Portable Oxygen Monitor
OPERATING & SERVICE INSTRUCTIONS FOR
MX300
PORTABLE OXYGEN MONITOR
P/N M75387
ECO 03-0166
REV 0
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).
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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.
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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.
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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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Table of Contents
Safety Messages .......................................................................... |
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List of Figures.............................................................................. |
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List of Tables .............................................................................. |
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Introduction ................................................................................... |
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1.1 |
Applicable Standards |
10 |
1.2 |
Features |
11 |
1.3 |
Options |
11 |
1.4 |
Applications |
12 |
1.5 |
Theory of Operation |
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1.5.1 Sensor |
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1.5.2 Signal Processing |
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Operation ..................................................................................... |
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2.1 |
Setup |
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2.1.1 Sensor Installation or Replacement |
16 |
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2.1.2 Mounting |
18 |
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2.1.2.1 V-Mount Adapter Installation |
18 |
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2.1.2.2 Universal Mounting Clamp Installation |
18 |
2.1.3 Battery Installation |
19 |
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2.1.3 Calibration |
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2.1.4 Alarms |
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2.1.5 Output 0-1 VDC or RS232 |
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2.2 |
Use |
25 |
2.2.1 Procedure |
25 |
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2.3 |
Gas Sampling |
26 |
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2.3.1 Humidity |
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2.3.2 Temperature |
27 |
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2.3.3 Pressure |
27 |
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2.3.4 Discrepancy in Readings |
28 |
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2.3.5 Anesthetic Gases |
28 |
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2.3.5.1 Gases That Induce Reading Error |
28 |
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2.3.5.2 Care After Use in Nitrous Oxide |
29 |
2.3.6 Cleaning |
30 |
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2.4 |
Do’s and Don’ts |
31 |
Service Manual ............................................................................ |
35 |
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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 |
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3.7.2 Temperature |
37 |
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3.7.3 Pressure |
38 |
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3.7.4 Discrepancy in Readings |
38 |
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3.8 |
Troubleshooting |
39 |
3.9 |
Watchdog |
42 |
3.10 Other Problems with the Instrument |
43 |
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3.11 Return Authorization for Service |
44 |
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Appendix ...................................................................................... |
45 |
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A.1 Specifications |
45 |
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A.2 Spare Parts List |
46 |
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A.3 Optional Accessories |
46 |
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Index |
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49 |
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List of Figures |
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Figure 1-1: MX300 Front View......................................................... |
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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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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 |
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Introduction |
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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
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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
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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
1.3Options
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
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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)
1.4Applications
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
1.5Theory 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
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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
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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.
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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.
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