TSI Instruments Certifier Plus User manual

www.tsi.com
CertifierPlus
Flow Analyzer
Test System
Models 4089, 4081, 4082
User Manual
P/N 6016477, Revision E
May 2023

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iii
Warranty
Copyright
TSI Incorporated / 2022 / All rights reserved.
Address
TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 USA
WARNING
TSI®Certifier Flow Analyzers employ a heated platinum sensor. They SHOULD NOT
be used with flammable or explosive gases or mixtures.
TSI®4081 and 4082 Flow Modules are not designed for use with anesthesia gas other
than nitrous oxide. Only the anesthesia gas measurement accessory is designed for
use with anesthetic gases.
C A U T I O N
TSI®Certifier Flow Analyzers are not medical devices under FDA 510k and in no
situation should they be utilized for human respiration measurements.
A T T E N T I O N
As indicated by the WEEE Symbol on the case of the Interface Module and the cases
of the flow modules, this product should not be discarded as unsorted waste but must
be sent to separate collection facilities for recovery and recycling.
Limitation of Warranty and Liability (effective May 2023)
(For country-specific terms and conditions outside of the USA, please visit www.tsi.com.)
Seller warrants the goods, excluding software, sold hereunder, under normal use and service as described in the operator's
manual, to be free from defects in workmanship and material for 24 months from the date of shipment to the customer on
shipments that occur on or after May 15, 2023. A warranty period of 12 months applies to all instruments shipped prior to
May 15, 2023 This warranty period is inclusive of any statutory warranty. This limited warranty is subject to the following
exclusions and exceptions:
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. Pumps are warranted for hours of operation as set forth in product or 
c. 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;
d. 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;
e. This warranty does not cover calibration requirements, and seller warrants only that the instrument or product is properly
calibrated at the time of its manufacture. Instruments returned for calibration are not covered by this warranty;
f. This warranty is VOID if the instrument is opened by anyone other than a factory authorized service center with the one
exception where requirements set forth in the manual allow an operator to replace consumables or perform recommended
cleaning;
g. This warranty is VOID if the product has been misused, neglected, subjected to accidental or intentional damage, or is not
properly installed, maintained, or cleaned according to the requirements of the manual. 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. WITH RESPECT TO
SELLER’S BREACH OF THE IMPLIED WARRANTY AGAINST INFRINGEMENT, SAID WARRANTY IS LIMITED TO CLAIMS
OF DIRECT INFRINGEMENT AND EXCLUDES CLAIMS OF CONTRIBUTORY OR INDUCED INFRINGEMENTS. BUYER’S
EXCLUSIVE REMEDY SHALL BE THE RETURN OF THE PURCHASE PRICE DISCOUNTED FOR REASONABLE WEAR AND
TEAR OR AT SELLER’S OPTION REPLACEMENT OF THE GOODS WITH NON-INFRINGING GOODS.

iv 
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 THE CASE OF SOFTWARE, SELLER WILL REPAIR OR REPLACE DEFECTIVE
SOFTWARE OR IF UNABLE TO DO SO, WILL REFUND THE PURCHASE PRICE OF THE SOFTWARE. IN NO EVENT
SHALL SELLER BE LIABLE FOR LOST PROFITS, BUSINESS INTERRUPTION, OR ANY SPECIAL, INDIRECT,
CONSEQUENTIAL OR INCIDENTAL DAMAGES. SELLER SHALL NOT BE RESPONSIBLE FOR INSTALLATION,
DISMANTLING OR REINSTALLATION COSTS OR CHARGES. No Action, regardless of form, may be brought against Seller
more than 12 months after a cause of action has accrued. The goods returned under warranty to Seller's factory shall be at
Buyer's risk of loss, and will be returned, if at all, at Seller's risk of loss.
Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY AND LIABILITY, which contains the complete
and exclusive limited warranty of Seller. This LIMITATION OF WARRANTY AND LIABILITY may not be amended, modified or its
terms waived, except by writing signed by an Officer of Seller.
Service Policy
Knowing that inoperative or defective instruments are as detrimental to TSI 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) 680-
1220 (USA) or (001 651) 490-2860 (International) or visit www.tsi.com.
Trademarks
TSI and TSI logo are registered trademarks of TSI Incorporated 
trademark registrations. Certifier and FLO-Sight are trademarks of TSI Incorporated.
REDEL is a registered trademark of Interlemo Holding S.A. Luer-Lok is a registered trademark of Becton Dickinson. Velcro is a
registered trademark of Velcro IP Holdings LLC. Phillips is a trademark of Phillips Screw Company.

