TSI Instruments 8525, P-TRAK Ultrafine Operation And Service Manual

Indoor Air Quality

TRAKPROTM Data Analysis Software enclosed

Operation and Service Manual

Model 8525

P-T

RAK

®

Ultrafine

Particle Counter

1980380, Revision J

December 2006

Model 8525
P-TRAK® Ultrafine

Particle Counter

Operation and Service
Manual

December 2006

P/N 1980380, Revision J

SHIP TO/MAIL TO:

TSI Incorporated
500 Cardigan Road
Shoreview, MN 55126-3996
USA

U.S.
Technical Support:

[phone]/[phone]

Fax:

[phone]

E-mail:

[e-mail]

[e-mail]

E-mail address:

[e-mail]

Website:

http://www.tsi.com

INTERNATIONAL

Technical Support:

(001 651) 490-2811

Fax:

(001 651) 490-3824

E-mail:

Copyright ©

TSI Incorporated / 1999–2006/ All rights reserved.

Address

TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA

Fax No.

[phone]

LIMITATION OF WARRANTY AND LIABILITY (effective July 2000)

Seller warrants the goods sold hereunder, under normal use and service as described in the
operator's manual, shall be free from defects in workmanship and material for twenty-four (24)
months, or the length of time specified in the operator's manual, from the date of shipment to the
customer. This warranty period is inclusive of any statutory warranty. T his limited warranty is
subject to the following exclusions:
a. Hot-wire or hot-film sensors used with research anemometers, and certain other

components when indicated in specifications, are warranted for 90 days from the date of
shipment.

b. Parts repaired or replaced as a result of repair services are warranted to be free from

defects in workmanship and material, under normal use, for 90 days from the date of
shipment.

c. Seller does not provide any warranty on finished goods manufactured by others or on any

fuses, batteries or other consumable materials. Only the original manufacturer's warranty
applies.

d. Unless specifically authorized in a separate writing by Seller, Seller makes no warranty

with respect to, and shall have no liability in connection with, goods which are
incorporated into other products or equipment, or which are modified by any person other
than Seller.

The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated
herein. NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE.

TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OF THE USER OR
BUYER, AND THE LIMIT OF SELLER'S LIABILITY FOR ANY AND ALL LOSSES,
INJURIES, OR DAMAGES CONCERNING THE GOODS (INCLUDING CLAIMS BASED
ON CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) SHALL
BE THE RETURN OF GOODS TO SELLER AND THE REFUND OF THE PURCHASE
PRICE, OR, AT THE OPTION OF SELLER, THE REPAIR OR REPLACEMENT OF THE
GOODS. IN NO EVENT SHALL SELLER BE LIABLE FOR ANY SPECIAL,
CONSEQUENTIAL OR INCIDENTAL DAMAGES. SELLER SHALL NOT BE
RESPONSIBLE FOR INSTALLATION, DISMANTLING OR REINSTALLATION COSTS
OR CHARGES. No Action, regardless of form, may be brought against Seller more than 12
months after a cause of action has accrued. The goods returned under warranty to Seller's
factory shall be at Buyer's risk of loss, and will be returned, if at all, at Seller's risk of loss.

Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY AND
LIABILITY, which contains the complete and exclusive limited warranty of Seller. This
LIMITATION OF WARRANTY AND LIABILITY may not be amended, modified or its terms
waived, except by writing signed by an Officer of Seller.

Service Policy

Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our
customers, our service policy is designed to give prompt attention to any pr oblems. If any
malfunction is discovered, please contact your nearest sales office or representative, or call TSI
at [phone] (USA) or (001 651) 490-2811 (International).

ii

CONTENTS

SAFETY INFORMATION.........................................................................V

1 UNPACKING AND PARTS IDENTIFICATION..............................1

Unpacking the P-TRAK Ultrafine Particle Counter..................................1

Optional Accessories ...............................................................................4

Spare/Replacement Parts..........................................................................5

2 SETTING UP .........................................................................................7

Supplying Power to the P-TRAK ..............................................................7

Installing the Batteries..........................................................................7

Using the AC Adapter..........................................................................8

Charging and Installing the Alcohol Wick ..............................................9

Cautions Before Proceeding.................................................................9

Locating and Identifying Components...............................................10

Filling the Alcohol Fill Capsule.........................................................10

Installing the Cartridge into the P-TRAK ............................................12

Cleaning Up and Final Cautions ........................................................13

Attaching the Inlet Screen Assembly, Sample Tube, and

Telescoping Probe to the Instrument..................................................

Attaching the Shoulder Strap (optional) ................................................16

Instrument Software and Communications Setup..................................16

Setting up TRAKPRO Data Analysis Software....................................16

Connecting the P-TRAK to the Computer...........................................17

Setting up the Communications Port..................................................17

Connecting the Optional Portable Printer..............................................18

14

3 OPERATION .......................................................................................19

Overview................................................................................................19

Turning the Instrument On.....................................................................19

Tilting the Instrument ............................................................................19

Daily Zero Check...................................................................................21

P-TRAK Keypad .....................................................................................21

Main Menu.............................................................................................22

Particle Concentration........................................................................23

Sample Mode......................................................................................23

Recording and Saving a Single Data Point...................................23

Changing the Location Label........................................................24

Setup Mode ........................................................................................24

Statistics........................................................................................24

Logged Test Statistics ...............................................................25

Single Point Statistics................................................................26

Log Interval...................................................................................26

Audio.............................................................................................27

Time/Date......................................................................................28

iii

Programming Time/Date Using TRAKPRO...................................29

Backlight....................................................................................... 29

Clear Memory...............................................................................30

LOG MODE.......................................................................................31

Log Mode 2 and 3..................................................................................31

Sample Protocol for Log Mode 2 or 3...................................................35

Memory Considerations.........................................................................38

Particle Sampling Configurations ..........................................................38

Sampling Through Inlet Screen, Tube, and Probe Assembly............39

Sampling Through Inlet Screen and Sample Tube.............................39

Sampling Through Inlet Screen Assembly Only................................40

4 MAINTENANCE.................................................................................41

Maintenance Schedule...........................................................................41

Daily Zero Check...................................................................................41

Recharging the Alcohol Wick ...............................................................42

Alcohol Cartridge..................................................................................42

Changing the Alcohol Wick...............................................................42

Removing the Wick from the Cartridge............................................. 43

Re-assembling the Alcohol Cartridge................................................44

Cleaning Inlet Screen Assembly............................................................45

5 TROUBLESHOOTING......................................................................47

APPENDIXES

A SPECIFICATIONS.............................................................................

51

B MATERIAL SAFETY DATA SHEET: ISOPROPYL

ALCOHOL...........................................................................................

53

To obtain any of the listed Application Notes, contact TSI at:
U.S. [phone]/[phone], Fax: [phone]
International (001 651) 490-2811, Fax: [phone]

These Application Notes can also be found under TSI’s web site:

http://www.tsi.com

iv Contents

Safety Information

When operated according to the manufacturer’s instruction, this device is a
Class I laser product as defined by U.S. Department of Health and Human
Services standards under the Radiation Control for Health and Safety Act of

1968. A certification and identification label like the one shown below is
affixed to each instrument.

May 2006

THIS LASER PRODUCT COMFORMS
TO 21 CFR 1040.10 BUREAU OF
RADIOLOGICAL HEALTH AND
SAFETY REGULATIONS.

TSI INCORPORATED
500 CARDIGAN ROAD
SHOREVIEW, MN 55126 USA

There are no user-serviceable parts inside this instrument. Performing
services other than those described in this manual may result in exposure to
harmful (invisible) laser radiation. A warning label like the one shown
below is affixed to the internal laser device.

DANGER: INVISIBLE LASER

RADIATION WHEN OPEN. AVOID

DIRECT EXPOSURE TO BEAM.

WARNING: NO USER SERVICEABLE

PARTS INSIDE. REFER SERVICING

TO QUALIFIED PERSONNEL.

v

vi Safety Information

Chapter 1

Unpacking and Parts Identification

Unpacking the P-TRAK Ultrafine Particle Counter

Carefully unpack the Model 8525 P-T
the shipping container. Use the tables and illustrations belo w to make certain
that there are no missing components. Contact TSI immediately if anything
is missing or damaged.

