Certifier™ Pro Flow Analyzer

Model 4090

Quick Start Guide

P/N 6016201, Revision D, December 2024

Certifier™ Pro Instrument Components

Certifier™ Pro Test Kit (Model 4090)

Material Description	Replacement Part
Power supply 100/240 VAC to +12 VDC 2.1 mm, includes plug set with NA, UK, EU, CN, SAA	130400
Inlet filter, high flow, 22 mm M/F, HEPA	1602341
Inlet filter, low flow, 3/8 inch barb, HEPA	130380
Adapter, high pressure port	1611221
Adapter, 22 mm to 6 mm (for interfacing the Low Flow Filter to the High Flow channel)	1102091
Adapter, 15 mm ID to 22 mm OD	1102093
Adapter, 22 mm F to 22 mm F, Straight	130373
Adapter, 15 mm M to 22 mm F, Pediatric Cuff	130374
Airway pressure fitting with screen	1611330
Pressure tubing, silicone, 1/8 inch ID x 1/4 inch OD x 48 inch	3002053
Oxygen Sensor (installed)	130377
Battery, Lithium-Ion 7.2 V 6.4 AHr (installed)	130385
Hanging Clip (to hang 4090 from a ventilator rail)	130375

For more information, Download Operator's Manual at TSI.com

Certifier™ Pro Accessories

Description	Part Number	Image Description
Carrying Case, Fitted (19 x 14.75 x 6.5 inch / 48 x 37.5 x 16.5 cm)	130378	A fitted carrying case with handle and latches.
Test Lung, Adult, 1 L	130393	A blue, bellows-like device labeled 'B&B'.
Test Lung, Pediatric, 0.5 L	130396	A blue, bellows-like device labeled 'B&B' with adapters.
Computer Cable, USB-C to USB-A, with Screw Lock	130382	A USB-C to USB-A cable with a screw lock mechanism.
Stylus, Capacitive Touch	130370	A slender stylus for touchscreen interaction.
Flow Resistor Kit, Calibrated Resistors (Rp5, Rp20, Rp50)	130395	Three cylindrical resistors labeled Rp5, Rp20, and Rp50.

Instrument Overviews

4090 Instrument, Front

The front panel features several ports and a touchscreen display:

1. Low Flow Channel Inlet
2. High Flow Channel Inlet
3. High Pressure Port (Max: 150 psi / 10 bar)
4. Low Differential Pressure, Positive Port (+)
5. Low Differential Pressure, Negative Port (-)
6. Touchscreen Display

4090 Instrument, Back

The back panel includes various connection ports:

1. Low Flow Channel Outlet
2. High Flow Channel Outlet
3. Power Button (On/Off) ?
4. RS-232 Output
5. TTL Trigger Input
6. DC Power Input
7. USB-C Communications Output
8. Screw hole for USB-C cable lock
9. USB-A Connectors (2)
10. Portable / Rack Switch
11. Cable Retainer
12. Model / Serial Number Sticker

4090 Instrument, Bottom

The bottom panel has access covers and feet:

1. Battery/Oxygen Sensor Cover
2. Cover Knob
3. Instrument Handle
4. Rubber Feet
5. Fan
6. Cable Retainer

Available Measurement Parameters

Symbol	Description	Symbol	Description
V	Flow rate	P_PLAT	Plateau pressure
V_PEAK	Peak flow rate	P_HIGH	High pressure (4081 only)
V_MIN	Minimum flow rate	P_ABS	Absolute pressure, equals barometric pressure if flow tube open to atmosphere.
V_Δ	Flow rate delta	O₂	Oxygen concentration (4081 with 4073 only)
V_Δ%	Flow rate delta percent	T	Temperature
V_TI	Inhaled tidal volume	f	Breath frequency
V_TE	Exhaled tidal volume	t_I	Inspiratory time
V	Real-time volume	t_IP	Inspiratory pause time
MV	Inhaled minute tidal volume	t_I+P	Inspiratory time including pause time
P	Low pressure measurement (4081 only)	t_R	Inspiratory rise time
PIP	Peak inspiratory pressure (4081 only)	t_E	Expiratory time
P_EEP	Peak end expiratory pressure (4081 only)	I:E	Inspiratory to Expiratory ratio
P_MAP	Mean airway pressure (4081 only)	I:E_IP	Inspiratory to Expiratory ratio including pause time
P_MIN	Minimum low pressure (4081 only)	C_STAT	Static compliance
P_Δ	Delta low pressure (4081 only)	?	Time of day
LR	Leak rate

Measurement Parameter Definitions

Refer to the Certifier™ Pro User Manual for more detailed definitions of the measurement parameters.

Flow Rate (V) Waveform: The graph displays a typical breathing cycle. Key parameters identified include:

V_PEAK: Peak flow rate
V_Δ: Flow rate delta
V_Δ%: Flow rate delta percent
V_MIN: Minimum flow rate
t_I: Inspiratory time
t_E: Expiratory time
t_IP: Inspiratory pause time
t_I+P: Inspiratory time including pause time
Formulas are shown for I:E ratio (t_E/t_I), I:EIP ratio (t_E/(t_I+t_P)), breath frequency (f = 1/(t_I+P + t_E)), and minute volume (MV = V_TI * f).