v
Contents
Warranty............................................................................................................................................................iii
Contents.............................................................................................................................................................v
CHAPTER 1 Introduction and Parts Identification ................................................................................... 1-1
Introduction...........................................................................................................................................1-1
Interface Module................................................................................................................................1-1
High Flow Module..............................................................................................................................1-1
Low Flow Module...............................................................................................................................1-1
Oxygen Sensor..................................................................................................................................1-1
List of Standard Components ...............................................................................................................1-2
CertifierPlus High Flow Test System, Standard Kit (Model 4080-S).............................................1-2
CertifierPlus High Flow Test System, Full Kit (Model 4080-F)......................................................1-3
List of Accessory Kits............................................................................................................................1-4
CertifierPlus Low Flow Module Kit (Model 4082)..........................................................................1-4
CertifierOxygen Sensor Kit (Model 4073).....................................................................................1-4
Mounting Kit, for CertifierPlus Interface Module (PN 130398)......................................................1-4
Mounting Kit, for CertifierPlus Interface and Flow Module (PN 130399)......................................1-5
CertifierConnector Kit (PN 130391)..............................................................................................1-5
Flow Resistor Kit (PN 130395) ..........................................................................................................1-5
Other Optional Accessories..................................................................................................................1-6
CHAPTER 2 Flow Analyzer Overview ........................................................................................................ 2-1
Instrument Overview.............................................................................................................................2-1
4089 Interface Module, Back.............................................................................................................2-1
4089 Interface Module, Front.............................................................................................................2-1
4081 High Flow Module, Back...........................................................................................................2-2
4081 High Flow Module, Front...........................................................................................................2-2
4082 Low Flow Module......................................................................................................................2-2
Operation Overview..............................................................................................................................2-3
Flow Modules.....................................................................................................................................2-3
End Caps...........................................................................................................................................2-3
Lithium Ion Batteries..........................................................................................................................2-3
Supplying Power................................................................................................................................2-3
Power Button LED States..................................................................................................................2-3
Touchscreen Display.........................................................................................................................2-4
User Configurations...........................................................................................................................2-4
Data Acquisition and Export ..............................................................................................................2-4
USB Communications........................................................................................................................2-4
Measurements and Units......................................................................................................................2-5
Available Measurement Parameters .................................................................................................2-5
Available Units of Measurement........................................................................................................2-6
Measurement Parameter Definitions.................................................................................................2-7
CHAPTER 3 Flow Analyzer Setup .............................................................................................................. 3-1
Getting Started......................................................................................................................................3-1
Power On/Off.....................................................................................................................................3-1
Initialization and Warm-Up.................................................................................................................3-1
Instrument Setup...................................................................................................................................3-1
Connect/Disconnect Flow Modules ...................................................................................................3-1
Connect Inlet Filter.............................................................................................................................3-1
Connect the Low Pressure Measurement.........................................................................................3-2

