Aethlabs MicroAeth AE51 Manual de usuario

https://aethlabs.com

San Francisco, California

AethLabs

microAeth®Model AE51

Operating Manual

1. Introduction ..............................................................................................................................................4

1.1 Serial Number ..........................................................................................................................................4

1.2 Overview ..................................................................................................................................................4

1.3 Instrument Diagram .................................................................................................................................5

1.4 Technical Specications ..........................................................................................................................6

1.5 Symbols and Cautions ............................................................................................................................7

1.5.1 Explanation of Operation Symbols.................................................................................................7

1.5.2 Important Safeguards.....................................................................................................................7

1.5.2.1 Power Source ....................................................................................................................7

1.5.2.2 Object and Liquid Entry ....................................................................................................7

1.5.2.3 Accessories .......................................................................................................................7

1.5.2.4 Servicing ...........................................................................................................................8

1.5.2.5 Replacement Parts ............................................................................................................8

1.5.2.6 Other Warnings .................................................................................................................8

2. Conguration and Operation ..................................................................................................................9

2.1 Overview ..................................................................................................................................................9

2.2 Best Use Practices Recommendations ...................................................................................................10

2.2.1 Instrument Settings: Measurement TimeBase and Flow Rate .......................................................10

2.2.2 Recommended Settings of microAeth Model AE51 for Different Scenarios ..................................11

2.2.3 Contamination, Maintenance, and Cleaning of Sample Chamber .................................................12

2.3 Filter Media ..............................................................................................................................................13

2.3.1 General ..........................................................................................................................................13

2.3.2 Filter Strip Installation and Removal ..............................................................................................13

2.4 Power ......................................................................................................................................................14

2.5 microAethCOM PC Software Installation ................................................................................................ 14

2.6 Operation and Communication ...............................................................................................................16

2.6.1 microAeth Operation ......................................................................................................................16

2.6.2 Conguration of Instrument Operating Parameters .......................................................................17

2.6.2.1 microAeth Time & Time Sync ............................................................................................18

2.6.2.2 Flow Set Point ...................................................................................................................18

2.6.2.3 Timebase ...........................................................................................................................18

2.6.2.4 Operating Mode ................................................................................................................19

2.6.2.5 Shutdown Mode ................................................................................................................19

2.6.2.6 Sound Notications ...........................................................................................................19

2.6.3 Downloading Data ..........................................................................................................................19

2.6.4 Erasing Data ...................................................................................................................................20

2.6.5 Viewing and/or Analyzing Measurement Data ...............................................................................21

2.6.6 Data File Structure..........................................................................................................................22

2.6.7 Status Indications ...........................................................................................................................23

2.6.7.1 LED Status Indications ......................................................................................................23

2.6.7.2 Data File Status Codes .....................................................................................................23

2.7 Upgrading microAeth Operating System Firmware ................................................................................ 24

2.8 Manual Flow Calibration Procedure ....................................................................................................... 27

TABLE OF CONTENTS

microAeth®Model AE51 Operating Manual 5

AethLabs

4 microAeth®Model AE51 Operating Manual AethLabs

1.1 Serial Number

The model and serial number are located on the

back panel. Record the serial number in the space

provided below. Refer to these numbers whenever

you call for service.

Model No.: microAeth® Model AE51

Serial number: AE51-S__-_____-______

1.2 Overview

Real-time Aerosol Black Carbon Personal Exposure

Measurement Device

• Pocket-size, lightweight Aethalometer (250 g)

• Fast response: 1 second measurement timebase

• Low power consumption: 24 hour run time on

one charge

• Onboard data processing, logging and

diagnostics

• Flexible sampling options and wide dynamic

range

• Filter strips for accurate sample tracking

The microAeth Model AE51 is designed specically

for investigation of personal exposure to

carbonaceous particles found in ambient air. The

instrument is based on Aethalometer technology

that is widely used for studying indoor or outdoor

air quality, and for the mobile mapping of the air

quality impacts of localized sources. The instrument

provides high quality, short time resolved data

essential for assessing the real-time concentration of

Black Carbon aerosols in a micro-environment.

