Teledyne MX300 User Manual
Portable Oxygen Monitor
OPERATING & SERVICE INSTRUCTIONS FOR
MX300
PORTABLE OXYGEN MONITOR
P/N M75387
TYPE B EQUIPMENT: Equipment providing a particular degree
of protection against electric shock,
particularly regarding—
• Allowable LEAKAGE CURRENT
• Reliability of the protective earth
connection (if present).
ECO 03-0166
REV 0
Teledyne Analytical Instruments i
MX300
Copyright © 2003 Teledyne Analytical Instruments
All Rights Reserved
No part of this manual may be reproduced, transmitted, transcribed, stored in a
retrieval system, or translated into any other language or computer language in whole
or in part, in any form or by any means, whether it be electronic, mechanical, optical,
manual, or otherwise, without prior written consent of Teledyne Instruments,
Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91749-1580
FCC Statement
This equipment generates and uses radio frequency energy, and if not installed and
used in strict accordance with the manufacturer's instruction manual, may cause
interference to radio and TV communications. It has been type-tested and certified to
comply with the limits for a Class A, and exceeds limits for a Class B, computing
device pursuant to Subpart J of FCC Rules, which are designed to provide reasonable
protection against such interference when installed in a commercial and residential
environment. Operation of this equipment in a residential area may cause interference,
in which case the user, at his own expense, will be required to take whatever measures
may be required to correct the interference.
Note: The above statement is required by the FCC for any device
that incorporates microprocessors.
Warranty
Teledyne warrants that the goods are free from defects of material and of construction
for a period of 2 years from the date of shipment from Teledyne. The Class R-17MED
Micro-Fuel Cell is warranted for two years from the date of shipment from Teledyne.
The liability of Teledyne if any, shall be limited solely to the replacement and repair of
the goods and shall not include shipping costs or other incidental damages as defined in
Section 2-715 of the U.S. Uniform Commercial Code.
This warranty is null and void if any goods are subjected to misuse, negligence,
accident, or repairs other than those performed by Teledyne or an authorized service
center.
CAUTION: FEDERAL LAW RESTRICTS THIS DEVICE TO SALE
BY OR ON THE ORDER OF A PHYSICIAN.
Teledyne Analytical Instruments ii
Portable Oxygen Monitor
About This Manual
The MX300 Operator's Manual provides both introductory and
detailed information for configuring and operating these instruments.
The manual takes you from the time you unpack the instrument until you
complete the first gas analysis. The bulk of the manual contains
operating procedures and information. There are also cautions,
warnings, and guidelines to ensure that your monitor operates normally
and to its full potential. A troubleshooting section is available to assist
you with common problems and a complete product specifications and
spare parts list is included as an appendix.
• Chapter 1: An introduction to the monitor and its
components, features and applications.
• Chapter 2: Step-by-step set-up procedures and
information.
• Chapter 3: A guide for daily operational maintenance
and troubleshooting.
• Appendix: Specifications and available spare part
options for the monitor, and detailed application
considerations to aid in troubleshooting, etc.
How To Use This Manual
This manual is designed to walk you through the initial set-up of
the MX300 Portable Oxygen Monitor. After you have used it to initially
install your monitor, it becomes a quick reference guide to help you with
specific questions or operating problems.
Before you turning on the instrument, you are advised to read the
safety information on the next few pages and the information found in
Chapters 1 and 2. These chapters acquaint the user with the instruments
use and operation before placing it into operation.
Teledyne Analytical Instruments iii
MX300
Safety Messages
Your safety and the safety of others are very important. Please
carefully read the following safety messages.
Safety message are indented to alert the user of potential hazards.
Each safety message is associated with a safety alert symbol. These
symbols are found in the manual and on the instrument. The definition
of these symbols is described below:
CAUTION: Refer to the instructions for details on the
specific danger. These caution symbols warn of specific
procedures, which if not followed could cause bodily Injury,
and/or damage the instrument.
WARNING: This symbol is use to alert the operator of a
condition that could cause bodily harm.
NOTE: Additional information and comments regarding a
specific component or procedure are highlighted in the form
of a note.
CAUTION: THE MONITOR SHOULD ONLY BE USED FOR THE
PURPOSE AND IN THE MANNER DESCRIBED IN
THIS MANUAL.
