Sibata MT-05U User manual

CODE 090200-081
Thank you very much for purchasing our product.
● This operation manual contains important safety information and product handling instructions.
● Before use, read through this operation manual to ensure safe and proper use.
● After reading through this operation manual, keep it in a safe place for future reference.
OPERATION MANUAL (for Main Unit)

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Table of Contents
1Before use ......................................................................................................................... 3
1-1 About the operation manual................................................................................................ 3
1-2 About the package contents ............................................................................................... 3
1-3 Limited warranty ................................................................................................................. 4
2Important safety information ........................................................................................... 5
2-1 User (Important).................................................................................................................. 5
2-2 Graphical symbols .............................................................................................................. 5
2-3 Caution labels..................................................................................................................... 7
3About this product............................................................................................................ 8
3-1 Overview............................................................................................................................. 8
3-2 Features.............................................................................................................................. 8
3-3 Principle of measurement................................................................................................... 9
3-4 Measurement modes........................................................................................................ 12
3-5 Precautions....................................................................................................................... 13
3-6 Names of parts and components ..................................................................................... 15
4Set-up............................................................................................................................... 16
4-1 Supplying the power ......................................................................................................... 16
4-2 Turning ON the power switch ........................................................................................... 16
4-3 Main Menu screen............................................................................................................ 17
4-3-1 Version information check...................................................................................... 17
4-4 Getting ready for measurement........................................................................................ 18
4-4-1 Connecting the sampling tubes ............................................................................. 18
4-4-2 Selecting the connection method to the mask....................................................... 18
4-4-3 Checking and adjusting the flow rate and checking the concentration of
particles in ambient air.......................................................................................... 20
4-4-4 When condensation occurs in the Test Guide(s) or the sampling tube(s)............ 20
5Measurement................................................................................................................... 21
5-1 Measurement screen configuration .................................................................................. 21
5-1-1 Code No. Input....................................................................................................... 24
5-2 Fit Test mode .................................................................................................................... 25
5-3 Daily Check mode ............................................................................................................ 31
5-4 Fit Check mode ................................................................................................................ 33
5-5 Training mode................................................................................................................... 35
6Settings............................................................................................................................ 37
6-1 Setting menu .................................................................................................................... 37
6-2 Basic workflow of making settings.................................................................................... 38
6-3 Fit Test settings................................................................................................................. 42
6-4 Fit Check settings ............................................................................................................. 45
6-5 Daily Check settings ......................................................................................................... 46
6-6 Training settings................................................................................................................ 47
6-7 Date and time settings...................................................................................................... 48
6-8 Basic settings.................................................................................................................... 49
6-9 Log data............................................................................................................................ 51
7External output................................................................................................................ 52
8Maintenance .................................................................................................................... 55
8-1 Inspection ......................................................................................................................... 55
8-2 Operation check using clean air ....................................................................................... 55
8-3 Cleaning and storage ....................................................................................................... 56
8-4 About consumables .......................................................................................................... 56
8-5 Backup battery replacement............................................................................................. 57
9Troubleshooting.............................................................................................................. 58
10 Main specifications......................................................................................................... 59
11 Warranty, repair, etc........................................................................................................ 61

