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Access Sensor Technologies UPAS v2 User Manual

Ultrasonic personal air sampler
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User Manual
UPAS v2
Ultrasonic Personal
Air Sampler
Edition 1. June, 2018

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Summary of Contents for Access Sensor Technologies UPAS v2

  • Page 1 User Manual UPAS v2 Ultrasonic Personal Air Sampler Edition 1. June, 2018...
  • Page 2 Do Not Remove Instrument Cover There are no operator serviceable parts inside. Refer servicing to Access Sensor Technologies. In Case of Damage...

  • Page 3: Table Of Contents

    Updating / Flashing the UPAS Firmware ........26 Firmware Release Notes, Installation Procedure for UPAS v2 Sampler 26...
  • Page 4 UPAS Not Writing Log Files to the microSD Card ......59 6 Frequently-Asked Questions 7 UPAS Specifications 8 Warranty and Repair Service Access Sensor Technologies UPAS User Guide...

  • Page 5: Introduction

    UPAS and then retrieve the UPAS sampled data. CAUTION: The Access Sensor Technologies UPAS Sampler is designed for indoor use only. Shield the UPAS from water, water spray, precipitation, etc. There are no operator serviceable parts inside. Refer servicing to Access Sensor Technologies.

  • Page 6: What Comes With My Upas

    O-Ring replacement kit Filter cartridges Cyclone Inlet assembly microSD Card Optional Accessories Contact Access Sensor Technologies to purchase these accessories. Description Flow Measurement Adapter (for flow verification), Additional Filter cartridges Additional size selective Cyclone Inlet assemblies What is not provided...

  • Page 7: Upas At A Glance

    Figure 1 UPAS with Cyclone Inlet Cap Removed NOTE: There are no user-serviceable components inside. Do not attempt to open the UPAS case. Return the UPAS to Access Sensor Technologies for repair. Access Sensor Technologies UPAS User Guide...

  • Page 8: Recommended Upas Filter Membranes

    Recommended UPAS Filter Membranes Access Sensor Technologies UPAS User Guide...

  • Page 9: Upas Physical Setup

    Your UPAS Sampler is identified by the serial number ID on the back of the UPAS. You will need this serial number ID when connecting the UPAS to the mobile device App. Access Sensor Technologies UPAS User Guide...

  • Page 10: Power On/Off Sequence

    LED light turns off. Release the button. If the unit has been successfully powered down the LED status light is off. If the UPAS fails to shut down, try again with a fresh five second button hold. Access Sensor Technologies UPAS User Guide...
  • Page 11 UPAS Power-On sequence Figure 2 Access Sensor Technologies UPAS User Guide...
  • Page 12 4 Set the GPS Date/Time by placing UPAS outdoors to capture the GPS signal. The process should take five minutes or less. If missing, start-up sequence stops here until GPS date/time is synchronized Access Sensor Technologies UPAS User Guide...

  • Page 13: Installing / Removing Inlet, Filter Cartridge, And Sampling Filter

    See the following photos. Make certain the cartridge is centered in the UPAS inlet socket. Filter Cartridge Filter cartridge properly Filter cartridge is installed installed in UPAS upside down in UPAS 4 Firmly screw Cyclone Inlet cap down, just beyond finger tight. Access Sensor Technologies UPAS User Guide...

  • Page 14: Removing / Installing The Sampling Filters And Chain Of Custody

    3 Remove the filter cartridge from the UPAS. Hold the filter cartridge only by the edges. 4 Return the filter cartridge to its original package. 5 Seal the package. 6 Return the package to the agency / organization sponsoring the test. Access Sensor Technologies UPAS User Guide...

  • Page 15: Cleaning The Upas

    2 With a small flat screwdriver, key, coin, etc., gently pry the inner Cyclone Insert from the outer Cyclone Inlet. Cyclone Inlet Cap (bottom side) Cyclone Insert (bottom) Inspect and clean the Cyclone Insert O-Rings (top and bottom) Foam tipped brush Access Sensor Technologies UPAS User Guide...
  • Page 16 Use a small, soft bottle brush or pipe cleaner to clean the Cyclone Air Inlet hole. NOTE: If grease was previously used, use isopropyl alcohol or ethanol to remove any remaining grease residue. Do not use any other chemical solvents. Access Sensor Technologies UPAS User Guide...
  • Page 17 (not missing), and free of damage. These are sundry spare components included with each new UPAS. Replace them if they are missing or damaged. Inspect and clean the O-Rings in the inside cover Access Sensor Technologies UPAS User Guide...
  • Page 18 Inside Cover does not fully snap onto the Inlet Cap, it indicates that the O-ring is not moving into position and may be damaged. When the cap is re-attached to the UPAS body, the two pieces will press together. Twist and press together Access Sensor Technologies UPAS User Guide...