The package includes:

• microAeth Model AE51 Personal Exposure

Monitor

• Self-powered, LED source (880nm-IR), user-

selectable measurement timebase settings of 1,

10, 30, 60, 300 seconds, ow rate settings of 50,

100, 150, 200 ml/min with internal active mass

ow measurement and control

• Sample collected and analyzed on a lter strip

consisting of a T60 Teon coated borosilicate

glass ber media housed in a protective casing

• USB-based power charger with AC adapter

(100-500mA) for internal 5VDC lithium ion

battery.

• USB charging / interconnect cable

• Flexible conductive sample tubing (40 inches)

with swivel tube connector

• Pack of 5 sample lter strips

• CD containing

- microAethCOM communications software and

USB driver

- Operating Manual

• Quick Start Guide (hard copy)

For further information on this instrument or Black

Carbon measurement, please contact:

AethLabs

San Francisco, California

https://aethlabs.com

1. INTRODUCTION 1.3 Instrument Diagram

Inlet

Power button

Outlet

Running light (green)

Alert light (red)

Filter strip with locating pin

(behind cover)

Figure 1: microAeth front panel

Figure 2: Filter strip slot

Figure 3: microAeth rear panel

USB Port (behind cover)

Charge indicator light (yellow)

Serial number

6 microAeth®Model AE51 Operating Manual microAeth®Model AE51 Operating Manual 7

AethLabsAethLabs

1.4 Technical

Specications

Measurement Principle

Real-time analysis by measuring the rate of change

in absorption of transmitted light due to continuous

collection of aerosol deposit on lter. Measurement

at 880 nm interpreted as concentration of Black

Carbon (‘BC’).

Measurement Range

0-1 mg BC/m3, lter life time dependent on

concentration and ow rate setting:

avg. 5 µg BC/m3 for 24 hours @ 100 ml/min

avg. 100 µg BC/m3 for 3 hours @ 50 ml/min

avg. 1 mg BC/m3 for 15 min @ 50 ml/min

Measurement Resolution

0.001 µg BC/m3

Measurement Precision

±0.1 µg BC/m3, 1 min avg., 150 ml/min ow rate

Measurement Timebase (User setting)

1, 10, 30, 60, or 300 seconds

Flow Rate (User setting)

Internal pump provides 50, 100, 150, 200 ml/min,

monitored by mass ow meter and stabilized by

closed-loop control.

Sampling

3 mm spot created on lter strip containing insert of

T60 Teon-coated borosilicate glass ber lter material.

PM2.5 size selective inlet available.

Consumables

Filter strip: 1 lter strip per sampling event, typically

one per day.

Data Storage

4 MB internal ash memory, providing up to 1 month

data storage when operating on a 300 second

timebase, and 1 week when operating on a 60

second timebase.

Communications

USB connectivity to Windows®-based PC with

microAethCOM, or data stream via digital output

through mini USB port (command protocols can be

supplied).

Data Output

Internal data les are uploaded to microAethCOM

PC software and stored on local disk.

PC Software

microAethCOM software is included. Provides visual

interface including real-time BC mass concentration

values. Facilitates settings conguration, calibration

routines, downloading data, and uploading new

instrument rmware.

Dimensions

4.6 in (117 mm) L x 2.6 in (66 mm) W x 1.5 in

(38 mm) D

Weight

Approximately 0.62 lbs (280 g).

Power

Internal rechargeable lithium-ion battery.

Power Supply Adapter

Input: 100~240 VAC 50/60 Hz 0.2 A

Output: 5VDC / 0.5A

Charging Time

4 hours to full charge (using AC adapter, instrument

turned off).

Total Run Time (single battery charge)

Minimum 24 hours @ 300 second time base at 100

ml/min ow rate.

Operation Environment

0 ~ 40 °C operating, non-condensing.

Please note: Specications are subject to change without

notice.

1.5 Symbols and Cautions

1.5.1 Explanation Operation Symbols

Operation indicator

Charging indicator

Aerosol inlet

Aerosol outlet

System alert indicator

Filter strip orientation arrow (point

indicates orientation of upstream

face of lter strip)

On/Off

USB port

1.5.2 Important Safeguards

Please read these safety instructions completely

before operating the instrument, and keep this

manual for future reference. Carefully observe all

warnings, precautions and instructions on the

instrument, or as described in the operating manual

and product literature.

Do not expose the microAeth or its batteries to

sources of excessive heat such as sunshine or re.