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Connect the Oxygen Sensor..............................................................................................................3-2
Breath Triggers ..................................................................................................................................3-2
Connect the CertifierPlus High Flow Module to a Ventilator............................................................3-3
Connecting the Low Flow Module.........................................................................................................3-5
Pre-Test Checks ...................................................................................................................................3-5
Low Flow Module...............................................................................................................................3-5
High Flow Module ..............................................................................................................................3-5
Flow Module Self-Check....................................................................................................................3-6
CHAPTER 4 Touchscreen Operation .........................................................................................................4-1
Display Interface Overview ...................................................................................................................4-1
Parameter Screen..............................................................................................................................4-1
Warnings and Errors..........................................................................................................................4-2
Graph Screen.....................................................................................................................................4-3
Module Cards.....................................................................................................................................4-4
Menu Screen......................................................................................................................................4-5
Configuring the Analyzer.......................................................................................................................4-5
Measurements and Units...................................................................................................................4-5
Gas Type and Gas Condition.............................................................................................................4-7
Breath Triggers ..................................................................................................................................4-8
Averaging.........................................................................................................................................4-10
Using Configurations...........................................................................................................................4-10
Managing Configurations.................................................................................................................4-11
Loading Configurations....................................................................................................................4-12
Saving Configurations......................................................................................................................4-12
Exporting Configurations..................................................................................................................4-13
Importing Configurations..................................................................................................................4-14
Editing the Graph Screen....................................................................................................................4-14
Plotted Measurements.....................................................................................................................4-15
Y-Axis Scaling..................................................................................................................................4-16
X-Axis Scaling..................................................................................................................................4-16
Trigger Timing..................................................................................................................................4-17
Real-Time Measurements................................................................................................................4-17
Zeroing and Calibration.......................................................................................................................4-18
Zero Pressure Sensors....................................................................................................................4-18
Calibrate Oxygen Sensor.................................................................................................................4-19
Data Logging and Export ....................................................................................................................4-20
Data Acquisition...............................................................................................................................4-20
Managing Data.................................................................................................................................4-23
Exporting Data .................................................................................................................................4-25
Viewing Exported Data ....................................................................................................................4-26
Device Settings...................................................................................................................................4-27
General Settings ..............................................................................................................................4-27
Date/Time.........................................................................................................................................4-27
Display/Power Management............................................................................................................4-27
Triggers and Averaging....................................................................................................................4-28
Oxygen Sensor ................................................................................................................................4-28
Device Information..............................................................................................................................4-28
Update Firmware..............................................................................................................................4-28
CHAPTER 5 Troubleshooting......................................................................................................................5-1

Contents vii
CHAPTER 6 Maintenance ............................................................................................................................ 6-1
Recharging the Battery.........................................................................................................................6-1
Replacing the Battery............................................................................................................................6-1
Replacing the Oxygen Sensor..............................................................................................................6-2
Cleaning the Flow Analyzer..................................................................................................................6-2
Factory Calibration (recommended annually).......................................................................................6-3
Return Procedure..................................................................................................................................6-3
CHAPTER 7 Specifications.......................................................................................................................... 7-1
Physical.................................................................................................................................................7-1
Environmental.......................................................................................................................................7-1
Power....................................................................................................................................................7-1
Compliance...........................................................................................................................................7-1
Measurements......................................................................................................................................7-2
APPENDIX A Data Export Formats ............................................................................................................A-1
Snapshot Data File from the Parameter Screen...................................................................................A-1
Snapshot Data File from the Graph Screen..........................................................................................A-1
Continuous Log file (Initiated from the Parameter Screen or Graph Screen).......................................A-2
Waveform Log file (Initiated from the Parameter Screen or Graph Screen) ........................................A-3

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1-1
CHAPTER 1
Introduction and
Parts Identification
I n t r o d u c t i o n
The  Plus Gas Flow Analyzer Test System is a portable, multi-functional pneumatic tester
designed specifically for the medical industry. Specific measurements for ventilator testing are
programmed and include flows, volumes, pressures, oxygen concentration, and breath timing. The
 Plus Flow Analyzer is designed for use in hospital, field service, home care, manufacturing,
research, and laboratory settings.
The  Plus Test System components include:
Interface Module
The interface module connects to and powers the high flow and low flow modules. The model 4089
Interface Module works with existing 4081 High Flow and 4082 Low Flow Modules. The coiled cable
used to connect the flow and interface modules has been updated to a REDEL®-style connector for
the 4089 side while the flow module end retains the same 4-pin min-DIN connector. The display on the
interface module is used to control the Certifier Plus system and display measurement readings.
High Flow Module
Measures air, oxygen (O2), nitrogen (N2) and carbon dioxide (CO2) flow rate over a range of 0 to
300 standard liters per minute (0 to 40 standard L/min for CO2). A 150 psi (10 Bar) gauge transducer,
a barometric pressure transducer, and a 150 cm H2O differential pressure transducer are also in the
high flow module. A High Flow Module (model 4081) along with an Interface Module (model 4089)
make up the model 4080 Certifier Plus System.
Low Flow Module
Measures air, O2, N2, CO2 and nitrous oxide (N2O) flow rate over a range of 0.01 to 20 standard L/min
with greater accuracy than the high flow module at low flow rates. The Low Flow Module kit (model
4082) is an optional accessory for the 4080 Certifier Plus System. For testing anesthesia workstations,
a 4082 Low Flow Module can be purchased and used in conjunction with a 4089 Interface Module to
measure N2O gas flows.
Oxygen Sensor
Connected to the high flow module, the oxygen sensor enables the measurement of oxygen
concentration as well as air and oxygen mixtures. The Oxygen Sensor kit (model 4073) is an optional
accessory for the 4080-S Certifier Plus system standard kit, but it is included as part of the model
4080-F system full kit.
C A U T I O N
•To avoid inaccurate test readings, DO NOT obstruct the tubing or inlet or outlet
ports, and always use clean, dry gas.
•To avoid damage to the  Plus test system components, always use an
inlet filter upstream of the flow modules, and always cap flow module ports when
not in use.
•The  Plus test system is not a medical device under the Medical
Device Directive or FDA 510(k) and in no situation should be used for
human measurements.