  • Page 19: Cleaning The 37 Mm Filter Cartridge

    UPAS Filter Membranes” on page 6. 3 Press the two halves back together with tabs slightly misaligned. If they don’t easily snap together, check for the presence of the black O-ring on the top (nozzle) piece. Access Sensor Technologies UPAS User Guide...
  • Page 20 Alternately, use alcohol. Make sure that both halves of the cartridge are clean and dry before re-loading the cartridge with a clean filter membrane. Access Sensor Technologies UPAS User Guide...

  • Page 21: Optional - Greasing The Cyclone Input

    The grease can re-trap any rejected PM which becomes dislodged in these events and help prevent them from falling into the filter cartridge. This grease must be removed and replaced between sampling runs. Access Sensor Technologies UPAS User Guide...

  • Page 22: Charging The Upas Internal Battery

    Table 4 UPAS Status Light: UPAS ON and Sampling UPAS Status Indicator Definition UPAS plugged in and charging the internal Blue (cyan) light on battery. Orange light flashes UPAS battery low, recharge immediately. repeatedly Access Sensor Technologies UPAS User Guide...

  • Page 23: Using An External Battery To Extend Available Runtime

    To remove the microSD card, simply press and release the microSD card with a small coin, paper clip, ball point pen tip or fingernail. The microSD card pops out and can be removed with your fingers or tweezers, etc. Access Sensor Technologies UPAS User Guide...

  • Page 24: Mounting The Upas

    – Participants should remove the sampler when they sleep, bathe, smoke, etc. – The UPAS Sampler must be shielded from rain and all moisture at all times. Access Sensor Technologies UPAS User Guide...

  • Page 25: Mounting The Upas For Fixed Site Sampling

    Mounting the UPAS on a Camera Tripod Figure 3 – Always ensure that the UPAS is protected from damage by contact/colli- sion from any objects, vehicles, etc. – The UPAS Sampler must be shielded from rain and all moisture. Access Sensor Technologies UPAS User Guide...

  • Page 26: Flow Rate Verification And Adjustment

    UPAS housing. NOTE: The UPAS Flow Measurement Adapter is not supplied with the UPAS. It must be ordered separately from Access Sensor Technologies. Access Sensor Technologies UPAS User Guide...
  • Page 27 Adapter installed on the Compare output UPAS. measurement to the 1 LPM theoretical setting. Flow Rate Verification Calibration Train Figure 4 8 After testing, disconnect the flow meter and flexible tubing from the UPAS. Access Sensor Technologies UPAS User Guide...

  • Page 28: Updating / Flashing The Upas Firmware

    UPAS_v2_0-rev102-L152RE_20180510_mbed116.bin. The following instructions are comprehensive and guides you in updating the UPAS v2 firmware from any prior version to rev102. Note that the instructions may guide you to skip some steps depending on how your UPAS is responding.
  • Page 29 Make sure to hold the pushbutton for > 5 seconds to ensure UPAS is off. At this point the new firmware has been installed and is active the next time you power-On the UPAS. Access Sensor Technologies UPAS User Guide...
  • Page 30 RESET (without the # character) in the SAMPLE NAME field. You should now see the refreshed BATTERY CHARGE and BATTERY VOLTAGE displayed (look for changed values vs. Access Sensor Technologies UPAS User Guide...
  • Page 31 Again, the Special One-time Process is a one-time-only process required for some behind-the-scenes changes to occur. Do NOT use these steps in future firmware updates. Typically, the process takes about 30 seconds per UPAS. Access Sensor Technologies UPAS User Guide...

  • Page 32: Sample Run Setup / Initialization On The Mobile Device App

    The current revision of the App (version 2.1.5) is backwards compatible with all firmware revisions of the UPAS. 1 Find the Google Play Store icon on your mobile device desktop 2 Search for CSU UPAS to find the application. This is a free App. Access Sensor Technologies UPAS User Guide...
  • Page 33 3 Tap Install to install the application on your mobile device. 4 Tap Accept for all defaults and access requirements. Tap Open to run the App. Access Sensor Technologies UPAS User Guide...
  • Page 34 2 Use the Bluetooth utility on your device to scan for available devices. Your device should locate the UPAS and display it’s serial number. Serial Number on back of the UPAS 3 Once the UPAS is paired with your mobile device, start the App on your device. Access Sensor Technologies UPAS User Guide...
  • Page 35 5 The Battery SOC indicates the current charge capacity of the UPAS internal battery. When you tap the Start button, the App prompts you and indicates that you are about to start the UPAS data collection. Tap OK. Access Sensor Technologies UPAS User Guide...
  • Page 36 After a few moments, the UPAS Status indicator light turns red and the UPAS pump starts. As soon as the light turns green, it begins sampling. The green light indicates normal operation. Access Sensor Technologies UPAS User Guide...

