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Aeroqual Dust Sentry User Manual

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Dust Sentry &
AQS 1
User Guide
1
Aeroqual Dust Sentry and AQS User Guide
© Aeroqual Ltd. 2024

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Summary of Contents for Aeroqual Dust Sentry

  • Page 1 Dust Sentry & AQS 1 User Guide Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 2 September 2017 NO2 and VOC added 1, 1.1 May 2018 Calibration section updated February 2019 Combining AQS, Dust Sentry, Dust Sentry Profiler New internal components and layout, handle Updated specifications Added US power cable October 2019 New 3 party sensor power and data interface Added Sierra modem New “lease mode”...
  • Page 3 Alternative sources of information and help In addition to this user guide, Aeroqual offers other sources of information which can assist in the operation of the monitors. The Aeroqual website contains brochures, technical notes, frequently asked questions, and user guides.

  • Page 4: Table Of Contents

    Safety ............................ 22 Surveyor’s tripod mounting ....................22 Connectivity ........................... 25 Aeroqual Connect (via Direct WIFI / LAN) ................25 Aeroqual Cloud (via Network WIFI / Modem) ............... 26 Communication settings ......................30 Resetting the communication settings back to factory settings ..........31 Software ............................
  • Page 5 Troubleshooting ..........................90 Copyright ............................92 10 Compliance ............................ 92 11 Warranty ............................92 12 Appendix ............................93 12.1 Mains wiring color guide ......................93 12.2 Calibration Records ....................... 94 Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 6: Introduction

    1 Introduction 1.1 Overview The Dust Sentry and AQS 1 (referred to herein as a ‘monitor’) are flexible air quality monitoring systems that can be configured to target specific applications of interest in industrial, urban environment and regulatory applications. The monitor incorporates key technology features that allow it to deliver data with very strong correlation to EPA-approved monitors –...

  • Page 7: Particulate Measurement Options

    1.2 Particulate Measurement Options An Aeroqual Dust Sentry or AQS 1 can be equipped with several different options for measuring particulate matter including a Nephelometer, a Profiler, or a PCX module. 1.2.1 Particle Nephelometer Module The Aeroqual Particle Nephelometer Module combines a laser nephelometer with a high-precision sharp cut cyclone.

  • Page 8: Gas Modules

    • • • Note: Gas module are only available in an Aeroqual AQS, however Dust Sentry and Dust Sentry Pro can be upgraded to work with gas modules. 1.4 Optional external sensors The monitors can integrate several external sensors such as weather sensors, solar radiation, and noise sensors.

  • Page 9: Dimensions

    These dimensions are for a visual representation only, for full details see Section 1.6 Specifications. Dimensions for DS, or AQS1 with Nephelometer Module: Dimensions for DS Pro or AQS1 with Profiler Module: Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 10: Specifications

    SCAQMD Rule 1466 Pre-approved Pre-approved Auto zero check Auto flow control Sample flow 2 LPM 1 LPM 1 LPM Recommended factory calibration 24 months 12 months 24 months interval Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 11 Volatile Organic Compounds High 0 - 30 ppm (0.01 ppm) Hydrogen Sulfide 0-10,000 ppb (0.1 ppb) Sulfur Dioxide 0-10,000 ppb (0.1 ppb) Methane 0-100 ppm (0.01 ppm) Gas calibration interval As required Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 12: Quick Setup Guide

     Send any questions about things you are unsure about to technical@aeroqual.com 7. Write a checklist  Write your own checklist to ensure a smooth installation and setup.  Include any reporting requirements that will be required. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 13 All monitors are supplied with a traceable factory calibration. This calibration is applicable to the commissioning phase and accordingly Aeroqual does not recommend an initial calibration as part of monitor commissioning.

  • Page 14: Pre-Planning

    Configure modem (where supplied) • Aeroqual recommends these steps be performed in an office or laboratory as part of a quality control check of the monitor to make sure the monitor has arrived undamaged and the flow system, electrical system and communication system are working as expected.