1.5.2.1 Power Source

The microAeth should be operated only from the

type of power source indicated in the instrument

specications. If you are not sure of the type of

electrical power supplied to your home, consult your

dealer or local power company. For those devices

designed to operate from battery power, or other

sources, refer to the operating instructions. Also,

the connections on both ends of the USB interface

cable are designed to be inserted into the AC

power/charger adapter or the microAeth only one

way. These are safety features. If you are unable to

insert the AC plug fully into the outlet, try reversing

the plug. If the plug should still fail to t, contact

AethLabs.

1.5.2.2 Object and Liquid Entry

Never push objects of any kind into the AC power/

charger adapter or into the microAeth (except for

the lter ticket) through openings as they may touch

dangerous voltage points or short out parts that

could result in a re or electric shock. Never spill

liquid of any kind on the microAeth or its electrical

accessories. This instrument should not be exposed

to rain or moisture, and objects lled with liquids,

such as vases, should not be placed on this

instrument.

1.5.2.3 Accessories

Do not use accessories not recommended by the

manufacturer, as they may cause hazards.

1.5.2.4 Servicing

Use extra care when servicing the instrument

yourself as opening or removing covers exposes

sensitive internal hardware to potential damage.

Refer to all service documentation and trained,

authorized service personnel for assistance.

1.5.2.5 Replacement Parts

Only genuine AethLabs parts should be used in

the microAeth. Only trained, authorized service

personnel should make repairs or install replacement

parts.

Lithium-Ion batteries are recyclable and should

be disposed of properly. Caution: Do not handle

damaged or leaking Lithium-Ion batteries.

8 microAeth®Model AE51 Operating Manual microAeth®Model AE51 Operating Manual 9

AethLabsAethLabs

2. CONFIGURATION AND OPERATION

2.1 Overview

The AethLabs microAeth® Model AE51 is a high sensitivity, miniature, portable instrument designed for

measuring the optically-absorbing Black Carbon (‘BC’) component of aerosol particles. The instrument is

based on the well-established Aethalometer principle used for over 30 years in laboratory-sized analyzers.

The microAeth draws an air sample at a ow rate of 50, 100, 150 or 200 ml/min through a 3 mm diameter

portion of lter media. Optical transmission through the ‘Sensing’ spot is measured by a stabilized 880 nm

LED light source and photo diode detector. The absorbance (‘Attenuation, ATN’) of the spot is measured

relative to an adjacent ‘Reference’ portion of the lter once per timebase period. The gradual accumulation of

optically-absorbing particles leads to a gradual increase in ATN from one period to the next. The air ow rate

through the spot is measured by a mass ow sensor which is also used to stabilize the pump. The electronics

and microprocessor measure and store the data each period to determine the increment during each

timebase. This is then converted to a mass concentration of BC expressed in nanograms per cubic meter (ng/

m³) using the known optical absorbance per unit mass of Black Carbon material.

The instrument’s operating parameters are set up by an external software application (microAethCOM) and

uploaded to the microAeth by a USB interface cable. Operation is completely automatic after the instrument

is switched on. During operation, the microprocessor performs the optical measurements, measures and

stabilizes the air ow, calculates the BC mass concentration and records data to internal non-volatile memory.

The data may be downloaded at a later time by the same external software package.

The microAeth derives its power from an internal rechargeable battery. The same USB interface cable serves

to recharge the battery from either the USB port of a connected external computer, or an AC power supply.

The instrument will operate for 6 to 24 hours on a single charge, depending on operational settings.

2.2 Best Use Practices Recommendations

The small size and light weight of the microAeth® Model AE51 allow it to be used to gather data in a wide

range of operational scenarios, not always possible using larger instruments. Optimization of performance

across this breadth of applications requires an understanding of operational settings, precautions, and

maintenance procedures. The following recommendations provide general guidelines.

2.2.1 Instrument Settings: Measurement Timebase and Flow Rate

The microAeth can aquire data on ve timebase settings: 1, 10, 30, 60, and 300 seconds. The 1 second

timebase is hidden in the software and should only be used under special circumstances where a decreased

signal-to-noise ratio is acceptable. At this setting, instrumental noise is larger and typically requires post-

processing. The microAeth pump can operate at four sampling ow rate settings: 50, 100, 150, 200 ml/min.

The choice of these parameters affects the operation and data as follows:

Battery Run Time on Single Charge: Affected by ow rate and timebase.

