Mainstream CMZ60MEMO User manual

Report reference No: KPN-CE-015 Rev: V3.0
Mainstream
EtCO2 SENSOR
CMZ60MEMO
USER’S GUIDE
ENGLISH

Report reference No: KPN-CE-015 Rev: V3.0
Contents
1. Intended use ................................................................................................................................................................ 5
2. Safety............................................................................................................................................................................ 5
2.1 Warnings............................................................................................................................................................ 5
2.2 Cautions............................................................................................................................................................. 7
2.3 Notes .................................................................................................................................................................. 7
2.4 Symbols and Labels......................................................................................................................................... 8
3.1 Overview ............................................................................................................................................................ 9
3.2 Principle of operation...................................................................................................................................... 10
4. Preparations for use.................................................................................................................................................. 10
4.1 Setting up......................................................................................................................................................... 10
4.2 Starting up........................................................................................................................................................ 11
4.3 Shut down........................................................................................................................................................ 12
4.4 Connecting to the MEMO .............................................................................................................................. 12
4.5Adapter Selection.......................................................................................................................................... 12
4.6 Precautions...................................................................................................................................................... 13
5.1 Buttons ............................................................................................................................................................. 13
5.2 Monitoring ........................................................................................................................................................ 13
5.2.1 EtCO2............................................................................................................................................................ 13
5.2.2 Respiratory Rate.......................................................................................................................................... 13
5.2.3 Capnogram................................................................................................................................................... 14
5.2.4 CO2 settings................................................................................................................................................. 14
5.3 Indicators and alarms..................................................................................................................................... 14
5.3.1 Alarm signals................................................................................................................................................ 15
5.3.2 Default limits for alarms.............................................................................................................................. 16
5.3.3 Alarm silence................................................................................................................................................ 16
5.3.4 Battery status indicator............................................................................................................................... 17
5.3.5 Adjusting the alarm limit.............................................................................................................................. 17
6. MEMO and Accessories........................................................................................................................................... 18
7. Maintenance............................................................................................................................................................... 18
7.1 Battery replacement ....................................................................................................................................... 18
7.2 Cleaning........................................................................................................................................................... 19
7.3 Airway adapter .......................................................................................................................................... 19
7.4 Zeroing procedure .......................................................................................................................................... 19
7.5 Gas span check .............................................................................................................................................. 20
7.6 Troubleshooting............................................................................................................................................... 21
8. Specifications............................................................................................................................................................. 21
8.1 General specifications.................................................................................................................................... 21
8.2 Interfering gas and vapor effects.................................................................................................................. 22
8.3 Environmental ................................................................................................................................................. 23
8.4 Classifications ................................................................................................................................................. 23
8.5 Compliance................................................................................................................................................... 23
9 EMC statement........................................................................................................................................................... 24
9.1 Description....................................................................................................................................................... 24
9.2 precautions in use........................................................................................................................................... 24
9.3 Matching accessories..................................................................................................................................... 24
9.4 precautions regarding .................................................................................................................................... 25

Report reference No: KPN-CE-015 Rev: V3.0

Report reference No: KPN-CE-015 Rev: V3.0
0123
Declaration of Conformity
Complies with 93/42/EEC Medical Device Directive when connected to medical devices
approved by Qinhuangdao Kapunuomaite Medical Equipment S&T Co.,Ltd.
Disclaimer
Qinhuangdao Kapunuomaite Medical Equipment S&T Co.,Ltd. shall in no event be liable for
any direct, indirect, special or consequential damages including without limitation damages
for loss of business profits, loss of income, business interruption，loss of business
information, loss of use or other related exposures, however caused, arising from the faulty
or incorrect use of the product.
Liability
Qinhuangdao Kapunuomaite Medical Equipment S&T Co.,Ltd. guarantees that the product
delivered has been thoroughly tested to ensure that it meets its published specifications.
Warranty
Please contact us for details regarding warranty and product returns.
Use of the product for other than its intended use, or if it has been repaired by anyone
except us or a our authorized service center, or altered or modified or used without
following the instructions provided with the product, voids the warranty.
Trademarks
Qinhuangdao Kapunuomaite Medical Equipment S&T Co.,Ltd. owns the licensed
trademark: Capnomed.
Copyright
This document contains proprietary information that is protected by copyright. All rights are
reserved. No part of this document may be photocopied, reproduced or translated to
another language without prior written consent of Qinhuangdao Kapunuomaite Medical
Equipment S&T Co.,Ltd.
Authorized EU Representative
Company name: Shanghai International Holding Corp. GmbH(Europe)
Address: Eiffestrasse 80,20537 Hamburg, Germany
Contact: Jin Liang
Competent Authority:
Behörde fr Gesundheit und Verbraucherschutz, Referat V42
Web site: www.capno-med.com
The information in this document is subject to change without notice.

