OHD Quantifit2 User manual

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Contents
CHAPTER 1 Introduction ................................................................................................................ 7
Welcome ................................................................................................................ 7
Safety & Environmental .......................................................................................... 8
Cross Contamination .............................................................................................. 8
CHAPTER 2 How the QuantiFit2 Works ...................................................................................... 10
Fit Factor Explanation .......................................................................................... 10
CHAPTER 3 Instrument Setup ..................................................................................................... 12
What's Included? .................................................................................................. 12
Unpacking ............................................................................................................ 12
Instrument Front Connections .............................................................................. 14
Instrument Back Connections .............................................................................. 15
Connecting Tubes ................................................................................................ 16
Battery .................................................................................................................. 16
Daily Verification ................................................................................................... 18
CHAPTER 4 Startup Wizard ......................................................................................................... 19
Navigation ............................................................................................................ 20
CHAPTER 5 People ....................................................................................................................... 23
CHAPTER 6 Performing A Test .................................................................................................... 26
CHAPTER 7 Reports ..................................................................................................................... 28
CHAPTER 8 Daily Verification ...................................................................................................... 30
CHAPTER 9 Settings ..................................................................................................................... 31
System Settings ................................................................................................... 31
System Info .......................................................................................................... 32
Setup Respirators ................................................................................................ 32
Admin Menu ......................................................................................................... 33
Setup Operators .............................................................................................. 33
Add Parameter ................................................................................................ 33
Change Regulation ......................................................................................... 34
System Reset .................................................................................................. 34

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Contents
Update Software .................................................................................................. 35
CHAPTER 10 OHD Logic Software ................................................................................................ 36
CHAPTER 11 Installation ................................................................................................................ 37
CHAPTER 12 Wizard ....................................................................................................................... 38
CHAPTER 13 Software Updates .................................................................................................... 40
CHAPTER 14 Home Screen ............................................................................................................ 41
Test Creator ......................................................................................................... 42
Add Person .......................................................................................................... 43
Past Due Viewer .................................................................................................. 44
Previous Tests ..................................................................................................... 44
Test Statistics ....................................................................................................... 44
CHAPTER 15 People ....................................................................................................................... 45
CHAPTER 16 Company ................................................................................................................... 46
CHAPTER 17 Tests .......................................................................................................................... 47
CHAPTER 18 Settings ..................................................................................................................... 49
Security ................................................................................................................ 49
Options ................................................................................................................. 50
Respirators ........................................................................................................... 51
Respirator List ................................................................................................. 51
Respirator Sizes .............................................................................................. 52
Parameters ..................................................................................................... 52
Update .................................................................................................................. 52
About .................................................................................................................... 52
CHAPTER 19 Reports ..................................................................................................................... 53
CHAPTER 20 Troubleshooting ...................................................................................................... 54
Graph Behavior .................................................................................................... 54
Failing Fit Factors ................................................................................................. 57
Trouble Passing Fit Test ...................................................................................... 58
Verification Check Errors ..................................................................................... 59
CHAPTER 21 Service ...................................................................................................................... 61
Calibration and Maintenance ............................................................................... 61
CHAPTER 22 Terms & Conditions ................................................................................................. 63
Standard Terms and Conditions .......................................................................... 63

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Contents
Software License Agreement ............................................................................... 65
CHAPTER 23 Appendix A: Specifications .................................................................................... 66
CHAPTER 24 Appendix B: Import Personnel Template .............................................................. 67
CHAPTER 25 Appendix C: Terminology ....................................................................................... 68
CHAPTER 26 Appendix D: CNP Diagram ...................................................................................... 70
CHAPTER 27 Appendix E: Regulations ........................................................................................ 71
CHAPTER 28 Appendix F: Fit Test Adapters ................................................................................ 73