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1 Before use
1-1 About the operation manual
● The operation manual for this product consists of two parts. For the use of the PC software, refer
to the operation manual (for the PC software).
● We have released following latest version to improve the function of this instrument. For the
operation method, please refer to the following and subsequent versions.
SYSTEM VERSION 2.20
FIRMWARE VERSION 2.20
SIBATA Fit Test Software 2.20
● The content of this operation manual is subject to change without prior notice for product
improvement or other reasons.
● Great care has been taken in the creation of this manual; however, should any questionable points,
errors, or omissions be apparent, please contact us.
● Copyright © 2021 Sibata Scientific Technology Ltd. All rights reserved. This document is
copyrighted by Sibata Scientific Technology Ltd. The information contained herein shall not be
copied, reproduced, or changed wholly or in part without prior written permission from Sibata
Scientific Technology Ltd.
● This manual uses the following notational conventions for terms, indications, and operations related
to this product.
[XXX]: Brackets [ ] are used for items displayed on the case / touch panel, such as names of
operation buttons.
1-2 About the package contents
Unpack and make sure that none of the following items is missing or damaged:
□MT-05U main unit .................................................... 1 unit
□AC adapter (fitted with a plug; supplied with three spare plugs) .............. 1 pc
□Sampling tube (pair tube) 1.5 m ........................................ 2 pcs
□Strap clip ............................................................ 1 pc
□High-performance zero check filter ...................................... 1 pc
□Tube Joint Set Type M 100 pairs/set .................................... 1 box
□Tube Joint Attachment Tool Type M ..................................... 1 box
□Suction port caps (fitted on the main unit) ............................... 2 pcs
□External output connector cap (fitted on the main unit) ..................... 1 pc
□USB connector cap (fitted on the main unit) ............................... 1 pc
□CD-ROM (Communication Software, USB Driver, Operation Manuals) ....... 1 pc
□USB cable (A-mini B) .................................................. 1 pc
□Soft case ............................................................ 1 pc
□MANUFACTURER’S INSPECTION AND CALIBRATION CERTIFICATE ... 1 copy
□Important safety information .......................................... 1 copy
● If any of the above items is damaged or missing, contact your dealer or us.

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1-3 Limited warranty
Please be aware that measurements provided by this product are just an assessment of respirator fit
during a Fit Test. Respirator fit on other occasions may be different. The fit factor value is not intended
for use in calculating an individual exposure to actual hazardous substances. Therefore, please
understand that we will not be liable for any loss or damage if it is used for purposes other than the said
assessment.

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2 Important safety information
This operation manual contains warnings and cautions intended to ensure the safe and proper use of
this product and prevent any bodily harm or property damage to the user or any other person. These
are all important safety instructions. Before use, carefully read, fully understand, and strictly comply with
these instructions.
2-1 User (Important)
This product should only be operated by persons who have sufficient technical expertise, training, or
experience to understand the possible risks associated with its use. Anyone untrained or under
training is allowed to operate it only under proper supervision of someone with a trained or technical
background.
This operation manual assumes that this product will be operated by someone with a good
understanding of the possible risks associated with its use.
2-2 Graphical symbols
This manual uses two different alert symbols, ‘Warnings’ and ‘Cautions,’ depending on the
consequence or damage that may arise from improper use in disregard thereof. Be sure to follow
these important safety instructions.
Risk/damage levels and corresponding symbols
Indicates information that, if ignored, could result in personal
injury or even death due to incorrect handling.
Indicates information that, if ignored, could result in personal
injury or property damage due to incorrect handling.
•This product is not explosion-proof. Avoid use near combustibles or flammables.
•Do not subject this product to strong impacts or allow it to drop onto a hard surface. Failure to comply
may cause malfunction or accident.
•Do not attempt any disassembly or modification. Failure to comply may cause malfunction or accident.
•This product is intended for indoor use. Use it indoors at an altitude of 2,000 m or less.
•If lightning has struck somewhere nearby, turn off the power and remove the power plug from the
outlet. Failure to comply may cause electric shock or fire.
•If anything unusual occurs during operation, stop operation immediately to eliminate the cause. If this
product is responsible for the anomaly, turn off the power switch and remove the power plug from the
outlet. Then contact your dealer or us. Do not use this product in an abnormal condition. Only service
personnel are allowed to disassemble or repair this product. Failure to comply may cause malfunction
or accident.
•Do not operate this product with it covered or wrapped with a cloth or a blanket. This will cause heat
buildup, which may result in fire or failure.
•Do not expose this product to water or any other liquid. Failure to comply will cause this product to
break down.