1

RAK Ultrafine Particle Counter from

3

2

4

Figure 1-1: Model 8525 P-TRAK Ultrafine Particle Counter

With Inlet Probe Assembly, Battery Pack, and Batteries

Quantity Item Description Part/Model Reference

1 P-TRAK Ultrafine Particle Counter N/A 1
1 Probe assembly, consisting of

telescoping probe,
sample tube, and

inlet screen assembly
1 Battery holder 801623 3
6 Battery, AA, alkaline N/A 4
1 Carrying case 801613 (not shown)

801622
801615
801616

2

1

2

1

3

4

Figure 1-2: Alcohol Fill Capsule with Storage Cap,

Alcohol Cartridge, Alcohol Bottles and Shoulder Strap

Quantity Item Description Part/Model Reference

1 Alcohol fill capsule and storage

cap.
1 Alcohol cartridge 801624 2
16 30 ml alcohol bottles (1 shown) 2918011 3
1 Shoulder strap 801621 4

1083070 1

2

Chapter 1

2

4

3

1

Figure 1-3: Mesh Storage Bag with Spare W icks, Computer

Cable, Zero Filters and DB9/DB25 Adapter

Quantity Item Description Part/Model Reference

1 Mesh bag N/A 1
2 Spare wick kit N/A 2
1 Computer cable, RJ45/DB9 800563 3
2 HEPA zero filter, with adapter 801625 4

Unpacking and Parts Identification

3

1

3

Figure 1-4: Calibration Certificate, Operation and

Service Manual, T

Quantity Item Description Part/Model Reference

1 Calibration Certificate N/A 1
1 Operation and Service Manual 1980380 2
1 TRAKPRO Software 1090014 3

Optional Accessories

The following table lists optional accessories available for the P-T
Ultrafine Particle Counter.

Quantity Item Description

1 AC adapter for P-TRAK (115V only)
1 Portable printer

RAKPRO Software

2

RAK

4

Chapter 1

Spare/Replacement Parts

The following items may be purchased as spare or replacement parts.

Item Description Part Number

Alcohol wicks with screens (Pkg. of 10) 8023
Tubing, sample, 4’ x 1⁄8”, Tygon
Inlet screen assembly 801616
Alcohol, 16 qty., 30 ml bottles 2918011

801615

Unpacking and Parts Identification

5

Chapter 2

Setting Up

Supplying Power to the P-T

The Model 8525 P-T
of two ways. The standard configuration instrument is sold with a battery
holder containing 6, AA alkaline batteries. An optional AC adapter may also
be used to power the instrument when operating in a fixed location.

Installing the Batteries

To install the battery holder, first install the 6 individual AA batteries
into the pack, noting the battery polarity as marked on the insid e of the
battery holder. Remove the battery compartment door by pressing in and
pulling out on the two locking tabs. Next, install the battery pack
(battery side down) into the battery compartment as shown in
Figure 2-1, putting the top of the pack (the side with the two contacts
extending from the body of the pack) down first and snapping the rest of
the pack in place. Finally, replace the battery compartment door.

RAK Ultrafine Particle Counter may be powered in one

RAK

Figure 2-1: Install Battery Pack into Battery Compartment

CAUTION

Avoid forcing the battery pack into place. The

!

battery pack fits correctly in only one orientation.
When installed properly, the batteries will face
down into the compartment.

7

1

2

3

45

6

Figure 2-2: The Back of the Instrument

1. On/Off switch 4. AC Adapter socket

2. Inlet quick-connect fitting 5. Headphone jack

3. Communications port 6. Alcohol cartridge

Using the AC Adapter

The AC adapter allows you to power the P-T
outlet. When using the AC adapter, the batteries (if installed) will be
bypassed. The AC adapter will not charge the batteries.

The P-T

RAK has an internal, non-user accessible battery that is used for

battery back-up of logged data when the instrument is turned off.
Removing/changing the alkaline batteries or disconnecting the AC
adapter will not cause data to be lost. This backup battery will last for
years. TSI will install a new battery, if necessary, when the unit is
returned to the factory for service.

RAK from an AC wall

8

Chapter 2

Charging and Installing the Alcohol Wick

Cautions Before Proceeding

WARNING

!

Note: Always recap alcohol containers immediately to prevent

Isopropyl Alcohol is hazardous material. Do not ingest

or allow alcohol to contact your eyes or skin. Refer to
the Material Safety Data Sheet (MSDS) located in the
box of alcohol for handling precautions and first aid
procedures.

absorption of moisture and the escape of fumes.

Caution

!

The P-T
1 ml per hour. The alcohol is used to grow microscopic particles in the
air into larger droplets that are easier to detect and count. Refer to the
TSI web site, for details on how the P-T

The isopropyl alcohol that is required to properly operate the P-T
must be very high purity "reagent grade" alcohol. Isopropyl alcohol that
is available from pharmacies, drug stores, or other consumer outlets is
low purity and usually contains significant percentages of water and
other substances that can damage the P-T

Note: It is essential to use isopropyl alcohol that is 99.5% pure

Maintaining an adequate alcohol supply inside the P-T

The CO sensor in some models of TSI IAQ monitors may be

adversely affected when exposed to isopropyl alcohol vapors
released from TSI instruments utilizing condensation particle
counting (CPC) technology. For maximum performance, keep
CO sensors away from CPC-based instruments utilizing
isopropyl alcohol.

RAK consumes high-purity isopropyl alcohol at a rate of about

RAK works (www.tsi.com).

RAK.

or better. Do not use isopropyl alcohol from any source
other than TSI or a TSI-approved supplier. Problems
caused by the use of unapproved alcohol are not covered
under warranty.

is critical to its operation and requires strict adherence to
the directions that follow.

RAK

RAK

Setting Up

9

Locating and Identifying Components

To add alcohol to the P-TRAK you must first identify and locate the
alcohol related components and accessories that are included with the
instrument (refer to Figure 1-2, for more information). You will need
the following items:

• Isopropyl Alcohol

• Alcohol Fill Capsule

• Storage Cap

• Alcohol Cartridge

Isopropyl alcohol is supplied by TSI in 30 ml plastic bottles. The
alcohol fill capsule is located in the P-T
cartridge will also be either in the P-T

RAK carrying case. The alcohol

RAK cartridge cavity or in the

alcohol fill capsule, whichever one is not holding the storage cap. The
storage cap should be either sealing the alcohol fill capsule or inserted
into the P-T

RAK cartridge cavity.

Filling the Alcohol Fill Capsule

1. Turn the P-T

2. Open the alcohol fill capsule by twisting the storage cap (or alcohol

cartridge)

RAK off.

1

⁄8 turn counter-clockwise. Set the storage cap (or alcohol

cartridge) down on a clean surface, with the end standing up, as
shown in Figure 2-3.

Figure 2-3: Alcohol Cartridge and Storage Cap

10

Chapter 2

3. Open a bottle of alcohol. Invert the bottle and insert the nozzle end

into the alcohol fill capsule as far as possible to make certain that
you cannot inadvertently spray alcohol anywhere except down into
the capsule.

Fill Line

Figure 2-4: Alcohol Fill Capsule

4. Squeeze alcohol into the alcohol fill capsule until the liquid level is

even with the scribed fill-line near the base (Figure 2-4). Recap the
alcohol bottle.

5. Make certain the alcohol cartridge is clean! Insert the alcohol

cartridge into the alcohol fill capsule by aligning the groove with
the pin and turning

1

⁄8 turn (clockwise) until it locks into place

(Figure 2-5).

Setting Up

11

Figure 2-5: Insert Alcohol Cartridge into Fill Capsule

6. Set the alcohol fill capsule down and wait a few minutes while the

wick inside the cartridge soaks up alcohol.

Installing the Cartridge into the P-T

RAK

1. Remove the alcohol cartridge from the fill capsule and gently shake

it to allow excess alcohol to drain back into the capsule. Stop when
excess alcohol is no longer dripping. It is not necessary to wait until
the outside surface of the alcohol cartridge is dry.

2. Insert the cartridge into the cartridge cavity on the P-T

RAK. It

should slide in easily with little effort. Do not force it! Align the
tab on the alcohol cartridge with the corresponding tab on the

RAK, located just above the cartridge cavity.

P-T

3. As you approach full insertion, firmly twist the alcohol cartridge

clockwise about

1

⁄8 turn. It should snap into position.

