Portable Oxygen Analyzer OPERATING & SERVICE INSTRUCTIONS FOR AX300 PORTABLE OXYGEN ANALYZER P/N M75389 Sep 18, 2009 ECO 09-0159 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
AX300 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.
Portable Oxygen Analyzer About This Manual This Manual describes the installation, configuration, operation and maintenance instructions for Model AX300 portable oxygen analyzer. This Manual contains Cautions, Warnings, and Notes to ensure safe and efficient performance of the analyzer. For convenience with operating and maintaining your analyzer, this manual includes Specifications, Troubleshooting and Maintenance Spare Parts sections.
AX300 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 ANALYZER SHOULD ONLY BE USED FOR THE PURPOSES 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.
Portable Oxygen Analyzer Table of Contents Safety Messages .......................................................................... iv List of Figures .............................................................................. vii List of Tables .............................................................................. viii Introduction ................................................................................... 1 1.1 Features 2 1.2 Options 3 1.3 Applications 3 1.
AX300 2.3.5.2 Care After Use in Nitrous Oxide 2.3.6 Cleaning 2.4 Dos and Don’ts 18 19 19 Service Instructions .................................................................... 21 3.1 General Service Information 21 3.2 Overall Maintenance 21 3.3 Battery Maintenance 21 3.4 Sensor Maintenance 22 3.5 Calibration 22 3.6 Factors Affecting Sampling Accuracy 22 3.7 Troubleshooting 22 3.8 Watchdog 25 3.9 Other Problems with the Analyzer 26 3.10 Return Authorization for Service 26 Appendix ..
Portable Oxygen Analyzer List of Figures Figure 1-1: AX300 Front View ......................................................... 1 Figure 2-1: Installing the R17MED Sensor ...................................... 7 Figure 2-2: Sensor Cable Connection to Analyzer ......................... 7 Figure 2-3: Mounting the Sensor in the Tee Adapter ....................... 8 Figure 2-4: V-Mount Adapter Installation ......................................... 8 Figure 2-5: Brass Insert for Universal Mounting Clamp ......
AX300 List of Tables Table 2-1: Oxygen Reading Error in a Mixture of Anesthetic Gas . 17 Table 3-1 Troubleshooting ............................................................ 23 Table 3.2 Error Codes ...................................................................
Portable Oxygen Analyzer Introduction Introduction The Teledyne Analytical Instruments AX300 Oxygen Analyzer, hereinafter referred to as AX300 or analyzer, is a portable analyzer designed to analyze oxygen concentration in medical gas mixtures. Oxygen analysis is linear across the single range of 0-100% using Teledyne’s class R17MED oxygen sensor. Figure 1-1: AX300 Front View The AX300’s liquid crystal display (LCD) consists of up to 3.
Introduction AX300 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, the audible alarm 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.
Portable Oxygen Analyzer 0-1 VDC digital output (optional RS-232) FDA 510(k) market clearance Introduction 1.2 Options The following options are available for the AX 300-I analyzer: Note: A-Option—2½-digit LCD instead of 3½-digit Contact the factory for modifying your analyzer for 2½-digit LCD. For RS-232 reconfiguration, see Section 2.1.5.
Introduction AX300 rent is collected at the cathode, which is then converted into a digital signal and displayed on the LCD screen on the analyzer. 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.
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Operating Instructions AX300 Operating Instructions Notes: Upon receipt, INSPECT THE ENTIRE UNIT FOR ANY DAMAGE. Check the unit and all included accessories for broken or loose parts. If damaged, DO NOT USE. Notify the shipper, your distributor or Teledyne Analytical Instruments. This equipment is internally powered using 3 AA batteries. The LOCK/UNLOCK key helps prevent accidental change to the calibration set point.
Portable Oxygen Analyzer Operating Instructions 2. Plug one end of the coiled cable into the receptacle on the back of the R17MED sensor and secure it in place with the capture nut located at the base of the connector. See Figure 2-1. Figure 2-1: Installing the R17MED Sensor 3. Plug the other end of the cable into the receptacle located on the side of the unit and secure it using the capture nut. See Figure 2-2.