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•Strictly adhere to the usage temperature range (5 to 40°C). Failure to comply may cause malfunction
or accident.
•Do not use any AC adapter that was not included with this product.
•Use only with a single-phase 100 to 240 ±10％VAC power supply. Do not plug into a power strip.
Failure to comply may cause electric shock or fire. When required to use a voltage other than the
specified one, contact your dealer or us for consultation.
•Do not operate with a damaged power cable or a loose outlet. Failure to comply may cause fire or
electric shock.
•Do not touch the power cable, the plug, or the outlet with a wet hand. Failure to comply may cause
electric shock.
•Do not use a wire or any other metal to connect the connector on the rear side of the main unit; nor
try any connection method other than one specified herein. Failure to comply may cause fire or
damage to the equipment.
•Do not insert a wire or any other foreign object into the suction ports or the dryer. Failure to comply
may cause malfunction.
•Do not use this product under an atmosphere other than air, such as toxic, acidic, or alkaline gases.
Failure to comply may cause malfunction, explosion, or fire.
•If the equipment is used in a manner not specified by manufacturer, the protection provided by the
equipment may be impaired.
•Do not swing around this product when moving it. Failure to comply may cause malfunction or
personal injury.
•Install and use this product on a flat, stable surface. Failure to comply may cause malfunction,
accident, or erratic operation.
•Avoid installation or storage in a place exposed to strong direct sunlight or near a fire or any other
heat source. Failure to comply may cause erratic operation or malfunction.
•Do not get on top of this product or place any heavy objects on top of it. Failure to comply may cause
deformation and accident or malfunction.
•Do not wash this product with water. Failure to comply may cause electric shock, fire, or malfunction.
•When not in use, remove the power plug from the outlet. Failure to comply may cause fire or
malfunction.
•Before cleaning, remove the power plug from the outlet. Failure to comply may cause fire or
malfunction. Do not clean with alcohol or any organic solvent (thinner, benzene, etc.) other than
ethanol. Failure to comply may result in peeling of the coating.
As the AC adapter is not protected against liquids, do not use ethanol or the like for cleaning.
•Always unplug the power cable holding the plug, not the cable itself. Failure to comply will cause
damage to the cable and may result in electric shock or fire.
•Do not place any heavy objects on the power cable or tread on it. Failure to comply may cause wire
breakage, electric shock, or fire.
•Carefully avoid hitting any part of your body on the suction ports or any other protrusion. This product
is delivered with rounded corners and other safety precautions taken for potentially dangerous parts.
To ensure safety, use with due care. Failure to comply may cause personal injury.

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•Some materials used in this product (including accessories and options) may cause allergic
reactions. If you have any allergies, be sure to check that you are not allergic to any of the
materials (see p.60). Avoid using the product if you are allergic to any of the materials.
•Be careful not to trip over or let your hands be caught by the sampling tube, power cord, or USB cable.
Such accidents might cause a failure or injury.
•Take great care not to stab your hands or fingers with the tip of the Tube Joint Attachment Tool. In
addition, do not direct the tip toward anybody. Doing so may cause injury.
•Do not drop this product. Doing so might cause a failure or injury.
•Depending on the environment, staying in the measurement area for an extended period may make
you feel ill. In such a case, immediately stop the measurement and move away from the
measurement environment until you feel better.
•Use USB cables that come with this product or one that is 3 m or less in length.
2-3 Caution labels
Caution labels are attached to the rear side of the product. Observe the contents of the labels when
using the product.
AVOID SHOCK
Do not subject this product to strong impact or drop it. Doing so
may cause a failure or accidents.
KEEP DRY
Do not touch the power cable, power plug, or power outlet with
wet hands. In addition, do not wash this product with water. Doing
so might cause electric shock or fire.

