Access Sensor Technologies UPAS v2 User manual

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

0 Access Sensor Technologies UPAS User Guide
Notices
© Access Sensor Technologies LLC, 2018
No part of this manual may be reproduced in any form or by any means (including electronic storage and
retrieval or translation into a foreign language) without prior agreement and written consent from Access
Sensor Technologies as governed by United States and international copyright laws.
Manual Part Number:
UPAS v2.2
Edition:
First Edition, June 2018
Published by:
Access Sensor Technologies LLC
Fort Collins, CO
Sales and Technical Support:
on the web: https://accsensors.com
by email: [email protected]
Safety Notices
Do not use this product in any manner not specified by the manufacturer. The protective features of this
product must not be impaired if it is used in a manner not specified in the operation instructions.
Do Not Remove Instrument Cover
There are no operator serviceable parts inside. Refer servicing to Access Sensor Technologies.
In Case of Damage
Instruments that appear damaged or defective should be made inoperative and secured against unintended
operation until they can be repaired by qualified service personnel

Access Sensor Technologies UPAS User Guide 1
Contents
1 Introduction
What comes with my UPAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
What is not provided . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
UPAS at a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Recommended UPAS Filter Membranes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2 UPAS Physical Setup
General Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Power On/Off Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Turning the UPAS On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Turning the UPAS Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Installing / Removing Inlet, Filter Cartridge, and Sampling Filter . . . . . . . . . . . 11
Removing / Installing the Cyclone Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Removing / Installing the Filter Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Removing / Installing the Sampling Filters and Chain of Custody . . . . . . . 12
Cleaning the UPAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning the Outer Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning the Cyclone Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning the 37 mm Filter Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Optional – Greasing the Cyclone Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Charging the UPAS Internal Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Charging the Battery when UPAS powered ON and Idle . . . . . . . . . . . . . . . . 20
Charging the Battery while UPAS Actively Sampling . . . . . . . . . . . . . . . . . . . 20
Using an External Battery to Extend Available Runtime . . . . . . . . . . . . . . . . 21
Installing / Removing the microSD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Mounting the UPAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Mounting the UPAS for Personal Breathing Zone Sampling . . . . . . . . . . . . 22
Mounting the UPAS for Fixed Site Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Flow Rate Verification and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Required Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Measuring Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Updating / Flashing the UPAS Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Firmware Release Notes, Installation Procedure for UPAS v2 Sampler 26

2 Access Sensor Technologies UPAS User Guide
3 Sample Run Setup / Initialization on the Mobile Device App
Installing and Updating the Mobile Device Application . . . . . . . . . . . . . . . . . . . . .30
Install and Run the App on an Android Operating System . . . . . . . . . . . . . . .30
Install and Run the App on an Apple iOS Operating System . . . . . . . . . . . . .35
Sample Run Setup and Programming in the App (Android and iOS) . . . . . . . . .37
Setting a Start Time for the Next Sample Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Updating the Mobile Device App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Adjusting the Flow Rate using the Flow Offset in the App . . . . . . . . . . . . . . . . .45
UPAS App Lock to Hold Setup Parameters (Optional) . . . . . . . . . . . . . . . . . . . . . .46
4 Accessing and Interpreting Sample Log Files
Transfer the Log File to a PC from the microSD Card . . . . . . . . . . . . . . . . . . . . . .47
Download App Log File via Bluetooth from Android Devices . . . . . . . . . . . . . . .47
Download App Log Files via Bluetooth from iOS Devices . . . . . . . . . . . . . . . . . .48
Download Log Files from IOS Device to Mac Computer . . . . . . . . . . . . . . . . .48
For PC computers, connect IOS device to PC Computer . . . . . . . . . . . . . . . .49
Interpreting Log File Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5 Diagnostics and Troubleshooting
Ensuring Adequate Battery Endurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Interpreting UPAS Status / Shutdown Mode Codes . . . . . . . . . . . . . . . . . . . . . . .55
Acquiring / Sending Debug Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Conducting a Diagnostic Test (DIAG#) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Understanding DIAG# mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Steps for Activating Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Correcting an Incorrect UPAS Serial ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
UPAS shuts down immediately after starting a new sample run . . . . . . . . . . .59
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 3
1 Introduction
Access Sensor Technologies’ Ultrasonic Personal Air Sampler (UPAS) provides a
new paradigm of streamlined, low-cost exposure assessment to indoor air
pollution. The UPAS is a self-contained filter-integrated sampler featuring
valve-less ultrasonic pumping technology. This technology provides substantial
reductions in size, weight, noise, and cost along with increased durability over
traditional sampling equipment. The UPAS is silent and light enough to be worn in
the subject’s breathing zone, but can also be deployed in fixed site sampling
scenarios.
The UPAS system consists of two components:
• A hardware component which can be worn in the subject’s breathing zone or
mounted on a tripod (not included) for general environmental testing.
• A software component with a Bluetooth®interface allows programming,
control and data download via a mobile Android or Apple iOS application.
This User Guide describes both the hardware and the software components. It
explains how to prepare and program the 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.