12

Chapter 2

Figure 2-6: Insert Alcohol Cartridge into P-TRAK

Cleaning Up and Final Cautions

1. Recap the alcohol fill capsule using the storage cap.

Note: Always recap the alcohol fill capsule and other containers

immediately to prevent absorption of moisture and the
escape of fumes. Dispose of any alcohol that is visibly
contaminated.

2. When the P-T

RAK is stored in the carrying case, you should store

the alcohol cartridge in the alcohol fill capsule. The alcohol fill
capsule is designed to be a safe transportation and storage container
for alcohol. The alcohol cartridge can be left soaking in alcohol
indefinitely. Also, install the storage cap into the cartridge cavity to
prevent dirt or lint from getting inside the P-T

3. Never transport or store the P-T

RAK with the alcohol cartridge

RAK.

inside it. Flooding of the optics could occur.

4. Always keep the alcohol cartridge clean.

5. Never leave the cartridge cavity open longer than necessary. Use

the storage cap to cover the cartridge cavity when the P-T
transported or stored.

Setting Up

RAK is

13

6. Keep the storage cap and alcohol cartridge clean. Always set them

down with the end standing up. These precautions prevent dirt or
debris from entering the instrument and causing operational
problems.

Attaching the Inlet Screen Assembly, Sample Tube, and Telescoping Probe to the Instrument

The normal sampling configuration for the P-T

RAK Ultrafine Particle

Counter consists of the inlet screen assembly, sample tube, and telescoping
probe (see Chapter 3, “

Operation,” for information on other sampling

options).

The inlet screen assembly helps to prevent large particles and fibers from
entering the instrument and plugging the internal fittings. Do not operate the

RAK without the inlet screen assembly in place. To attach the sampling

P-T

assembly:

1. Make sure the quick-connect fitting is in the “unlocked ” position. If the

fitting is locked, the sampling tube will not be able to be inserted in to
the instrument. To unlock the fitting, press up on the tab under the
fitting.

2. Insert the inlet screen assembly into the fitting and press it firmly until it

snaps into place (see Figure 2-7). It may help to rotate the inlet screen
while inserting.

3. Attach one end of the sample tube to the inlet screen assembly barbed

fitting.

4. Attach the other end of the sample tube to the barbed fitting on the

telescoping probe.

14

Chapter 2

Figure 2-7: Insert Inlet Screen Assembly into Fitting

5. For storage and safe keeping, attach the telescoping probe to either side

of the instrument. Slide it in lengthwise along the instrument, beginning
at the back of the instrument (the alcohol wick end) until it stops (do not
force it!). See Figure 2-8.

Figure 2-8: Slide Telescoping Probe onto Instrument Case

Setting Up

15

The P-TRAK is now ready to operate. Refer to Chapter 3, “Operation,” for
information on starting and operating the instrument. The remainder of this
chapter contains information on optional setup routines.

Attaching the Shoulder Strap (optional)

The P-T

RAK includes a shoulder strap, which allows the instrument to be

easily carried over one shoulder, and facilitates hands-free operation. To
attach the shoulder strap, simply attach the snaps to the split rings located on
the case, as shown in Figure 2-9.

Figure 2-9: Attach Shoulder Strap to Instrument

Instrument Software and Communications Setup

The P-T

RAK comes with special software called TRAKPRO, which is

designed to provide you with maximum flexibility and power when using

RAK. The following sections describe how to install the software and

the P-T
set up the computer.

Setting up T

Follow the instructions on the label of T
software on your computer. T

RAKPRO Data Analysis Software

RAKPRO Software to install the

RAKPRO software contains a very

comprehensive Help Function. This utility provides all the necessary
information to guide you in all aspects of software operation.

16

Chapter 2

Connecting the P-TRAK to the Computer

Each P-T

RAK comes equipped with an RS-232 cable and a 25-pin to

9-pin serial cable adapter. One end of the cable is a 25-pin
D subminiature connector labeled COMPUTER; the other end is an
RJ-45 modular connector that connects with the P-T

RAK

communications port. Serial port connectors always have pins (male) on
the computer side.

1. Locate an available RS-232 serial port on your computer: for
example, COM1 or COM2.

2. If the port has a 9-pin connector, you do not need the adapter. If the
port has a 25-pin connector, plug the 9-pin end of the adapter into
the RS-232 cable.

3. Connect the RS-232 cable to the available serial port on your
computer.

4. Connect the RJ-45 connector to the P-T

RAK communications port.

Setting up the Communications Port

To communicate with the P-T
the proper COM port. T
specific COM port, or it can automatically find a P-T

RAK, the software must be configured for

RAKPRO can be manually set to operate on a

RAK that is

attached to any COM port. To set up the COM port, do the following:

1. Turn on the P-T

2. Start T

3. Select I

RAKPRO software.

nstrument Setup, Communications in TRAKPRO. The

RAK.

following dialog is displayed:

Figure 2-10: Instrument Setup, Communications Dialog Box

Setting Up

17

4. Select the correct serial port (such as, COM1); then select Test. The

software will verify that you have set up the communications port
correctly and that it is communicating with the P-T

RAK. The system

displays an information message indicating whether it was able to
establish communications.

5. As an alternate, you may select F

search the available COM ports, looking for an attached P-T

ind Port, to have TRAKPRO

RAK.

6. Select OK to accept the setup, or Cancel to discard the changes.

Connecting the Optional Portable Printer

To connect the portable printer to the Q-T

RAK Plus monitor, do the

following:

1. Ensure that the Q-T

RAK Plus monitor and printer are off.

2. Locate the printer interface cable and connect the 9-pin end labeled

PRINTER to the printer and the other end to the communications port
on the Q-T

3. Turn on the Q-T

Note: Always turn on the Q-T

RAK Plus monitor.

RAK Plus monitor; then turn on the printer.

RAK Plus monitor before turning on the

printer. If the printer prints question marks (??????), asterisks
(******), or random characters, reset it by turning it off and then
on again. If necessary, refer to the Portable Printer Manual.

18

Chapter 2

Chapter 3

Operation

Overview

The P-T
Log.

Turning the Instrument On

Press the ON/OFF switch (located at the back of the instrument) and hold
for 2–3 seconds to turn on the P-T
warm-up, countdown sequence, which takes about 60 seconds. During the
warm-up time, the instrument is powering the internal components and
coming up to operating temperature. A screen will be displayed identifying
the instrument model number and the firmware revision level.

Tilting the Instrument

RAK has three main modes of operation, Survey, Sample, and Data

Survey mode: When the P-T
mode which is used to display real-time particle concentration readings,
in particles per cubic centimeter (pt/cc). The instrument will update the
displayed concentration once each second. This is the most common
mode of operation and is used to track sources of ultrafine particles.

Sample mode: The Sample mode is used to take a 10-second, averaged
particle concentration reading. These single data points may be stored in
memory and annotated.

Data Log mode: The Data Log mode is used to record particle
concentration readings over a period of time, and store these readings in
the instrument memory. Data files may be downloaded to a computer
for later analysis using T

RAK is first turned on, it will be in Survey

RAKPRO software.

RAK. The P-TRAK immediately begins a

CAUTION

To prevent false counts and/or a temporary loss

!

of counting efficiency, the P-T
a substantially level position during operation.
Prolonged operation while tilted can cause alcohol
within the instrument to flood the optics. This may
result in the need for factory cleaning and
servicing.

RAK must be held in

19

The P-TRAK contains liquid isopropyl alcohol, which is absorbed into a
porous wick. Under most operating conditions, the alcohol remains absorbed
in the wick. However, if the instrument is tilted for a period of time, the
alcohol will slowly seep out of the wick. This liquid alcohol may be drawn
into the optical chamber, causing false particle counts and possibly flooding
the optics. This will not permanently damage the instrument, but may result
in a temporary loss of performance. To avoid this problem, please observe
the following cautions:

• Do not tilt the instrument up (into a vertical position) to observe the

display. If the instrument is tilted for more than 4 seconds: a tilt error
message will be displayed, the beeper will sound, the displayed
particle concentration will “blank out” and the pump will be stopped.

• After restoring the instrument to level operation, the tilt error

condition will correct itself (the pump will restart and the display will
reset).

• If the instrument is tilted during data logging, the instrument may shut

down and discontinue logging.

• If the instrument is tilted during the Sample mode, the data point will

be discarded.

