TED 200-T - Teledyne Analytical Instruments
Contents
1. INSTRUCTION MIANUAL TED200 T PORTABLE OXYGEN MONITOR TYPE B EQUIPMENT Equipment providing a particular degree of protec tion against electric shock particularly regarding e allowable LEAKAGE CURRENT e Reliability of the protective earth connection if present P N MC41901 02 04 09 99 ECO 99 0159 4 Teledyne Analytical Instruments i Copyright 1999 Teledyne Electronic Technologies 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 Electronic Technologies 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 Opera tion of this equipment in a residential area may cause interference in which case the user2. 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 NOTE This analyzer has been evaluated according to ISO 7767 1997 Non compliances to this standard exist in relation to the requirements for Alarm frequency audibility maximum silence period and low alarm threshold minimum level AT Teledyne Analytical Instruments 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 T 7 Micro Fuel Cell is warranted for one year 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 acci dent 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 RFVEMI Immunity The Teledyne Model TED 200 T has been tested to the standard required by the European Community for CE marking EN 60601 1 2 The sample subjected to testing passed all sections of this testing with the exce
3. A 5 AOA Discrepancy in Readings iii it at dues A 5 A 6 Material Safety Data Sheet ua A 6 Teledyne Analytical Instruments About This Manual The TED 200 T Operator s Manual provides both introductory and detailed informa tion for installing and operating the monitor The manual takes you from the time you unpack the box until you complete the first normal operating sample 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 complete product specifications and spare parts list is also included as an appendix Chapter 1 An introduction to the monitor and its components features and applica tions 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 TED 200 T 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 even turn on the monitor you are advised to read Chapters 1 and 2 These chapters help you to become better acquainted with the monitor and how
4. Dermal Inhalation Signs symptoms of exposure Medical conditions aggravated by exposure Carcinogenity Other health hazards Ingestion eye skin contact 05 mg cu m Pb 2 mg cu m KOH The electrolyte could be harmful or fatal 1f swal lowed Oral LD50 RAT 3650 mg kg The electrolyte is corrosive eye contact could result in permanent loss of vision The electrolyte is corrosive skin contact could result in a chemical burn Liquid inhalation is unlikely Contact with skin or eyes will cause a burning sensa tion and or feel soapy or slippery to touch None NTP Annual Report on Carcinogens Not listed LARC Monographs Not listed OSHA Not listed Lead is listed as a chemical known to the State of California to cause birth defects or other reproduc tive harm A 8 A Teledyne Analytical Instruments Appendices Section V Emergency and First Aid Procedures Eye Contact Flush eyes with water for at least 15 minutes and get immediate medical attention Skin Contact Wash affected area with plenty of water and remove contaminated clothing If burning persists seek medical attention Ingestion Give plenty of cold water Do not induce vomiting Seek medical attention Do not administer liquids to an unconscious person Inhalation Liquid inhalation is unlikely Section VI Handling Information NOTE The oxygen sensors are sealed and under normal circumstances the contents of the sensor
5. Sensor Installation or Replacement Note The T 7 oxygen sensor must be installed before the TED 200 T can be operated For sterilization procedures see page 2 8 Sterilization Note When a new sensor is installed typically the unit is suitable for use immediately after installation CAUTION Do not autoclave the sensor 1 Remove the new sensor from its protective bag Inspect the sensor for damage or electrolyte leakage If the sensor is damaged obtain a replacement Do not use the defective sensor as it may damage the unit WARNING THE SENSOR ELECTROLYTE IS CAUSTIC DO NOT LET IT COME IN CONTACT WITH SKIN IF IT DOES FLUSH AF FECTED AREA WITH WATER DO NOT ATTEMPT TO OPEN OR REPAIR THE SENSOR LEAKING OR EXHAUSTED SEN SORS SHOULD BE DISPOSED OF INACCORDANCE WITH LOCAL REGULATIONS CONSULT THE MATERIAL SAFETY DATA SHEET IN THE APPENDIX Micro Fuel Gell gt Flow AL Diverter Tee Sensing gt Adapter Surface i Figure 3 Mounting the sensor in the tee adapter 47 Teledyne Analytical Instruments 2 3 2 Operations HI amp LO alarm settings HI alarm set key Battery test key Red LED alarm Up key ON OFF key LCD display LO alarm set key Alarm test key Alarm silence key Down key Calibration key Figure 4 TED 200 T front touch panel 2 Plug one end of the coiled cable into the telephone jack receptacle on the end of the T 7 sensor The jack will only fit one way so if it will not fit