NOTE: Battery life will gradually diminish after many cycles (~ 1 year of use). The following are approximate

runtimes but can vary based on individual microAeths and specic environments.

50 ml/min 100 ml/min 150 ml/min 200 ml/min

1 second > 21 hours > 18 hours > 14 hours > 12 hours

10 seconds > 21 hours > 19 hours > 15 hours > 12 hours

30 seconds > 23 hours > 19 hours > 15 hours > 13 hours

60 seconds > 28 hours > 24 hours > 20 hours > 15 hours

300 seconds > 30 hours > 24 hours > 21 hours > 15 hours

Individual Data Point Noise: At 150 ml/min, primarily affected by timebase setting.

1 second 60 seconds 300 seconds

< 5 ug/m3< 0.1 ug/m3< 0.05 ug/m3

Effects of Contamination, Vibration, and Impact: Primarily affected by timebase setting.

1 second 10 seconds 30 seconds 60 seconds 300 seconds

very large large moderate moderate least effect

microAeth®Model AE51 Operating Manual 11

AethLabs

10 microAeth®Model AE51 Operating Manual AethLabs

2.2.2 Recommended Settings of microAeth® Model AE51 for Different

Scenarios

Different Black Carbon measurement scenarios require different operational settings for optimum

performance. The 1 second timebase setting is a ‘Data Acquisition Mode’ intended for subsequent

processing, and should NOT be used for routine monitoring. Data collected on a 1 second timebase should

always be smoothed or averaged over longer periods, in order to optimize the signal-to-noise ratio at the

desired time resolution.

Longest Filter Life Shortest

50 ml/min 100 ml/min 150 ml/min 200 ml/min

1 s

‘Data Acquisition Mode’

for immediate emissions

and impacts at high

concentrations.

‘Data Acquisition Mode’

for emissions and

impacts in typical urban

and trafc environments.

‘Data Acquisition Mode’

for higher time

resolution at lower BC

concentrations.

‘Data Acquisition Mode’

for higher time

resolution at lower

BC concentrations

or shorter sampling

durations.

10 s

Trafc and transporation

impacts in high BC

concentrations.

Trafc and transporation

impacts.

Trafc and transporation

impacts at lower BC

concentrations.

Trafc and transporation

impacts at lower BC

concentrations.

30 s

Personal Exposure

Monitoring in high

BC concentrations.

Occupational Exposure.

Recommended Setting

for General Applications.

Personal Exposure

Monitoring. Trafc

impact. High time

resolution ambient

monitoring.

Personal Exposure

Monitoring. Trafc

impact. High time

resolution ambient

monitoring.

Personal Exposure

Monitoring. Trafc

impact. Ambient

monitoring. Higher

sensitivity for low BC

concentrations.

60 s

Personal Exposure

Monitoring.

Occupational Exposure.

High BC concentrations.

Personal Exposure

Monitoring. Indoor Air

Quality.

Personal Exposure

Monitoring. Indoor

Air Quality. Low BC

concentration.

Personal Exposure

Monitoring. Higher

sensitivity for low BC

concentrations.

300 s

Epidemiology.

Area monitoring. Indoor

air quality. High BC

concentration.

Epidemiology.

Area monitoring. Indoor

air quality.

Epidemiology.

Area monitoring. Indoor

air quality. Low BC

concentration.

Epidemiology.

Area monitoring. Indoor

air quality. Lowest BC

concentration. Lowest

data noise.

2.2.3 Contamination, Maintenance & Cleaning of Sample Chamber

If a loose particle of contamination enters the microAeth’s sample chamber or the instrument experiences

vibration or impact, the data will be degraded. Shaking or tapping a “dirty” instrument will create data

excursions that are far larger than those of a “clean” unit. These effects are amplied greatly at the shorter

timebase settings. Our recommendations for cleaning are based upon the likelihood of contamination and the

nature of use.

