you have purchased any auxiliary sensors Weather Noise mount these and run the cabling through the external glands and connect to the AUX module Section 2 6 7 Document setup in Journal Note in the Journal that commissioning is complete Exit Service mode Section 6 4 Section 5 1 Installation and commissioning Commissioning is the process of setting up a new monitor to work co...

Page 11: ...rewdriver and if you have an external sensor you will also need a small flat blade screwdriver There is no software to download and install and no cables are required for communication Communication to the monitor is through your web browser on your laptop tablet or smart phone using WIFI If you have purchased a MOXA modem this needs a local SIM dynamic IP same as you would have in your smart phon...

Page 12: ...luding L R inlet tube cyclone adaptor cyclone TSP head Attach PM inlet Turn off power to the monitor during this process by pulling out the 12 DC fuse as show in Figure 2 8 If not already fitted attach a PM inlet O ring to the aluminium retaining ring and apply a small amount of lubricant Figure 2 2 Add the O ring and a small amount of lubricant Inside the sampling inlet assembly has a sampling tu...

Page 13: ...cable and over the particle engine mounting bracket on the left The aluminium tube must push all the way into the PM module IMPORTANT Ensure sure that the aluminium inlet tube is pushed all the way into the optical engine block If the aluminium tube does not fully push down in to the optical engine block then create more length in the aluminium tube by removing the grey retaining nut and then slid...

Page 14: ...luminium retaining ring Push the fuse holder in to the On position to begin flowing air through the inlet Then perform a leak check and flow check See Section 6 5 6 and 6 5 7 Figure 2 6 During field installation secure the PM inlet using the retaining screws and plug in the heater Attach gas inlet AQS Only Figure 2 7 L R Dust Sentry Dust Sentry Pro come with insert AQS supplied with Swagelok fitti...

Page 15: ...source Occasionally mains AC power is not available at the site where the Monitor is installed and an alternative power solution is required More detailed information is in a Technical Note for remote powering the monitors available from https www aeroqual com support technical documents Wiring the power supply connector 1 Locate the power connector terminal which is situated outside the enclosure...

Page 16: ...e cable through the gland External sensors such as weather stations and noise meters need to be wired to the green connector plug on the front of the auxiliary module To connect third party sensors such as weather sensors feed the cable through a free cable gland and wire to the green plug AUX module An AUX module is used to provide power to an external sensor and to process data from the sensor T...

Page 17: ...ry module orientation may vary observe the correct numbering order as labelled on the green connector Gill Ultrasonic Wind Sensor Cirrus MK427 Noise Sensor Vaisala WXT536 Weather Sensor Met One MSO Weather Sensor Novalynx Silicon Pyranometer Online reference training aeroqual com DM 1 3 Tech training Section 2 3 ...

Page 18: ... used to secure the bottom bracket 3 2 Inlet height If monitoring is related to human exposure the sampling inlet height should be positioned in the breathing zone This is located between 2 and 15 meters above ground level If monitoring is related to specific emission sources the position of the sampling inlet can be more flexible It is more important that there is no obstruction between the appro...

Page 19: ...ad works etc can significantly affect the data Ensure a record of such events is kept to account for unexpected peaks in concentration 3 4 Safety The intended data capture rate should be considered when positioning the monitor If data capture above 90 is essential the unit should be located in an area which has 24 hour access available The positioning should allow for routine maintenance checks to...

Page 20: ...ta belongs to you We look after it in the same way that a bank looks after your money Who you let access your data is entirely up to you our job is to carry out your instructions If you do choose to store data with us then here are some of the security assurances we provide We use only ISO 27001 approved data centres Infrastructure is monitored and protected 24 7 Data is accessed via a secure webs...

Page 21: ...settings and how long you take to enter complete the steps above your device may reconnect to the previous WIFI connection After logging in to Aeroqual Connect you will be presented with a screen with five apps Manage Data Calibration and Service Configure Instrument Diagnostics and Advanced and Administration You are now accessing your monitor in Access Point mode Next open the Administration app...