Report reference No: KPN-CE-015 Rev: V3.0
1. Intended use
CMZ60MEMO is a reference for professionals in respiratory care. It is mainly used in the
following areas:
a) Monitoring the parameters of the patient's exhaled carbon dioxide;
b) Monitoring of carbon dioxide exhalation during sedation, dyspnea, Apnea，respiratory
arrest, asthma and chronic obstructive pulmonary disease in patients requiring ventilator
support;
c) Monitor carbon dioxide exhalation before and after patient intubation.
This product is not intended to be used as the only method for monitoring patients. It should
always be used with other vital signs monitoring equipment and at the same time (or in
combination with professional judgment) to determine the condition of the patient.
The ETCO2 sensor is used in combination with a monitor and a ventilator to monitor the
patient's real-time CO2 waveform, ETCO2 value, FiCO2 value and breathing frequency.
ETCO2 sensors are designed to be used only by trained and authorized medical
professionals.
2. Safety
2.1 Warnings
Indicates a potentially harmful condition that can lead to personal injury.
WARNING! MEMO should only be used for the purpose and in the manner described in
this manual.
WARNING! MEMO is intended for use by authorized health care professionals only.
WARNING! MEMO must not be used with flammable anesthetic agents. Use of the
MEMO in such environment may present an explosion hazard.
WARNING! Use only the airway adapter manufactured by manufacturer.
WARNING! No modification of the MEMO probe or the MEMO airway adapters is allowed.
WARNING! MEMO airway adapters shall not be reused. Reuse of single use adapters can
cause cross infection. Used airway adapters shall be disposed of in accordance with local
regulations for medical waste.
WARNING! Do not use the MEMO adult/pediatric airway adapter with infants as the
adapter adds 6 ml dead space to the patient circuit.
WARNING! Do not use the MEMO infant airway adapter with adults as this may cause
excessive flow resistance.
WARNING! Measurements can be affected by mobile phones and RF communications
equipment. It should be assured that MEMO is used in the specified electromagnetic
environment.

Report reference No: KPN-CE-015 Rev: V3.0
WARNING! MEMO is intended only as an adjunct in patient assessment. It shall be used
in conjunction with the assessment of clinical signs and symptoms.
WARNING! If MEMO is used with a respirator or with harmful gases such as N2O, always
perform a pre-use tightness check of the patient circuit.
WARNING! Light transmission can be affected by secretions and moisture pooling on the
MEMO airway adapter windows. When using heated humidifiers special care should be
paid to position the airway adapter in a vertical position and to change airway adapter if
necessary.
WARNING! Do not use MEMO with nebulized medications as this may affect the light
transmission of the MEMO airway adapter windows.
WARNING! Do not operate the MEMO when it is wet or has exterior condensation.
WARNING! Audible alarm of any monitor may not be heard in some loud environments,
such as when sirens are in use and the care provider is more distant from the alarm
source. Alarm volume should be tested with the extremes of your noise environment to
confirm ability or limitations to hear an alarm in all circumstances of the environment.
WARNING! Replace batteries immediately when the Battery Status Indicator starts
blinking. Remaining battery time depends on battery type and other circumstances and
cannot be reliably predicted.
WARNING! Lithium batteries may present a fire or chemical burn hazard if mistreated. Do
not disassemble, heat above 100°C or incinerate. Dispose of used cell promptly. Keep
away from children.
WARNING! Use only alkaline batteries or energizer ultimate lithium L92 batteries. Use of
other Lithium batteries may present a risk of fire or explosion.
WARNING! DO NOT use it for patients who cannot tolerate an increased airway dead
space or who cannot tolerate a 50 ml/min ±10 ml airflow from the airway.
Warning!Don’t near active HF SURGICAL EQUIPMENT and the RF shielded room of an
ME SYSTEM for magnetic resonance imaging, where the intensity of EM
DISTURBANCES is high.
Warning!Use of this equipment adjacent to or stacked with other equipment should be
avoided because it could result in improper operation. If such use is necessary, this
equipment and the other equipment should be observed to verify that they are operating
normally.
Warning!Use of accessories, transducers and cables other than those specified or
provided by the manufacturer of this equipment could result in increased electromagnetic
emissions or decreased electromagnetic immunity of this equipment and result in improper
operation.”