Operating Instructions AX300 the sensor is used with a Tee Adapter, such as in a breathing system, the diverter must be used as shown in Figure 2-3. Figure 2-3: Mounting the Sensor in the Tee Adapter 2.1.2 Mounting The AX300 can be mounted in several ways depending on the optional equipment ordered at the time of purchase. See Section 1.3. 2.1.2.1 V-Mount Adapter Installation The V-Mount Adapter consists of a matching plastic plate with integral Vgrooves that attach to the rear of the analyzer.
Portable Oxygen Analyzer Operating Instructions 2.1.2.2 Universal Mounting Clamp Installation The optional Universal Mounting Clamp comes with a 1/4-20 screw for securing the clamp to the rear of the analyzer. A threaded brass insert is installed on the back of the analyzer for this purpose. See Figure 2-5. Figure 2-5: Brass Insert for Universal Mounting Clamp 2.1.3 Battery Installation Note: Three “AA” alkaline batteries must be installed in the unit before the analyzer will operate.
Operating Instructions AX300 Figure 2-6: Installing Batteries 4. Re-install the battery compartment door. When the unit is first turned on, the screen will momentarily display all LCD segments. During this period, diagnostic tests are being conducted to ensure that the circuits are functioning correctly. The unit will activate the audible and visual alarms for about 1 second. The LCD will flash continuously indicating the unit is in the unlocked position ready for calibration.
Portable Oxygen Analyzer Operating Instructions Figure 2-7: Calibration Sequence To calibrate the analyzer (See Figure 2-7): 1. Turn the unit on by pressing the ON/OFF (I/O) key. 2. Check the battery status via the bar graph. 3. If the LCD is not flashing, press the LOCK/UNLOCK key to unlock the keys. LCD will flash indicating that changes can be made to the settings. If the batteries have just been installed the LCD will flash 00.0 4.
Operating Instructions AX300 press the key once more or allow the software to revert to the locked mode automatically, which will occur within nine seconds of not pressing any functional keys. Once the analyzer reaches the locked mode, press the LOCK/UNLOCK key and press the CAL key to repeat calibration. Note: The AX300 can only be calibrated using certified medical grade 100% oxygen or ambient level air (20.9% Oxygen).
Portable Oxygen Analyzer Operating Instructions When properly calibrated, the output signal generated by the analyzer is linear and proportional to the oxygen concentration. If you requested Option-B (RS 232 digital output) at the time of purchase, a digital RS 232 signal is output from the output port shown in Figure 2-8. Use the optional RS 232 Interface Cable (P/N B-75555) available from Teledyne for connection to a standard RS 232 port on a computer or other suitably equipped digital device.
Operating Instructions AX300 Windows 98, Windows 2000 and Window XP version: Baud: 2400 Data: 8 Parity: ODD Stop bit: 1 Flow control: NONE Teledyne Analytical Instruments 14
Portable Oxygen Analyzer Operating Instructions 2.2 Operating Instructions 2.2.1 Procedure Note: Prior to every use, always test the batteries, check the sensor for any leaks or damage, and check the analyzer calibration.
Operating Instructions AX300 2.3 Factors Affecting Sampling Accuracy 2.3.1 Humidity Humidity does not directly affect the accuracy of the sensor's measurement. However, when a nebulizer or other device is used to increase moisture levels in gas mixtures, the moisture actually dilutes the mixture. This dilution effect decreases the oxygen concentration. Your portable oxygen analyzer accurately measures the decreased oxygen concentration.
Portable Oxygen Analyzer Operating Instructions When a ventilator is a part of the breathing system, the alternating “breathing” pressure cycles generated by the ventilator will be sensed as pressure pulses by the sensor, and over time, such pulses manifest as pressure increases in the fast-reacting sensors such as R17MED. This perceived pressure increase results in correspondingly higher oxygen reading.
Operating Instructions AX300 Error Helium 50%, balance O2 0% Nitrous Oxide 80%, balance O2 0% Carbon Dioxide 10%, balance O2 0% Halothane 4% < 1.5% O2 * Enflurane 5% < 1.5% O2 * Isoflurane 5% < 1.5% O2 * Sevoflurane 5% < 1.5% O2 * Desflurane 15% < 1.5% O2 * * Errors are approximate and may vary based on exposure times and concentrations. These performances meet or exceed the requirements of ISO 7767: 1997 (E).