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Chapter 1 | Introduction |
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Introduction
QuantiFit2 & OHD Logic Software
© All rights reserved. No parts of this work may be reproduced in any form or by any means -
graphic, electronic, or mechanical, including photocopying, recording, taping, or information
storage and retrieval systems - without the written permission of the publisher. OHD provides
this electronic copy which may be printed only for our customer’s use.
Products that are referred to in this document may be either trademarks and/or registered
trademarks of the respective owners. The publisher and the author make no claim to these
trademarks.
While every precaution has been taken in the preparation of this document, the publisher and
the author assume no responsibility for errors or omissions, or for damages resulting from the
use of information contained in this document or from the use of programs and source code
that may accompany it. In no event shall the publisher and the author be liable for any loss of
profit or any other commercial damage caused or alleged to have been caused directly or
indirectly by this document.
For further information, please contact the manufacturer:
OHD, LLLP
2687 John Hawkins Pkwy | Hoover, AL 35244 | U.S.A
+1.205.980.0180 | www.ohdglobal.com
[email protected] | techsu[email protected]
VERSION 1.52 12-15-2020
Welcome
The QuantiFit2 can be used with or without OHD Logic software. When testing without a
computer, all reports and test data may be retrieved from the instrument. Or, at a later time,
data can be imported into Logic software (when Logic and the QuantiFit2 have been set up for
merging or synchronizing data). The instrument is not compatible with FitTrack Gold, which
comes with the original Quantifit. However, the data from FitTrack Gold can be imported into
OHD Logic software.
This instrument portion of the manual will contain instructions for using the instrument without
the software.
CAUTION: If you plan to synchronize or merge data to a computer database, it is
imperative that you first set up Logic software and transfer the test subjects and other
information into the QuantiFit2. Please see the software section of this manual for
assistance and instruction.
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8Chapter 1 | Introduction | Safety & Environmental
1
Introduction
Safety & Environmental
The instrument and related documentation must be reviewed for familiarization with safety
markings and instructions before operating the instrument.
Environmental Conditions - The QuantiFit2 is for use at an altitude up to 2,000m (6,500 ft.) with
a temperature range of 5 to 40 degrees C, maximum relative humidity of 80% non-condensing
and pollution degree 2.
Any use of the QuantiFit2 that is not outlined in this manual may invalidate the protection of
the instrument.
The QuantiFit2 comes with an external power supply that must be used for powering the
instrument when not using the optional battery pack. If the power supply becomes faulty or
damaged, it must be replaced. A power supply with the ratings listed in the Specifications
Appendix must be used (100-240VAC, 50/60 Hz, 1A Max).
Under abnormal conditions, such as static discharge, it may be necessary to cycle power to
achieve proper operation.
Caution - The CAUTION symbol denotes a hazard. It calls attention to a procedure,
practice, or the like, which, if not correctly performed or adhered to, could result in
damage to or destruction of part or all of the instrument or data. Do not proceed
beyond a CAUTION symbol until the indicated conditions are fully understood and met.
Cross Contamination
OHD takes the safety and health of our customers very seriously. With this in mind, we believe
it is important to address concerns about possible cross contamination during fit testing. The
risk of cross contamination resulting from the use of a QuantiFit2 is very minimal. Fit Testing
itself does not increase or decrease a person’s risk of exposure to any virus or illness. The real
threat is coming into close contact with an infected person no matter the location or activity.
The QuantiFit2 does not trap air in its system either before, during or after a fit test. The
QuantiFit2 does not push air into the mask. The QuantiFit2 pulls air away from the test subjects
mask and vents it out of the system. This means that the chances of contaminated air being in
the system are, at worst, no more likely than contaminated air being in the surrounding
environment. If an infected person were to be fit tested, there is no more risk of contaminated
air being trapped and subsequently released on a succeeding fit test than there is just by
walking into the fit test area.
The QuantiFit2 and accessories are subject to surface contamination like any item in the test
area. Before and after fit test steps, when the test subject is wearing a respirator, his or her
inhalation is coming through inlets in the OHD adapter kit and the vast majority of exhalation
should travel through the exhalation valve and out of the respirator. There are many potential
mask and adapter configurations. The chance could exist in a configuration that exhaled breath
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9
Chapter 1 | Introduction | Cross Contamination
1
Introduction
could make contact with internal areas of an adapter kit. If it is suspected this has happened,
disinfection would be appropriate.
For protection against the transference of surface contamination, all possibly contaminated
surfaces the operator or subjects may contact need to be disinfected. This includes the
QuantiFit2 and accessories. The adapter kits may be cleaned either by immersion, spray or wipe
from an EPA approved disinfectant as these have been shown to efficiently inactivate over 99%
of microorganisms (to include COVID-19) within a minute. The adapter should be dry before
use in a fit test. The QuantiFit2 tubing should be carefully wiped down with an EPA approved
disinfectant.
If there is a threat of contamination, the fit test operator should take precaution when carrying
out fit testing according to the guidance provided by the CDC.
If masks are shared for fit testing, the fit test operator should follow OSHA 1910.134 Appendix
B-2 Respirator Cleaning Procedures or the manufacturer’s guidelines for the disinfection of the
respirator to avoid any cross contamination.
See 26 Appendix D: CNP Diagram for an air-flow diagram with Controlled Negative Pressure
and the QuantiFit2 system.
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10 Chapter 2 | How the QuantiFit2 Works |
2
How the QuantiFit2 Works
The QuantiFit2 measures face-to-facepiece fit and integrity of a respirator. With a perfect
respirator and fit, all inhaled air is forced through the filter system, thereby providing maximum
respiratory protection for the individual. If there is leakage at the face seal or through
imperfections in the respirator, unfiltered air bypasses the filter system and enters the
respirator, thus reducing respirator’s ability to protect from contaminants. The QuantiFit2
directly measures air leakage in cubic centimeters per minute (cc/min) and then calculates the
fit factor (FF).
The QuantiFit2 functions by creating and maintaining a negative pressure in the respirator.
Once the adapter valve is closed, sealing the respirator, the QuantiFit2 removes air from the
respirator until the challenge pressure is reached.
When the challenge pressure is reached, if there isn’t a leak, the QuantiFit2 doesn’t remove any
more air from the respirator. If there is a leak, air enters the respirator. The QuantiFit2 then
removes air from the respirator until the challenge pressure returns to the targeted value. This
process continues for 8 seconds, and then the test step ends.
During the fit test, the QuantiFit2 measures exactly how much air the instrument removed from
the respirator after reaching the challenge pressure. This measurement is equivalent to the leak
rate.
Challenge pressure, expressed in inches of H20, is the maximum partial vacuum created in a
correctly fitting respirator when the user is working at a moderate to high rate. The modeled
breathing rate is the calculated total inspiration for one minute.
The modeled breathing rate is expressed in liters per minute (LPM), and is multiplied by 1,000
to provide cc/min, it is then divided by the leak rate in cc/min. This is the fit factor ratio. It is a
ratio of the total inhalation pressure to the air that leaked into the respirator.
Fit Factor Explanation
The ratio of the modeled breathing rate to the measured leak rate is the calculated fit factor
and is expressed by the following equation:
The modeled breathing rate (MBR) is the rate at which an individual could be expected to
breathe under moderate to heavy working conditions. The MBR is predetermined for the
standard respirator types. The MBR is calculated from the parameters specified by the operator
for custom respirators.

