Teledyne MX300 User Manual
Portable Oxygen Monitor
OPERATING & SERVICE INSTRUCTIONS FOR
MX300
PORTABLE OXYGEN MONITOR
P/N M75387
Sep 18, 2009
ECO 09-0158
TYPE B APPLIED PART:
Equipment provides a degree of protection against electric shock,
particularly regarding—
• Allowable Leakage Current
• Reliability of the protective earth connection (if present).
Teledyne Analytical Instruments i
MX300
Copyright © 2009 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 Analytical Instruments,
16830 Chestnut Street, City of Industry, CA 91749-1580, USA.
Warranty
Teledyne warrants that the goods are free from defects of material and of construction
for a period of 2 years (or less, as the case may be, with consumables) from the date of
shipment from Teledyne. The liability of Teledyne, if any, shall be limited solely to the
replacement or 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.
Teledyne cannot warrant any damage resulting from unauthorized repair, misuse, improper maintenance, negligence, or other events not caused by Teledyne or our goods.
CAUTION: FEDERAL LAW RESTRICTS THIS DEVICE TO SALE BY OR
ON THE ORDER OF A PHYSICIAN.
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Portable Oxygen Monitor
About This Manual
This Manual describes the installation, configuration, operation and
maintenance instructions for Model MX300 Portable Oxygen Monitor.
This Manual contains Cautions, Warnings, and Notes to ensure safe
and efficient performance of the Monitor.
For convenience with operating and maintaining your Monitor, this
manual includes Specifications, Troubleshooting and Maintenance Spare
Parts sections.
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
commission your Monitor, it becomes a quick reference guide to help
you with specific questions or operating challenges.
Before operating the Monitor for the first time, you are advised to
read and familiarize yourself with the contents of this manual.
Teledyne Analytical Instruments iii
MX300
Safety Messages
Your safety and the safety of others are very important. Please carefully read and understand the Caution, Warning and Notes found in several places in the manual.
CAUTION: THE MONITOR SHOULD ONLY BE USED FOR THE PUR-
POSES AND IN THE MANNER DESCRIBED IN THIS MANUAL.
IF YOU USE THE MONITOR 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 ...................................................................................... 1
1.1 Features .................................................................................... 3
1.2 Options ...................................................................................... 4
1.3 Applications ............................................................................... 4
1.4 Operation Summary .................................................................. 4
Operating Instructions ..................................................................... 7
2.1 Setup ......................................................................................... 7
2.1.1 Sensor Installation or Replacement ........................................ 7
2.1.2 Mounting ................................................................................. 9
2.1.2.1 V-mount adapter installation ................................................ 9
2.1.2.2 Universal Mounting Clamp Installation .............................. 10
2.1.3 Battery Installation ................................................................ 10
2.1.4 Calibration ............................................................................ 11
2.1.5 Alarms .................................................................................. 13
2.1.6 Output 0-1 VDC or RS232 .................................................... 15
2.2 Operation ................................................................................. 17
2.2.1 Procedure ............................................................................. 17
2.3 Factors Affecting Sampling Accuracy ...................................... 18
2.3.1 Humidity ............................................................................... 18
2.3.2 Temperature ......................................................................... 18
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MX300
2.3.3 Pressure ............................................................................... 18
2.3.4 Discrepancy in Readings ...................................................... 19
2.3.5 Anesthetic Gases ................................................................. 19
2.3.5.1 Gases That MAY INDUCE Reading Error ......................... 19
2.3.5.2 Care After Use in Nitrous Oxide ........................................ 20
2.3.6 Cleaning ............................................................................... 21
2.4 Dos and Don’ts ........................................................................ 21
Service Instructions ....................................................................... 23
3.1 General Service Information .................................................... 23
3.2 Overall Maintenance ............................................................... 23
3.3 Battery Maintenance ............................................................... 23
3.4 Sensor Maintenance ............................................................... 24
3.5 Calibration ............................................................................... 24
3.6 Alarms ..................................................................................... 24
3.7 Factors Affecting Sampling Accuracy ...................................... 24
3.8 Troubleshooting ...................................................................... 24
3.9 Watchdog ................................................................................ 27
3.10 Other Problems with the Monitor ........................................... 28
3.11 Return Authorization for Service ........................................... 29
Appendix ....................................................................................... 30
A.1 Specifications .......................................................................... 30
A.2 Spare Parts List ...................................................................... 32
A.3 Optional Accessories .............................................................. 32
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Portable Oxygen Monitor
List of Figures
Figure 1-1: MX300 Front View ......................................................... 1
Figure 2-1: Installing the R17MED Sensor ...................................... 8
Figure 2-2: Sensor Cable Connection to Monitor ............................ 8
Figure 2-3: Mounting the Sensor in the Tee Adapter ....................... 9
Figure 2-4: V-Mount Adapter Installation ......................................... 9
Figure 2-5: Brass Insert for Universal Mounting Clamp ................. 10
Figure 2-6: Installing Batteries ....................................................... 11
Figure 2-7: Calibration Sequence .................................................. 12
Figure 2-8: Setting the Alarms ....................................................... 14
Figure 2-9: 0-1 VDC or RS 232 Digital Output Port ....................... 15
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MX300
List of Tables
Table 2-1: Oxygen Reading Error in a Mixture of Anesthetic Gas . 19
Table 3-1 Troubleshooting ............................................................ 25
Table 3.2 Error Codes ................................................................... 27
Teledyne Analytical Instruments viii
Portable Oxygen Monitor Introduction
Introduction
The Teledyne Analytical Instruments MX300 Oxygen Monitor, hereinafter referred to as MX300 or Monitor, is a portable monitor designed to analyze oxygen concentration in medical gas mixtures. The
Monitor is equipped with oxygen concentration alarms. Oxygen analysis is linear across the single range of 0-100% using Teledyne’s class
R17MED oxygen sensor.