Contamination Probability for Various Use Scenarios

Cleaning Maintenance Recommendations (hours of operation)

Sampling Scenario Contamination

Probability

Dry, dusty environment High

Occupational settings with combustion exhaust High

Exposure to “oily” smokes such as biomass-burning plumes, 2-cycle engine exhaust High

Presence of suspended uff, bers, pollen High

Immediate vicinity of trafc and roadways Medium

Outdoor urban environments Medium

Outdoor rural environments (without dust, uff, pollen) Low

Residential indoor environments Low

Contamination Probability

High Medium Low

Mobile sampling with impacts: on person or in vehicle 100 200 400

Mobile sampling on cushioned support 150 300 500

Fixed sampling, moved from place to place during operation 500 800 1200

Fixed sampling, not moved during operation 800 1200 2000

12 microAeth®Model AE51 Operating Manual microAeth®Model AE51 Operating Manual 13

AethLabsAethLabs

2.3 Filter Media

IMPORTANT NOTE:

• Always make sure that a lter strip is

installed in the microAeth when it is

operating.

• Whenever the lter strip is exchanged, the

microAeth should be turned off to prevent

dust or debris from being drawn into the inlet

and analysis chamber.

2.3.1 General

The sample collection and analysis is performed on

a lter strip, consisting of a small section of lter

material held between and supported by a specially

designed lter holder to create the lter strip

assembly. As the aerosol sample is drawn through

the lter media by the instrument’s integrated,

internal sample pump, the aerosol sample collects

gradually on the lter medium to create a gray spot

3 mm in diameter. The microAeth determines the

attenuation of the source light as the accumulated

black carbon increases the optical density of the

lter spot. After the optical density reaches a certain

level, the lter strip must be replaced to maintain

measurement integrity.

To maintain a leak-free sample path, the lter strip is

clamped between two halves of the spring-loaded

sampling head. A release button opens the clamp to

allow the lter strip to be inserted and removed. A

locating pin in the head engages in a matching hole

in the lter strip holder to ensure correct placement.

2.3.2 Filter Strip Installation and

Removal

1. The sample deposit side of the lter strip is the

white side. When the lter strip is installed in

sample chamber, the white side of the lter strip

should be facing the same direction as indicated

by the white arrow on the faceplate of the

microAeth.

2. Hold the microAeth in your left hand so that the

lter chamber release button is on the bottom of

the enclosure (Figure 9) (all of the icons will be

right side up).

3. Loosen the rubber cover on the front of the

microAeth by pulling the tab away from the

instrument. This will expose the lter strip slot.

Figure 5: Top of

microAeth

Figure 6: Bottom of

microAeth with lter

strip release button.

Figure 7: White sample deposit side of lter strip

faces the top.

Figure 8: Metal side of lter strip faces the

bottom.

Figure 9: Inserting and removing lter strip while

depressing lter release button on bottom of

microAeth.

4. If there is a lter strip already installed, depress

the release button with your left thumb and pull

the lter strip out of the sampling head.

5. Install a new lter strip by pressing and holding

the release button and then inserting the new

lter strip into the sample chamber opening with

the white plastic side facing up (Figure 9).

6. Make sure to push the new lter strip all the way

into the slot and that the locating pinhole on the

lter strip is not visible.

7. Release the release button and verify the

locating pin has registered properly in the lter

strip locating hole.

8. Replace the rubber cover. A tight t is essential

to prevent the entry of contamination and stray

light into the sample chamber.

2.4 Power

The power switch is located on the front panel of the

instrument. There are two options for recharging:

• USB to PC-USB port (500mA): 4 hours to full

charge

• USB to AC-USB wall adapter (500mA): 4 hours

to full charge.

The instrument uses a USB-based power charger

(100-500mA) for internal 5VDC lithium ion battery.

The yellow charging light illuminates when the

microAeth is connected to an external power source

and is recharging the battery. When the battery is

fully charged, the yellow light turns off.

2.5 microAethCOM PC

Software Installation

The microAethCOM software application is designed

to install and operate on a PC using Windows® XP

with Service Pack 3, Windows® 7, and Windows®

8. All software components are included in the

installer named microAethCOM Install.exe which is

located on the CD included with the microAeth or

can be downloaded from the AethLabs website. This

installer will install the microAethCOM, manual ow

calibration software and the rmware le.

1. Do not connect the microAeth to the USB port

on the computer until the software installation is

complete.

2. Make sure that you have the necessary user

privileges on your computer to install software.

3. Locate and double click

microAethCOM Install.exe to start the install.

The installer will prompt you through the setup.

14 microAeth®Model AE51 Operating Manual microAeth®Model AE51 Operating Manual 15

AethLabsAethLabs

4. In order to install the microAethCOM software,

please read and accept the license agreement.

5. Please review changes to microAethCOM and

rmware.

