TSI Incorporated portacount pro 8030, portacount pro+ 8038 Operation And Service Manual

Respirator Fit Testing
8030 and
8038
Respirator Fit Testers
Operation and Service Manual
P/N 6001868, Revision B
August 2008
Copyright©
TSI Incorporated / 2008 / All rights reserved.
Part Number
6001868 / Revision B / August 2008
Address
TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA
Fax No.
(651) 490-3824
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. This 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.
i
Caution
This instrument is a Class I laser device. Adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
Disclaimer: The measurement provided by the P
ORTACOUNT
Tester is an assessment of respirator fit during a fit test only. Respirator fit at other times will vary. The fit factor value is not intended for use in calculating an individual's actual exposure to hazardous substances.
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 problems. If any malfunction is discovered, please contact your nearest sales office or representative, or call TSI's Customer Service department at (800) 874-2811 (USA) or (001 651) 490-2811 (International) or visit
0Hwww.tsi.com.
®
PRO Respirator Fit
ii

Contents

Contents ....................................................................................................... 39Hiii
Introduction and Overview .......................................................................... 40H1
Database Operation When Operating in Stand-Alone Demo Mode.........
Registration .............................................................................................
Why Fit Test ............................................................................................
Preparations for Fit Testing .....................................................................
Precautions for Fit Testing.......................................................................
Chapter 1 Unpack and Verify Shipment.....................................................
41H1 42H1 43H2 44H2 45H2
46H5
Chapter 2 Getting To Know The PORTACOUNT
®
PRO
Respirator Fit Tester .............................................................................
The Touch Screen Display ......................................................................
Sampling Ports ........................................................................................
Electrical Connections .............................................................................
Alcohol Related Parts ............................................................................
Miscellaneous Parts ..............................................................................
Optional Accessories.............................................................................
Chapter 3 About Respirators and Fit Testing..........................................
Probed Test Respirators........................................................................
Probes for Filtering-Facepiece (Disposable) Respirators ......................
Inserting a Test Probe in a Disposable Respirator with the TSI
Model 8025-N95 Probe Kit.................................................................
Positive Pressure Respirators ...............................................................
Chapter 4 Conducting a Fit Test with the
PORTACOUNT
®
PRO
Respirator Fit Tester ...........................................................................
Step 1—Prepare the P
ORTACOUNT
®
PRO Respirator Fit Tester for
Fit Testing ..........................................................................................
Step 2—Attach Flash Drive and Select Database (optional) .................
Step 3—Run Daily Checks ....................................................................
Step 4—Conducting Fit Tests................................................................
Step 5—Record Results ........................................................................
Chapter 5 Operating Modes and User Interface......................................
Modes of Operation ...............................................................................
User Interface........................................................................................
New Exercise Name ..............................................................................
Setup Tab..............................................................................................
Chapter 6 Service and Maintenance ........................................................
Recalibration Interval.............................................................................
Status Messages ...................................................................................
47H7
48H7 49H7
50H9 51H11 52H12 53H15
54H17
55H17 56H18
57H19 58H23
59H25
60H26 61H29 62H30 63H32 64H38
65H41
66H41 67H42 68H46 69H47
70H49
71H49 72H49
iii
Reordering Supplies...............................................................................73H50
Shipping & Storage Precautions.............................................................
Changing the Alcohol Wick.....................................................................
Nozzle Cleaning .....................................................................................
Chapter 7 Troubleshooting........................................................................
On-line Troubleshooting Guides.............................................................
Appendix A Specifications ........................................................................
Flow Rate ...............................................................................................
Appendix B Theory of Operation ..............................................................
How the P How the P
ORTACOUNT ORTACOUNT
®
PRO Respirator Fit Tester Works.......................82H67
®
PRO Fit Tester Counts Particles ........................83H67
Appendix C Calculating Fit Factor............................................................
74H50 75H51 76H53
77H57
78H57
79H63
80H64
81H67
84H71
Appendix D Calculating Particle Concentration ......................................85H73
Appendix E Timing in Fit Test Mode.........................................................86H75
Appendix F Using the PORTACOUNT
Tester to Fit Test Positive Pressure Respirators...............................
®
PRO Respirator Fit
87H77
Appendix G The Rainbow Passage ..........................................................88H81
Index.............................................................................................................89H83
iv