IF YOU USE THE ANALYZER IN A MANNER OTHER
THAN THAT FOR WHICH IT WAS INTENDED,
UNPREDICTABLE BEHAVIOR COULD RESULT
POSSIBLY ACCOMPANIED WITH HAZARDOUS
CONSEQUENCES.
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Portable Oxygen Monitor
Table of Contents
Safety Messages ..........................................................................iv
List of Figures..............................................................................vii
List of Tables..............................................................................viii
Introduction ...................................................................................9
1.1 Applicable Standards 10
1.2 Features 11
1.3 Options 11
1.4 Applications 12
1.5 Theory of Operation 12
1.5.1 Sensor 13
1.5.2 Signal Processing 13
Operation .....................................................................................15
2.1 Setup 15
2.1.1 Sensor Installation or Replacement 16
2.1.2 Mounting 18
2.1.2.1 V-Mount Adapter Installation 18
2.1.2.2 Universal Mounting Clamp Installation 18
2.1.3 Battery Installation 19
2.1.3 Calibration 20
2.1.4 Alarms 22
2.1.5 Output 0-1 VDC or RS232 23
2.2 Use 25
2.2.1 Procedure 25
2.3 Gas Sampling 26
Teledyne Analytical Instruments v
MX300
2.3.1 Humidity 26
2.3.2 Temperature 27
2.3.3 Pressure 27
2.3.4 Discrepancy in Readings 28
2.3.5 Anesthetic Gases 28
2.3.5.1 Gases That Induce Reading Error 28
2.3.5.2 Care After Use in Nitrous Oxide 29
2.3.6 Cleaning 30
2.4 Do’s and Don’ts 31
Service Manual ............................................................................35
3.1 General Service Information 35
3.2 Overall Maintenance 35
3.3 Battery Maintenance 35
3.4 Sensor Maintenance 36
3.5 Calibration 36
3.6 Alarms 37
3.7 Gas Sampling 37
3.7.1 Humidity 37
3.7.2 Temperature 37
3.7.3 Pressure 38
3.7.4 Discrepancy in Readings 38
3.8 Troubleshooting 39
3.9 Watchdog 42
3.10 Other Problems with the Instrument 43
3.11 Return Authorization for Service 44
Appendix......................................................................................45
A.1 Specifications 45
A.2 Spare Parts List 46
A.3 Optional Accessories 46
Index.............................................................................................49
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Portable Oxygen Monitor
List of Figures
Figure 1-1: MX300 Front View......................................................... 9
Figure 2-1: Installing the R17MED Sensor .................................... 16
Figure 2-2: Sensor Cable Connection to Monitor .........................17
Figure 2-3: Mounting the Sensor in the Tee Adapter..................... 17
Figure 2-4: V-Mount Adapter Installation....................................... 18
Figure 2-5: Brass Insert for Universal Mounting Clamp................. 18
Figure 2-6: Installing Batteries....................................................... 19
Figure 2-9: 0-1 VDC or RS 232 Digital Output Port ....................... 24
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MX300
List of Tables
Table 2-1: Oxygen Reading Error in a Mixture of Anesthetic Gas . 29
Table 3-1 Troubleshooting............................................................. 39
Table 3-2 Error Codes................................................................... 42
Teledyne Analytical Instruments viii
Portable Oxygen Monitor Introduction
Introduction
Teledyne Analytical Instruments MX300 Oxygen Monitor with
alarms here after referred to as MX300 is a portable instrument that
provides fast and accurate oxygen monitoring and incorporates an
audio/visual alarm capability. These instruments are designed to monitor
up to 100% oxygen concentration in medical gas mixtures. Because they
are microprocessor-based, the MX300 instruments have a unique
combination of features that make them very easy to use. The operator
interface is accomplished through a series of buttons located
conveniently on the front face of the instrument. The MX300 front face
interface is shown in Figure 1-1.
Figure 1-1: MX300 Front View
The LCD display consists of up to 3.5 characters plus a decimal
point indicator capable of displaying up to 105%. (See Section 1.3
Teledyne Analytical Instruments 9
Introduction MX300
Options for alternate display configuration). An integral battery life
indicator is displayed “on demand” with the MX300.
The instrument is powered by three AA alkaline batteries and is
designed to operate for 2000 hours in non-alarm state.