  • Page 15: Assembly

    Note: A wiring color guide is in Section 12.1 3. Reconnect into the connector ensuring the plugs are fitted securely and the nut gland tightened. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 16 Instruments built pre June 2024 will be equipped with a larger power and data interface as shown below. The battery input can be found in the back middle of the control PCB. Figure 2-2 DC-DC convertor and battery voltage monitor Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 17: Powering On/Off

    To connect third party sensors, feed the sensor cable through a free cable gland on the underside of the monitor and wire it to a plug in an available COM port (indicated below). Third party sensors need to be configured through Aeroqual Connect or Cloud – see Section Error! Reference source not found..
  • Page 18 You are not required to feed the cable through the gland to do this. Figure 2-5 Connective auxiliary sensors using PDI Core Configuration Steps In the Configure Instrument screen, choose a sensor driver from the drop-down list under External Sensors. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 19 – see Section 2.7.4. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 20 The AUX module uses a 12-way green connector to connect to the external sensor. When you are happy with the wiring then apply power and log on to the Aeroqual Connect software as described in Section 4.1 Aeroqual Connect (via Direct WIFI / LAN).

  • Page 21: Mounting And Site Positioning Guidelines

    For pole mounting: Secure top mounting bracket at a suitable height using the U-bolts or metal bands provided Fix lower mounting bracket to the Dust Sentry chassis with screws Hang the monitor on the top mounting bracket Place U-bolt or metal band through lower mounting bracket Secure bottom mounting bracket using the U-bolts or metal bands provided NOTE: Only one U-bolt or metal band is required to secure the bottom bracket.

  • Page 22: Inlet Height

    3.5 Surveyor’s tripod mounting If needed, Aeroqual can supply a mounting kit that attaches the AQS 1, Dust Sentry or Dust Sentry Pro to a standard surveyor’s tripod. The kit includes one mounting plate, 8 x M4 hex head bolts and nuts, and 6 pegs.
  • Page 23 If the supplied pegs aren't suitable for the ground type, you might need to find another way to secure the legs. For extra security, attach guy wires to the four holes in the corners of the mounting plate. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 24 Check the tripod attachment screw is firmly tightened and that the monitor is centered on the tripod. Figure 3-4 The monitor should be centered and level on the tripod Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 25: Connectivity

    Section 4.2.2 Connecting using a cellular modem. There are two ways to connect to your monitors: Aeroqual Connect (via Direct WIFI / LAN) for initial set up and when access to the internet is limited. Aeroqual Cloud (via Network WIFI / Modem) for remote access, visibility of all your monitors, and remote technical support from Aeroqual.

  • Page 26: Aeroqual Cloud (Via Network Wifi / Modem)

    Access your monitor on Aeroqual Connect After connecting your monitor to your device, open an internet browser window and enter 10.10.0.1 in the address bar. You should see the Aeroqual Connect login screen. Log in with the default username and password provided.
  • Page 27 If your laptop also has access to the same LAN, then this IP address can be typed into a browser address bar and a connection to the monitor can be established over the LAN connection. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 28 SIM card to be the Primary SIM card. Some configuration functionality useful in an Aeroqual monitor is detailed below; however, for a full list of configuration options, please consult the modem manufacturer’s documentation available at: Sierra Wireless: https://www.sierrawireless.com/...
  • Page 29 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 modem. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 30: Communication Settings

    Ethernet cable. Enter 10.10.0.1 to connect directly to the monitors. NOTE: Should you need to reset the communication settings, see the following section, Section 4.4. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 31: Resetting The Communication Settings Back To Factory Settings

    The WIFI settings can be set back to Access Point mode and the monitor will again appear as a WIFI network. Depending on the version of Aeroqual Connect you are using, the SSID name will appear as the monitor “serial number” or as “Aeroqual AQM”, the reset WIFI password will be “Aeroqual”.

  • Page 32: Software

    The data from each module can be viewed on screen in a Table. The from and to dates can be selected using a calendar tool, and the averaging period such as daily, hourly or minute can also be selected. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 33 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.

  • Page 34: Calibration And Service

    Engineer or higher The Configure Instrument page provides useful information about the monitor, including: • The list of configured licences. When data was last sent to the Aeroqual cloud database. • • The number of text alerts remaining. NOTE: These come from cloud.aeroqual.com not from the monitor.
  • Page 35 The Diagnostics and Advanced Page provides access to monitor and individual module operating parameters and is used by Aeroqual technical support to troubleshoot and diagnose monitor condition. It provides real time information about the status of the modules and allows operational settings of the modules to be viewed or edited.

  • Page 36: Administration

    These access credentials are published in multiple public documents and are only used to first connect to and configure the monitor. Aeroqual recommends that a new Administrator user is created with secure password and the default Administrator user is deleted which will make the monitor more secure.