Page 22: ...e added to a LAN in two ways The WIFI function of the monitor is used to connect to a WIFI network that is connected to the internet An Ethernet cable is used to connect the monitor to router that is connected to a LAN When this happens the monitor will automatically be assigned an IP address by the LAN router You must find out what this IP address is so you can connect to the monitor and access t...

Page 23: ... card dynamic IP which you can buy from a cell phone store The SIM card fits in a slot underneath the modem as shown in Figure 2 6 You must know the APN of your cellular provider you can find out the APN by going to www APNChanger org and looking up your country and cellular provider Directly connect the MOXA modem to your PC using an Ethernet cable Then enter the APN into the correct field throug...

Page 24: ...unication The WIFI connection and Ethernet connection are independent from each other both can be used at the same time The recommended configuration for connection is to set the WIFI mode to Access Point and the wired Ethernet to Client mode to use with the MOXA modem To use an ethernet cable ensure the blue Ethernet cable from the ePC is plugged in to the Ethernet plug in the bottom of the instr...

Page 25: ...address 192 168 85 177 to the ePC The WIFI mode is set to Access Point so a direct connection to the ePC can be made over local WIFI the Ethernet mode is set to Auto DHCP client In this configuration the MOXA modem can be used The MOXA modem will assign IP address 192 168 127 10 to the ePC c The WIFI mode is set to Client and is connected to the office WIFI network The ePC has been given a WIFI IP...

Page 26: ... will need a USB flash drive 1 Create a file on the flash drive called resetnetwork aqm yes there is a dot at the beginning of the file name The file extension must be aqm it cannot be a aqm txt file In Windows OS you can create a new txt document and give the file name resetnetwork aqm Check the Type column to make sure it is an aqm file You might need to unhide file extensions and delete the txt...

Page 27: ...The available features in the Manage Data app will depend upon the monitor licence and the user permission level The features within the Manage Data app appear in a column on the left hand side of the screen Feature Aeroqual Licence User permission required Charts Connect Cloud User or higher Table Connect Cloud User or higher Download data Connect Cloud User or higher Auto Export Cloud Engineer o...

Page 28: ...manual sync file is later uploaded from a PC to Aeroqual Cloud This feature is used if the Monitor does not have an active data connection to Aeroqual Cloud at the monitoring site but the data is required to be in Aeroqual Cloud for data storage and so all stakeholders can access the data Figure 5 5 shows the Manual Sync download tool in Aeroqual Connect and the Manual Sync upload tool in Aeroqual...

Page 29: ...itor can be put in to Service Mode by clicking the service mode button This will tag the data as service data which can later be filtered when daily or hourly averages are being calculated For further discussion on Service Mode see section 6 3 Gain and offset adjustment Gain and offset adjustments are made as part of the monitor gas calibration procedure 5 3 Configure Instrument Aeroqual Licence U...

Page 30: ...ewed or edited using the module settings dialogue IMPORTANT These settings should not be changed without instruction from Aeroqual Figure 5 6 The Diagnostics and Advanced app displays real time monitor operational readings and settings which control how the modules are controlled Journal Any changes to monitor settings are automatically recorded in the monitor journal with a date and time stamp an...

Page 31: ...er of the monitor may be given an individual username and password to access the monitor There is no limit to the number of users which can be created Access Profile User Engineer Administrator Can view and download data Can perform a calibration and change calibration settings Has full control over all monitor settings Can control access login and password for other users Engineers cannot access ...

Page 32: ...Surfaces marked with a Caution Hot Surface and an internationally recognised symbol may get hot and deliver burns If installed the 80180 Particle Monitor is a Class 1 laser product and is not considered dangerous if used correctly It should not be powered up with the cover removed 6 1 Service frequency guidelines The frequency of some of the service activities described above can depend upon envir...