  • Page 37: Install And Run The App On An Apple Ios Operating System

    Initiates the sampling and data logging process. Note the UPAS power button light changes, red light means pumps are on but not up to speed (not ready). Green means pumps are up to speed (ready). Access Sensor Technologies UPAS User Guide...
  • Page 38 After a few moments, the UPAS Status light turns red and the UPAS pump starts. As soon as the light turns green, it begins sampling. The green light indicates normal operation. Access Sensor Technologies UPAS User Guide...

  • Page 39: Sample Run Setup And Programming In The App (Android And Ios)

    Sample Run Setup and Programming in the App (Android and iOS) The following flow chart and table illustrate the sample run setup and run sequence. Access Sensor Technologies UPAS User Guide...
  • Page 40 GPS is turned off (see App instructions. See Chapter 2). Red light on Log file download is initializing. Optional. Download logged data from Orange light on Log file download in progress. previous sample Blue (cyan) light on Log file download is complete. Access Sensor Technologies UPAS User Guide...
  • Page 41 Example Android App Screen (left) and the iOS App Screen (right) Figure 5 Access Sensor Technologies UPAS User Guide...
  • Page 42 (and is thus used, without further calculation, as the actual sampled volume). Applying duty cycle <100% variously extends the battery endurance, at the cost of a lower effective (time averaged) sampling rate, and thus PM sample acquisition rate. Access Sensor Technologies UPAS User Guide...
  • Page 43 1.0 L/min flow rate – future inlets may use different flow values. ser must connect the UPAS to a primary flow meter and enter a Flow Offset value to reduce any error. Refer to “Flow Rate Verification and Adjustment” for detailed information. on page 24 Access Sensor Technologies UPAS User Guide...

  • Page 44: Setting A Start Time For The Next Sample Run

    Active sampling/pumping UPAS now sampling normally, Status Light turns green (or is off if within flow control with flow control within toggled off in App sample window). parameters. parameters. Access Sensor Technologies UPAS User Guide...
  • Page 45 Active sampling/pumping UPAS now sampling normally, Status Light turns green (or is off if within flow control with flow control within toggled off in App sample window). parameters. parameters. Access Sensor Technologies UPAS User Guide...
  • Page 46 Active sampling/pumping UPAS now sampling normally, Status Light turns green (or is off if within flow control with flow control within toggled off in App sample window). parameters. parameters. Access Sensor Technologies UPAS User Guide...

  • Page 47: Updating The Mobile Device App

    NOTE: If measured flow rate error is unacceptable even with Flow Offset dialed to the maximum of +/-9%, the UPAS should be factory-recalibrated. Contact Access Sensor Technologies (support@accsensors.com). Access Sensor Technologies UPAS User Guide...

  • Page 48: Upas App Lock To Hold Setup Parameters (Optional)

    UPAS is power cycled, the LED defaults to ON and the log mode defaults to NORMAL. The parameters which remain unlocked are: – GPS logging on/off – Start time setting Access Sensor Technologies UPAS User Guide...

  • Page 49: Accessing And Interpreting Sample Log Files

    UPAS folder. 2 With the App connected to the UPAS, click the Begin File Download button (on an Android device) or the Download Log Files button (on an iOS device). Access Sensor Technologies UPAS User Guide...

  • Page 50: Download App Log Files Via Bluetooth From Ios Devices

    8 Open the previously selected destination. The exported folders, organized by date, contain the individual sample log files. 9 The exported UPAS sample log files are now saved to the Mac computer and can be accessed readily. Access Sensor Technologies UPAS User Guide...

  • Page 51: For Pc Computers, Connect Ios Device To Pc Computer

    9 Upon completion, iExplorer opens the previously selected destination folder. The exported folders, organized by date, contain the individual sample log files. 10 The exported UPAS sample log files are saved to the PC computer and can be accessed. Access Sensor Technologies UPAS User Guide...

  • Page 52: Interpreting Log File Data

    (rows 38 through 52) are where all pre-programmed settings and general information can be verified. Column A is the setting name. Column B contains the parameter value. Column C contains any units or notes pertaining to the parameter value. Refer to the following figure. Access Sensor Technologies UPAS User Guide...
  • Page 53 Current App version used to program the UPAS (i=iOS, A=Android) Sample Summary UTC Date/Time when sample started (YYYY-MM-DDTHH:MM:SS) (UTC date time StartDateTimeUTC format) Local Date/Time when sample started (YYYY-MM-DDTHH:MM:SS) (Local date time StartDateTimeLocal format) StartBatteryCharge Battery SOC % when sample started (%) Access Sensor Technologies UPAS User Guide...
  • Page 54 Sample volume through filter during sample runtime (L) SampledRuntime Total sample runtime (Hr) LoggedRuntime Total logged sample runtime (Hr) AverageVolumetricFlowRate Average volumetric flow rate during sample runtime (L*min^-1) Sample Log Data Rows 57 and greater, Columns A‐Y of the data file contains recorded sample  data values from the programmed sample run. The format of the columns is  described below. A description of the logged variables in Sample Log are listed below. Access Sensor Technologies UPAS User Guide...
  • Page 55 Battery output voltage (in Volts) BFGenergy Relative battery energy GPSlat GPS latitude coordinate (decimalDegree) GPSlon GPS longitude coordinate (decimalDegree) GPSalt GPS altitude (in meters) GPSsat Number of GPS satellites being received GPSpdop GPS position dilution of precision Access Sensor Technologies UPAS User Guide...