  • Page 37: Setup, Service, And Maintenance

    Recommended service frequencies for each service activity are given in Section 6.1.1. Further detail on each of the service activities can be found on the Aeroqual training website: https://support.aeroqual.com It is very important to keep service records.
  • Page 38 For PM flow rate measurements, a 0.2 - 2.5 L/min rotameter is suitable, or the flow meters noted above. A rotameter 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).
  • Page 39 Gas flow meter AQS R8 HS – Ordered separately, only required for AQS (see Section 6.1.1 for a discussion of requirements for flow meters) • Rotameter for PM flow DS R8 (included in the Dust Sentry service kit DS R20x) Vacuum gauge R23x (Included in both Dust Sentry and AQS R20x Service Kits, also available •...

  • Page 40: Pdi Core

    (turning the switch off) or unintentional (e.g. a battery running flat. In the event the switch is turned to ‘OFF’: • The shutdown process begins immediately and a shutdown command is sent to EPC Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 41 When the jumpers are in the right position they are configured as 0-5V and when in the left position they are configured as 4-20mA inputs. The function of each channel can be selected independently Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 42 In the example shown in Figure 6-9 the relay will turn ON when PM10 readings exceeds 140 µg/m when the reading drop below 130µg/m the relay will turn OFF. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 43 Note that both the 12V and 5V lines on the Analog Input connector are fused at 0.35A. If you require a higher current then an external power source must be used. Figure 6-11 Powering a device via the relay Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 44: Nephelometer And Particle Profiler Modules

    Turn off power to the monitor during this process – see Section 2.6. • • If not already fitted, attach a PM inlet O-ring to the aluminium retaining ring and apply a small amount of lubricant. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 45 The Particle Nephelometer ships from the factory with a thin film of tape or coloured cap which protects the inlet, this must first be removed as shown in Figure 6-15. Figure 6-15 Remove the protective tape or cap from the PM inlet Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 46 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 6.4.4 and 6.3.4. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 47 Use fresh Tygon Tube (CS Tube 10) when re-connecting the tube back on the pump. This is because the barbs on the pump stretch the tube. The online training website contains details on how to replace the gas sample pump. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 48 Service Interval Recommended Monthly. (See Section 6.1.1) 1. Enter ‘Service Mode’ in Aeroqual Connect to ensure that any fluctuations in the data caused from this activity can be excluded from air quality reports. 2. Connect flow adapter to sample inlet by removing the TSP head and pressing the flow adapter onto the top of the cyclone.
  • Page 49 Figure 6-21 The flow rate of the Particle Nephelometer is set by adjusting the sample flow adjustment valve. Note: If your Particle Nephelometer Pump Module appears different than above you may have an older version. If so, please consult support.aeroqual.com for instructions on how to adjust the flow on this type of module.
  • Page 50 Service Interval Recommended Monthly. 1. Enter ‘Service Mode’ in Aeroqual Connect to ensure that any fluctuations in the data caused from this activity can be excluded from air quality reports. 2. Connect flow adapter to sample inlet by removing the TSP head and pressing the flow adapter onto the top of the inlet.
  • Page 51 Figure 6-24 The flow rate of the Particle Nephelometer is set by adjusting the purge and exhaust valves. Note: If your Particle Profiler Pump Module appears different than above you may have an older version. If so, please consult support.aeroqual.com for instructions on how to adjust the flow on this type of module.
  • Page 52 Check all the tube connections. NOTE: The pressure change (leak rate) should be no more than 10 kPa in 10 seconds. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 53 The Particle Nephelometer has an automatic zero calibration function which runs every 12 hours, this procedure automatically changes the zero offset of the Particle Nephelometer. Tools required R56, and DS R8 or AQS R8 HS Parts required None Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 54 The filters for the Particle Profiler are in a filter casing outside the optical module and within the Particle Profiler Pump Module. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 55 Profiler. However, if the filters look visibly blackened, they should be replaced, regardless of the time elapsed. Figure 6-29 The AQS R31 sample filter should be replaced once the filter begins to blacken. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 56 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 flow has been measured the TIMA parameter must be set back to 720. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 57 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 6-32 The Particle Nephelometer contains two pumps, the Particle Profiler has one pump. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 58: Pcx Modules