8
3 About this product
3-1 Overview
This product is a measuring instrument used to check the fit of a dust mask (disposable or
replaceable) in use and can be used for measurements in general rooms.
Each human face differs in shape. There are, however, a wide variety of dust masks (hereinafter
referred to as “masks”) available from various mask manufacturers. Thus, anyone required to wear a
mask can select one that best fits their face. To take full advantage of the performance of a mask, it
must be handled properly and checked for fit to the face.
This product is a measuring instrument used to check the fit of the contact surface of a mask to the
face of the mask user. A gap, depending on its size, will cause the ingress of indoor dust into the
mask. This product can measure the degree of inward leakage. By wearing a mask in such a way as
to minimize the degree of inward leakage, the mask user can take full advantage of the effect of mask
wearing or the so-called inherent performance of the mask.
This product is equipped with a light scattering particle counter as its detector module, which counts
the particles exceeding a predetermined size per unit volume of air sample. This product
automatically takes and changes air samples according to a preset schedule.
The degree of inward leakage, which is Leakage Percentage, can be measured as follows: first, take
a sample of air near the mask to count indoor airborne (ambient) dust particles; then, take an air
sample from within the mask worn by the user to count dust particles in the air sample; and calculate
the ratio of the two counts as the Leakage Percentage. The following procedure is used to quantify
the fit of a mask.
Exhaled breath contains a lot of moisture. At a low room temperature, e.g., during winter, the moisture
and dust particles in the in-mask air sample combine and cause mist formation in the sampling tube(s).
This problem is solved by reheating the air sample up to the exhaled breath temperature using the
heater module provided in the passage leading to the detector.
3-2 Features
Smaller in size and weight than our previous model (MT-03) and equipped standard with a mask-fit-
check mirror.*
In addition to the conventional measurement method, this model is equipped with three new
measurement modes (four modes in total) to expand its measurement capability. This allows
measurement during exercise and its customization.
This model saves measurement data in the main unit and its supplied PC software allows data
transfer to a personal computer and creation of reports. In addition, it also allows the user to perform
measurement via the PC software.
To allow for operational simplicity of functions, a large, easy-to-see color LCD touch panel (pressure-
sensitive type) is adopted for display and operation, while a pushbutton switch dedicated to the
measurement start operation is provided independently.
As for the connection method to the mask, a Tube Joint (push-on ring type) is supplied standard. The
Test Guides (optional accessories) are the mask-fit-check tools for use with a mask actually worn.
The Tube Joint can minimize leakage from the connection points.
* The mirror is made of a material cleanable with ethanol. This makes the reflected image a little dull.
The user is asked to understand that the mirror is designed as such.

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•Particle counter system adopted for detection
•Automatic in-room (ambient) and in-mask air sampling and switching between them
•Capable of determining the degree of inward leakage into the mask based on the comparison
between the in-mask and ambient particle counts
•Built-in re-heater for preventing particulate-laden mist and condensation from occurring due to the
moisture in exhaled breath. Auto-dryer function also available to facilitate the drying of the inside of
the tube as soon as the measurement completes (see p. 49).
•Pump operation function for preventing exhaled breath remaining in the product from flowing
backward (see p. 49).
•Concentration function for measuring the concentration of particles in ambient air (see p. 20).
•Smaller in size and weight and functionally more advanced than our previous model.
•Capable of saving measurement data in the main unit. PC software for report creation.
Also allows measurement via the PC software as well as immediate report creation.
•Color LCD touch panel (pressure-sensitive type) for display and operation. Independent pushbutton
switch dedicated to measurement start.
•Test Guides (optional accessories) and Tube Joint (push-on ring type, standard accessory) available
as the method for connection to the mask.
3-3 Principle of measurement
Particle counting
The principle of counting particles in an air sample is as follows:
When convergent light is applied to particles (dust) floating in air, scattered light will be reflected from
the particles. The intensity of this scattered light correlates with the particle size. The scattered light
intensity may vary depending on physical properties of dust (color, shape, refractive index, etc.), even
if the particle size is the same.
The interactions between particles and light (electromagnetic waves) such as scattering, absorption,
and diffraction are systematically explained by Mie’s theory. Using the scattering phenomenon
supported by this theory, this product performs particle counting.
The principle of detection by the detector of this product is as follows: A particulate-laden air sample
is led into the detection zone inside the detector through the nozzle of the tubing in the detector. This
zone is a cylindrical zone consisting of an air passage pathway and a laser beam pathway disposed
orthogonally thereto. A laser beam is applied to particles passing through this zone. Then during
passage through the zone, the particles irradiated with the laser beam reflect scattered light. This
detection zone has a capacity small enough to let only one particle in at a time even if the air sample
is heavily laden with particles. This scattered light exists only for an instant; only this scattered light is
converged by a lens for detection by a photosensor. This photosensor produces a pulsating
photocurrent, the magnitude of which is proportional to the intensity of the aforementioned scattered
light. This photocurrent is discriminated against a reference value (the current value corresponding
to a reference particle size) by an electronic circuit and counted only when exceeding the reference
value. In this way, the count concentration of particles exceeding the reference particle size per air
sample is determined.