Introduction and Overview

This manual describes both the Model 8030 P
ORTACOUNT
P tester without the use of F
®
PRO+ Respirator Fit Tester hardware and operation of the
ITPRO Fit Test Software.
The Model 8030 is designed to measure fit factors of masks with an efficiency of 99% or greater. The Model 8038 includes N95-Companion™ technology, which lets you measure any tight-fitting respirator including N95, P2, and P1 disposables.
Regardless of whether you intend to use the P Fit Tester with or without the F become familiar with this manual first. Many of the details in this manual that concern P
ITPRO Fit Test Software Manual.
F
ORTACOUNT
ITPRO™ Fit Test software, you should
®
PRO fit test operations are not repeated in the

Database Operation When Operating in Stand-Alone Demo Mode

ORTACOUNT
The P
®
PRO Respirator Fit Tester has an on-board (Demo) database that lets you perform all available operations, including adding data. Any changes you make to this Demo database, however, are lost when you power off the P
ORTACOUNT
®
PRO fit tester. They cannot be saved,
unless manually recorded.
If you want to save fit test results or other data when using the
ORTACOUNT
P controlled by the F
®
PRO Respirator Fit Tester in stand-alone mode (not
ITPRO Fit Test Software), you must have a USB flash
drive containing a valid database attached to one of the USB ports. (See the
ITPRO Fit Test Software User Manual for instructions on how to
F
configure the USB flash drive.)

Registration

Please fill out and mail the registration card that came with your instrument or register it online at
1H 2Hhttp://register.tsi.com. You may re-register at any time
to update our records. You will need your instrument model number and serial number.
Registration allows TSI to keep in-touch with you regarding important information concerning the TSI instrument(s) and software you own.
ORTACOUNT® PRO and 8038
ORTACOUNT
®
PRO Respirator
1

Why Fit Test

There are two primary reasons for respirator fit testing:
Verification of Training. After the individual has received respirator
training, a fit test checks that the person has learned how to properly put on and wear a respirator without assistance.
Sizing. It is important to make sure that the individual is issued a
respirator that is capable of providing protection when worn properly, that is, it is the right size.

Preparations for Fit Testing

Training the Trainer
The person conducting the fit test must have a clear understanding of respiratory protection, respirators, and fit testing to be effective. Anyone can master the operation of the P
ORTACOUNT
®
PRO Respirator Fit Tester simply by studying this manual, but the background knowledge required to proficiently fit test cannot be obtained from here. Consider attending a one-, two- or three-day seminar on fit testing provided by various consultants. Contact TSI for references.
Respirator Training
Respirator training is critical for any respiratory protection program. All employees who wear respirators must be taught how and why they are used. This training should be done prior to the fit test, not during the fit test. Consult the regulations or standards that pertain to your industry for information on training requirements. The P
ORTACOUNT
®
PRO Respirator Fit Tester includes a Real-time Fit Factor display that allows the user to see the results of changes he or she makes to the mask.