Oxygen analysis is linear across the single range of 0-100% using
Teledyne’s class R17MED oxygen sensor. A unique sensor failure
alarm is incorporated which warns the user if the sensor signal is lost or
low. When this occurs, the √ SENSOR display flashes. The alarm buzzer
can be silenced by pressing the ALARM SILENCE key. If the alarm
condition is not corrected within 115 seconds the alarm buzzer will
reactivate.
The MX300 unit incorporates a dual concentration alarm with
individual user-defined set points. The set points are displayed on the
lower portion of the LCD display with the low alarm set point appearing
at the lower left and the high alarm appearing on the lower right of the
display. The alarm circuitry provides both an audible and visual alarm.
1.1 Applicable Standards
The MX300 units are built to meet or exceed regulatory and
industry standards for use as a medical device. The instruments are
designed, built and tested with the following applicable standards:
ASTM F 1462: Specifications for Oxygen Analyzers
ASTM F 1463: Specifications for Alarm Signals
ISO 7767: Oxygen Monitors for Monitoring patient
Breathing Mixtures
ISO 9703-1: Anesthesia and Respiratory Care Alarm Signals
Part 1
ISO 9703-2: Anesthesia and Respiratory Care Alarm Signals
Part 2
EN/IEC 60601-1-2: Medical Electrical Equipment—Part 1 General
Requirements for Safety. Electromagnetic
Compatibility Requirements and Test
MIL-STD-810E: Environmental Test Methods
EN/IEC 60601-1: Medical Electrical Equipment-General
Requirements for Safety
Teledyne Analytical Instruments 10
Portable Oxygen Monitor Introduction
1.2 Features
The MX300 is a compact, versatile instrument capable of rapidly
measuring the oxygen content of an atmosphere or environment
accurately to ±2% over the range 0-100% oxygen. The following
features are standard on the MX300 instruments:
• Large easy to read 3 1/2 digit LCD display (see options)
• Automatic LCD back lighting upon key press
• Microprocessor controlled
• Up/Down front panel controls
• Sensor fail/disconnect alarm indicator (audible and
visual)
• Alarm silence button
• 2000 operating hours from 3 AA alkaline batteries
• Battery status indicator
• Stand for upright tabletop deployment
• Hardware for pole clamping and V block support
• Rugged high impact ABS construction
• Splash resistant case.
• Long life (36 months in air) class R17MED sensor
• 0-1 VDC digital output (optional RS-232)
• FDA approved and cleared for CSA/CE marking
• 2 User defined set point controlled concentration alarms
• Battery test function
1.3 Options
The following instrument options are available for the MX300
units:
• A-Option—3-digit LCD display instead of 3 1/2 digit
• B-Option—RS 232 digital output instead of 0-1VDC
Teledyne Analytical Instruments 11
Introduction MX300
Note: Contact the factory for retrofitting an existing instrument
for 3-digit LCD display. For RS-232 reconfiguration, see
Section 2.1.5.
In addition to the above instrument configuration options, the
following optional equipment is available for your instrument:
• Universal Pole Mounting Clamp (P/N CP 2343)
• V-Mount Pole Clamp (P/N CP 2344)
• V-Mount Wall Adapter P/N B 647)
• 0-1 VDC Interface Cable (P/NB-75554)
• RS 232 Interface Cable (P/N B-75555)
1.4 Applications
The MX300 Portable oxygen analyzer is intended to continuously
measure and display the concentration of oxygen in a gas mixtures used
in medical applications such as Anesthesia, Respiratory therapy and is
intended for adult, pediatric and Neonatal populations.
The instruments may be used in verifying oxygen concentrations in
gas mixtures used in:
• Anesthesia
• Respiratory Therapy
• Neonatal Care
1.5 Theory of Operation
The MX300 monitor can be divided into two major functional
groups:
• R17MED Oxygen Sensor
• Signal Processing
The analyzer uses Teledyne Analytical Instruments Patented
R17MED oxygen sensor. The millovolt output signal from the sensor is
fed into the electronic signal processor, where it is used to calculate the
oxygen gas concentration and display it on the LCD screen. The data
from the sensor is compared to the alarm values set by the user, and
Teledyne Analytical Instruments 12
Portable Oxygen Monitor Introduction
activates the audible and visual alarms if the oxygen level exceeds those
values. A unique sensor fail/disconnect alarm is incorporated in the
MX300 to warn the user of a sensor problem. The√ SENSOR indicator
is illuminated on the LCD and the audible and visual alarms are
activated whenever a fault is detected.