Report reference No: KPN-CE-015 Rev: V3.0
Warning!Portable RF communications equipment (including peripherals such as antenna
cables and external antennas) should be used no closer than 30 cm (12 inches) to any
part of the model CMZ60MEMO, including cables specified by the manufacturer.
Otherwise, degradation of the performance of this equipment could result.
2.2 Cautions
Indicates a condition that may lead to equipment damage or malfunction.
CAUTION! Use only approved accessories.
CAUTION! If MEMO is used in a manner other than that for which it was intended,
unpredictable behavior could result.
CAUTION! The MEMO airway adapters are non-sterile devices. Do not autoclave the
devices as this will damage them.
CAUTION! Never sterilize or immerse MEMO in liquid.
CAUTION! Do not operate MEMO at ambient temperatures less than 0°C or greater than
40°C.
CAUTION! Do not store the MEMO at temperatures less than -20°C or greater than 70°C .
CAUTION! Do not clean the MEMO and accessories except as directed in this guide.
CAUTION! Federal law restricts this device to sale by or on the order of a physician.
CAUTION! Remove batteries if MEMO is not likely to be used for a period of time longer
than 90 days.
CAUTION! The signal port on MEMO host is only used as maintenance and upgrade by
manufacturer's authorized maintenance personnel. Non- manufacturer authorized
maintenance personnel must not use this signal port.
CAUTION! Maintenance personnel should use the IEC60950-1 Standard compliant
computer with a Windows 7 operating system and a USB 2.0 port for maintenance and
upgrades of MEMO. Maintenance personnel should use a dedicated data cable to connect
the MEMO host and computer for repair and upgrade operations.
2.3 Notes
A point of particular interest or emphasis intended to provide more effective or
convenient.
NOTE! Throughout this User’s Manual: MEMO airway adapter refers to both airway
adapter adult/pediatric and airway adapter Infant if not otherwise mentioned.
NOTE! A trained medical professional must determine the proper MEMO airway
adapter model for each patient application. No hardware or software configuration
6

Report reference No: KPN-CE-015 Rev: V3.0
changes result from the MEMO airway adapter model selected.
NOTE! The MEMO contains no user serviceable parts. Refer service to qualified service
personnel.
NOTE! This product and its accessories are latex free.
NOTE! After the life cycle of the MEMO and its accessories have been met, disposal
should be accomplished following national and/or local requirements.
NOTE! The alarm limits will be reset to default values after power off.
NOTE! Always carry spare batteries in the MEMO pouch.
NOTE! The presence of ambient air (0% CO2) in the MEMO airway adapter is of crucial
importance for a successful zeroing. Special care should be taken to avoid breathing
near the MEMO airway adapter before or during the zeroing procedure.
Note!The EMISSIONS characteristics of this equipment make it suitable for use in
industrial areas and hospitals (CISPR 11 class A). If it is used in a residential
environment (for which CISPR 11 class B is normally required) this equipment might not
offer adequate protection to radio-frequency communication services. The user might
need to take mitigation measures, such as relocating or re-orienting the equipment.
2.4 Symbols and Labels
Symbol
Title
Date of manufacture
Use-by date.
Manufacturer.
Serial number
Batch code
Catalog number
Authorized representative in the European Community.
Follow instruction for use
Caution (U.S.): Federal law restricts this device to sale
by or on the order of a licensed healthcare practitioner.
Do not re-use.
For EU only:Waste Electrical and Electronic Equipment
(WEEE)
Non sterilization.
Symbol for temperature
limitation/temperature range.