Precautions for Fit Testing

The following is a discussion of several precautions that should be considered prior to conducting a fit test:
Fit Testing People Who Smoke Cigarettes or Cigars
Smokers exhale particles for at least 30 minutes after they have smoked a cigarette or cigar. The P
ORTACOUNT
®
PRO fit tester can count these particles and will interpret them as if they were caused by face seal leakage. It is very important to instruct individuals not to smoke for at least 30 minutes prior to fit testing. Fit factors for anyone who has smoked recently will be lower than that individual deserves and may even cause him or her to fail the fit test entirely.
2 Introduction and Overview
Fit Testing with Generated Aerosols
ORTACOUNT
The P
®
PRO fit tester is designed to operate using the microscopic particles in the ambient air. It can measure particle concentrations and fit factors when generated aerosols (like corn oil, salt or DOP) are used, however, these aerosols may cause the
ORTACOUNT
P
®
PRO fit tester to need more frequent cleaning and
calibration.
Fit Testing Near Irritant Smoke
Do not conduct fit tests in close proximity to sources of irritant smoke like those used for qualitative fit testing. The irritant smoke is corrosive and can damage the P
ORTACOUNT
®
PRO Respirator Fit Tester. Fit
testing near sources of amyl-acetate (banana oil) is not a problem.
The TSI Web site
3Hhttp://fittest.tsi.com contains additional resources that you
may find useful.
Disclaimer: The measurement provided by the PORTACOUNT® PRO
Respirator Fit Tester is an assessment of respirator fit during a fit test only. Respirator fit at other times will vary. The fit factor value is not intended for use in calculating an individual's actual exposure to hazardous substances.
Introduction and Overview 3
Chapter 1
Unpack and Verify Shipment
The following items are included with the PORTACOUNT
®
PRO/PRO+
Respirator Fit Tester. If any are missing or damaged, please notify TSI immediately. Refer to
4HChapter 2 for photos and descriptions of each item.
Standard Items P
Qty Description
ORTACOUNT
®
PRO (Models 8030 and 8038)
9
1 PORTACOUNT® PRO Respirator Fit Tester Model 8030/8038 1 Stylus 1 Alcohol Cartridge 1 Alcohol Fill Capsule 1 Storage Cap 2 Zero Check Filter 2 Spare Alcohol Wicks 1 5 ft (1.5 m) Twin Tube Assembly 1 1/8 to 3/16 Tube Adapter 1 1/8 to 1/4 Tube Adapter 1 AC Adapter 16 30 ml Alcohol Bottles (480 ml total) 1 Operation & Service Manual (this manual) 1 FITPRO Fit Test Software Installation Guide 1 Carrying Case 1 FITPRO™ Fit Test Software
5
Standard Items P
Qty Description
ORTACOUNT
®
PRO (Models 8030 and 8038)
9
1 CD Holder 1 USB Cable 1 USB Flash drive
Additional Items P
Qty Description
ORTACOUNT
®
PRO+ (Model 8038 only)
9
1 Probe Assembly Tool 1 Probe Kit (100 pieces) 1 Neck Strap
6 Chapter 1
Chapter 2
Getting To Know The P
ORTACOUNT® PRO
Respirator Fit Tester
Use the numbered paragraphs and correspondingly numbered arrows to identify the touch screen display, connectors, parts, and accessories of the
ORTACOUNT
P following the instructions in this manual.

The Touch Screen Display

The touch screen display provides the interface to all operations. You can select items on the touch screen using your finger or the stylus that is provided. Do not use a pen, pencil or other sharp instrument, as this may damage the screen.
®
PRO fit tester. You need to be familiar with these items when
Stylus
On/Off Button

Sampling Ports

Sampling ports permit air to flow into and out of the P tester.
ORTACOUNT® PRO fit
7
2
1
3
1 The Sample Port is used when sampling air from a respirator during a fit
test. The clear tube marked "SAMPLE" of the Twin Tube Assembly (3) connects here. The Sample Port fitting is silver and marked with the letter "S".
2 The Ambient Port is used to sample ambient air during a fit test. The
blue tube marked "AMBIENT" of the Twin Tube Assembly (3) connects here. The Ambient Port fitting is blue and marked with the letter "A".
3 The Twin Tube Assembly consists of a pair of tubes: the Sample Tube
and the Ambient Tube. The Twin Tube Assembly is about 5.5 feet (1.7 meters) long. It must never be lengthened by more than a few inches for fit testing. The Sample Tube is 7 inches (18 cm) longer than the Ambient Tube.
The Twin Tube must not be lengthened except for the few inches added
by a Tube Adapter. The two sample tubes must be nearly the same length for accurate fit testing.
8 Chapter 2