20

Chapter 3

Daily Zero Check

Before beginning to sample with the P-T

RAK , it is important to verify that

the instrument is operating normally. This Daily Zero Check should be
performed at least once a day.

1. Turn on the instrument and let it warm up (approximately
60 seconds).

2. Remove the sample tube from the inlet screen assembly (if
attached).

3. Attach the supplied zero filter assembly (item #4, Figure 1-3) to the
inlet screen assembly.

4. The particle concentration should go to zero in approximately 5 to
10 seconds. Leave the zero filter attached to the instrument for
30 seconds, to make sure the zero reading is stable.

Note: If the instrument does not go to zero, please refer to

Chapter 5,

Troubleshooting, for more information.

The Daily Zero Check cannot be performed when the
telescoping sample probe is attached to the instrument.
The telescoping joints will cause a small number of
particles to be sampled and will invalidate the zero check.

5. Remove the zero filter. Attach the sample tube and telescoping
sample probe, as desired. The instrument is now ready for
operation.

RAK Keypad

P-T

The P-T

RAK is controlled using a simple, 4-way keypad, with Up, Down,

Left, and Right keys along with an Enter key. These keys are used to move
between menu items, to increase or decrease selected values and to select the
desired item/value. When pressing the keys on the front panel, the P-T

RAK

beeps to confirm the function. See Figure 3-1.

Operation

21

Figure 3-1: P-TRAK Keypad and Display

Main Menu

After the instrument has completed its warm-up countdown, the P-T
automatically go into the Survey mode and the Main Menu will be
displayed.

1

3670

2

3

4

Ref Description

1 Particle concentration, in units of particles per cubic centimeter.
2 Sample mode. Used for capturing single data points.
3 Setup mode. Used for reviewing logged data, single data points,

statistics. Used for changing date/time, log interval, backlight
interval, audio function. Used for clearing memory.

4 Log mode (recording data files). Displays current log mode (1, 2, or

3). Used for changing mode and starting data logging.

5 Status area of Main Menu. Used for displaying status and error

messages.

SAMPLE
SETUP
LOG MODE 1

Figure 3-2: Main Menu Screen (sample)

PT

CC

RAK will

5

22

Chapter 3

Particle Concentration

The P-T
particles per cubic centimeter (pt/cc). The display updates once per
second. The instrument range is from 0 to 500,000 pt/cc.

Sample Mode

The SAMPLE mode is the default selection on the Main Menu (the
reverse highlight indicates that it is selected). The Sample mode is used
to capture a single, 10-second averaged data point.

Instantaneous particle concentrations often fluctuate significantly. When
making a measurement, therefore, it is often desirable to dampen out
these fluctuations with a short averaging period.

RAK displays the measured particle concentration in units of

Recording and Saving a Single Data Point

When you press “↵ ”, with the Sample mode highlighted, the

RAK begins a countdown. During these 10 seconds, it is taking

P-T
an average reading of the particle concentration. At the end of the
averaging period, the following sample screen is displayed:

PT

3678

RECORD VALUE IN MEMORY?

YES

NO

CC

Operation

Figure 3-3: Record Single Data Point

The YES selection is highlighted by default. If you press “↵”, the
single data point will be stored in memory. If you scroll down to
NO, the data point will be discarded.

23

Changing the Location Label

Once you choose to save the data point in memory, the P-T
displays the EDIT LOCATION screen. The instrument gives the
data point a default name, starting with “LOCATION 01.” The
following screen is displayed.

-EDIT LOCATION-

OCATION 01

L

PRESS ↵ TO EXIT

Figure 3-4: Edit Location Label, Single Data Point

If you press “ ↵ ”, the instrument will save the data point with the
default Location Name (in this case, “Location 01”). If desired, you
may change the Location name, up to a maximum of 15
alpha/numeric characters. When done editing, press “ ↵ ” to exit
and save. The instrument will return to the Survey mode.

Setup Mode

The Setup mode gives you access to a wide range of options for
reviewing data, examining statistics and changing operational
parameters. When SETUP is selected and “↵” is pressed, the program
opens the Setup menu, as shown below:

STATISTICS
LOG INTERVAL
AUDIO
TIME/DATE
BACKLIGHT
CLEAR MEMORY
EXIT

Figure 3-5: Setup Menu

RAK

24

Statistics

The STATISTICS selection gives you access to a sub-menu, which
provides a choice of either Logged Test Statistics or Single Point
Statistics.

Chapter 3

Logged Test Statistics

The Logged Test Statistics screen allows you to review a
statistical summary of each data logged test. When the screen
is first displayed, it will show the statistics for the most recent
test. You may page through and review the statistics for each
test in memory. A sample screen is shown below.

1

-LOGGED TEST STATS-

TEST #3

2

START: 08:23 11/02/2006

5

STOP: 09:45 11/02/2006

3

4

MIN: 3753 09:35:00
MAX: 3753 09:35:05
AVG: 4052

PRESS ↵ WHEN DONE

6

Figure 3-6: Logged Test Statistics

Ref Description

1 Test number (not user adjustable).
2 Start time and date.
3 Stop time and date.
4 Minimum value during test, along with time at which minimum

occurred.

5 Maximum value during test, along with time at which maximum

occurred.

6 Average value during logged test, in pt/cc.

Operation

25

Single Point Statistics

The Single Point Statistics screen allows you to review a
statistical summary of each recorded single data point. When
the screen is first displayed, it will show the information for the
most recent single data point. You may page through and
review the information for each recorded point. A sample
screen is shown below.

-SINGLE POINT STATS-

LOCATION 01
3760 PT/CC
08:22:34 11/02/2006

PRESS ↵ WHEN DONE

Figure 3-7: Single Point Statistics

Log Interval

The Log Interval menu allows you to view the current logging
interval used during LOG MODE 1 (see “

Log Mode 2 and 3”

section, later in this chapter, for more information about data
logging). It also allows you to adjust the log interval to a different
value. The menu screen is shown below.

-LOG INTERVAL-

01:00

MIN:SEC

Figure 3-8: Log Interval

26

The default values for log intervals are set at 1 second, 1 minute,
5 minutes, 15 minutes and 30 minutes. When “↵” is pressed, the
program retains the current setting and returns to the Setup menu.

The log interval is both a frequency and an averaging period. For
example, when the log interval is set to 5 minutes, readings will be
recorded at 5-minute intervals. Each reading will be the average
value measured over that 5-minute interval.

Chapter 3

The log interval options for LOG MODE 1 may also be
programmed using T
Parameters, then Logging Intervals, from the T
The current settings in the P-T

RAKPRO software. Select Instrument Setup,

RAKPRO menu.

RAK will be retrieved and displayed

in the dialog box. You may program in new values for each of the
five log intervals (within defined limits). Select Send to program

RAK with the new values.

the P-T

Note: This log interval only applies to Log 1 mode, initiated

from the instrument keypad. The log interval for Log 2
and Log 3 modes is adjustable only within T

RAKPRO

software.

Audio

The Audio Output feature on the P-T

RAK provides an audible

feedback which is proportional to the measured particle
concentration. When this feature is turned On, you will hear an
audio signal which will give you an indication of changing particle
concentrations. This feature may be particularly useful when you
are attempting to detect highly localized sources of particulate, in a
low light condition. A sample screen is shown below.

-AUDIO OUTPUT­5600 PT/CC

OFF

CAPTURE REFERENCE

SET REFERENCE: 3040

EXIT

Figure 3-9: Audio Output

The Audio menu allows you to turn the audio output feature
OFF/ON and to adjust characteristics of this feature. Note the
following characteristics of this function:

• The current, real time particle concentration is displayed at the

top of the display.

• The Audio function is turned OFF by default. To turn it ON,

use the left/right arrow keys.

• To adjust the reference value to the same as the current

ambient concentration, highlight the CAPTURE REFERENCE
selection, and press “↵”. You will notice that the real time

value and reference value become essentially equal.

Operation

27

• To adjust the reference value manually, move the selection

highlight to SET REFERENCE. Then, use the right arrow key
to move the highlight to the reference value. Use the up/down
arrow to adjust the reference values in increments of 100.
When satisfied with the new reference value, use the left
arrow key to return to SET REFERENCE.

• When all adjustments are completed, highlight the EXIT

selection and press “↵”. This will return you to the SETUP
menu.