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Quantifying the fit of a mask
The fit of a mask to the face of the mask user is quantified as follows:
If there is a gap wide enough to allow particles to pass through between the mask and the face of the
mask user, ambient particles will leak into the mask during inhalation depending on the gap size. The
degree of fit can be numerically expressed as the ratio of the particle count per unit volume of the in-
room air (ambient air) near the mask to that of the air in the mask.
For this product, this degree of fit is expressed as the Leakage Percentage given by the following
formula:
𝐿𝑃 =
𝐶
𝐶
× 100
𝐿𝑃: Leakage Percentage [%]
𝐶: Ambient (outside) count
𝐶: In-mask (inward) count
The ‘Fit Factor,’ the indicator that shows the relative cleanliness of the in-mask air to the ambient air,
is determined from the Leakage Percentage using the following formula:
𝐹𝐹 =
100
𝐿𝑃
𝐹𝐹: Fit factor
The overall Leakage Percentage (average leakage percentage) is calculated based on the arithmetic-
mean Leakage Percentage of a multiple number of measurements taken.
The overall Fit Factor (mean fit factor) is determined by substituting the arithmetic-mean Leakage
Percentage of individual measurements (overall Leakage Percentage) into the above formula
(harmonic mean of ‘Fit Factors’ of individual measurements):
𝐿𝑃
=
𝐿𝑃
+𝐿𝑃 +𝐿𝑃 +
・・・ +𝐿𝑃

𝑛
𝐹𝐹
=
100
𝐿𝑃

=
100𝑛
𝐿𝑃
+𝐿𝑃 +𝐿𝑃 +
・・・ +𝐿𝑃

=
𝑛
1
𝐹𝐹

+1
𝐹𝐹

+1
𝐹𝐹

+ ・・・ +1
𝐹𝐹

𝑛: Number of measurements
𝐿𝑃
: Overall leakage percentage [%]
𝐹𝐹
: Overall fit factor

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Block diagram
Purging
This product takes into account the time (purge time) required to replace (i.e., purge) the air remaining
in the detector module with the analyte air at the start of measurement and during the transition from
ambient measurement to in-mask measurement.
During measurement, purges occur in the following sequences:
Example 1 Where ambient and in-mask measurements are taken alternately
Ambient purge (1) →ambient measurement (1) →in-mask purge (1) →in-mask
measurement (1) →ambient purge (2) →ambient measurement (2) →in-mask purge
(2) →in-mask measurement (2) →………………… →ambient purge n →ambient
measurement n →in-mask purge n →in-mask measurement n
Example 2 Where ambient measurements are taken at the start and end with in-mask
measurements continually taken in the middle (“Outside sample times” is set to
“Twice in Fit test”)
Ambient purge (1) →ambient measurement (1) →in-mask purge (1) →in-mask
measurement (1) →in-mask measurement (2) →in-mask measurement (3) →… →in-
mask measurement n →ambient purge (2) →ambient measurement (2)
Outside inlet Mask side inlet
Heater Touch panel
Exhaust
RS-232C output
Solenoid
valve
Control circuit USB
Flowmeter
START button
Particle counter
Needle
valve
Pump
Filter