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Chapter 2 | How the QuantiFit2 Works | Fit Factor Explanation
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How the QuantiFit2 Works
The measured leak rate (MLR) is directly related to respirator fit and integrity. All fit factors are
calculated from the MLR. The leak rate is specified in cc/min.
The overall fit factor is calculated by using the harmonic mean of the fit testing steps as follows:
Where:
N = The number of exercises;
FF1 = The fit factor for the first exercise; and
FF2 = The fit factor for the second exercise; and
FFN = The fit factor for the nth exercise

12 Chapter 3 | Instrument Setup |
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Instrument Setup
What's Included?
What’s included with the QuantiFit2?
oThe QuantiFit2 Respirator Fit Tester
oTriple tube set
oPower supply and power cord
oUSB cable
oHard case with
extendable
handle and
wheels
What other accessories are available?
oRespirator adapters to interface with the QuantiFit2 (required for fit testing)
oRechargeable battery pack
oExternal battery charger
oPrinter (standard printer and/or card
printer)
oUSB Keyboard
oTrigger button
The QuantiFit2 Carrying Case
A. Power cord
B. Batteries (optional)
C. Adapters (optional)
D. Power Supply
E. USB Cable
F. Tube Assembly
G. Additional Storage
Unpacking
The QuantiFit2 case can contain all of the necessary materials for performing fit tests. There are
no consumables required to be purchased or used.

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Chapter 3 | Instrument Setup | Unpacking
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Instrument Setup
oRelease the two latches on the front of the case by depressing a moveable lever under each
latch.
oOpen the lid of the case
oTubes and power supply will be found in the oblong cavities of the inner case
oAdditional accessories may be stored in the provided spaces at the bottom of the case
· There is a place for several adapter packages
· Spare batteries
· Cords, cables and tubes
oCarefully lift out the QuantiFit2 by holding the handle and the bottom of the instrument
· Place the instrument on a solid, level surface with ample surface room
· Connect the power supply into the back of the instrument, and the power cord to a wall
outlet (unless using a battery that has been properly charged)
· Turn on the instrument with the rocker switch on the rear panel
· Follow the startup wizard (during initial setup only)
· Follow instructions for Daily Verification Check
· Ready to test