Electrical Connections

4
5
6
4 The USB Series “B” receptacle provides for communication between
ORTACOUNT
the P cable provided with the P
®
PRO fit tester and a USB port on the PC. The USB
ORTACOUNT
®
PRO fit tester connects here.
5 Two USB Series “A” receptacles let you connect a USB mouse, USB
keyboard, or a USB flash drive (thumb drive).
6 The External Power Connector connects the AC Adapter to the
P
ORTACOUNT
®
PRO fit tester.
Getting to Know the PORTACOUNT
®
PRO Respirator Fit Tester 9
7
7 The AC Adapter plugs into the External Power Connector on the
ORTACOUNT
P
®
PRO fit tester and an AC wall outlet. The AC Adapter
senses the input voltage automatically.
10 Chapter 2

Alcohol Related Parts

12
13
9
8
10
11
8 The Alcohol Cartridge holds the isopropyl alcohol consumed by the
ORTACOUNT
P
®
PRO fit tester. A porous wick inside is soaked with
alcohol.
9 The Cartridge Cavity is where the Alcohol Cartridge is inserted during
use. Make certain dirt and lint do not enter the Cartridge Cavity. Cover the Cartridge Cavity with the Storage Cap (10) when the instrument is not being used.
10 The Storage Cap is used to cover either the Cartridge Cavity of the
ORTACOUNT
P
®
PRO fit tester or the Alcohol Fill Capsule, whichever
does not currently hold the Alcohol Cartridge.
11 Two spare Alcohol Wicks are included with the P
ORTACOUNT
®
PRO fit
tester.
12 The Alcohol Fill Capsule is used to store and fill the Alcohol Cartridge.
13 The P
ORTACOUNT
®
PRO fit tester is shipped with 16 bottles of reagent grade (99.5% or better) isopropyl alcohol. Each bottle contains 30 ml. The instrument consumes alcohol at approximately 2 ml per hour and the alcohol wick holds approximately 13 ml of alcohol. Do not use isopropyl alcohol that is less than 99.5% pure.
Getting to Know the PORTACOUNT
®
PRO Respirator Fit Tester 11