Report reference No: KPN-CE-015 Rev: V3.0
Symbol for humidity
limitation/humidity range.
Symbol for atmospheric pressure
limitation/ atmospheric pressure range.
CE certification mark.
For the complete list of symbols see technical specification.
Label
Title
Packing box main
label.
Packing box sub
label.
3. Device description
3.1 Overview
The MEMO is a mainstream carbon dioxide sensor comprised of a sensor body that fits on
top of a disposable airway adapter.

Report reference No: KPN-CE-015 Rev: V3.0
3.2 Principle of operation
The MEMO measures the concentration of CO2in the breathing gas based on the NDIR
technology. Different gases absorb infrared light of a specific wavelength.
The stationary infrared light source emits a beam of invisible infrared light through the
airway adapter, and the respiratory airflow flows in the airway adapter. As the beam passes
through the airway adapter, some light is absorbed by the gas mixture. The absorbed beam
reaches the infrared detector fixed at the other end. The infrared detector is equipped with
two filters of different wavelengths, one of which has very strong absorption of carbon
dioxide, and the other wavelength of carbon dioxide has no absorption.
The infrared detector converts the beam into an electrical signal, which is converted to a
digital value and sent to the microprocessor. The microprocessor then calculates the
carbon dioxide concentration in the breathing gas mixture using the ratio of the light of the
two measurement channels.
4. Preparations for use
4.1 Setting up
Unpack and inspect the MEMO for external damage. Please contact your local distributor in
case of damage.
1. Push the battery cover release button to the position，then push down the battery
cover and remove the battery cover.
2. Open the battery compartment and insert two (2) AAAbatteries. Make sure the batteries
are fitted according to the indicated polarity.
Figure 2
Releasing the battery cover
Figure 1 MEMO Index
Figure 3
Installing the batteries
9

Report reference No: KPN-CE-015 Rev: V3.0
3. After battery installation, put the battery cover back into place, and then push the battery
cover release button to the position.
4.2 Starting up
1. Press the airway adapter into the MEMO. It will click into place when properly seated.
2. Press the power button.
3. When the MEMO is ready the EtCO2 value indicates “0” and the respiratory rate value
indicates “— —“.
The audible alarm sound may be checked by detaching the MEMO airway adapter to
generate a “No Adapter” alarm.
If the EtCO2value is non-zero, ensure that there has not been an accumulation of CO2
between the sensor body and the MEMO airway adapter by removing and reattaching the
MEMO airway adapter. If the EtCO2value still displays a non-zero value after this
procedure, perform a zeroing procedure as described in chapter 7.4 prior to using the
MEMO with a patient.
Figure 4
Installing the battery cover
Figure 5
Connect with airway adapter
Figure 6
Power on the MEMO
Figure 7
Normal interface
11
0

Report reference No: KPN-CE-015 Rev: V3.0
4.3 Shut down
When the screen not shows the menu interface, long press the power button for more than
3 seconds, the MEMO will shut down.
The MEMO switches off automatically during following conditions:
●After 2 minutes if no breath is detected.
●After 2 minutes if no breath condition is detected and the alarm silence is activated.
●After 60 seconds if the airway adapter is removed.
4.4 Connecting to the MEMO
CMZ60MEMO is connected to other vital signs monitoring equipment by the respiratory line
and respiratory mask. See figure as following:
●The cord of the sensor should be facing away from the patient.
●For optimal results, do not place the adapter between the ET tube and the elbow.
4.5Adapter Selection
The matching disposable consumables (adapter) provided by our company are as
follows:
Item number
Patient situation
CSM01A
Primary adapter
Warning: The adapter is a single-use consumable and cannot be reused or disinfected,
which will reduce the performance of the system;
After use, the airway adapter should be disposed of in accordance with local
medical waste regulations 。