Page 33: ...meter is included in the Dust Sentry service kit DS R20 but not the AQS service kit AQS R20 It is also available separately DS R8 Figure 6 3 0 2 2 5 L min rotameter for PM flow measurements 6 3 Manual Service Mode Performing service work on the monitor such as changing filters or measuring flow rates can cause the gas or particle readings to fluctuate It is important to exclude these data from air...

Page 34: ... NOTE Whenever these service activities are performed it is important to record the activity in the Journal using a manual user entry See Section 6 4 Tools required for regular service and maintenance Service and maintenance of the monitor requires basic tools such as Phillips head screw driver and adjustable spanner and multimeter for checking electrical connections The Dust Sentry or AQS monitor...

Page 35: ...the monitor inlet flow rate is correct after changing the filter to ensure there are no leaks Figure 6 6 The particle filter on the gas inlet can be easily replaced it should be replaced when it gets dirty as shown in the image on the right a new filter is shown on the left dirty filter on the right Measure and adjust monitor inlet flowrate and module flow rate Maintaining a consistent flow rate i...

Page 36: ...l R7 or the Bios Dry Cal See Section 6 1 Attach the flow meter to the inlet port white ring of the gas module Reconnect the inlet fitting after measuring the gas module Record the flow rate of the module in the Journal by making a manual user entry 6 5 4 3 Adjust the PM inlet flow rate If the PM inlet flow rate is found to be lower than expected it could be because one of the modules has a leak or...

Page 37: ...rval Recommended Monthly depends on local conditions See Section 6 1 for further discussion on filter change frequencies Online reference training aeroqual com Dust Monitor technical Training section 5 1 Online video YouTube Channel Aeroqual Service and Maintenance playlist The filters for the Particle Monitor are located inside the optical module Use a large flat head screw driver to unscrew the ...

Page 38: ...tenance playlist The AQS R56 includes a flow adaptor which is fitted on the inlet for the Particle Monitor it is fitted above the cyclone as shown in Figure 6 11 Figure 6 11 When checking the flow rate of the Particle Monitor left place the flow measurement adaptor above the cyclone The position of the flow adaptor when measuring the Particle Profiler is shown on the right 6 5 6 1 Using the buffer...

Page 39: ...djust the purge valve until the flow reads 2 0 LPM 0 05 The final adjustment can be a little tricky turn the purge valve slowly If it is not possible to reach 2 2 LPM at step 2 then there may be a leak or the pump might need to be replaced 6 5 6 3 Flow adjustment of Particle Profiler NOTE It is important to use the buffer chamber when measuring or adjusting the flow rate of the Particle Profiler S...

Page 40: ... 2 Online video None 6 5 7 1 Leak check a Particle Monitor 1 Remove the TSP head and install the R23 vacuum gauge above the sharp cut cyclone 2 Fully close the purge valve and fully open the exhaust valve 3 The vacuum gauge should reach at least 60 kPa 4 Then remove power pull out black and red cable to the electronics module to turn off the pump 5 Count how long it takes for the pressure to chang...

Page 41: ...ticle Profiler modules pinch the tube as shown in Figure 6 17 3 Remove the TSP inlet and place the vacuum gauge on the inlet 4 Wait for the vacuum gauge to stabilise 5 Remove black and red power cable from electronics box Figure 6 16 Original Particle Profiler Cap the purge and exhaust lines Place the vacuum gauge on the inlet Disconnect the power observe the change in pressure Figure 6 17 Pinch t...

Page 42: ... for the Particle Monitor are set to sensible settings The gain should be between about 0 6 and 4 0 The offset should be 0 000 See Section 7 2 for a discussion on gain adjustment of the Particle Monitor Figure 6 18 The zero filter is fitted above the cyclone for a Particle Monitor left and directly on the inlet for a Particle Profiler right 6 5 8 2 Check the auto zero calibration flow rate of the ...

Page 43: ...0 6 positive flow out from the inlet You will need to change the port on the flow meter to measure this flow as shown in Figure 6 18 If no flow is measured there may be an issue with the zero cycle or zero pump See Appendix 1 for trouble shooting Measure the positive flow coming out from the inlet and record this in the journal The zero cycle takes approximately 6 minutes to complete NOTE Once the...