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3-4 Measurement modes
This product features the following four different measurement modes:
Measurement mode Description See
page
Fit Test mode
Perform measurement according to a
preprogrammed procedure (protocol) and
automatically calculate and display the Fit Factor.
Use this mode when selecting masks for
individual persons or when giving practice in
wearing a mask.
This product comes with the JIS, OSHA, and
other protocols preprogrammed. This mode also
allows easy on-screen customization of these
protocols (See p. 42).
25
Daily Check mode
Check this product for normal operation before
starting a Fit Test.
When an attempt is made to start a Fit Test before
the Daily Check, a dialog box appears to guide
the user to the Daily Check mode.
31
Fit Check mode
Perform a single measurement for Leakage
Percentage similarly to our previous model.
When doing a mask fit check before entering a
work site, select this mode for use with the Test
Guides (optional accessories).
33
Training mode
Take a simple real-time measurement of Leakage
Percentage.
Use this mode to do a mask fit check while sliding
the mask. In this mode, the pump runs
continuously. Use this mode to check the pump
flow rate (see p. 20).
The concentration of particles in ambient air is
also measured here (see p. 20).
35
“Mode Select” has been added to the settings of each measurement mode. Select “99+ mode” when
the respirator filter efficiency is 99% or more, and select “95 mode” when it is less than 99%.
Since Fit Test performs measurements in the mode in which Daily Check was performed, Mode Select
setting is not available in the Fit Test Settings. If you wish to change the mode for Fit Test, set Mode
Select in Daily Check Settings, perform Daily Check again, and then perform Fit Test.

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3-5 Precautions
Handling precautions
This product is a measuring instrument equipped with, among other things, a detector module and a
computational module built in. Carefully avoid exposing this product to any impact or vibration when
moving or handling it.
Opening and closing the mirror
When opening or closing the mirror, support the main body with one hand.
Connection to the mask
When the Tube Joint (push-on ring type) is selected for connection to a mask, the mask used for
measurement must not be used at an actual work site. Use the Test Guides (optional accessories) to
check the fit of a mask to be worn at an actual work site (see p. 18).
Handling the Tube Joint Attachment Tool
Take great care not to stab your hands or fingers with the tip of the Tube Joint Attachment Tool. In
addition, do not direct the tip toward anybody. Doing so may cause injury.
Measurement
Before measurement, the subject must have a medical interview or use any other appropriate method
to make sure that s/he does not have any serious existing respiratory and circulatory illnesses.
Before the subject puts on the mask, tell him/her that s/he is allowed to remove the mask whenever
having difficulty breathing. In such a case, the testing personnel must abort the measurement
immediately and help the subject to remove the mask.
Depending on the environment, staying in the measurement area for an extended period may make
you feel ill. In such a case, immediately stop the measurement and move away from the
measurement environment until you feel better.
Handling the sampling tubes
While this product is used over a long time, condensation may build up in its tube and affect
measurement results. If any water droplets are seen in the tube, dry the tube well or replace it with a
dry one before performing measurement.
When using the Test Guides (optional accessories), use the dryer on the side face of the main unit to
dry the tube (see p. 20).
Operating touch panel
The touch panel of this product is a pressure-sensitive type. Lightly touch a point on the screen for
one operation.
Touching more than one point at the same time may cause a malfunction. Carefully avoid pressing
the screen too hard. Failure to comply may cause damage to the touch panel.