Time/Date

The P-T

RAK has an internal clock that keeps track of the time of

day and the date. The format is HH:MM:SS where HH is the hour
in 24-hour format, along with minutes and seconds. It is very
important for the P-T

RAK to have the time and date correctly set;

otherwise, time and date stamping of recorded data will not be
correct.

The time clock is set correctly at the factory (for U.S. Central
Standard Time). If it requires adjustment, it may be changed by
selecting TIME/DATE from the Setup menu. The following screen
is displayed:

-TIME/DATE-

USE <> FOR POSITION

USE ^∨ FOR VALUE

HH:MM:SS 0

8:25:32

MM/DD/YYYY 11/02/2006

28

Figure 3-10: Time/Date

When first entering this screen, the first character in the hour (HH)
field will have a cursor underneath it. Use the up/down arrows to
increment and/or decrement values. Use the left/right arrows to
move to the required field. When all adjustments are complete,
press the “↵” key to accept the changes and return to the Setup
menu.

Chapter 3

Programming Time/Date Using TRAKPRO

The time and date may also be adjusted using T
To program the P-T

RAK date and time:

RAKPRO software.

1. Make sure the P-T

RAK is connected to the computer and turned

on.

2. In T

RAKPRO, select Parameters, then Clock from the

nstrument Setup menu. TRAKPRO retrieves the current date

I

and time settings from P-T

RAK and displays them in the

following dialog:

11/02/2005

Figure 3-11: Time/Date Programming with TRAKPRO

11/02/2006

3. The system date and time (from the computer) can be

transferred to the P-T

RAK using the “arrows” keys. Alternately,

the date and time can be manually entered into the dialog box.

Operation

4. Select Send to reprogram the P-T

RAK.

Backlight

The BACKLIGHT option on the Setup menu allows you to adjust
how long the display backlight stays on after a key is pressed or an
alarm occurs. After the delay, the backlight automatically turns off.
To change the backlight delay, use the Up/Down arrows. The
options are: No Backlight; 5, 10 and 30 seconds. Press “↵” to select
the value and return to the Setup Menu.

29

-BACKLIGHT DELAY-

5 SECONDS

Figure 3-12: Backlight Delay

Note: Prolonged use of the backlight may severely reduce

the overall battery life.

To edit the backlight delay using T

RAKPRO software, select

Instrument Setup, Parameters, and Other. Follow the onscreen
prompts or open the Help Function (F1) for more information.

Clear Memory

The CLEAR MEMORY option on the Setup menu allows you to
clear the instrument memory. To preserve data integrity, the

RAK does not automatically erase the “older” data files. It

P-T
requires a deliberate step, on your part, to clear the memory.

Note: Performing this step will erase all logged data files

and/or recorded single data points from the instrument
memory. There is no reversing this step, once it is
performed!

To clear the memory, select the CLEAR MEMORY option on the
Setup menu. After pressing “↵”, the following screen is displayed.

-CLEAR MEMORY-

SINGLE POINT MEMORY
LOGGED TEST MEMORY
EXIT

30

Figure 3-13: Clear Memory Select Screen

The highlighted default selection is Single Point Memory. If you
press “↵” at this point, the Single Point Memory will be erased (the
Logged Test Memory will be unaffected). Logged Test Memory is
cleared in the same manner.

Chapter 3

LOG MODE

The third selection on the Main menu allows you to select which data
logging mode to use and then to initiate a data logging session. To make
changes to the LOG MODE, simply scroll Up/Down to the LOG
MODE 1 selection and then adjust the mode using the Left/Right
arrows. You may select LOG MODE 1, 2, or 3 (please see the section

Log Mode 2 and 3,” later in this chapter, for more information

on “
about these programmable log modes).

The logging interval for LOG MODE 1 must be adjusted, from the
Setup menu, before beginning the logging session. To begin a data
logging session, select the LOG MODE and press “↵”. The P-T
begin recording logged data into the instrument memory. If LOG
MODE 1 was selected, the following screen will be displayed:

RAK will

PT

4048

MIN 4032 08:32:00
MAX 4950 09:27:00
98 % MEM
LOG MODE 1 ↵ TO STOP

CC

Figure 3-14: Log Mode 1

If LOG MODE 2 or 3 was selected, the P-T
logging immediately, depending upon the setup parameters. See “

Mode 2 and 3,” in this chapter, for more information.

Log Mode 2 and 3

The P-T
modes, using T
Modes 2 and 3, you can set the start date, start time, test length, logging
interval, number of tests, and the time delay between tests. You program the
logging protocols into the P-T
T
simply select Log Mode 2 or Log Mode 3, and begin data logging.

Operation

RAK may be programmed for more sophisticated data logging

RAKPRO software and Log Modes 2 and 3. With Log

RAK using the power and simplicity of

RAKPRO software. The instrument is then taken to the field, where you

RAK may or may not begin

Log

31

To program a logging protocol for Log Mode 2 or 3:

1. Make sure the P-T

RAK is connected to the computer and turned on.

2. Select Logging Setup from the Instrument Setup menu. T

retrieves the current settings for Log Modes 2 and 3 from the P-T
and displays them in the following dialog box.

11/02/2006 11/03/2006

Figure 3-15: P-TRAK Logging Protocols

RAKPRO

RAK

32

Chapter 3

The following table summarizes the information displayed in the

RAK Logging Protocol dialog box.

P-T

Item Description

Serial Number Displays the serial number of the P-TRAK.
Number of tests

logged

Displays the number of tests currently logged
and stored in the logging instrument.

Available Memory % Displays the percent of available memory in

the P-T

RAK (data logging only; single point

memory is not included in this total).

Channels Displays the channels selected for sampling in

LOG 2 and LOG 3 modes (for the P-T
is limited to particle concentration).

Start Date Displays the start date for LOG 2 and LOG 3

modes.

Start Time Displays the start time for LOG 2 and LOG 3

modes.

Log interval Displays the log interval for LOG 2 and LOG 3

modes.

Test length Displays the test length for LOG 2 and LOG 3

modes.

Number of tests Displays the number of tests for LOG 2 and

LOG 3 modes. Selecting more than one test
will cause the instrument to cycle through the
logging test more than once, separated by the
“Time Between Tests.”

Time between tests Displays the time between tests for LOG 2 and

LOG 3 modes.

Percent memory
required

Displays the percent of logger memory
required to perform a LOG 2 or a LOG 3 mode
sample. To store the results of a LOG 2 or
LOG 3 mode sample, the Available Memory
must be equal to or greater than the Percent
memory required.

RAK, this

Operation

33

To program the P-TRAK for Log Mode 2 or 3, do the following:

Item Description

Channels Select the channels for which you want to

Start Date
Start Time

log data. In the case of the P-T
only one channel to select: particle
concentration.

Enter the date and time to begin the
sample:

RAK, there is

• If you enter a blank for a start date, the

sample begins whenever the specified
start time occurs.

• If you enter a blank for the start time,

both start date and start time are
ignored, and the sample begins when
the operator manually starts the

sample.
Log interval Enter the log interval to use for the test.
Test length Enter the length for the sample:

• If you enter a value, the instrument

automatically turns off when the last

test is complete.

• If you enter a blank, the operator must

manually stop the sample.
Number of tests Enter the number of tests to perform.
Time between tests If you have specified more than one

Number of tests, enter the time between
tests. If you enter 0 or blank, the next test is
started immediately after the last test is
complete.

While you are entering values for Log Mode 2 or 3, the Percent
Memory Required is dynamically updated to show the amount of logger

memory required to take the programmed sample. If the protocol you
have defined requires more than 100% of memory, you can decrease the
amount of memory required by manipulating the following protocol
parameters:

• Increase the logging interval.

• Decrease the length for the test.

• Decrease the number of tests.

The settings for each separate Log mode must not require more than
100% of the logger memory.

34

Chapter 3

Note: If the percent memory required is greater than the available

memory, T

RAKPRO will not allow you to program the Log

Mode 2 or 3. It will only accept a protocol which is feasible.

3.

When you have finished defining the parameters for LOG 2 and LOG 3

modes, select S

end.

4. You can now disconnect the P-T

RAK and cable from the computer.

Sample Protocol for Log Mode 2 or 3

The following steps describe how to program a sample protocol for Log
Mode 2 or 3.

Log Mode 2 sample protocol features:

• The sample protocol for Log Mode 2 is set to take unattended

particle concentration readings for one day.

• Logging takes place on 11/02/2006.

• The logging sample begins at 8:00 a.m.