Page 44: ...ump AQS R10 Typically the pumps last between 12 and 18 months However the pumps should be replaced when the correct flow can no longer be maintained Figure 6 21 The Particle Monitor contains two pumps the Particle Profiler has one pump Leak check gas module If the correct flow rate cannot be achieved through a gas module this may indicate a leak An individual gas module can be checked for leaks by...

Page 45: ...n a change of inlet flow rate It is important to measure the inlet flow rate after the module change and document this in the monitor journal Tools required Tube Cutter Large Phillips head screw driver AQM R7 Parts required Tubing CS Tube10 CS Tube11 power cable communication cable 2x luer cap Service interval As required If a module is removed or added then a software change is required The softw...

Page 46: ...able and one black and red power cable You need 4 x 10mm M4 screws It may be necessary to cut in to the sample and exhaust lines in order to add additional gas fittings For this you will need a tube cutter do not use scissors You will also need tee fittings and luer fitting and tubing It may be possible to connect a new module directly to manifold on the left side of the enclosure It is important ...

Page 47: ... adjustment 6 5 4 3 Adjust as required following gas inlet flow check PM inlet flow adjustment 6 5 6 Adjust as required following PM inlet flow check PM leak check 6 5 7 Every 3 months Quarterly PM zero calibration check 6 5 8 Every 3 months Quarterly PM zero calibration flow check 6 5 8 1 Every 3 months Quarterly PM inlet cleaning 6 5 9 Every 3 months Quarterly Change gas flow pump 6 5 10 Every 1...

Page 48: ...bration procedure first by delivering zero air to the monitor inlet and adjusting the offset and then delivering span gas to the monitor inlet and adjusting the gain Aeroqual provides all of the equipment required to perform field calibration Aeroqual offers a portable calibrator called the AirCal 1000 Offset and gain adjustments are performed using the software tools provided by Aeroqual Connect ...

Page 49: ...back panel for at least 30 mins before staring calibration Turn on the Ozone generator and set it to deliver 0 1 ppm Ozone for at least 30 mins before starting calibration this allows time for the lamp in the ozone generator to stabilise at 0 1 ppm Calibration gases Aeroqual cannot supply calibration gas cylinders these must be purchased locally Aeroqual recommends small size portable gas cylinder...

Page 50: ...y calibration requirements if these are defined for the monitoring activity Plan routine calibrations at an interval that is consistent with the data quality objectives for your monitoring purpose Field calibration may be necessary if the gas module is operating out of specification and all other trouble shooting steps have been taken Record your observations and calibration results in the calibra...

Page 51: ... for at least 30 mins before starting the calibration this allow time for the lamp in the ozone generator to stabilise at 0 1 ppm The Calibration screen in the Calibration and Service App in the Aeroqual software is where you will perform the calibration and change any monitor settings Figure 7 3 The main calibration screen is where the average and standard deviation can be read This is also where...

Page 52: ... ozone calibration gas The a value should be checked and adjusted as part of routine field calibration see Figure 3b Note that only the a value is set for NO2 the offset should be left at 0 000 and the gain should be left at 1 000 Below is a brief summary of the calibration steps for the NO2 O3 system These steps must be carried out in the order described here A detailed step by step process is de...

Page 53: ... need to record a range of details as part of the calibration process Use the Calibration Record document in section 12 3 The list of record capture tables are listed below Table Details to record 1 Monitor customer and calibration technician details 2 Calibration equipment used 3 Calibration gas details 4 Changes to the local surroundings which may have an impact on the measurements 5 Monitor pre...

Page 54: ...d then correct it otherwise replace the module Go to zero calibration If the problem cannot be resolved then remove the module and cap off the gas connections Record fail in the calibration report Go to zero calibration NOTE The total flow rate will be reduced because of the module which has been removed Zero Calibration Table Details to record 7 Zero calibration results Zero calibration is perfor...