14
Face contact
There are some parts, such as the Test Guide (optional), Tube Joint, etc., that touch or may touch
your face.
If you have any allergies, be sure to check that you are not allergic to any of the materials (see p.60).
Avoid using the product if you are allergic to any of the materials.
Laser
This product is a class 1 laser product. The information on the built-in laser is as follows.
Wavelength: 785 nm
Output: 120 mW
Beam divergence angle: 9 × 16° FWHM
Pulse width and frequency: CW
The following label is attached to the rear side of the product.
Using and adjusting the control unit or performing any procedures
other than those specified in this manual may cause exposure to
hazardous radiation.
Pollution degree and overvoltage category
The pollution degree and overvoltage category for this product are as follows.
Pollution Degree 2
Overvoltage Category II

15
3-6 Names of parts and components
“POWER”
switch
Support the main body
with one hand when
opening or closing the
mirror.
Mirror
Color LCD touch panel
(pressure-sensitive type)
Suction ports (with caps)
“MASK”: white
“OUTSIDE”: green
“START”
button
Handle
Dryer
Rotameter
(center)
Flow control valve
Speaker
Power connector
“DC12V”
USB connector
(mini B)
(with cap)
Backup battery
replacement slot External output connector
“RS232C”
(with cap)

16
4 Set-up
4-1 Supplying the power
Make sure that the [POWER] switch is set to OFF. Then connect the DC plug of the AC adapter to
the power connector DC12V on the back of this product. Connect the other plug to the AC outlet.
If anything unusual is found in this product, immediately stop its use, remove the power plug from the
outlet and contact your dealer or us.
● Do not use any AC adapter that was not included with this product.
4-2 Turning ON the power switch
Make sure that the power plug is connected to the AC outlet. Then turn ON the [POWER] switch.
The startup screen (Sibata logo) will be displayed first, followed by the version information screen
(product logo). Touch the center area of the screen or wait for a while until the screen automatically
switches over to the Main Menu screen.
When a calibration due date is set, a dialog box starts to appear one month before the calibration due
date. Contact your dealer before the calibration expires.
Touch [OK] to close the dialog box and return to the Main Menu screen.

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4-3 Main Menu screen
Tou ch [Fit Test], [Daily Check], [Fit Check], or [Training] to perform measurement in the
corresponding mode. Touch [Settings] to make necessary settings.
A calibration due date (if any) will appear on the screen.
PC remote icon
When communication with the PC software starts, this product serial number and the following icon
will appear at the bottom of the screen (subarea), disabling touch panel operation and [START] button
operation. (For the use of the PC software, see the Operation Manual (for PC Software).)
Screen-switching-in-progress icon
When an operation is made, this icon may appear in response.
In this case, this product is busy switching between screens. Avoid making
another operation while this icon is displayed. Failure to comply may cause this
product to malfunction. In the event of an operational anomaly, turn OFF the
[POWER] switch and then turn it back ON. If the problem still persists, this
product may be out of order. Immediately stop its use and contact your dealer or
us.
4-3-1 Version information check
Tou ch [Ver. info.] and the Version Information screen will appear. Touch the center area of the
Version Information screen or wait for a while until the Main Menu screen automatically reappears.

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4-4 Getting ready for measurement
4-4-1 Connecting the sampling tubes
Remove the caps from the suction ports on the front side of the main unit (see p. 15) and connect
the transparent tube to the white-ringed MASK port and the green tube to the green-ringed
OUTSIDE port. (Be careful not to lose the caps.)
4-4-2 Selecting the connection method to the mask
Select the connection method to the mask.
Check the fit of the mask
to be actually worn. => Test Guides
(optional accessories) => See ■
Connecting and wearing
the mask using the Test Guide.
Minimize leakage from
the connection points. => Tube Joint*
(push-on ring type) =>
See ■ Attaching/connecting the
Tube Joint and wearing the
mask (p.19)
* Note that when the Tube Joint (push-on ring type) is selected for connection to a mask, the mask
used for the measurement must not be used at an actual work site.
Connecting and wearing the mask using the Test Guides
(1) Connect the tube connector to the end of each
tube.
(2) Connect a Test Guide to the tube connector.
(3) Insert the transparent tube-side Test Guide
halfway between the face and the mask from
around the cheek.
The mask may be detached from the contact
surface due to the weight of the sampling tube.
Hold this tube with a hand during measurement.
(4) Use a fastener such as the supplied strap clip to
fasten the green tube-side Test Guide to an
appropriate point such as a lapel so that it will be
positioned near to the Test Guide inserted into
the mask.
●
A bend or kink in the latter Test Guide will result in an
inaccurate measurement. Fasten the Guide to an
appropriate point such as a lapel, using the supplied
strap clip with the sampling tube passed through it.
→Proceed to 4-4-3 “Checking and adjusting the flow rate
and checking the concentration of particles in ambient air.”
Test G u ide
Tube connecto
r
Tube
Green tube
Transparent tube