Report reference No: KPN-CE-015 Rev: V3.0
4.6 Precautions
⚫any degradation in MEASUREMENT ACCURACY of the end‐tidal GAS READING as
a function of respiratory rate and I:E ratio (inspiratory/expiratory time ratio) over their
RATED ranges;
⚫known adverse effects on stated performance due to the following:
—quantitative effects of gas sample humidity or condensate;
—leaks or internal venting of sampled gas;
—cyclical pressure of up to 10 kPa (100 cmH2O);
—other sources of interference;
5. User interface
5.1 Buttons
MEMO has three multi-function buttons with different functions in different display
interfaces:
Screen
display
Alarm mute button
Menu button
Power button
Monitoring
Mute/Clear mute
Enter menu
Long press more than 2s, power off
Menu
Up/ Plus
confirm
Down/ Minus
5.2 Monitoring
The MEMO is equipped with a 128*128 pixel graphic TFT display that shows the end-tidal
carbon dioxide value, respiratory rate value, and the capnogram.
5.2.1 EtCO2
The unit of end-tidal carbon dioxide (EtCO2) defaults to millimeters of mercury (mmHg) and
can be set to kPa or volume percent (%) by menu. The EtCO2value is shown after one
breath and the averaged value is updated every breath.
The display range is as follows:
CO2 Unit
mmHg
kPa
%
Value Range
0-99 mmHg
0-9.9 kPa
0-9.9 %
Monitoring shows
5.2.2 Respiratory Rate
Respiratory Rate (RR) is displayed as breaths per minute (3-150 bpm). RR is displayed
13
0
14
0

Report reference No: KPN-CE-015 Rev: V3.0
after three breaths and the value is updated every breath.
5.2.3 Capnogram
The horizontal scanning speed and the scale of the capnogram can be set via the menu.
The default values are as follows:
●Default scan speed: 2mm/s
●Default display scale: 0-50mmHg
5.2.4 CO2 settings
The CO2 display unit, CO2 waveform scale and scan speed can be set on the setup menu.
1. Enter the main menu: Press the "menu button" in the monitoring interface to enter the
menu.
2. Enter the setup menu: Press the alarm mute button (▲) or the power button (▼) to
select the setup menu, press the menu button to enter setup menu.
3. Select the setting item: press the alarm mute button (▲) or the power button (▼) to
select items.
4. Enter editing mode: press menu button to enter editing mode.
5. Adjust the setting value: press the alarm mute button (▲) or the power button (▼) to
adjust the values.
6. Exit the edit mode: press the menu button to exit the edit mode.
5.3 Indicators and alarms
The CMZ60MEMO is equipped with an alarm status indicator.
The operator should look squarely at the CO2 monitor display. Operate and observe from a
distance of 0.3m to 2m.
The audible alarm sound may be checked by detaching the CapnoEasy Airway Adapter to
generate a “No Adapter” alarm when setup the device.
Parameters
Options
Default
CO2 Unit
mmHg / kPa / %
mmHg
CO2 Scale
mmHg
50 / 60 / 75
50
kPa
6.7 / 8.0 / 10.0
6.7
%
6.6 / 7.9 / 9.9
6.6
Waveform Speed
4mm/s / 2mm/s / 1mm/s
2mm/s

Report reference No: KPN-CE-015 Rev: V3.0
5.3.1 Alarm signals
When an alarm is triggered, an alarm status indicator in the lower right corner of the display
is lit with a steady or blinking yellow light depending on alarm priority, together with an
audible alarm beep according to the following table(the beep sound is only used to alert the
operator Observe the information on the display screen in time, and it is not used to judge
the alarm level only by beeps):
delay inherent in the determination of anALARM CONDITION less than 1 second;
Active alarms are further displayed according to the following table：
Alarm
Screen
EtCO2 Value
RR Value
Apnea
value steady
"——" flashing
EtCO2 Low
value flashing
value steady
EtCO2 High
value flashing
value steady
RR Low
value steady
value flashing
RR High
value steady
value flashing
No Adapter
N/A
N/A
Alarm Priority
Indicator
Audible
Alarm
Low
Yellow,
Steady
Two beep tones，
repeated every 20s
Zero point adjustment
No Adapter
Clogged Adapter
Battery Low
System Fault
Medium
Yellow,
Blinking
0.5Hz
Two beep tones，
repeated every 15s
ETCO2 Low
ETCO2 High
RR Low
RR High
Apnea