1-2 
L i s t o f S t a n d a r d C o m p o n e n t s
Carefully unpack the test system components from the shipping container. Check the individual parts
against the packing list and notify TSI®immediately if any parts are missing or damaged.
CertifierPlus High Flow Test System, Standard Kit (Model 4080-S)
Item
Number
Description
Replacement
Part Number
Qty.
1
Interface Modulea
4089
1
2
High Flow Moduleb
4081
1
3
Inlet Filter, HEPA, 22 mm x 22 mm M/F (for use with 4081
High Flow Module)
1602341
1
4
Adapter, high pressure port
1611221
1
5
Adapter, 22 mm x 6 mm (to connect 4081 to Low Flow Filter)
1102091
2
6
Adapter, 15 mm ID x 22 mm OD
1102093
1
7
Airway pressure fitting with screen
1611330
1
8
Pressure tubing, silicone, 1/8-inch ID x 1/4-inch OD x 48 in.
3002053
1
9
Velcro®strap for use on High Flow Module
2913110
1
10
Flow module cable, REDEL®straight plug to 4-pin mini-DIN
130384
1
11
Hybrid carrying case (13.8 x 9.5 x 8.1 inch, 35 x 24 x 20.5 cm)
130389
1
12
Power supply 100/240 VAC to +12 VDC 2.1 mm plug, includes
plug set with NA, UK, EU, CN, SAA connectors
130400
1
13
Battery, 4 cell Lithium-Ion 7.2 V 6.4 AHr (pre-installed)
130385
1
14
Protective cover,  Plus Interface Module
130392
1
aIf ordering a 4089 Interface Module Kit for replacement, items 10 through 14 are included.
bIf ordering a 4081 High Flow Module Kit for replacement, items 3 through 9 are included.

Introduction and Parts Identification 1-3
CertifierPlus High Flow Test System, Full Kit (Model 4080-F)
Item
Number
Description
Replacement
Part Number
Qty.
1
Interface Modulea
4089
1
2
High Flow Moduleb
4081
1
3
Inlet Filter, HEPA, 22 mm x 22 mm M/F (for use with 4081)
1602341
1
4
Adapter, high pressure port
1611221
1
5
Adapter, 22 mm x 6 mm (to connect 4081 to Low Flow Filter)
1102091
2
6
Adapter, 15 mm ID x 22 mm OD
1102093
1
7
Airway pressure fitting with screen
1611330
1
8
Pressure tubing, silicone, 1/8-inch ID x 1/4-inch OD x 48 in.
3002053
1
9
Velcro®strap for use on High Flow Module
2913110
1
10
Flow module cable, REDEL®straight plug to 4 pin mini-DIN
130384
1
12
Power supply 100/240 VAC to +12 VDC 2.1 mm plug,
includes plug set with NA, UK, EU, CN, SAA connectors
130400
1
13
Battery, 4 cell Lithium-Ion 7.2 V 6.4 AHr (pre-installed)
130385
1
14

130392
1
20
Certifier Oxygen Sensor Kit
4073
1
24
RAM Mounting Kit for Interface + Flow Module
130399
1
29
Adapter, 22 mm F to 22 mm F, straight
130373
1
30
Adapter, 15 mm M to 22 mm F, pediatric cuff
130374
1
31
Deluxe carrying case, fitted (19 x 14.75 x 6.5 inches)
130393
1
32
Test Lung, adult, 1.0L
130396
1
33
Stylus, capacitive touch
130370
1
aIf ordering a 4089-F Interface Module Kit for replacement, items 1, 10, 12-14, 20, 24, and 29-33 are included.
bIf ordering a 4081 High Flow Module Kit for replacement, items 2 through 9 are included.