19
Attaching/connecting the Tube Joint and wearing the mask
Carefully avoid stabbing the tip of the Tube Joint Attachment
Tool into the hand or fingers. Do not point the Tool at anyone.
(1) Insert the Tube Joint into the male end of the
supplied Tube Joint Attachment Tool.
(2) Stab the tip of the Tube Joint through the mask
from the backside of its cheek area to the front
side.
(3) Fit the Tube Joint stopper on so that its male
side will face the same direction as the tip of the
Tube Joint.
(4) Engage the female end of the Tube Joint
Attachment Tool into place to push the stopper
into the Tube Joint. Now the Tube Joint has
been attached to the mask.
(5) Connect the transparent tube to the Tube
Joint and put the mask on.
● The mask may be detached from the contact
surface due to the weight of the sampling tube.
Hold this tube with a hand during measurement.
(6) Pass the green tube through the supplied
strap clip and fasten the strap clip to an
appropriate point such as a lapel.
Tube Join
t
Tube Joint
Attachment Tool
(male end)
Stoppe
r
Tube Joint
Attachment Tool
(
female end
)
Transparent tube

20
4-4-3 Checking and adjusting the flow rate and checking the concentration
of particles in ambient air
With everything connected together, from the Tube Joint (or Test Guides when using them) to the
sampling tubes, check and adjust the flow rate (with or without the mask worn on the face).
You can also check the concentration of particles in ambient air.
(1) Touch [Training] on the Main Menu screen to select
the Training mode (see p. 35).
(2) When the heater icon at the bottom right of the screen
turns “OK” and the instrument is ready for
measurement, press the [START] button.
When the measurement starts, the pump will start
continuous operation.
(3) The standard flow rate set for this product is 1 L/min.
Check the rotameter provided on the right side of the
main unit to ensure that the center of the rotameter
float reads 1 L/min.
(4) If the flow rate is inappropriate, adjust it using the flow
control valve.
(5) When completing the flow rate check and adjustment,
touch [End] to terminate the measurement.
(6) Press the [Settings] button to open the setting screen
and set “Concentration” to “ON”. Then press the
[Save] button and [Meas.] button to return to the
measurement screen.
(7) Press the [START] button and check the measured
concentration value.
(8) After checking the concentration of particles in
ambient air, press the [End] button to complete the
measurement.
●
When the flow rate cannot be adjusted to 1 L/min
Check whether the sampling tube or the Test Guide is bent. If the flow rate cannot be
adjusted even after the kink is removed, the instrument may be out of order or the built-in
pump may have reached its service life (see p. 56). Contact your dealer or us for
consultation.
4-4-4 When condensation occurs in the Test Guide(s) or the sampling
tube(s)
While measurement is performed over a long time,
condensation may build up in the Test Guide(s) and the
sampling tube(s). This product is equipped with a built-in
heater in the air passage leading into the detector to
reheat the air sample up to the exhaled breath
temperature. A prolonged moist air condition, however,
will affect measurement results. If any water droplets are
seen in the tube, dry the tube well or replace it with a dry
one before performing measurement.
● When using the Test Guides (optional accessories), use the dryer on the side face of the
main unit.
Rotameter
Flow control valve