Miscellaneous Parts

21
19&20
16
22
15
17
14
23
18
14 Spare Sampling Port Inlet Screens. These screens are used to help keep
ORTACOUNT
the P
®
PRO fit tester internal flow path clean by capturing
large or fibrous particles.
15 Two Tube Adapters are shipped with each P
ORTACOUNT
®
PRO fit tester. The adapters are used to connect the Sample Tube to a respirator sample fitting (or probe) that is larger than the 1/8 inch (3 mm) inside diameter of the Sample Tube. One of the Tube Adapters fits 3/16 inch (4.7 mm) fittings and the other fits 1/4 inch (6.3 mm) fittings. An adapter is not needed for respirators equipped with a 1/8 inch (3 mm) fitting.
12 Chapter 2
16 The Zero Check Filter is provided for the Zero Check and Max
FitFactor Check on the P
ORTACOUNT
®
PRO fit tester to make sure it is
working properly. A spare filter is also provided.
Note: TSI recommends that the Zero Check Filter be left attached to
the sample line whenever the P
ORTACOUNT
®
PRO fit tester is turned on but not in use. This prevents lint and debris from being drawn into the instrument and blocking the airflow.
17 The P
ORTACOUNT
®
PRO/PRO+ Respirator Fit Tester Operation &
Service Manual (this manual). Visit the TSI Web site
5H6Hhttp://fittest.tsi.com to download the current version of most TSI
manuals.
18 The F
ITPRO™ Fit Test Software Installation Guide. Visit the TSI Web
7H8Hhttp://fittest.tsi.com to download the current version of most TSI
site manuals.
19 This Compact Disc (CD) contains F
ITPRO Fit Test Software for
Windows in addition to manuals and other information related to TSI fit testing products and fit testing in general. There is no printed F
ITPRO
software manual in lieu of the online help.
20 The CD that contains the F
ITPRO Fit Test Software is located in one
of these convenient storage cases.
21 The Carrying Case provides protection and convenience. The case is
designed to hold the P
ORTACOUNT
®
PRO fit tester and standard
accessories.
22 USB Cable. The USB Cable is used to connect the P
fit tester to a computer. It is needed whenever the F used to interface and control the P
ORTACOUNT
23 USB Flash Drive. The flash drive holds active databases and lets you
select and use the active database in the P
ORTACOUNT
ORTACOUNT
ITPRO Software is
®
PRO fit tester.
®
PRO fit tester in stand-alone mode. Without a flash drive, you cannot store information and test data collected or updated when using the P
in stand-alone mode. The flash drive is used to exchange database
tester data between the P
ORTACOUNT
®
PRO fit tester and the FITPRO
ORTACOUNT
®
PRO
®
PRO fit
software. (See the FITPRO Fit Test Software User Manual for instructions on how to configure the USB flash drive.)
Getting to Know the PORTACOUNT
®
PRO Respirator Fit Tester 13
Additional Items (Model 8038 only)
26
24
25
24 Probe Assembly Tool. Used to install the sampling probes in filtering-
facepiece (disposable) respirators.
25 Probe Kit. Includes 100 disposable probes.
26 Neck Strap. Supports the Twin Tube assembly when sampling running
fit tests on filtering-facepiece (disposable) respirators.
14 Chapter 2

Optional Accessories

27
27 Model 8026 Particle Generator (optional). If you do not have the
minimum 1000 particles/cm
ORTACOUNT
the P
®
PRO fit tester to do a fit test, this optional particle
3
ambient particle concentration needed for
generator supplements naturally occurring room concentration with non-toxic salt (NaCl) particles in the right size range for the
ORTACOUNT® PRO fit tester. Refer to the Model 8026 Particle
P Generator information on the TSI Web site
9Hhttp://software.tsi.com.
Getting to Know the PORTACOUNT
®
PRO Respirator Fit Tester 15
Chapter 3
About Respirators and Fit Testing
The conventional way to quantitatively fit test is through the use of probed test respirators, but fit tests can also be performed on disposable respirators and positive pressure respirators. This chapter discusses the types of respirators and provides instructions on installing a sampling port to a disposable filtering-facepiece.

Probed Test Respirators

A probed respirator has a fitting (probe) installed that allows air from inside the respirator to be sampled by an instrument like the P tester. The probed respirator is only used for fit testing and cannot legally be used in a hazardous environment. You will need at least one respirator of each make, model and size your company issues. After the fit test, the individual should be issued a respirator with the identical facepiece, only without the probe.
Most probed respirators are obtained from the respirator manufacturer or distributor. You should be able to buy probed versions of most if not all models. Be sure to buy class-100 or class-99 filters also if you don't already stock them. You must use class-100, class-99, or P3 filters for fit testing even if you use another type of cartridge in the workplace.
ORTACOUNT
®
PRO fit
17