Pressure (P) Waveform: This graph illustrates pressure changes during a breath cycle. Key parameters identified include:

PIP: Peak inspiratory pressure
PEEP: Peak end expiratory pressure
P_MIN: Minimum low pressure

Pre-Test Checks and Instrument Setup

Power and Warmup

The Certifier™ Pro Flow Analyzer operates via AC power or battery. The battery recharges automatically when AC power is connected. Allow one minute upon startup for the flow sensor and pressure transducers to warm up.

Instrument Calibration

Verify the calibration date for the Certifier™ Pro Flow Analyzer is current. TSI® recommends annual calibration for accurate flow, pressure, and temperature measurements.

Zero Low / High Pressure

Disconnect any pressure tubing from the front ports to expose the sensors to ambient air. Access the Zero Pressure Sensors screen via the zero icon on the Certifier Pro display and perform the zeroing procedure.

Oxygen Sensor Calibration

Calibrate the oxygen sensor daily, after an altitude change, or upon replacement. Navigate to Settings > Oxygen Sensor and follow on-screen instructions for calibration with air or oxygen.

Connect Inlet Filter

Connect the filter to the breathing circuit upstream of the Certifier Flow Analyzer. TSI® provides inlet filters for both high and low flow channels and recommends their use at all times during operation.

Connect Low Pressure Measurement

Attach the airway pressure fitting (1) to the breathing circuit. Connect one end of a length of silicon tubing (2) to the barb on the airway pressure fitting and the other end to the (+) low pressure port on the front of the instrument.

Test Circuit for Bi-directional Flow

The diagram illustrates a typical test circuit setup:

A Ventilator is connected to an Inspiratory Filter.
The filter connects to the Certifier™ Pro Flow Analyzer (Model 4090).
An Airway Pressure Fitting (with screen) is attached to the breathing circuit. A short silicone tubing connects this fitting to the (+) Low Pressure Port on the analyzer.
The analyzer's output connects to a Test Lung (Adult 1 L or Pediatric 0.5 L).
An Expiratory path is also shown.
A note indicates to minimize the length between the airway fitting and the test lung.

Touchscreen Operation

The Certifier™ Pro instrument features a 5-inch capacitive touchscreen display. The interface is designed for finger operation; press lightly for optimal responsiveness. A capacitive-touch stylus can be used as an alternative.

Interact with the Certifier™ Pro Flow Analyzer by touching any on-screen element. Up to 18 measurement parameters can be displayed simultaneously, with automatic adjustment of font size and positioning based on the number of selected measurements.

Parameter Screen

The Parameter Screen displays various measurements. Key elements include:

1. Menu
2. Module Cards
3. Module Indicators
4. Battery Indicator ?
5. Measurement and Units
6. Triggers / Averaging Settings
7. User Configurations
8. Parameter/Graph Screen Toggle ?
9. Zero Pressure Sensors
10. Save Data and/or Snapshots ?
11. Pause/Play Display ▶️ / ⏸️
12. Edit Measurements and/or Units ✏️
13. Warnings & Errors Notifications ❗

Graph Screen

The Graph Screen displays real-time waveforms. Key elements include:

1. Plotted Measurements
2. Y-Axis (primary and secondary)
3. X-Axis
4. Breath Trigger Indicators
5. Real-Time Measurements
6. Edit Graph ✏️

Breath Triggers

Triggers detect the start of inspiratory and expiratory breath cycles. They can be based on flow rate, pressure, or a TTL voltage signal. The Certifier™ Pro Flow Analyzer can automatically detect breaths using the flow rate, or you can manually set start and end trigger values. Using the Auto Trigger setting is recommended in most circumstances.

Breath Averaging

The number of breaths specifies the maximum number of breaths for averaging parameter measurements. The averaging time sets the rate at which real-time values are averaged and updated. Real-time values include flow rate, low pressure, high pressure, absolute pressure, oxygen concentration, and temperature.

Certifier™ Flow Analyzer Configurations

A configuration is a saved collection of settings (measurements, units, gas type, triggering, graphing). Any setup can be saved as a configuration for later recall, useful for testing various equipment or optimizing test setups.

Data Acquisition and Export

Configurations are stored internally and can be exported to a USB mass storage drive via USB-A ports. Exported configurations can be sent as email attachments or imported onto other Certifier™ Pro or Certifier™ Plus instruments.

The Certifier Pro Flow Analyzer logs measurement data and captures screenshots. Data can be saved from the Parameter or Graph screen to internal memory.

Snapshots: Save a screenshot image and the displayed data.
Continuous Logging: Captures data for selected measurements at sample rates from 1 sec to 10 mins, with test lengths from 15 secs to 5 days.
Waveform Logging: Records raw sensor data at 1000 Hz for 15 to 60 seconds.

Saved screenshots (.png) and data log files (.csv) can be exported via the USB-A ports. The data export; pipe, semicolon, or tab) can be set in the General Settings menu.

Contact Information and Trademarks

TSI and the TSI logo are registered trademarks of TSI Incorporated in the United States and may be protected under other country's trademark registrations.

TSI Incorporated – Visit www.tsi.com for more information.

USA: Tel: +1 800 680 1220
UK: Tel: +44 149 4 459200
France: Tel: +33 1 41 19 21 99
Germany: Tel: +49 241 523030
India: Tel: +91 80 67877200
China: Tel: +86 10 8219 7688
Singapore: Tel: +65 6595 6388

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