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L i s t o f A c c e s s o r y K i t s
CertifierPlus Low Flow Module Kit (Model 4082)
Item
Description
Part Number
Qty.
16
Low Flow Module
4082
1
17
Inlet Filter, HEPA, 3/8 to 1/2-inch barb, plus
3/8-inch tubing
1602342
1
18
Coupling, 3/8-inch tube
1601180
1
19
Adapter, 3/8-inch tube to 3/8-inch barb
1601179
1
CertifierOxygen Sensor Kit (Model 4073)
Item
Description
Part Number
Qty.
21
Oxygen Sensor Cell
2917019
1
22
Oxygen Sensor Coupling
1313118
1
23
Oxygen Sensor Cable
1303741
1
Mounting Kit, for CertifierPlus Interface Module (PN 130398)
Item
Description
Part Number
Quantity
25
Adapter Plate for Interface Module, sheet metal
227098
1
26
RAM Double Socket Arm
130371
1
27
RAM Tough-Claw Small Clamp Base with Ball
130372
1

Introduction and Parts Identification 1-5
Mounting Kit, for CertifierPlus Interface and Flow Module (PN 130399)
Item
Description
Part Number
Quantity
26
RAM Double Socket Arm
130371
1
27
RAM Tough-Claw Small Clamp Base with Ball
130372
1
28
Adapter Plate for Interface + Flow Module, sheet metal
(Attach either a 4081 high flow or 4082 low flow module)
227099
1
CertifierConnector Kit (PN 130391)
Item
Description
Part Number
Quantity
5
Adapter, 22 mm x 6 mm (to connect the 4081 to Low
Flow Filter)
1102091
2
6
Adapter, 15 mm ID x 22 mm OD
1102093
1
7
Airway pressure fitting with screen
1611330
1
29
Adapter, 2 2mm F to 22 mm F, Straight
130373
1
30
Adapter, 15 mm M to 22 mm F, Pediatric Cuff
130374
1
Flow Resistor Kit (PN 130395)
Flow resistors are calibrated airway adapters used to simulate
nominal levels of resistance. Resistors can be used to
demonstrate or test changes in airway resistance. The Flow
Resistor Kit adapters can be cleaned and sterilized.
The kit includes three resistors:
Rp5, Rp20 and Rp50.

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O t h e r O p t i o n a l A c c e s s o r i e s
Description
Part Number
Image
Deluxe Carrying Case, Fitted for the
CertifierPlus Flow Analyzer
(19 x 14.75 x 6.5 inches
48 x 37.5 x 16.5 cm)
130393
Test Lung, Adult, 1.0L, includes
elbow connector
(15 mm ID x 22 mm OD)
130396
Test Lung, Pediatric, 0.5L, includes one
elbow connector and two straight
connectors with Luer-Lok®ports and locks,
connectors include a variable leak
adjustment to demonstrate patient-trigger
function or to simulate an airway leak.
130397
Computer Cable, RS-232, USB-A to 9-Pin
D-sub (6 ft), includes null modem adapter
130379
Computer Cable, USBC to USBA, screw
lock (2m), screwdriver
130382
Fitting, Push to Connect, 3/8 to 5/16 inch
(for use with 4082 Low Flow Module)
130394

2-1
CHAPTER 2
Flow Analyzer Overview
I n s t r u m e n t O v e r v i e w
4089 Interface Module, Back
4089 Interface Module, Front
1.
Flow Module Connector (A)
7.
Screw hole for USB-C cable lock
2.
Flow Module Connector (B)
8.
Tilt Stand
3.
DC Power Input (2.1 mm barrel jack)
9.
Cable Retainer
4.
Power Button (On/Off)
10.
Mounting holes (2), threaded M4
5.
USB-A Connectors (2)
11.
Touchscreen Display
6.
USB-C Communications Output
12.
Protective Cover

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4081 High Flow Module, Back
4081 High Flow Module, Front
1.
Interface Module Connector
4.
Mounting Holes (threaded #8-32)
2.
O2Sensor Input
5.
Low Pressure Ports (± 150 cmH2O)