  • Page 56: Diagnostics And Troubleshooting

    – Flow rate: Required pumping power for a 2.0 L/min flow rate is higher than for 1.5 L/min, which is higher than 1.0 L/min flow rate. NOTE: Access Sensor Technologies presently offers only a PM2.5 1 L/min cyclone inlet, however Access Sensor Technologies expects to release additional inlets and flows in the future.

  • Page 57: Interpreting Upas Status / Shutdown Mode Codes

    15%, and the sampler is at risk of shutting down soon. – If it is desired to continue the sample run for much longer the internal battery will need to be charged soon (see “Charging the UPAS Internal Battery” on page 20). Access Sensor Technologies UPAS User Guide...
  • Page 58 – 5 = Preemptive shutdown after pumps were driven to maximum power during initialization (without reaching flow control). This ShutDownMode can be associated with damaged pumps or mass flow sensor contact AST for technical assistance. Access Sensor Technologies UPAS User Guide...

  • Page 59: Acquiring / Sending Debug Files

    5 Transfer the resulting log file via file transfer (though App) or by removing the microSD card and transferring to computer. 6 Send the resulting log file to Access Sensor Technologies. Email to: Support@accsensors.com. Conducting a Diagnostic Test (DIAG#) The UPAS Diagnostics Mode (also known as DIAG#) runs the UPAS through diagnostic tests.

  • Page 60: Steps For Activating Diagnostic Mode

    11 Shut Sampler down via >5-second button hold. 12 Download or transfer the resulting log file, which contains the word diagnostic in the filename – and send to Access Sensor Technologies via email (support@accsensors.com). Access Sensor Technologies UPAS User Guide...

  • Page 61: Correcting An Incorrect Upas Serial Id

    If a Debug log was selected, the log file contains some lines of log data before the shutdown occurred. This data can be useful in determining the reason for the fault. Please contact Access Sensor Technologies technical support via Email to: support@accsenors.com...

  • Page 62: Frequently-Asked Questions

    Technologies Technical Support: https://accsensors.com. Analyzing data for PM particulates collected during the Sample? After each sampling session, collect all filter cartridges and relevant sampling information and send them to the program’s laboratory for analysis. Access Sensor Technologies UPAS User Guide...
  • Page 63 Can I use Filter Membranes with different ratings? Access Sensor Technologies has tested the filter membranes listed in Table 1, “Recommended UPAS Filter Membranes” on page 6. Use of other filter membranes can restrict air flow, shorten battery life, and not collect the necessary particulates.

  • Page 64: Upas Specifications

    Armband, clothing clip, lanyard, safety vest, etc. Fixed Mounting Standard tripod mount Data Logging Frequency Fixed at 30 seconds intervals Noise < 45 dB at 10” distance Filter Cartridge Quick interchangeable design for 37 mm filters Access Sensor Technologies UPAS User Guide...
  • Page 65 ~ 3.5 hours via USB cable (micro USB Connector) Connectivity Micro USB, microSD card, and Bluetooth wireless via a free App Mass-flow sensor, atmospheric temperature, pressure and relative humidity, GPS On-board Sensors PM concentration proxy (in development) Access Sensor Technologies UPAS User Guide...

  • Page 66: Warranty And Repair Service

    8 Warranty and Repair Service Limited Product Warranty Access Sensor Technologies (known hereafter as ‘AST’) provides a one-year limited warranty on the UPAS Ultrasonic Personal Air Sampler (known hereafter as ‘this product’). This limited warranty extends only to the original purchaser, for a period of one-year after product is received.
  • Page 67 1-year AST-paid service period. Ship the product with a copy of your bill of sale or other proof of purchase, your name, address, phone number, description of the problem(s), and the RMA number you have obtained to Access Sensor Technologies. Upon receiving the product, AST will repair or replace your product (at AST’s discretion) and will ship it back to you within two weeks (dependent on parts availability) via common carrier of AST’s...
  • Page 68 AST makes every effort to make sure all information on our website and in literature pertaining to the product is correct. Access Sensor Technologies UPAS User Guide...
  • Page 69 Access Sensor Technologies UPAS User Guide...
  • Page 70 First Edition, June 2018 UPAS v2.2 https://accsensors.com...

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