14 Chapter 3 | Instrument Setup | Instrument Front Connections
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Instrument Setup
Instrument Front Connections
A. Carrying Handle
B. Color Touch Screen
C. Clear Tube Connection
D. Gray Tube Connection
E. Blue Tube Connection
F. Verification Connection for Gray Tube
G. Verification Connection for Clear Tube
H. Verification Connection for Blue Tube
I. Verification Connections
J. Instrument Exhaust Port

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Chapter 3 | Instrument Setup | Instrument Back Connections
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Instrument Setup
Instrument Back Connections
A. On-Off Switch - The On-Off Switch functions
like a standard power switch. Toggle up ( | )
and the power is turned on. Toggle the switch
down (o) and the power is turned off.
B. 12 VDC, 3A (max) Power Connection - The
power connection is to supply power to the unit,
and the universal power supply that was
shipped with the QuantiFit2 must be used.
C. Trigger Button Connection – If the optional
Trigger Button is used to initiate test steps, it
must be inserted into this port.
D. USB Devices (4) - The four standard USB ports
may be used to connect a Keyboard, printer,
USB memory stick, or other useful devices.
E. USB PC Port - The USB PC Port is used to
connect the QuantiFit2 to a personal computer.
The QuantiFit2 is shipped with a supplied cable
for this purpose. The USB symbol on the cable
must face up to properly insert this cable. This
cable allows for the QuantiFit2 to be operated from the supplied software.
F. Serial Number – Located in the center, the serial number is important should you require
service or support. All records are kept according to the serial number.
G. Battery Latch – Push down on this latch to release the battery pack and pull outward to
remove it.
H. Battery Pack (optional) or Cover – When using an optional battery pack to operate the
QuantiFit2, it will be inserted here. When no battery pack is purchased, this cavity will be
filled with a blank cover.
I. Bluetooth Module (not shown) - When purchased with the Bluetooth function, the
QuantiFit2 can wirelessly connect to a computer with Bluetooth capability. The QuantiFit2
allows users to run countless machines simultaneously through the OHD Logic software (as
many machines as an operator is capable of overseeing), with flexibility on the start time for
any test. Standard Bluetooth allows testing to happen from across the room.

16 Chapter 3 | Instrument Setup | Connecting Tubes
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Instrument Setup
Connecting Tubes
On the instrument
oIt is best to connect the metal quick connects while
holding onto the tube and not the connection. The
metal quick connect will click into place.
oThe tubing set consists of three tubes colored blue,
gray, and transparent.
oOut of the six ends of the tube assembly, there is only
one male connection, which will always go into the large
circle on the front of the unit. The other two tubes
should be attached to the color-coded ports.
oWhen performing a daily verification, the opposite ends of the tubes should be matched
with the corresponding colors on the bottom row of the front panel.
On the respirator
oIt is best to connect the metal tubing fixtures
while holding onto the tube and not the
fixture. The metal fixture will click into place.
oThe blue tube will always connect to the
single port connection.
oThe gray and transparent tubes will be connected to the port connectors that are side-by-
side. The two connections are interchangeable on the adapter and can be placed on either
port.
Battery
oThe optional battery pack will allow the operator to run tests without a power cord whether
for convenience or lack of power.
oWhen a battery is in place, if the QuantiFit2 is plugged
into a wall outlet and the building loses power, the
battery will automatically take over without any
interruption to the fit test.
oThe battery may be charged while connected to power
whether using the QuantiFit2 or not.
oAn optional battery charger is available to charge the battery outside of the QuantiFit2.
oWhen fully charged, the battery typically yields approximately four hours of normal-use
testing.