6. Select the directory location where

microAethCOM, manual ow calibration

software and the rmware le should be installed

on the computer.

7. The communication drivers will need to be

installed next. The installer will prompt you

through this section of the setup.

8. Once all the correct drivers are installed, the

setup will be complete.

2.6 Operation and

Communication

Before starting a sampling run, it is recommended

that the user verify all parameter settings. A

description of each operating parameter and

its conguration is described in section 2.6.2

Conguration of Instrument Operating Parameters.

The microAeth startup sequence automatically

begins when the power is turned on. Sampling

and data collection begin starting the next minute

after the startup process is complete. A new

measurement data le is created for the new

sampling session. The microAeth will continue

sampling and storing data until the instrument is

shutdown. At shutdown, the data le is closed. Any

active sampling session and data le will also be

closed if data is downloaded or erased or if settings

are saved to the microAeth. In order to start a new

sampling session, the microAeth must be restarted.

Status indicator lights located on each end panel

of the microAeth provide information regarding the

instrument operating status. Please read section

2.6.8.1 LED Status Indications for more information.

2.6.1 microAeth Operation

IMPORTANT NOTE:

• Always make sure that a lter strip is

installed in the microAeth when it is

operating.

• Whenever the lter strip is exchanged, the

microAeth should be turned off to prevent

dust or debris from being drawn into the inlet

and analysis chamber.

• A new sampling session and data le is

created each time the microAeth is turned

on and completes the automatic startup

sequence.

• Any active sampling session and data le

will be closed if the microAeth is shutdown,

data is downloaded or erased, or if settings

are saved to the microAeth. In order to start

a new sampling session, the microAeth must

be restarted.

1. Make sure that a lter strip is installed in the

microAeth. Turn on the microAeth by depressing

the power button for 4 seconds until the

microAeth beeps for the second time and the

red and green LEDs illuminate together.

2. Release the power button and wait for a few

seconds. The pump will turn on and the LEDs

will then begin to blink on and off in unison

about every second until the beginning of the

next minute. When the LEDs stop blinking, the

instrument will chirp indicating the start of data

collection.

3. While the unit is operating, the green LED will

blink periodically. If the unit is set to store data

to its internal memory, the green LED will emit

single blinks every few seconds. If it has been

set to store data internally and stream data, the

green LED will blink twice every few seconds.

4. Start the microAethCOM software.

16 microAeth®Model AE51 Operating Manual microAeth®Model AE51 Operating Manual 17

AethLabsAethLabs

5. Connect the USB cable to the microAeth and

your computer.

6. After the microAeth establishes communication

with the microAethCOM software, the

connection status in the bottom left corner of

the main screen will change to Connected and

the microAeth serial number, status, and settings

will be displayed.

7. If the serial number, status, and settings are not

displayed, disconnect the USB cable from the

computer and reinsert it.

8. To shut down the microAeth through the

microAethCOM software, click Options then

Shut down microAeth. Depending on the current

settings of the microAeth, the power button on

the front of the instrument can be used to shut

down the instrument.

2.6.2 Conguration of Instrument

Operating Parameters

IMPORTANT NOTE:

• The microAeth will not collect data with new

saved settings until it has been restarted.

All instrument parameters are congured through

the microAethCOM user interface. The various

parameters are accessed through Settings in the

Options menu on the tool bar.

1. Turn on the microAeth.

2. Start the microAethCOM software.

3. Connect the USB cable to the microAeth and the

computer. Wait until the microAeth establishes

communication with microAethCOM.

4. Click Options then Settings

5. On the Settings screen, the microAeth can be

congured.

6. When all settings are selected as desired, click

the Save settings button.

7. Once the settings have been saved, you will

be prompted to shut down the microAeth. The

microAeth will not collect data with the new

saved settings until it has been restarted.

18 microAeth®Model AE51 Operating Manual microAeth®Model AE51 Operating Manual 19

AethLabsAethLabs

2.6.2.1 microAeth Time & Time Sync

The time on the microAeth is displayed. In order to

sync the time on the microAeth with the PC time,

click the Sync with PC time check box.

It is very important to conrm the date and time

of the PC prior to synchronizing to the microAeth.

Once conrmed, it is good operating practice

to always synchronize the date and time when

conguring the microAeth before starting a new

sample session.