Figure 1-1: MX300 Front View
The MX300’s liquid crystal display (LCD) consists of up to 3.5
characters plus a decimal point indicator capable of displaying up to
105%. An integral battery life indicator is displayed continuously on the
MX300.
The Monitor is powered by three AA alkaline batteries and is designed to operate for 2000 hours on a single set of batteries in a Nonalarm State.
Teledyne Analytical Instruments 1
Introduction MX300
A sensor failure alarm is incorporated which warns the user if the
sensor signal is lost or low. When this occurs, the √SENSOR display
and a visual green light will flash, and the alarm buzzer will activate.
This alarm condition is also triggered when the oxygen concentration at
the point of analysis falls below 18% (Reference: ISO 7767 standard).
For safety reasons, when any of the above referenced conditions occur,
the alarm buzzer cannot be silenced until the alarm condition is resolved.
CAUTION: DURING NORMAL USE, ALARM CONDITIONS SHOULD
NOT BE OVERRIDDEN BY ACTIONS SUCH AS HOLDING
THE ALARM SILENCE KEY DEPRESSED OR REMOVING
THE BATTERIES. THE CAUSE FOR THE ALARM CONDITION SHOULD FIRST BE RESOLVED.
CAUTION: WHILE HOLDING DOWN THE ALARM SILENCE KEY MAY
MOMENTARILY SILENCE THE ALARM BUZZER ACTIVATED BECAUSE OF REASONS MENTIOEND ABOVE,
AUDIBLE ALARM WILL RETURN UPON DISENGAGING THE
ALARM SILENCE KEY. HOLDING THE KEY FOR LONGER
DURATIONS WILL INITIATE THE “STUCK KEY” ALARM,
WHICH CAN BE DEACTIVATED ONLY VIA REMOVING THE
BATTERIES FROM THE ANALYZER. ANALYZER SHOULD
BE RECALIBRATED UP ON REPOWERING. .
The MX300 Monitor 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 circuit provides both an audible and a visual alarm.
When the oxygen concentration reaches levels beyond the pre-set
alarm limits, the following will occur:
1. If the HI alarm is triggered because of monitored oxygen level
exceeding the high alarm set point, the green light display will
flash and the alarm buzzer will activate. The alarm buzzer can
be silenced by pressing the Alarm Silence key.
NOTE: IF THE ALARM CONDITION IS NOT CORRECTED WITHIN
ABOUT 115 SECONDS, THE ALARM BUZZER WILL REACTIVATE. PRESSING THE ALARM SILENCE KEY AGAIN
WILL SILENCE THE ALARM BUZZER ONCE AGAIN FOR
ABOUT 115 SECONDS, WITH THE BUZZER REAACTIVATING IF THE ALARM CONDITIONS PERSIST.
2. If the LO alarm is triggered because of monitored oxygen level
falling below the low alarm set point, the green light display will
flash and the alarm buzzer will activate.
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Portable Oxygen Monitor Introduction
NOTE: IF THE LOW ALARM CONDITION IS TRIGGERED WITH
THE OXYGEN LEVEL STAYING ABOVE THE SAFETY LIMIT
OF 18%, THE ALARM BUZZER CAN BE DEACTIVATED BY
PRESSING THE ALARM SILENCE KEY. IF ALARM CONDITION IS NOT CORRECTED WITHIN ABOUT 115 SECONDS,
THE ALARM BUZZER WILL REACTIVATE. PRESSING THE
ALARM SILENCE KEY AGAIN WILL SILENCE THE ALARM
BUZZER ONCE AGAIN FOR ABOUT 115 SECONDS, WITH
THE BUZZER REAACTIVATING IF THE ALARM CONDITIONS PERSIST.