6. after replacing the batteries e Recalibrate after replacing the sensor e Use properly installed alkaline batteries only e Make sure the T 7 sensor is properly attached e Use the plastic flow diverter only when using the tee adapter e Remove and save the plastic flow diverter when using the unit in chamber applications incubators tents etc e Perform an alarm test before each use press the ALARM TEST key twice e Clean the case with isopropyl alcohol or mild detergent only DON T e Use the TED 200 T if you suspect any malfunction e Use the TED 200 T in the presence of flammable gases e Use anything but alkaline batteries e Autoclave or freeze the T 7 sensor or TED 200 T unit e Open or try to repair a leaking or broken sensor Immerse the unit or sensor in any liquid e Pass hot or cold gas mixtures over the sensor e Expose the unit to devices that produce high levels of radio short wave microwave x ray or high frequency interference e Use cleaning agents or liquids in the cable receptacles or around the battery compartment e Place the TED 200 T unit itself in a water vapor saturated environment e Expose the LCD to excessive sunlight e Expose the TED 200 T to a condensing water environment such as a mist tent 47 Teledyne Analytical Instruments 2 9 2 Operations 2 10 67 Teledyne Analytical Instruments Maintenance and Troubleshooting 3 Maintenance and Troubleshooting 3
7. it works before you actually begin to use it Please read Chapter 2 Operations in its entirety before proceeding further with the manual 4 Teledyne Analytical Instruments v vi Teledyne Analytical Instruments Introduction 1 Introduction The Teledyne Electronics Technologies 200 T Portable Oxygen Monitor is an easy to use portable instrument that provides fast and accurate oxygen monitoring and audio visual alarm capability The TED 200 T is designed to monitor up to 100 oxygen concentration in medical gas mixtures Because it is microprocessor based the TED 200 T has a unique combination of features and is very easy to use through a touch panel designed for minimal operator interface Figure 1 Front view of the TED 200 T 1 1 Applications The TED 200 T is designed to be used for monitoring oxygen concentrations in a variety of medical gas mixtures This instrument should never be used as a primary monitoring device It is recommended that the instrument only be used as a secondary measuring device to verify the concentration of oxygen in gas mixtures prepared using a gas blender anesthesia gas machine or similar apparatus AS Teledyne Analytical Instruments 1 1 1 Introduction The monitor may be used for verifying oxygen concentrations in gas mixtures used in e Anesthesia e Respiratory Therapy e Neonatal Care 1 2 Theory of Operation The TED 200 T can be divided into two major function
8. percentage of oxygen in not changing it is the total pressure that is increas ing producing a corresponding increase in the partial pressure of oxygen A hundred centimeter water pressure pulse will produce a 1 1 atmosphere or an 11 increase in the total and therefore partial pressure of oxygen Assuming that the sensor is fast enough to track this pressure pulse an unpressurized reading of 50 oxygen will increase to 55 3 if the sensor is subjected to a pressure cycle of 100 cm H O The reading will rise proportionally less for smaller pressures Teledyne Analytical Instruments A 3 Appendices A 5 2 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 For example if an 80 oxygen gas mixture is humidified to saturation at room temperature the resulting gas mixture will contain only 77 5 oxygen Your TED 200 T oxygen monitor accurately measures decreases in the oxygen concentration due to the dilution effects of moisture added to gas mixtures As with all oxygen sensors excessive condensation on the sensing surface of the T 7 will block the diffusion of oxygen to the sensor rendering it inoperative We recommend installing the sensor on the dry side of the breathing circuit at all times Wate
9. read 100 the LO alarm will read 17 The oxygen value will be blank until the unit is calibrated in air Note When new batteries are installed typically the unit is suitable for use immediately after installation 1 Turn the unit off if it is on 2 Open the battery compartment Door swings open left to right 3 Remove the battery holder and take out batteries if any CAUTION Improper installation of the batteries may result in heat dam age to the batteries Note Use alkaline batteries only Other types will give erroneous battery test readings 4 Install 4 AA alkaline batteries into the holder Each battery has its own slot To insure proper polarity place the bottom flat or negative end of the battery in the end of the holder marked the end with the spring Place the top button or positive end of the battery in the end of the holder marked Do this for each battery 5 Snap the battery holder onto the red and black wired snap connector and slide the battery holder into the compartment Be careful not to pinch the wires The holder should seat firmly in the compartment 2 2 AT Teledyne Analytical Instruments Operations 2 6 Close the compartment door The front panel will now display HI ALARM 100 and LO ALARM 17 with a flashing AIR CAL 7 To test the batteries after the unit has been calibrated Press the BATT TEST key once The display should show BATTERY HRS LEFT as 999 2 1 2