2.6.2.2 Flow Set Point

The ow set point permits the user to select a ow

rate set point of 50, 100, 150, or 200 ml/min.

We recommend using lower ows in areas with high

BC concentrations, and higher ow rates when

maximum sensitivity is required in areas of low BC

concentration. A lower ow rate should also be

selected for longer run times and extended battery

life. Please read section 2.2 Best Use Practices

Recommendations for more information.

2.6.2.3 Timebase

The timebase permits the user to select an analysis

timebase period of 1, 10, 30, 60, or 300 seconds.

We recommend 30 or 60 seconds for most ‘human

exposure’ or ‘ambient monitoring’ use. Faster

timebases will result in higher noise on each

measurement point, and are most useful either for

direct source monitoring (tailpipe analysis) or for

other applications requiring extremely rapid data. A

300 second timebase can be used to extend battery

life and run time. Please read section 2.2 Best Use

Practices Recommendations for more information.

2.6.2.4 Operating Mode

The operating mode permits the user to congure

data storage and streaming options.

• Store to ash saves data to the internal memory

only.

• Flash and streaming saves data to the internal

memory and outputs a continuous data stream

through the USB port.

2.6.2.5 Shutdown Mode

The shutdown mode permits the user to congure

how the instrument is shutdown.

• Simple mode will allow the microAeth to be

shut down by depressing the power button for 3

seconds.

• USB only mode will only allow the microAeth

to be shut down using the microAethCOM

software.

• Secure mode will allow the microAeth to

be shut down by pressing and releasing the

power button three times in succession. The

smoothly-timed sequence is coordinated by

a simultaneous beep and blink of the red and

green LED indicator lights.

Each cycle of the Secure mode takes about 1

second as follows:

1. Press and hold the power button.

2. When you hear/see the rst ‘beep/blink’

release the button quickly.

3. When you hear/see the next ‘beep/blink’

quickly press and hold the power button.

4. When you hear/see the next ‘beep/blink’

release the button quickly.

5. When you hear/see the next ‘beep/blink’

quickly press and hold the power button.

6. When you hear/see the next ‘beep/blink’

release the button quickly.

7. The microAeth will then shut down.

2.6.2.6 Sound Notications

The sound notications setting permits the user

to select if the audible notications issued by the

microAeth are turned On or Off.

2.6.3 Downloading Data

1. Turn on the microAeth.

2. Start the microAethCOM software.

3. Connect the USB cable to the microAeth and the

computer. Wait until the microAeth establishes

communication with microAethCOM.

4. Click the Download data button to download

the data stored on the internal memory of the

microAeth.

5. Select .DAT or .CSV data le type to download.

6. Select the directory to save the data. The data

will be saved in a folder named AE51-SX-XXX-

YYMM in this directory.

7. Wait until the download has completed. The

progress bar in the bottom left corner of the

main screen will show you the progress of the

download. The status window will also inform

you when the download is complete.

Otros manuales para microAeth AE51

Tabla de contenidos

Otros manuales de Instrumento de medición de Aethlabs

Aethlabs

Aethlabs microAeth MA Series Manual de usuario

Aethlabs

Aethlabs microAeth AE51 Manual de usuario

Aethlabs

Aethlabs microAeth MA200 Manual de usuario

Manuales populares de Instrumento de medición de otras marcas

Suaoki

Suaoki D40 Manual de usuario

Elster

Elster BK-G1.6 Manual de usuario

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manual

Duratool

Duratool D03128 Manual de usuario

Vega

Vega VEGAPULS 65 Manual de usuario

Tonghui

Tonghui TH2618B Manual de usuario

Tenmars

Tenmars TM-801 Manual de usuario

MSR

MSR 145 Manual de usuario

TPS

TPS WP-82 Manual de usuario

ELMETRON

ELMETRON CP-511 Manual de usuario

PCB Piezotronics

PCB Piezotronics 003C30 Manual de usuario

Tenma

Tenma 72-10465 Manual de usuario

Endress+Hauser

Endress+Hauser Proline Promag 50 Especificaciones técnicas

Siemens

Siemens SITRANS F Coriolis FCT030 Manual de lista de piezas

KLINGER

KLINGER CMF V Series Manual de usuario

EXFO

EXFO FTB-2 Manual de operación y mantenimiento

Keysight

Keysight M8290A Manual de usuario

ADTEK

ADTEK MW-5 Manual de usuario