Fit Testing with the Person's Own Assigned Respirator

g
A
Adapter
Some respirators, especially older models, do not have fit test adapters available. In that case, a permanently probed test respirator is the only option.
ORTACOUNT PRO
To P
dapter’s Inhalation Valve
Sample Inlet
Class-100 Filter
e
Cartrid
Sampling
Sample Tube
Cap
Suction Cup
Respirator Manufacturers' Technique
There are a growing number of respirator manufacturers who provide sampling adapters that permit fit testing in one's own respirator. Contact your distributor or call the manufacturer direct and ask if such accessories are available.
TSI Fit Test Adapter Kits
TSI Sampling Adapters allow you to fit test using the respirator that is actually used by that individual. Sampling Adapters for most major brands of respirator are available. A complete list of fit test adapters available from TSI and from respirator manufacturers is posted on the TSI Web site
10Hhttp://fittest.tsi.com.
Homemade Adapters
A sampling adapter can be made by modifying a respirator cartridge. This usually involves running a tube through the cartridge and into the respirator. TSI recommends that you avoid this option because it is so easy to do poorly. The most fundamental mistake that is often made is to not extend the sampling tube through the inhalation valve and into the breathing zone. This combined with problems sealing around the outside of the tube make this option unattractive.

Probes for Filtering-Facepiece (Disposable) Respirators

Disposable respirators can be fit tested by inserting a test probe through the filter material. The optional TSI Model 8025-N95 Probe Kit includes disposable probes and insertion tools. Order TSI Model 8025-N95R Probe Refill Kit for additional probes (no tools).
18 Chapter 3
Note: The PORTACOUNT® PRO Model 8030 can successfully fit test class-
100, class-99, and P3 disposable respirators. Lower efficiency disposable respirators such as class 95, P2, and P1 will usually require use of the P
ORTACOUNT
®
PRO+ Model 8038.

Inserting a Test Probe in a Disposable Respirator with the TSI Model 8025-N95 Probe Kit

To perform a quantitative fit test, the P
ORTACOUNT® PRO fit tester must
draw an air sample from inside the respirator while it is being worn by the person being fit tested. The tools, sampling probes and push nuts contained in the probe kit lets you install a sampling port onto any disposable filtering­facepiece respirator.
WARNING
Once a sampling probe has been installed, the respirator can not be used for respiratory protection. Ported respirators are for quantitative fit testing only. Discard (or sanitize) the respirator after each fit test is completed. (Follow the respirator manufacturer’s recommendations.)
1. Choose a location to install the sample probe.
For proper fit testing, the sampling point must be in the “breathing
zone” of the respirator user. For most respirators, this is in the center of the respirator between the person’s nose and mouth.
About Respirators and Fit Testing 19
For flat “duckbill” style respirators, install the probe near the outer edge of the bottom panel where it cannot be blocked by the person’s chin.
Bottom panel shown
For respirators with center-mounted exhalation valves, install the probe to the left or right of the valve. Do not install the probe above or below the valve because this risks having the probe blocked by the person’s nose or chin.
Correct probe location to left (or right) of valve
Wrong probe location below (or above) valve
20 Chapter 3
For respirators with an outer mesh, install the probe normally as if the mesh was not present. The sampling probe and push nut will seal properly right through the mesh.
2. Slide the sampling probe onto the piercing tool. As the pointed end of
the piercing tool is very sharp, be extremely careful when handling it!
Sampling Probe
3. Choose a location on the mask that is in front of the person's
nose/mouth region. Avoid seams and folds in the mask.
4. Pierce the mask at the selected location, using the piercing tool with the
loaded sampling probe. Be sure to pierce the mask from the inside!
About Respirators and Fit Testing 21
Push Nut
Positioned on Anvil Tool
Sampling Probe
Pushed Through Mask
5. Push the sampling probe through the mask until the end of the tool point
is visible from the outside of the mask. Leave a few millimeters of the tool point visible.
6. Place the push nut on the anvil tool with the "dished" side up. A magnet
prevents the push nut from falling off.
7. Position the anvil tool, with the loaded push nut, over the protruding
point. The mask should now be pinched between the two tools.
8. Press the two tools firmly together to force the push nut as far as
possible onto the probe. The mask material should be tightly pinched and the mask, sampling probe, and push nut should be joined together as illustrated.
Push the Tools Together to Fasten the Probes
22 Chapter 3
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