Page 55: ...bration is complete on the remaining modules then the door to the monitor can be opened and the failed modules can be removed for inspection The NO2 calibration a adjustment should be performed at the appropriate step during the Ozone span gas delivery Step 8 1 16 NOTE The order in which modules should be span calibrated is very important see section 5 3 1 Ox gain using NO2 calibration gas 2 O3 ga...

Page 56: ...osen span point and left the generator running at this span point for at least 30 mins to allow the output to stabilise 8 1 12 Record the ozone span concentration in Table 8 Column 8 1 3 8 1 13 Wait for the O3 values to stabilise towards O3 calibration gas as described in Table 8 Column 8 1 5 c If the values have not stabilised then write fail in the last column NOTE If the O3 module fails calibra...

Page 57: ... is operated in accordance with Aeroqual s servicing and maintenance procedures Factory servicing and calibration Factory servicing includes cleaning and calibration of the PM module only The PM module can be removed from the monitor and returned to the factory All Aeroqual PM Modules need to be returned to the factory for service and calibration at the following intervals Dust Sentry Particle Mon...

Page 58: ...point per 24hrs Filters must be appropriately prepared and transported Lab and field blank filters should also be used Balance accuracy for pre and post weighing should be better than 0 0001 µg High Volume samplers Other Non Reference methods Optical Open Path Existing instrumentation can be used to establish variance between Aeroqual and a known monitor This method can be used to assess new versu...

Page 59: ...low shows the slope calculation In this example the Monitor is reading higher than the reference monitor The slope of the curve Reference vs Dust Monitor is 0 6568 So a gain of 0 6568 needs to be applied to the monitor The Aeroqual monitor will need a new gain calculated using the formula below 𝑵𝒆𝒘 𝑮𝒂𝒊𝒏 𝑶𝒍𝒅 𝑮𝒂𝒊𝒏 𝑿 𝑲 𝑭𝒂𝒄𝒕𝒐𝒓 𝑵𝒆𝒘 𝑮𝒂𝒊𝒏 𝟏 𝟎 𝟔𝟓𝟔𝟖 𝟎 𝟔𝟓𝟔𝟖 Upload the new gain into the gain parameter in the...

Page 60: ...ntact the Aeroqual distributor in your local country for technical support Sensor failure A sensor failure error can occur for different reasons sometimes this can be related to a sensor parameter exceeding an allowable value If you get a sensor failure error contact the Aeroqual distributor in your local country for technical support Communication errors 1 Failure to see the WIFI network broadcas...

Page 61: ...bration performed Incorrect gas cylinder used or gain calculated incorrectly Redo calibration or identify error and correct it Particle Monitor and Particle Profiler troubleshooting PM 2 5 PM 10 0 Cyclones fitted on the wrong side Swap cyclones to correct side Section 0 Auto zero calibration failing on the PM10 0 Check baseline calibration of PM10 Section 6 5 8 Incorrect gain applied Check gain on...

Page 62: ... with the following standards EN 61000 6 1 2001 EN 61000 6 3 2001 Part 15 of the FCC Rules Operation is subject to the following two conditions 1 these devices may not cause harmful interference and 2 these devices must accept any interference received including interference that may cause undesired operation 2 The Aeroqual Dust Sentry PM10 has achieved MCERTs certification for indicative ambient ...

Page 63: ... of reading or 20 ppb 2 0 100 1 2 3 years Table 12 1 Gas modules available for integration in to the monitor NOTE O3 and NO2 Modules have no serviceable parts The VOC analyzer module uses a replaceable 10 6 eV UV lamp if the lamp needs replacing contact the Aeroqual distributor in your local country for technical support Gas Module design Gas modules come in two different designs These two designs...

Page 64: ...s modules is powered by a single diaphragm pump inside the monitor enclosure The pump pulls sample air through the gas module After it has been measured the sample air passes through the pump and is exhausted outside the monitor There are two different types of tubing material used to handle the gas flow Before the gas reaches the sensor all of the tubing material is rigid non reactive PFA After t...