    6. Insert the PM inlet into the Swagelok fitting and carefully tighten. Thread tape is NOT required. Figure 6-33 Add the O-rings to the PCX. Press the TSP inlet on after. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 59 When this value exceeds the trigger level, the system will raise the ‘Flow Sensor Aging’ flag. The trigger level is controlled by the value stored in the module setting ‘TEMA’ for Flow. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 60 NOTE: The target flow rate of the PCX module is 1.0 ± 0.01 LPM Figure 6-11 The PCX module flow rate is visible in the Manage Data and Diagnostics tab of Aeroqual Cloud. The flow rate as measured by the internal flow sensor should be checked annually to ensure there has been no change.
  • Page 61 Leak checks are not required with the PCX module as the flow in the module is controlled. If the module can achieve the flow rate at the inlet as indicated in Section 6.4.4 the module will function correctly. If this flow rate is not achievable, please contact Aeroqual or your local distributor for servicing. 6.4.6...
  • Page 62 Check that the gain and offset values for the PCX (stored in the Calibration and Service page  Calibration tab of Aeroqual Cloud) are set to sensible settings. The gain should be between about 0.6 and 4.0. The offset should be 0.000.
  • Page 63 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 10 minutes to complete. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 64 The PCX module is held in place inside the monitor with two screws in keyhole slots and secured to the inlet with a Swagelok fitting. To remove a PCX module: 1. Enter ‘Service Mode’ in Aeroqual Connect to ensure that any fluctuations in the data caused from this activity can be excluded from air quality reports.
  • Page 65 To re-install a PCX module, repeat the above steps in the opposite direction and then complete a leak check as described in Section 6.4.5. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 66 6.4.9.1 PCX Specific Error States The PCX module can provide more detailed error states than previous Aeroqual modules. The table below summarizes which error states the module may present, the possible cause, and the recommend action the user should take.
  • Page 67 PCX Status LED The PCX module contains two LED which indicate module status. The main LED, which is present on all Aeroqual modules, and a secondary LED which can indicate additional states unique to the PCX module. Figure 6-44 LED status lights on the PCX module...
  • Page 68 If done through Connect this should be instantaneous. 6. Adjust the PWM value up or down until you have achieved the target flow rate of 1.00 L/min +/- 0.01. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 69: Gas Modules

    It is recommended that the monitor engineer, over time, develops an appropriate servicing schedule for a site. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 70 Figure 6-49 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). Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 71 When the monitor is new, the inlet flow rate is recorded in the monitor logbook which is provided from the Aeroqual factory. The measured flow rate should be equal to the previously measured flow rate which is recorded in the monitor journal.
  • Page 72 Figure 6-52 A gas module can be checked for leaks by using a diaphragm pump and R7 flow meter NOTE: If the module is found to have a leak, contact the Aeroqual distributor in your local country for technical support.
  • Page 73 Aeroqual Connect – Test 001 (Test 001) Normal Operation AQS 10052017-591 Aeroqual AQS 1 - Test PM2.5 PM10 RAIN Figure 6-53 Change the module configuration in the software in the Configure Instrument page. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 74 It important to use the large barb tee for the exhaust tubing and the small barb tee for the sample tubing. Figure 6-54 Adding a new module requires adding additional sample and exhaust lines. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 75: Scheduled Maintenance

    Leak check a gas 6.5.7 As required following module flow check module Add, remove, replace 6.5.8 As required gas module Table 6-1 Service frequency guidelines for various service activities. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 76: Calibration