1.5.1 Sensor
The MX300 uses the Teledyne Class R17MED disposable oxygen
sensor. The sensor is made up of a sensing cathode and anode (fuel)
immersed in electrolyte and packaged in a small plastic container.
Oxygen entering the sensor reacts with the anode and a proportional
current is collected at the sensing cathode, which is sent to the
electronics where it is converted into a digital signal and displayed on
the LCD Screen.
Attached to the R17MED sensor is a removable plastic diverter.
This diverter is used to facilitate the transport of gas mixtures through
the sensor. The diverter, packaged separately when shipped, is necessary
when the tee adapter is used to sample gas flowing through a tube.
The diverter is not necessary and should not be used when the
sensor is placed directly in a chamber, or when the sensor is used in
confined volume monitoring, such as incubators and inhalation tents.
CAUTION: THE R17MED SENSOR CONTIANS A CAUSTIC
ELECTROLYTE AND LEAD. DO NOT TRY TO OPEN
THE SENSOR ASSEMBLY. CHECK THE SENSOR
REGULARLY FOR LEAKS. IF THE SENSOR IS
LEAKING, REPLACE IT. DO NOT TRY TO REPAIR IT.
CONTACT TELEDYNE FOR THE MATERIAL SAFETY
DATA SHEET RELATED TO HANDLING AND
DISPOSAL.
CAUTION: REMOVE AND SAVE THE DIVERTER WHEN THE
SENSOR IS USED IN CONFINED VOLUME
APPLICATIONS.
1.5.2 Signal Processing
The electrical voltage developed in the sensor is sent to the electronics.
Processing includes amplification, conversion to digits, and comparison to
Teledyne Analytical Instruments 13
Introduction MX300
alarm set points if appropriate. Using a microprocessor allows for easier
setting of alarms, automatic calibration, and self-diagnosis.
The oxygen level is calculated and then displayed on the liquid
crystal display (LCD) on the front panel.
In the MX300 monitor, user-programmed high and low alarm set
points are stored in random access memory (RAM), which resides within
the microprocessor. The oxygen level calculated by the microprocessor is
compared to these set points, and an alarm activated, if necessary.
The audio alarm is used for both the concentration alarms and the
sensor disconnects alarm. The user can manually bypass the
concentration alarm for a set amount of time. Pressing the ALARM
SILENCE key will provide an audible alarm override for 115 seconds.
After that, if the alarm condition still prevails, the audible alarm will
resume. The ALARM SILENCE key can also be used to interrupt the
sensor disconnects audible alarm.
Teledyne Analytical Instruments 14
Portable Oxygen Monitor Operation
Operation
Note: Upon receipt, INSPECT THE ENTIRE UNIT FOR
DAMAGE. Check the unit and all included accessories for
broken or loose parts. If damaged, DO NOT USE. Notify
the shipper, and consult Teledyne Analytical Instruments.
Note: This equipment is internally powered using 3 AA batteries.
CAUTION: THE MX300, OXYGEN SENSOR AND ASSOCIATED
HARDWARE ARE NON-STERILE DEVICES. DO NOT
AUTOCLAVE THE INSTRUMENT OR SENSOR, AS
THIS WILL DAMAGE THE EQUIPMENT.
2.1 Setup
The MX300 Portable Oxygen Monitor is suitable for use in many
medical applications. The unit is equipped with a stand and can be used
on a tabletop or wall mounted using mounting bracket. An optional pole
mount clamp is also available.
To set up and use your MX300 monitor:
1. Install the sensor.
2. Install the batteries.
3. Calibrate the unit.
4. Set the alarms.
The control keys are designed for easy operation. A LOCK/UNLOCK
key has been supplied to prevent accidental changes to critical settings. This
eliminates unwanted changes in calibration or alarm settings from accidental
touching or bumping of the keys. To further reduce the possibly of incorrect
adjustments at least two keys must be pressed in order to modify a critical
calibration or alarm set point value.
Note: The ALARM SILENCE and BATT TEST key continue to
operate normally when the lock feature is activated.
Teledyne Analytical Instruments 15
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