Page 65: ...ata transfer I O module 5 for controlling the flow rate pump module The sample flow for the Particle Monitor and Particle Profiler is separate from the gas sample flow There is a separate pump a separate inlet and a separate exhaust Comparison between the Particle Monitor and the Particle Profiler The Particle Profiler measures particulate concentrations using particle counting it outputs multiple...

Page 66: ...ee modules a the optical engine on the far right b the pump module in the middle c the I O module on the left The particulate size selection TSP or PM10 or PM2 5 or PM1 0 is determined by the sharp cut cyclone on the Particle Monitor inlet on the outside of the Dust Sentry shown in Figure 12 5 The Particle Monitor can be configured to measure either of these four size fractions simply by changing ...

Page 67: ...ers mounted on the outside of the optical module in the Particle Monitor they are held inside Figure 12 6 The Particle Profiler uses three modules a the optical module on the far right b the pump module in the middle c the electronics module on the left 12 3 Mains wiring color guide The following table is only intended as a reminder always check your local guidelines Wire US AC power circuit wirin...

Page 68: ...e Time Serial number Date of previous calibration Customer name Site name Engineer name Table 2 Equipment details Equipment Brand Model number Serial number Gas dilution calibrator Ozone generator Zero air source Flow meter Gas Regulator 1 Gas Regulator 2 Table 3 Gas cylinder details Gas Type Gas Balance Manufacturer Expiry date Cylinder pressure 1 NO2 Air N2 2 Isobutylene Air N2 3 4 5 ...

Page 69: ...pre checks Before opening the door ID SOP description Observation reading Pass Fail Done 5 1 Put monitor into service mode 5 2 Gas inlet secure 5 3 Particle inlet secure 5 4 Door locks are operational 5 5 Record the flow rate before opening door 5 6 Previously measured flow rate After opening the door 5 7 Replace the inlet filters 5 8 Measure flow rate again 5 9 Go to section 6 if required then re...

Page 70: ...ast measured Flow rate measured now If flow rate is the same then pass if changed then fail Pass Fail Pass Fail Pass Fail Pass Fail 6 6 Adjust bypass valve If all of the modules show reduced flow and there is no leak then the adjustment bypass valve can be used Yes No 6 7 Flow rate measured following adjustment If flow rate is the same as section 6 3 then pass if changed then fail Pass Fail Pass F...

Page 71: ...e standard deviation during zero calibration 10 minute average New Calculated offset1 Minimum and Maximum recommend ed offset ppm Offset uploaded Reading after offset changed Pass Fail 7 1 1 7 2 3 7 2 3 b 7 2 3 c 7 2 4 7 2 4 b 7 2 5 7 2 6 7 2 7 NO2 0 000 N A N A N A N A O3 0 0 0 005 0 002 Max 0 050 Min 0 050 Ox 0 0 0 005 0 002 Max 0 050 Min 0 050 PID 0 0 0 002 0 002 Max 0 05 Min 0 05 Comments Equa...

Page 72: ...Pass Fail 8 1 1 8 1 2 8 1 3 8 1 5 8 1 5 b 8 1 5 c 8 1 5 d 8 1 6 8 1 6 b 8 1 7 8 1 8 8 1 9 8 1 10 NO2 1 000 span 5 2 of span NA NA Reading after an adjustment should be close to 0 000 O3 N A span 5 2 of span max 5 000 min 0 2 N A Ox N A span 5 2 of span max 5 000 min 0 2 N A PID N A span 5 2 of span max 5 000 min 0 2 N A Comments Equation 5 New Gain Current Gain x Span concentration Gas reading Equ...

Page 73: ...de Page 73 Table 9 Calibration Post checks ID Description Observation reading Pass Fail Done 9 1 Disconnect calibration equipment 9 2 Record total inlet flow rate 9 3 Replace the mesh inlet and cap 9 4 Lock door 9 5 Secure the site 9 6 Service mode ...

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