    1. Factory calibration pre-shipment. All gas modules are calibrated and must meet rigorous performance standards before being shipped. This is captured by the factory calibration certificate. Experience shows that Aeroqual’s factory calibration transfers well to the field, meaning that field calibration is not required during initial set up.
  • Page 77 Calgaz: www.calgaz.com. Calibration gas is purchased at high concentrations, in a balance of air or nitrogen and then diluted to a lower concentration using a gas dilution calibrator such as the Aeroqual AirCal1000. Other gas dilution systems can also be used.
  • Page 78 2000 ppm Table 7-1 Recommended gas cylinder concentrations. A two-stage pressure regulator is required for use with these gas cylinders. Aeroqual can supply the regulator (Part Number AIC GASREG01) for use with C10 fitting. The Aeroqual regulator is shown attached to the Calgaz cylinder in Figure7-1.
  • Page 79 Assurance Handbook is a good example of how prescriptive calibration requirements for such applications can be. Aeroqual makes the following recommendations about calibration frequency for the monitor: • Follow all local regulatory calibration requirements if these are defined for the monitoring activity.
  • Page 80 0.1 ppm. The Calibration screen in the Calibration and Service Page in the Aeroqual software is where you will perform the calibration and change any monitor settings.
  • Page 81 Figure 7-5 When using the Ozone calibrator, make sure the tee fitting is capped. Figure 7-6 When using the AirCal 1000 make sure the tee is un-capped. 7.1.5 Calibration pre-checks: Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 82 If the inlet flow has changed (more than ± 20 %) since last time it was measured (step 5.6) • then go to Step 6. Close the door 5.10. Record the final total flow. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 83 After the calibration is complete on the remaining modules, then the door to the monitor can be opened and the failed modules can be removed for inspection. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 84 Start the calibration gas flowing at your chosen span point. Make sure there is excess flow out from the tee at the monitor inlet as shown in Figure 7 5. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 85 Figure 7-5. 8.10. Deliver ozone from the ozone calibrator at your chosen span point, Aeroqual recommends 0.1 ppm, make sure the tee is closed using the cap as shown in Figure 7-5.
  • Page 86 Record the inlet flow rate Replace the mesh inlet and cap Lock door Secure the site Take monitor out of service mode and record the time in the form. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 87: Particulate Module Calibration

    7.2.2 Field calibration by co-location In order to perform a field calibration, your Aeroqual monitor must be located at the same site as a Reference PM monitor. This is called ‘Co-location’ and is widely performed in ambient air quality monitoring to assess the performance of a new monitor. The two monitors are operated for a given period, and their data are compared.
  • Page 88 Steps to performing a K factor correction Create a spreadsheet, with 1 column of reference data, and 1 column of Aeroqual data, in the averaging period you have selected, for instance 1 hour or 24 hour averages for the period of your co-location.
  • Page 89 Figure 7-7 Gain adjustment in the calibration screen of Aeroqual Connect. Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 90: Troubleshooting

    Table 8-1 Not all known issues are listed in Table 8-1 especially if not known to Aeroqual when this user guide was written. The Aeroqual training website provides a comprehensive and up to date list of known issues and provides solutions as soon as solutions become available.
  • Page 91 If this error occurs contact the Aeroqual distributor in your local country for technical support. Fault Isolation / Symptom Possible Cause Reference Solution Gas module Troubleshooting Flow leak or incorrect Section 6.5.3 flow Negative readings Dirty inlet gas filter Change filter Section 6.4.3...

  • Page 92: Copyright

    Aeroqual reserves the right to revise this document or withdraw it at any time without prior notice. The availability of particular products may vary by region. Please check with the Aeroqual distributor nearest to you.

  • Page 93: Appendix

    Live / Phase Black or Red Brown or Red Brown or Black Neutral White or Grey Blue or Black Blue Earth / Ground Green or Green-yellow Green-yellow Green-yellow Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...

  • Page 94: Calibration Records

    Zero air source Flow meter Gas Regulator 1 Gas Regulator 2 Table 3: Gas cylinder details Cylinder Gas Type Gas Balance Manufacturer Expiry date pressure Air N Isobutylene Air N Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 95 Previously measured flow rate After opening the door Replace the inlet filters Measure flow rate again Go to section 6 if required then record final inlet flow rate here Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 96 6.3 then pass, if changed then Pass / Fail Pass / Fail Pass / Fail Pass / Fail fail. What was the reason for the change in flow rate? Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 97 Min -0.050 Max +0.050 0.0 0.005 0.002 Min -0.050 Max +0.05 0.0 0.002 0.002 Min -0.05 Comments: Equation 4: New offset = Current offset + (AQS gas reading / Gain) Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 98 2 % of span min 0.2 max 5.000 span ± 5 % 2 % of span min 0.2 max 5.000 span ± 5 % 2 % of span min 0.2 Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 99 Observation / reading Pass / Fail / Done Disconnect calibration equipment Record total inlet flow rate Replace the mesh inlet and cap Lock door Secure the site Service mode Aeroqual Dust Sentry and AQS User Guide © Aeroqual Ltd. 2024...
  • Page 100 Every day, environmental professionals around the world are working hard to protect people and planet from the impact of air pollution. Since 2001 Aeroqual has equipped environmental professionals with technology that takes the time and hassle out of air quality monitoring projects. Government, industry, researchers and environmental consultants trust us to deliver actionable data built on industry-leading sensor technology, wirelessly connected to software in a single integrated package.

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