3.
TTL Trigger Input
6.
High Pressure Port (150 PSIG, 10 bar)
4082 Low Flow Module
NOTICE
The Model 4080-F test kit is designed to include everything needed to test the pneumatics of
mechanical ventilators. To expand to other applications, such as testing anesthesia workstations,
the model 4082 Low Flow Module kit can be added.
1.
Interface Module Connector
2.
Mounting Holes (threaded #6-32)

Flow Analyzer Overview 2-3
O p e r a t i o n O v e r v i e w
Flow Modules
You can connect or disconnect  Flow Modules from the  Interface Module at any
time during normal operation without having to reboot the instrument or change settings. Flow
modules can be connected to either of the flow module ports (A or B) on the interface module. Two
flow modules can be connected and operated through the interface module at the same time, by
connecting two of the same Flow Modules (ex. 4081 and 4081) or two different Flow Modules
(ex. 4081 and 4082).
End Caps
TSI®Flow Analyzers measure flow utilizing an exposed thermal flow sensor that is highly sensitive to
foreign matter and particles within the gas flow. TSI®supplies end caps for both the high flow module
and low flow module and recommends that flow module ends be capped when not in use.
C A U T I O N
To avoid damage to the  Plus Test System components, always cap the ends
of the Flow Modules when not in use.
Lithium Ion Batteries
The model 4089 Certifier Plus Interface Module utilizes a 4-cell lithium ion battery pack which can
provide up to 8 hours of continuous operation from a full charge. The battery pack is calibrated and
installed into the 4089 Interface Module at the factory. The battery pack is rechargeable and can be
charged internally by providing power to the Certifier Interface Module via the AC power adapter. The
Certifier Plus batteries cannot be charged externally from the instrument.
Supplying Power
The Certifier Plus Interface Module provides power to any Certifier Plus Flow Modules when
connected via the coiled cable connector. The interface module can be powered by internal Lithium-
Ion batteries or an AC power adapter can be used. Refer to Chapter 7 of this manual for the Certifier
Plus power supply specifications.
If the AC adapter is delivering power to the Certifier Interface Module with the battery is installed, the
battery symbol on the display will contain a lightning bolt to indicate that the battery is being charged. If
the AC adapter is powering the instrument but no battery is installed, a question mark symbol will
appear within the battery symbol.
NOTICE
When running the Certifier Plus test system on battery power without an AC connection, the
device will shut down automatically if the battery charge reaches 5% in order to prevent battery
damage from occurring.
Power Button LED States
The power button contains an LED that changes state and color depending on the condition of the
Certifier Plus instrument. If the CertifierPlus test system is running with the battery installed while
connected to power via the power cable, then the power button will display the following LED states:
•Blinking red: 010% battery charge
•Solid red: 1020% battery charge
•Solid green: > 20% battery charge