Report reference No: KPN-CE-015 Rev: V3.0
Clogged Adapter
N/A
N/A
Battery Low
Depend on other alarm signal
Zero point
adjustment
Depend on other alarm signal
5.3.2 Default limits for alarms
The default factory settings for the Apnea and the Low/High EtCO2 and RR alarms are as
follows:
Lower Limit
Upper Limit
Apnea
20s
-
EtCO2
25mmHg
50mmHg
RR
5bpm
30bpm
5.3.3 Alarm silence
By pressing the mute button, the audio alarm can be muted for 2 minutes.
When the alarm is muted, the yellow alarm mute indicator is located in
the upper right corner of the display, i.e. the alarm status silence
indicator will light.
Pressing the alarm mute button again during 2 minutes of silence will
reactivate the audible alarm.
If a No Breath alarm is muted by pressing the Alarm Silence button, the
MEMO will automatically switch off after 2 minutes provided that no new
breaths are detected.
If the alarm signal disappears when the audible alarm is muted, the
alarm icon will turn green. Pressing the alarm mute button during no
alarm will also show a green mute alarm indicator in the upper right corner of the display.

Report reference No: KPN-CE-015 Rev: V3.0
5.3.4 Battery status indicator
There is a battery status indicator in the upper right corner of the screen. The display status
of the indicator changes according to the battery power:
⚫When the battery is normal, the battery status indicator lights up with a steady green
light.
⚫However, when the power is close to the minimum working voltage required, a low
battery alarm is generated and no reading is displayed;
⚫The device automatically shuts down when the battery level is lower than the normal
operating voltage;
5.3.5 Adjusting the alarm limit
1. Enter the main menu: press the menu button in the monitoring interface to enter the
menu.
2. Enter the alarm setting menu: Press the alarm mute button (▲) or the power button (▼)
to select the Alarm menu, and then press the menu button to enter the selected menu.
3. Select the alarm setting item: Press the alarm mute button (▲) or the power button (▼)
to select.
4. Enter editing mode: press menu button to enter editing mode.
5. Adjust the alarm limit: Press the alarm mute button (▲) to increase or the power button
(▼) to decrease the limit value.
6. Exit the edit mode: press the menu button to exit the edit mode.
The adjustment ranges for the EtCO2 and RR alarm limits are as follows:
Alarm Item
Lower Range
Upper Range
EtCO2 displayed in mmHg
0-99mmHg
1-99mmHg
EtCO2 displayed in kPa
0-9.9kPa
0.1-9.9kPa
EtCO2 displayed in %
0-13%
0.1-13%
RR
3-150bpm
3-150bpm
Battery Normal
Battery Low

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NOTE: After restart, the alarm limit is reset to the default value.
5.3.6 Notes on alarms
1.How to verify value alarms:
Set the alarm limit to the small residual measurement value to verify the high alarm of the
measurement value;
Set the alarm limit to greater than the measured value to verify the low alarm of the
measured value.
2.When there is no key operation, the device will automatically return to the monitoring
interface from the non-monitoring interface after 15s.
3.delay inherent in the determination of anALARM CONDITION less than 1 second;
6. MEMO and Accessories
Below is a list of device models, versions and approved accessories. For an up to date list
of accessories visit:
Catalog Number(REF.NO.)
Product
Description
CMZ60MEMO
Mainstream EtCO2 Sensor
MEMO
CSM01A
Airway Adapter
Needed in order for MEMO to provide
readings
7. Maintenance
7.1 Battery replacement
To replace the batteries:
1. Push the battery cover release button to the position，Then push down the
battery cover and remove the battery cover.
2. Gently remove the depleted batteries. And then Insert two new AAA type batteries into
the battery compartment. Make sure that the batteries are fitted according to the polarity
marking.
3. When the batteries are properly fitted, gently snap the battery cover back into place, and
then push the release button to .
WARNING: Replace batteries immediately when the battery status Indicator starts blinking.
Remaining battery time depends on battery type and other circumstances and
cannot be reliably predicted.
Lithium batteries may present a fire or chemical burn hazard if mistreated. Do
not disassemble, heat above 100 ℃ or incinerate. Dispose of used cell
promptly. Keep away from children.