• Logging continues for eight hours.

Log Mode 3 sample protocol features:

• The sample protocol for Log Mode 3 is set up to take unattended

particle concentration readings for four days.

• Logging first takes place on 11/03/2006.

• The logging sample begins at 8:00 a.m.

• Logging continues for eight hours.

• The instrument is off for 16 hours, and then repeats an eight hour

test for the next three days.

The following graphic gives the appearance of the dialog box displayed in

RAKPRO, with above-described logging parameters.

T

Operation

35

11/02/2006

Figure 3-16: P-TRAK Logging Example

11/03/2006

To program this logging example, do the following:

1. Make sure the P-T

2. Select L

ogging Setup from the Instrument Setup menu. TRAKPRO

RAK is connected to the computer and turned on.

retrieves the current settings for Log Modes 2 and 3 from the P-T
and displays them (as shown in the previous dialog).

3.

Enter the following for Log Mode 2 and 3:

Setting LOG 2 LOG 3

Channels Particle Conc. Particle Conc.
Start Date 11/02/2006 11/03/2006
Start Time 08:00 08:00
Log interval 01:00 05:00
Test length 00:08:00 00:08:00
Number of tests 1 4
Time between tests 00:00:00 00:16:00

4. Select S

end. The logging instrument is programmed for the mode 2 and

mode 3 protocols.

36

RAK

Chapter 3

5. Note that the LOG 2 test requires 1% of the available memory and LOG
3 requires 1% of the memory. A total of 100% of the memory is
available for use.

6. You can now disconnect your P-T

RAK from the computer. Refer to

other sections of this Operation and Service Manual for details on
making measurements using LOG 2 and LOG 3 modes.

After programming the P-T
take the P-T

RAK to the desired location and turn it on. After warm-up, put it

RAK with the TRAKPRO Data Analysis Software,

into LOG MODE 2 or LOG MODE 3 (whichever you programmed) using
the Left/Right arrow keys. Press the “↵” key to initiate the program.

The following things will happen, depending upon the protocol:

If…. Then….

If you have not set a start time… …the P-TRAK will begin logging

immediately after the “↵” is
pressed.

This will happen no matter what is
entered for the start date.

If you have set a test start time, but
no start date…

If you have set a start time and start
date which are in the future…

If the test start time is greater than
five minutes away…

…the P-TRAK will begin at the
specified time, regardless of the
date.

…the P-TRAK pump (and other
internal systems) will power down
to save battery power, pending the
correct starting time and date. The
display will return on.

…the P-TRAK powers down, as
noted above. The green, “power”
LED remains lit, to indicate the
instrument is turned on. The
display shows the current
time/date and the start time/date.
Several minutes before the start
time, the pump (and other internal
systems) will turn on, to begin the
warm-up period. At the exact start
time, the instrument will begin
logging data.

Operation

37

If the test start time is less than five
minutes away…

If the test start date and/or time has
passed…

If no test length is set… …the P-TRAK samples

If you press the “↵” key during
sampling…

When a pre-programmed test
sequence ends…

…the pump and internal systems
do not power down. The current
time/date and start time/date are
displayed. The instrument begins
logging at the correct time.

…pressing the “↵” key has no
impact. The program will never
execute (no data will be logged).

continuously until the “↵” key is
pressed or until the memory is full.

…the program stops data logging.

…the P-TRAK automatically returns
to the Survey Mode.

Memory Considerations

The P-T

RAK has a great deal of memory and you will not normally have to

be concerned with running out. The instrument contains separate memory
for the single points and the logged tests (filling up the memory for one type
of data will have no affect on the other type).

The P-T

RAK can store approximately 470 single points. It can also store

approximately 1000 hours (41 days) of logged tests, when recording at
1 minute logging intervals (the number of hours of logged tests may be more
or less, depending upon the logging interval). Those 1000 hours may be
separated into as many as 141 tests.

The total test time should be considered when selecting a logging interval.
Shorter logging intervals use memory more quickly than longer intervals.
The logging interval and the available memory determine the maximum
possible duration of a data logging session.

Particle Sampling Configurations

The P-T

RAK Ultrafine Particle Counter can be operated in three sampling

configurations:

• Sampling through the inlet screen, sample tube, and telescoping

probe assembly (standard configuration)

• Sampling through the inlet screen and sample tube

• Sampling through the inlet screen assembly only

Each of these sampling configurations have specific applications,
advantages, and disadvantages.

38

Chapter 3

Sampling Through Inlet Screen, Tube, and Probe Assembly

The standard sampling configuration for the P-T

RAK makes use of the

inlet screen, sample tube, and telescoping probe. This configuration is
the easiest to use and is suitable for a wide range of applications. It has
the following features:

Advantages Disadvantages/Cautions

Allows you to sample a pinpoint
source of aerosol.

Allows you to reach remote
locations (ceiling diffusers, etc.).

Allows “hands-free” operation
(attach probe to instrument case).

Small amount of particle loss
through sample tube.

Slight lag time before response
(time it takes for sample to be
drawn through probe and tube).

Sampling Through Inlet Screen and Sample Tube

If you desire to pull a sample from a specific location or from a remote
location (but do not need the telescoping features of the probe), it may
be desirable to remove the probe and use the inlet screen and sample
tube only. This configuration has the following features:

Advantages Disadvantages/Cautions

Allows you to sample particles at a
very specific location (pin-point).

Allows you to extract a sample
from remote location (filter
sampling, etc.).

More efficient sampling (than with
telescoping probe attached).

Slightly faster response to particle
concentration changes.

Use supplied sample tube only
(longer tube may impact
sample efficiency).

Operation

39

Sampling Through Inlet Screen Assembly Only

The P-T

RAK must always be operated with the inlet screen assembly in

place. This mesh screen prevents large particles and fibers from
clogging the sensitive internal components in the instrument. If desired,
you may operate the P-T

RAK with only the inlet screen and no sampling

tubing. This configuration has the following features:

Advantages Disadvantages/Cautions

Most efficient (least particle loss). Not able to pinpoint aerosol

sources.

Fastest response to particle
concentration changes.

Well suited to area sampling.

40

Chapter 3

Chapter 4

Maintenance

You can perform routine maintenance on the P-T
below. However, you are not able to perform field calibration of the
instrument. For this reason, TSI recommends that you return your P-T
the factory for annual cleaning and calibration. For a reasonable fee, we will
quickly clean and calibrate the unit and return it to you in “as new” working
condition, along with a Certificate of Calibration. This “annual checkup”
helps ensure that the P-T

RAK is always in good operating condition.

Note: There are no user-serviceable parts inside this instrument.

Opening the instrument case may void the warranty. TSI
recommends that you return the P-T
required maintenance or service not described in this manual.

Maintenance Schedule

Your Model 8525 P-T

RAK Ultrafine Particle Counter needs very little

required maintenance. The few items that are suggested, however, should be
done regularly, to ensure reliable operation. Table 4–1 lists the factory
recommended maintenance schedule.

Some maintenance items are suggested each time the P-T
items are performed based upon usage level, calendar or done as needed.

Table 4–1. Recommended Maintenance Schedule

Item Frequency

Daily zero check Daily (or before each use)
Recharge the alcohol wick Daily (or before each use)
Change the alcohol wick As needed (see Chapter 5,

Clean inlet screen assembly Monthly, or as needed
Return to factory for cleaning and calibration Annually

Daily Zero Check

The Daily Zero Check ensures that the instrument and alcohol cartridge are
properly assembled and free from leaks. Please see the beginning of
Chapter 3, “

Operation,” for detailed instructions on performing the Daily

Zero Check.

RAK using the instructions

RAK to

RAK to the factory for any

RAK is used. Other

“

Troubleshooting”)

41

Recharging the Alcohol Wick

The alcohol wick should be recharged with alcohol at least once a day
(depending upon usage). Please see Chapter 2, “

Setting Up,” for detailed

instructions on recharging the alcohol wick.

Alcohol Cartridge

The alcohol cartridge holds a reservoir of isopropyl alcohol. A porous wick
inside the cartridge is soaked with alcohol. Because the alcohol cartridge
gets inserted into the cartridge cavity of the P-T
to keep it clean. Any dirt or debris that gets into the P-T

RAK, it is critically important

RAK may plug the

small internal nozzle and prevent operation. Do not allow the black part of
the alcohol cartridge to make contact with any surface that may be dirty.