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Chapter 3 | Instrument Setup | Battery
3
Instrument Setup
oLithium Battery Hazards (From OSHA Safety and Health Information Bulletin SHIB 06-20-
2019):
· Lithium batteries are generally safe and unlikely to fail, but only so long as there are no
defects and the batteries are not damaged. When lithium batteries fail to operate safely
or are damaged, they may present a fire and/or explosion hazard. Damage from
improper use, storage, or charging may also cause lithium batteries to fail. Testing
batteries, chargers, and associated equipment in accordance with an appropriate test
standard (e.g., UL 2054). NRTL certification (where applicable), and product recalls, help
identify defects in design, manufacturing, and material quality.
· Damage to lithium batteries can occur immediately or over a period of time, from
physical impact, exposure to certain temperatures, and/or improper charging.
· Physical impacts that can damage lithium batteries include dropping, crushing, and
puncturing.
· Damage to all types of lithium batteries can occur when temperatures are too high
(e.g., above 130°F). External heat sources (e.g., open flames, heaters, etc.) can also
accelerate failure in cells with defects or damage from other causes.
· Damage to lithium-ion batteries can occur when the batteries themselves or the
environment around the batteries is below freezing (32°F, 0°C) during charging.
Charging in temperatures below freezing can lead to permanent metallic lithium
buildup (i.e., plating) on the anode, increasing the risk for failure.
· Heat released during cell failure can damage nearby cells, releasing more heat in a
chain reaction known as a thermal runaway. The high energy density in lithium batteries
makes them more susceptible to these reactions. Depending on the battery chemistry,
size, design, component types, and amount of energy stored in the lithium cell, lithium
cell failures can result in chemical and/or combustion reactions, which can also result in
heat releases and/or over-pressurization.
· In chemical reactions, by-products from the electrolyte solution and electrodes can
increase the pressure in the cell to the point where the cell walls expand and by-
products leak out. Chemical by-products usually include carbon monoxide, carbon
dioxide, hydrogen, and hydrocarbons. In many cases, the by-products are also
combustible and could ignite.
· In combustion reactions, a thermal runaway releases byproducts that may ignite to
cause smoke, heat, fire, and/or explosion. The by-products from a lithium battery
combustion reaction are usually carbon dioxide and water vapor. In some lithium
batteries, combustion can separate fluorine from lithium salts in the battery. If mixed
with water vapors, fluorine may produce hydrofluoric acid, which is particularly
hazardous because workers may not feel its effects until hours after skin exposure.

18 Chapter 3 | Instrument Setup | Daily Verification
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Instrument Setup
Daily Verification
The daily verification is required for each day of
testing. The purpose is to confirm that the
instrument is working properly.
The daily verification test measures the leak rate
of the leak orifice on the triple tube assembly at
various pressure levels, and confirms that the
diaphragm pump and other processes are
working correctly.
See the 8 Daily Verification section for more information.
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Chapter 4 | Startup Wizard |
4
Startup Wizard
The Startup Wizard will walk the Operator through a few initial settings that are required on the
unit. All these settings can be changed in the Instrument Settings section.
Language
oThe current languages available on the
QuantiFit2 are English, French, Italian and
Spanish.
oAdditional languages may become available.
Use PC and/or synchronization to database
oA notification appears to explain that in order
to synchronize or merge data onto your PC or other sources, you must first load all people
into the included OHD Logic Software and then transfer the data to the QuantiFit2 via a
USB thumb drive or the provided USB cable.
· People that are added directly to the instrument itself might not synchronize or merge
with another database.
· A decision should be made as to whether this data function will be necessary
now or in the future so that the synchronizing feature will perform as expected.
Regulation
oThe operator will be required to select the
regulation that will be followed for testing in
any specific region. This can be changed in the
Settings screen if there is a need to switch
regulations.
oThe regulation controls all the test parameters:
§ The steps and exercises to be followed.
§ Modeled breathing rate, challenge pressure, and minimum passing fit factor for each
respirator type.
§ For a more complete understanding of regulations, please see Appendix E .
Respirator Selection
oFind the respirator(s) that will be used for fit
testing, and toggle the on/off switch to on.
oIf a particular respirator has not been
determined, you may select any respirator and
continue. This can be changed later in the
Setup Respirators section.
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20 Chapter 4 | Startup Wizard |
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Startup Wizard
Operator
oFor every test performed on the QuantiFit2, an operator must be assigned to the record.
oThe Operator screen is used to add/edit
operators in the database.
oEnter one or more operator. Additional
operators may be added in the Instrument
Setup section. See Setup Operators for
more information.
Daily Verification Check Wizard
oThis section will guide the operator through the procedure of doing a daily verification
check on the instrument.
oThis must be performed every day of testing.
oUpon starting the instrument each day, the Daily
Verification screen will appear.
oSee the Daily Verification section of this
manual for more information.
People/Test
oAfter the instrument check has been
performed, the wizard will move on to the
People screen.
oPeople can be added one by one, imported
from a list, or added at the time of a
test. CAUTION: If the QuantiFit2 data is
to be synchronized or merged with the
database in Logic software, the list of names
must first be transferred into the QuantiFit2 from the software. See instructions in the
software setup section .
oThe people screen is the last screen in the setup wizard. The operator may close this
window or perform fit tests. See 6 Performing a Test instructions in this manual.
Navigation
The QuantiFit2 is operated by the color display on the front of the instrument.
When pressing any button, there will be a “click-tone.” The volume of this tone can be changed
in the System Settings menu.
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