4 Access Sensor Technologies UPAS User Guide
What comes with my UPAS
Your UPAS comes complete with a kit containing the following items. If you are
missing any items, contact Access Sensor Technologies.
Optional Accessories
Contact Access Sensor Technologies to purchase these accessories.
What is not provided
Description Qty
O-Ring replacement kit 1
Filter cartridges 2
PM2.5 Cyclone Inlet assembly 1
microSD Card 1
Description
Flow Measurement Adapter (for flow verification),
Additional Filter cartridges
Additional size selective Cyclone Inlet assemblies
Description Comments
USB Cable Optional USB Type A connector to Micro USB connector
Flow Meter/ Primary Required only for flow verification.
Lanyard, tripod, chest harness, armband, etc.

Access Sensor Technologies UPAS User Guide 5
UPAS at a Glance
The following photos show the UPAS and identify several key components,
There are no user-serviceable components inside. Do not attempt to open the
UPAS case. Return the UPAS to Access Sensor Technologies for repair.
Figure 1 UPAS with Cyclone Inlet Cap Removed
Hole for
attaching
a lanyard
Power button with
status indicator
light. Press and
hold for five
seconds to turn
UPAS on or off.
Micro-USB port
Micro-SD
card slot
1/4” -20 UNC
threaded insert
for mounting on
a standard
camera tripod or
similar mount.
Cyclone Inlet
(PM2.5 version
shown)
Upper half of
37 mm Filter
Cartridge
(PM2.5 specific
version shown)
Lower half of
37 mm Filter
Cartridge
(shown with filter
in place)
Optional (sold separately)
Flow-Measurement
Adapter. See “Flow Rate
Verification and
Adjustment” on page 24.
NOTE:

6 Access Sensor Technologies UPAS User Guide
Recommended UPAS Filter Membranes
Table 1 Filter Membranes
General
Gravimetric analysis
Dissolvable (for chemical Analysis)
Scannable via XREF EDS, etc.
Microscopy Analysis
Biological Sampling
Relative Flow Resistance
(lower means longer UPAS battery life)
Manufacturer Product
Family Product
ID Filter Media Material Type
Filter Media Pore Size ( m)
Support Ring Material
+ – + + + 1.0 Tisch Scientific PTFE SF17382 PTFE (Teflon) membrane 5.0 none + – + + + 1.2 GE Lifesciences
Whatman TE 38 10411108 PTFE (Teflon) membrane 5.0 none
+ – + + + 1.3 Pall Laboratory Teflo R2PJ037 PTFE (Teflon) membrane 2.0 PMP Ring + – + + + 1.7
Measurement Technology Laboratories (MTL)
PTFE PT37P-PF03 PTFE (Teflon) membrane 2.0 FEP Ring
+ ± + + + 4.2 SKC PVC 225-5-37 PVC membrane 5.0 none + – + – – 5.0 Pall Laboratory Tissuquartz 2500QAT-UP Quartz fiber (unbonded) - none + – + – – 5.1 Pall Laboratory EMFAB TX40HI20WW-
37 mm
Borosilicate microfiber w/ woven glass, PTFE bonded -none
+ – + + + 6.6 Pall Laboratory Zefluor P5PJ037 PTFE (Teflon) membrane 2.0 PTFE Ring ± + + + + 10.0 SKC MCE 225-1938 Mixed cellulose ester (MCE)
membrane 5.0 none
± + + + + 16.2 SKC MCE 225-1939 Mixed cellulose ester (MCE)
membrane 0.8 none
± + + + + 16.2 SKC MCE 225-334 Mixed cellulose ester (MCE)
membrane 0.8 none
± + + + + 17.7 EMD Millipore MF AAWP03700 Mixed cellulose ester (MCE)
membrane 0.8 none
± + + + + 19.0 GE Lifesciences
Whatman ME27 10400909 Mixed cellulose ester (MCE)
membrane 0.8 none
+means typical use, ±means optional use, –means not typically used.

Access Sensor Technologies UPAS User Guide 7
2 UPAS Physical Setup
General Setup
The UPAS Sampler monitors air pollution by passing ambient air at a regulated
flow rate through a size-selective inlet and then a 37 mm filter inside of a
cartridge.
An iOS (Apple) or Android mobile device application (the “App”) programs
parameters into the UPAS and initializes sampling runs. You can assign a unique
sample name and ‘filter cartridge ID” for each sample, and transfer log files to a
computer for data analysis, and more.
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.

8 Access Sensor Technologies UPAS User Guide
Power On/Off Sequence
Turning the UPAS On
Prior to powering up the UPAS, ensure that you have installed the microSD card
and that you have properly installed a filter cartridge and Cyclone Inlet cap.
Press the power button firmly until it clicks. Continue holding until the LED light
turns on (about five seconds). Release the button. Note that the pushbutton
requires an uninterrupted hold down of at least five seconds. If pressing the
pushbutton is interrupted, the UPAS does not power on; repeat the process.
The button light should briefly be a blue/cyan color indicating that the unit is
powering up. Watch the power button for the power-on status indicator
sequence. Refer toFigure 2 on page 9 and Table 2 on page 10 for the power-on
sequence.
CAUTION: Never run the UPAS without a 37 mm filter cartridge with filter in place.
It is possible to get contaminants in the unit. Dust and other particulates may
damage the pumping elements.
Turning the UPAS Off
Press the power button firmly until you feel a click. Continue to hold it in this state
for at least five seconds, until the 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.