Note: Keep the storage cap and alcohol cartridge clean. Always set

them down with the end standing up.

Changing the Alcohol Wick

The wick and screen inside the alcohol cartridge may be changed in the
field. Two spare wicks and screens are included with the P-T

RAK.

Normally, the wick will not need to be changed unless one of the
following problems develops:

1. Moisture accumulates in the wick and causes the “Low Alcohol”

message to come on even when there is an adequate alcohol supply.
This may happen when the P-T

RAK is used extensively for long

periods of time, especially in high humidity areas.

2. The wick becomes contaminated with dirt, oil, or other foreign

substances. This does not normally happen. However, if the
instrument is used to sample particles other than those normally
found in ambient air (such as, boiler rooms, combustion aerosol)
the wick may become contaminated and need replacement.

3. The fine mesh screen inside the Alcohol Cartridge becomes

plugged with foreign material.

When moisture accumulation occurs, the alcohol wick can be removed,
allowed to dry, and then re-installed into the alcohol cartridge. If the
alcohol wick or screen is contaminated, it should be discarded and
replaced with a new one (if it is not contaminated, it may be reused).
Each new wick has a new screen with it. Note that some discoloration is
normal and will not influence performance.

42

Chapter 4

Removing the Wick from the Cartridge

To remove the alcohol wick from the cartridge, grasp the cartridge with
both hands, with your thumbs near the seam, and firmly apply pressure
as if you wanted to break it into two pieces. The cartridge will snap
apart exposing the end of the white Alcohol Wick. See Figure 4-1.

Figure 4-1: Snap Apart Cartridge

After separating the two halves, push the alcohol wick and screen out of
the wick retainer cap from the opposite end with the wick removal tool
(wood dowel) provided with each new alcohol wick. Do not use a
pencil point because bits of lead could break off. Allow the small,
circular, fine-mesh screen to fall out on the table. See Figure 4-2.

Figure 4-2: Remove Wick and Screen Using Dowel

Hold the screen up to the light and look through it to make sure it is
clean. All openings in the mesh should be clear. If any of the openings

Maintenance

43

are blocked, clear them by blowing air through the screen. If the screen
cannot be 100% cleaned, replace it with a new one. A new screen is
included with each new wick.

Examine the white alcohol wick. Some light brownish-yellow
discoloration of the wick is normal. If the wick is severely discolored,
discard it. If the wick is in good condition, it should be removed and
allowed to air dry in a relatively clean location. A spare wick can be
substituted and saturated with alcohol so the instrument can continue to
be used.

Re-assembling the Alcohol Cartridge

Before re-installing an alcohol wick, you must make certain that all
parts are clean. Small bits of the wick or lint can cause serious problems
if they get into the P-T

RAK.

Inspect the inside surfaces of the alcohol cartridge and the wick retainer
cap. Blow air into them if necessary to make certain that there are no
dust particles present. Blow air onto all surfaces of the Alcohol Wick
that will be used to make certain that any loose particles that may have
shed from the wick are removed.

Drop a clean screen into the wick retainer cap and make sure it lies flat
on the bottom. Examine both ends of the wick. You will notice that one
end is smoother than the other. Slide the smooth end of the wick into the
wick retainer cap and push firmly until the wick hits bottom. Blow
everything off again. See Figure 4-3.

44

Figure 4-3: Install Screen and Wick into Retainer

Chapter 4

Re-assemble the cartridge. Align the two halves of the alcohol cartridge
and press firmly until they snap together. The cleaning/replacement
procedure is complete.

Cleaning Inlet Screen Assembly

The inlet screen assembly protects the instrument from contamination by
coarse particles and/or fibers. When the inlet screen is clean, it has almost no
affect upon the instrument particle counting. However, if the screen becomes
plugged with lint or fibers, it may cause a reduction in particle counting
efficiency.

The screen should be cleaned on a regular basis to prevent the build-up of
fibers or contamination. The intervals between cleaning will be determined
by the amount of use and the conditions of use. As a general rule-of-thumb,
whenever there is any noticeable contamination on the screen, it should be
cleaned.

To clean the inlet screen assembly, do the following:

1. Disconnect the inlet screen assembly from the instrument by depressing
the quick-connect fitting button and pulling the assembly away from the
instrument.

2. Unscrew the two halves of the assembly and remove the inlet screen.

3. Clean off any accumulations with compressed air.

4. Reassemble the inlet screen assembly, taking note of the screen
orientation. See Figure 4.4. Screw the two halves securely together
(finger-tight only). Failure to properly tighten the inlet fitting halves
may result in a particle leak and the inability to “zero check” the
instrument.

Figure 4-4: Re-assemble Inlet Screen Assembly

5. Install the inlet screen assembly into the quick-connect fitting and attach
the sample tubing.

Maintenance

45

46

Chapter 4

Chapter 5

Troubleshooting

The table below lists the symptoms, possible causes and recommended
solutions for common problems encountered with the P-T

Symptom Possible Cause Corrective Action

Unable to
obtain zero
count (using
HEPA zero
filter)

Optics are flooded with
alcohol (caused by
multiple or prolonged
tilting of instrument).

Inlet screen assembly is
loose (not screwed tightly
together).

Inlet screen assembly is
missing internal
screen/washer.

Inlet screen assembly has
missing or damaged
O-ring.

Attempting to perform
zero with telescoping
probe attached.

Alcohol cartridge is loose.

Bad HEPA filter
(uncommon).

Internal leak inside
instrument (very
uncommon).

Let instrument run overnight
(using AC adapter) with storage
cap installed in P-T
alcohol wick). This will dry out
the optics and should restore
proper operation.

Tighten assembly together
(hand-tight only).

Install screen. Securely tighten.

Make sure O-ring is in place on
inlet screen assembly tube.

Remove telescoping probe and
sample tube. Attach HEPA zero
filter directly to inlet screen
assembly.

Tightly install the alcohol
cartridge into instrument.

Try using a different filter. Or try
using two filters inline.

Must be diagnosed and
serviced at factory.

RAK.

RAK (not

47

Symptom Possible Cause Corrective Action

Counts seem
too low
(below
expected
values).

Low on alcohol.
Particle count in area

really is low.
Moisture buildup inside

alcohol cartridge.
Plugged sample tube.

Wrong sample tube: too
long, wrong material
(causing particle loss).

Pump problem causing
low (or no) flow.
Instrument is being
operated in wrong
environment: too hot, too
cold, too humid.

Inferior or contaminated
alcohol.

Unit needs calibration

Replenish alcohol in wick.
N/A

Change alcohol wick inside
alcohol cartridge.

Straighten tube; remove
obstruction.

Use factory supplied sample
tube only!

Listen for pump operation.
Check pump flow with
flowmeter: should be approx.

0.7 lpm. Operate in specified
environment only.

Change alcohol wick inside
alcohol cartridge. Use only
approved alcohol.

Return to factory for service.

and/or servicing.

Does not
turn on.

Not pressing on/off switch
properly.

Batteries are dead.
AC adapter is not plugged

Press and hold on/off switch for
one second.

Replace batteries.
Connect AC adapter.

into unit.

No keypad

Keypad defective. Return to factory for service.

response.
“LO ALC”

message

Alcohol wick is depleted.
Excess moisture

accumulation.

Refill alcohol cartridge.
Remove wick, replace with

spare wick and allow wick to air
dry in a clean location.

Chapter 5

48

Symptom Possible Cause Corrective Action

“TILTED”
message

“PUMP
BLOCKED”
message

“LO BATT”
message

“LASER
PROBLEM”
message

Instrument has been tilted
during operation.

Sample tube inlet is
blocked.

Low batteries.
AC adapter is

malfunctioning or not
plugged in.

Possible laser failure. Return to factory for service.

Hold instrument level during
operation!

Condition will normally correct
itself. Tilt condition may cause
data logging or Sample Mode
problems.

Remove obstruction. Press
<Enter> to reset.

Replace batteries.
Connect AC adapter.

Troubleshooting

49

Chapter 5

50

Appendix A

Specifications

Specifications are subject to change without notice.