Report reference No: KPN-CE-015 Rev: V3.0
Use only alkaline batteries or energizer ultimate lithium L92 batteries. Use of
other lithium batteries may present a risk of fire or explosion.
NOTE: Always carry spare batteries with MEMO.
7.2 Cleaning
1. Remove the batteries before cleaning.
2. The MEMO can be cleaned using a cloth moistened with 70% alcohol.
3. Clean the MEMO with a clean damp cloth after each use and dry naturally.
CAUTION: Do not immerse MEMO in any liquid.
7.3Airway adapter
1.The MEMO airway adapters are intended for single patient use. They are disposable and
shall not be re-used. Reuse of single patient use adapters can cause cross infection.
2.The MEMO airway adapters shall be disposed of in accordance with local regulations for
bio-hazardous waste.
3.The MEMO is only used with the airway adapters of Part 6”MEMO and Accessories” in
this manual.
7.4 Zeroing procedure
Zeroing is recommended after replaced airway adapter or whenever an offset in gas
readings is discovered. Zeroing of the MEMO is performed by the following procedure:
NOTE: The presence of ambient air (0% CO2) in the MEMO airway adapter is of crucial
importance for a successful zeroing. Special care should be taken to avoid breathing near
the MEMO airway adapter before or during the zeroing procedure.
1. Start the MEMO by pressing the power button.
2. Make sure that a new airway adapter is properly installed.
3. Press the menu button to enter the menu interface.
4. Press the alarm mute button (▲) or the power button (▼) to select the zero menu. When
the zero countdown shows "0", the zero operation is completed.
5. Press the menu button to start zeroing. When "Zeroing" and countdown digits are
displayed on the screen, it means that zero is being executed. If zeroing fails, "Zero
failed!" will be displayed on the screen.
6. When the zero countdown shows "0", the zero operation is completed.
Zero not started

Report reference No: KPN-CE-015 Rev: V3.0
MEMO will automatically return to normal measurement mode after zero completion.
7.5 Gas span check
The MEMO does not require any routine calibration. A gas span check is recommended at
regular intervals to make sure the measurement is within accuracy levels. The suggested
interval for gas span check is once every year.
To perform a gas span check of MEMO you will need:
1. A gas flow regulator with a plastic tube and a 15M connector.
2. Calibration gas (5% CO2,Balance N2).
3. Two airway adapters.
The process is as follows:
1. Connect the flow regulator to the calibration cylinder. Ensure that the valve is completely
closed.
2. Install a new airway adapter to the MEMO.
3. Turn on the MEMO and make sure the EtCO2 reading is zero. Otherwise conduct a
zeroing procedure according to Chapter 7.4 above before proceeding.
4. Insert the 15M connector into one end of the airway adapter, and connect a second
airway adapter to the other end of the first airway adapter (see Figure 10).
5. Turn on the regulator flow.
6. After 30 seconds, record the EtCO2 reading.
7. Turn off the flow.
8. Determine and record the estimated ambient atmospheric pressure in mmHg.
9. Use the following table to determine if the device is reading within the specified limits.
Barometric Pressure
(mmHg)
MEMO EtCO2 readings should be between
%
mmHg
kPa
660-679
4.7-5.3
31-36
4.1-4.8
680-699
4.7-5.3
32-37
4.3-4.9
700-719
4.7-5.3
33-38
4.4-5.1
720-739
4.7-5.3
34-39
4.5-5.2
740-759
4.7-5.3
35-40
4.6-5.4
760-779
4.7-5.3
36-41
4.8-5.5
780-799
4.7-5.3
37-42
4.9-5.6
Figure 10
Gas span check connection