Portable Oxygen Analyzer Operating Instructions 2.3.6 Cleaning The AX300 and R17MED sensor are non-sterile devices. The oxygen analyzer, oxygen sensor, and sensor interconnection cable may be cleaned by wiping the surfaces with isopropyl alcohol or a mild cleaning solution. When cleaning, do not allow liquids or moisture to enter the analyzer or sensor internal cavities. Do not expose the electrical connections to the cleaning solution.
Operating Instructions AX300 – DON’T – Use this analyzer if you suspect any malfunction. Use the analyzer in the presence of flammable gases. Use anything but alkaline batteries. Autoclave or freeze the sensor or analyzer. Open or try to repair a leaking or broken sensor. Immerse the unit or sensor in any liquid. Pass hot or cold gas mixtures over the sensor.
Portable Oxygen Analyzer Service Instructions Service Instructions 3.1 General Service Information Without access to special probes and test equipment, troubleshooting and repair of the board or its components are not feasible. A factory replacement of the entire PC board is recommended if necessary. With the exception of replacing the sensor or batteries, there are no userserviceable components inside the unit.
Service Instructions AX300 3.4 Sensor Maintenance DO check the sensor for damage or leaks before use. DON’T immerse the R17MED sensor in liquid. DON’T autoclave the R17MED sensor. DON’T open or try to repair the sensor. Before every use, the sensor, cable and connections should be checked. Check the sensor for leaks and condensation. Check the cable for splitting or cracked insulation. Make sure the connections are tight and dry.
Portable Oxygen Analyzer Service Instructions Table 3-1 Troubleshooting Symptom Why What To Do New sensor responds slow or drifts. If the sensor is new and was just removed from its sealed bag it may need to run for several hours. A) Wait 1–2 hours and recalibrate. Sensor will not read below 22 % after calibration in 100% O2. Calibration in 100% was invalid or the room air enriched with excess oxygen. A) Recalibrate using dry gas B) Make sure that at least 6" (30 cm.
Service Instructions AX300 Symptom Why oxygen. What To Do O2 and check calibration. C) The sensor output has fallen to a level where it is no longer usable. Replace sensor. The oxygen reading fluctuates or appears to be incorrect. The sample pressure may be changing. A) During calibration, make sure there is no restriction on exhaust side of sensor. If the reading changes with flow, the sensor is pressurized or there may be a leak in the system.
Portable Oxygen Analyzer Symptom Why tion Note: Service Instructions What To Do C) Calibrate. In the event that none of these procedures produces desired results, remove the batteries and return the unit to Teledyne for repair. 3.8 Watchdog The AX300 is equipped with a watchdog circuit that continuously analyzes the electronics for proper operation. If the watchdog detects a failure, one of the codes in Table 3.3 will appear on the LCD.
Service Instructions AX300 50 5 The ADC circuit failed during POST. 6 (5) 6 A stuck key has been detected. The second digit example (5) on the display shows which key is stuck: (There is no indication of which key is stuck) 1 - Batt 2 - Cal 5 - Silence 8 - Key Lock 7(2) 7 (There is no indication of the type of DAC failure) A failure has occurred during the automatic calibration of the digital to analog converter (DAC) circuit.
Portable Oxygen Analyzer Appendix tetci_customerservice@teledyne.com You can also contact us at the address below. Customer Service Department TELEDYNE Analytical Instruments 16830 Chestnut Street City of Industry, CA 91749-1580 USA Phone (626) 934-1500, Fax (626) 961-2538 Or via the web at: www.teledyne-ai.
Appendix AX300 Appendix A.1 Specifications Range: 0-100% oxygen Accuracy: +2% of full scale (at constant temperature and pressure) Response Time: 90% in less than 6 seconds at 25 °C Battery Life: Approximately 2000 hours of continuous use in non-alarm condition System Power: 3 AA alkaline batteries.
Portable Oxygen Analyzer Appendix A.2 Spare Parts List QTY 1 PART NO C43690-R17MED 3 1 1 B99 C74721 A268 DESCRIPTION Micro-Fuel Cell R17MED with flow diverter P/N A50057 “AA” size alkaline battery Cable assembly Tee adapter (22 mm) A.
Appendix AX300 Orders should be sent to: TELEDYNE Analytical Instruments 16830 Chestnut Street City of Industry, CA 91749-1580 Phone (626) 934-1500, Fax (626) 961-2538 Web: www.teledyne-ai.com Or your local representative.