Concentration Range
Particle Size Range
Temperature Range

Operation
Storage

Flow Rate
Sample
Total

Memory
Single points
Data logging

Power Requirement
Battery type
Battery life

Alcohol Requirement
Type
Hours per charge

RS232 Output
Size

Carrying Case

Size

Weight
Instrument with batteries
Instrument with accessories in case
Shipping weight

Factory Service Interval
Warranty

0 to 5 x 10

0.02 to 1 micrometer

32 to 100°F (0 to 38°C)
–40 to 160°F (–40 to 70°C)

Approx. 100 cm
Approx. 700 cm

470 points
Adjustable interval (up to 1,000 hours
of data at 1 minute intervals)
Storage of up to 141 separate tests

6 AA Alkaline
6 hrs @ 70°F (21°C)

100% reagent grade isopropyl
8 hours at 70°F (21°C)

Baud rate 9600 (8-N-1)

10.75 in. x 5.5 in. x 5.5 in.
(27 cm x 14 cm x 14 cm)

21 in. x 14 in. x 8.3 in.
(53 cm x 36 cm x 21 cm)

3.8 lbs (1.7 kg)

16.8 lbs (7.7 kg)
23 lbs (10.5 kg)

One year
Two years on workmanship and

material

5

particles/cm3

3
3

/min
/min

51

Computer Requirements

®

PC with Microsoft Windows

2000 or
XP; Windows-compatible printer;
5 MB hard disk space; and available
RS232 serial port (for downloading)

Appendix A

52

Appendix B

Material Safety Data Sheet: Isopropyl Alcohol

1 - PRODUCT IDENTIFICATION

Product Name....................... Isopropyl Alcohol

Formula................................ CH3CHOHCH3

Formula Wt.......................... 60.10

CAS No................................ 67-63-0

NIOSH/RTECS No.............. NT805000

Common Synonyms............. 2-Propanol; Isopropanol; SEC-Propyl

Alcohol; IPA; Dimethylcarbinol

Product Codes...................... U298, 5082, 9080

Effective............................... 09/03/86 Revision #02

Precautionary Labeling (Baker Saf-T-Data

Health................................... 1 Slight

Flammability........................ 3 Severe (Flammable)

Reactivity............................. 1 Slight

Contact................................. 1 Slight

Hazard Ratings are 0 to 4 (0 = No Hazard; 4 = Extreme Hazard).

Laboratory Protective Equipment:

Safety glasses; lab coat; vent hood; proper gloves; Class B extinguisher

Precautionary Label Statements:

Warning: Flammable
Causes Irritation.
Harmful if Swallowed or Inhaled.
Keep Away From Heat, Sparks, Flame.
Avoid Contact With Eyes, Skin, Clothing.
Avoid Breathing Vapor. Keep in Tightly Closed Container. Use With

Adequate Ventilation.
Wash Thoroughly After Handling.
In Case of Fire, use Alcohol Foam, Dry Chemical, Carbon Dioxide - Water

May Be Ineffective.
Flush Spill Area With Water Spray.

SAF-T-DATA

TM

Storage Color Code: Red (Flammable)

TM

System)

53

2 - HAZARDOUS COMPONENTS
Component % CAS No.

Isopropyl Alcohol 99.5 67-63-0

3 - PHYSICAL DATA

Boiling Point ....................... 82°C (180°F)

Vapor Pressure (mm hg)...... 33

Melting Point....................... –89°C (–128°F)

Vapor Density (air=1).......... 2.1

Specific Gravity:.................. 0.79 Evaporation Rate

2.83 (Butyl Acetate=1)

Solubility (H

O)................... Complete

2

Volatiles by Volume............ 100

Appearance and Odor.......... Colorless liquid with slight odor of rubbing

alcohol.

4 - FIRE AND EXPLOSION HAZARD DATA

Flash Point (closed cup)....... 12°C (53°F)

NFPA 704M Rating............. 1-3-0

Flammable Limits, Upper:... 12.0 %
Lower:... 2.0 %

Fire Extinguishing Media:

Use alcohol foam, dry chemical or carbon
Dioxide (water may be ineffective)

Special Fire-Fighting Procedures:
Firefighters should wear proper protective equipment and self-contained
breathing apparatus with full facepiece operated in positive pressure mode.

Move containers from fire area if it can be done without risk. Use water to
keep fire-exposed containers cool.

Unusual Fire and Explosion Hazards:

Vapors may flow along surfaces to distant ignition sources and flash back.
Closed containers exposed to heat may explode.
Contact with strong oxidizers may cause fire.

Toxic Gases Produced:

Carbon monoxide, carbon dioxide.

Appendix B

54

5 - HEALTH HAZARD DATA

Threshold Limit Value (TLV/TWA) ........ 980 mg/m3(400 ppm)

Short-Term Exposure Limit (STEL)......... 1225 mg/m3(500 ppm)

Permissible Exposure Limit (PEL) ........... 980 mg/m3 (400 ppm)

Toxicity: LD50 (oral-rat) (mg/kg)....... 5045

LD50 (IPR-mouse) (mg/kg) 933
LD50 (SKN-rabbit) (g/kg)... 13
LD50 (IV-mouse) (mg/kg) .. 1863

Carcinogenicity: NTP: no IARC: no Z List: No OSHA Reg: no

Effects of Overexposure:

Inhalation of vapors may cause headache, nausea, vomiting, dizziness,

drowsiness, irritation of respiratory tract, and loss of consciousness.
Inhalation of vapors may cause pulmonary edema.
Liquid may be irritating to skin and eyes.
Prolonged skin contact may result in dermatitis.
Eye contact may result in temporary corneal damage.
Ingestion may cause nausea, vomiting, headaches, dizziness, and

gastrointestinal irritation.
Ingestion may cause central nervous system depression.

Target Organs:

Eyes, skin, respiratory system.

Medical Conditions Generally Aggravated By Exposure:

None identified.

Routes of Entry:

Inhalation, ingestion, eye contact, skin contact.

Emergency and First Aid Procedures:

Call a physician.
If swallowed, do not induce vomiting.
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If

breathing is difficult, give oxygen.
In case of contact, immediately flush eyes with plenty of water for at least

15 minutes. Flush skin with water.

Material Safety Data Sheet: Isopropyl Alcohol

55

6 - REACTIVITY DATA

Stability................................ Stable, hazardous.

Polymerization..................... Will not occur.

Conditions to Avoid............. Heat, flame, other sources of ignition.

Incompatibles....................... Strong oxidizing agents, aluminum, nitric

acid, sulfuric acid, amines and ammonia,
halogen acids and halogen compounds.

Decomposition products...... Carbon monoxide, carbon dioxide.

7 - SPILL AND DISPOSAL PROCEDURES
Steps to be Taken in the Event of a Spill or Discharge:

Wear suitable protective clothing. Shut off ignition sources; no flares,
smoking, or flames in area. Stop leak if you can do so without risk. Use
water spray to reduce vapors. Take up with sand or other non-combustible
absorbent material and place into container for later disposal. Flush area
with water.

J. T. Baker SOLUSORB

®

solvent adsorbent is recommended for spills of

this product.

Disposal Procedure:

Dispose in accordance with all applicable federal, state, and local
environmental regulations.

EPA hazardous waste number: D001 (ignitable waste)

8 - PROTECTIVE EQUIPMENT
Ventilation:

Use general or local exhaust ventilation to meet TLV requirements.

Respiratory Protection:

Respiratory protection required if airborne concentration exceeds TLV. At
concentrations up to 1000 ppm, a chemical cartridge respirator with organic
vapor cartridge is recommended. Above this level, a self-contained breathing
apparatus is recommended.

Eye/Skin Protection:

Safety goggles, uniform, apron, neoprene gloves are recommended.

Appendix B

56

9 - STORAGE AND HANDLING PRECAUTIONS

SAF-T-DATA

TM

Storage Color Code: red (flammable)

Special Precautions:

Bond and ground containers when transferring liquid. Keep container tightly
closed. Store in a cool, dry, well-ventilated, flammable liquid storage area.

10 - TRANSPORTATION DATA AND ADDITIONAL INFORMATION
Domestic (D.O.T.):

Proper Shipping Name......... Isopropanol

Hazard Class ........................ Flammable liquid

UN/NA................................. UN1219

Labels................................... Flammable liquid

International (I.M.O.):

Proper Shipping Name......... Isopropanol

Hazard Class ........................ 3.2

UN/NA................................. UN1219

Labels................................... Flammable liquid

Material Safety Data Sheet: Isopropyl Alcohol

57

Appendix B

58

TSI Incorporated

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