NOTE: IF THE LOW ALARM CONDITION IS TRIGGERED WITH
THE OXYGEN LEVEL FALLING BELOW 18%, THE
√SENSOR SIGN WILL FLASH ALONG WITH THE GREEN
LIGHT, AND THE BUZZER WILL ACTIVATE. IN THIS CONDITION, THE ALARM BUZZER CANNOT BE SILENCED.
WHILE HOLDING DOWN THE ALARM SILENCE KEY MAY
MOMENTARILY SILENCE THE ALARM BUZZER, AUDIBLE
ALARM WILL RETURN UPON DISENGAGING THE ALARM
SILENCE KEY. HOLDING THE KEY FOR LONGER DURATIONS WILL INITIATE THE “STUCK KEY” ALARM, WHICH
CAN BE DEACTIVATED ONLY VIA REMOVING THE BATTERIES FROM THE ANALYZER. ANALYZER SHOULD BE
RECALIBRATED UP ON REPOWERING.
1.1 Features
The following features are standard on the MX300 Monitor:
Large easy to read 3½-digit LCD (see options)
Automatic LCD back lighting upon key press
Microprocessor controlled
Up/Down control keys on the front panel
Sensor fail/disconnect alarm indicator (audible and visual)
Two adjustable concentration alarms with user-defined set
points
Alarm Silence key
2000 operating hours from 3 AA alkaline batteries
Battery status indicator
Battery test function
Stand for upright tabletop deployment
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Introduction MX300
Rugged high impact ABS plastic construction
Splash resistant case.
Long life class R17MED sensor
0-1 VDC digital output (optional RS-232)
FDA 510(k) market clearance
1.2 Options
The following options are available for the MX300 Monitor:
A-Option—2½-digit LCD instead of 3½-digit
NOTE: CONTACT FACTORY FOR MODIFYING YOUR MONITOR FOR 2½-
DIGIT LCD. FOR RS-232 RECONFIGURATION, SEE SECTION 2.1.5.
B-Option—RS 232 digital output instead of 0-1VDC
Universal Pole Mounting Clamp (P/N CP 2345)
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)
1.3 Applications
The MX300 Monitor is intended for spot checking the concentration of oxygen in gas mixtures used in applications such as Anesthesia
gas delivery and Respiratory care, and is intended for adult, pediatric
and neonatal populations.
1.4 Operation Summary
The MX300 Monitor uses Teledyne Analytical Instruments’ Patented R17MED oxygen sensor. The sensor output is used to determine
the oxygen gas concentration. The data from the sensor is compared to
the alarm values set by the user, and activates the audible and visual
alarms if the oxygen level crosses the threshold values. Sensor
fail/disconnect alarm is incorporated in the Monitor to warn the user of a
sensor problem. TheSENSOR indicator is illuminated on the LCD and
the audible and visual alarms are activated whenever a fault is detected.
Teledyne Analytical Instruments 4
Portable Oxygen Monitor Introduction
The Class R17MED oxygen sensor is a disposable sensor. The sensor has a cathode (sensing electrode), an anode (counter electrode), and
a compatible electrolyte, and is packaged in a small plastic sensor body.
Oxygen entering the sensor reacts with the anode and a proportional current is collected at the cathode, which is then converted into a digital
signal and displayed on the LCD screen on the Monitor.
Used with 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 analysis, such as incubators and inhalation tents.
The audio alarm is used for both the concentration alarms and the
sensor-disconnect 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 sensordisconnect audible alarm.
CAUTION STATEMENTS:
THE R17MED SENSOR CONTAINS A CAUSTIC ELECTROLYTE AND LEAD. DO NOT TRY TO OPEN THE SENSOR
ASSEMBLY. CHECK THE SENSOR PERIODICALLY FOR
LEAKS. IF THE SENSOR IS LEAKING, REPLACE IT. DO
NOT TRY TO REPAIR IT. CONTACT YOUR DISTRIBUTOR
OR TELEDYNE FOR THE MATERIAL SAFETY DATA SHEET
RELATED TO HANDLING AND DISPOSAL OF THE SENSOR.
THE R17MED SENSOR CONTAINS A CAUSTIC ELECTROLYTE, AND IN THE EVENT OF A LEAK, THE ELECTROLYTE
MAY ATTACK CERTAIN MATERIALS IT IS EXPOSED TO,
SUCH AS ALUMINUM. USE PRECAUTION IN YOUR
CHOICE OF INTERFACE MATERIALS.
REMOVE AND SAVE THE DIVERTER WHEN THE SENSOR
IS USED IN CONFINED VOLUME APPLICATIONS.
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