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If the CertifierPlus test system is turned off with the battery installed while connected to power via
the power cable, then the power button will display the following LED states:
•Solid yellow: Battery is charging
•Blinking yellow: Battery is full, no charging needed
If no battery is installed and the CertifierPlus test system is connected to power via the power cable,
the power button will display a solid green LED when the instrument is powered on. The power button
will not display any LED status if the Certifier is turned off and no power is connected.
Touchscreen Display
The Certifier Plus Interface Module utilizes a 5-inch color, capacitive touchscreen display. The Certifier
graphical user interface (GUI) is designed to be operated using your fingers; however, a capacitive-
touch stylus can also be used as an alternative. Press with your fingers lightly on the display for
optimal touchscreen operation.
To operate the Certifier Plus test system, touch any on-screen element that you would like to
change. Between 1 and 18 measurement parameters can be displayed on screen at one time,
and the display will automatically adjust the font and positioning of the text based on the number
measurements selected. The display brightness can be adjusted in the Settings option of the
Certifier Plus user interface.
User Configurations
A user configuration is a collection of setting values for the measurements, units, gas type and
conditions, triggering, and graph settings that can be saved and recalled at a later time. This allows
you to save and load different test setups for specific models of equipment or to ensure test setups
conform with organizational standards or personal preference.
Up to 20 different user configurations can be stored in the internal memory of the 4089 Certifier Plus
Interface Module and can be exported from either USB-A port on the 4089 to a USB mass storage
device. Exported user configurations can then be imported onto other model 4089 Certifier Plus or
model 4090 Certifier Pro instruments. Exported configurations can also be sent as email attachments.
Data Acquisition and Export
The  Plus Flow Analyzer is capable of logging measurement data and capturing
screenshots. Files are saved to the internal memory of the  Flow Analyzer and can be
exported through either of its two USB-A ports. Saved measurement data is exported as .csv files and
screenshots are exported as .png files.
The  Plus Flow Analyzer offers the following data acquisition options:
•Snapshot saves a screenshot image and the data currently displayed, either from the Parameter
screen or Graph screen. Upon executing a snapshot, the Certifier Flow Analyzer will create two
files, an image file (.PNG) for the screen capture and a data file (.CSV) with a single data point.
•Continuous Log captures data for the measurements currently selected on screen. The
sampling rate at which data is collected can be set from 1 second to 10 minutes. The collection
time can be set from 15 seconds to up to five days (120 hours) of continuous logging.
•Waveform Log records raw sensor data at high resolution for flow rate, low pressure, high
pressure, absolute pressure, temperature, and oxygen concentration (if connected). The sampling
rate for waveform logging is fixed at 1 ms (1000 Hz), and you can specify the collection time from
15 to 60 seconds.
USB Communications
Saved measurement data, screen captures, and user configurations are stored on the internal memory
of the model 4089 Certifier Plus Interface Module. You can export saved data and configurations via
USB flash drive from either of the two USB-A ports located on the top of the interface module.

Flow Analyzer Overview 2-5
M e a s u r e m e n t s a n d U n i t s
Available Measurement Parameters
The list parameters available for selection is dependent on the model of the connected flow module.
Symbol
Description
Symbol
Description



Flow rate
PPLAT
Plateau pressure pressure at
the end of the inspiratory phase
during no flow (4081 only)


PEAK
Peak flow rate Peak inhaled
flow rate
PHIGH
High pressure measurement
(4081 only)


MIN
Minimum flow rate the negative
of the peak exhaled flow rate in a
bi-directional test circuit.
PABS
Absolute pressure in flow tube.
Equals barometric pressure if
flow tube is open to atmosphere.



Flow rate delta the numerical
difference in flow rates.
O2
Oxygen concentration
measurement (4081 with
4073 only)


%
Flow rate delta percent the
difference in flow rates by %.
T
Flow tube temperature
measurement.
VTI
Inhaled tidal volume
f
Breath frequency
VTE
Exhaled tidal volume
tI
Inspiratory time
V
Real-time volume
tIP
Inspiratory pause time
MV
Inhaled minute tidal volume
tI+P
Inspiratory time including
pause time
P
Low pressure measurement
(4081 only)
tR
Inspiratory rise time amount of
time from the start of breath to
the max flow rate
PIP
Peak inspiratory pressure
(4081 only)
tE
Expiratory time
PEEP
Peak end expiratory pressure
(4081 only)
I:E
Inspiratory to Expiratory ratio
PMAP
Mean airway pressure
(4081 only)
I:EIP
Inspiratory to Expiratory ratio
including pause time
PMIN
Minimum low pressure
(4081 only)
CSTAT
Static compliance calculated
as Tidal volume / (plateau
pressure PEEP)
P
Delta low pressure Delta
airway pressure (4081 only)

Time of day
LR
Leak rate calculated as change
in low pressure over the set
Average Time

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Available Units of Measurement
Measurement
Factory Default Units
Optional User-Selectable Units


, 

PEAK, 

MIN
L/min
mL/min, mL/s
VTI,VTE,V, MV
L
mL, L
P, PIP, PEEP,PMAP, PMIN,
P,PPLAT
cmH2O
kPa, Pa, hPa, mbar, mmHg,
inH2O, PSI
PHIGH
PSI
kPa, bar
PABS
kPa
cmH2O, Pa, hPa, mbar, bar,
mmHg, PSI, inH2O
LR
cmH2O/s
kPa/s, Pa/s, hPa/s, mbar/s,
mmHg/s, PSI/s, inH2O/s
CSTAT
mL/cmH2O
L/H2O, mL/mbar, L/mbar
O2
% oxygen
-
T
oC
oF
f
1/min
Hz
tI,tIP,tI+P,tE,tR
s