10. 1 TED 200 T Overall Maintenance The TED 200 T unit itself requires very little maintenance other than calibration checking and changing the batteries and sensor and cleaning the plastic housing which can be done with isopropyl alcohol Should any part of the instrument malfunction or fail to perform the unit should be removed from service The unit is not user service able 3 2 Battery Maintenance DO Test batteries regularly replace immediately when indicated DO Always use alkaline batteries DO Recalibrate after replacing batteries To test the batteries press the BATT TEST button once The display will show BATTERY HOURS LEFT to a maximum of 999 hours of remaining battery life This value is only a guide Excessive alarm activation will wear down the battery faster than usual Should the remaining battery life reach 24 hours the alarms will activate and the screen will display LOW BATTERY Note The TED 200 T is designed to automatically check its battery life once per hour When setting the HI LO alarms or checking the batteries the unit will freeze the oxygen reading momentarily The minimum detectable change in battery voltage corresponds to an increment of about 50 hours meaning that the battery voltage reading may not change for several hours at a time When the battery voltage becomes low a LOW BATTERY message will flash on the display until the batteries are replaced If there are only 24 hours remaining and th
11. al groups e the T 7 Sensor and e Signal Processing The analyzer uses Teledyne Electronics Technologies Class T 7 oxygen sensor The current output 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 values set by the user and sets off the alarms if it exceeds those values 1 2 1 Sensor The T 7 oxygen sensor is a galvanic cell that is made up of a cathode and anode immersed in electrolyte and packaged in a small plastic container Oxygen entering the sensor stimulates a proportional amount of electrical current between the anode cathode and electrolyte This current is sent to the microprocessor which measures and displays it as a percentage on the LCD screen and then compares it to the alarm standards set by the user If it exceeds alarm limits the alarms are triggered CAUTION The electrolyte used in the T 7 sensor is caustic Do not try to open the sensor assembly Check the sensor regularly for leaks If the sensor is leaking discard of it in a safe manner Do not try to repair it Consult the Material Safety Data Sheet in the Appendix for handling guidelines Attached to the T 7 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 t
12. arm press the ALARM SILENCE key e once for 30 seconds of silence e twice for 90 seconds of silence e three times for 180 seconds of silence e four times to discontinue the override The display will flash ALARM SILENCE and then count down the remaining alarm silence time The unit will continue monitoring and displaying the oxygen concen tration NOTE The accuracy of the alarm Set Points of the TED 200 is the same as that of the O reading as these are both derived mathematically from the A D converter reading NOTE Itis highly suggested not to set low alarm below 18 2 2 Use 2 2 1 Procedure Note Prior to use always test the batteries and alarms check calibration the sensor for leaks and damage and the alarm settings The TED 200 T can be used to monitor gas mixtures for oxygen in two basic modes 1 In breathing circuits or other instances where gases are flowing in tubing circuits 2 Inconfined volumes such as incubators or tents 2 6 g Teledyne Analytical Instruments Operations 2 When monitoring for oxygen in breathing circuits the diverter must be used The diverter should be screwed onto the threaded front end of the T 7 sensor tee adapter either plastic P N A268 or metal P N A283 should be placed into the circuit and the above sensor assembly plugged into the tee adapter CAUTION Check the breathing circuit for leaks Be certain that the circuit downstream of the sensor does not prod
13. e batteries are not replaced the screen will blank except fora LOW BATTERY message The unit will beep and flash continuously NT Teledyne Analytical Instruments 3 1 3 Maintenance and Troubleshooting If the unit is left on after this the LCD display will eventually shut down the red LED will stay lit and the beeper will emit a continuous tone If the batteries are still not replaced the LED and beeper will drain the remaining power and go completely dead If the TED 200 T will not be used for a period of 30 days or more the batteries should be removed prior to storage To replace batteries see chapter 2 section 2 1 1 Remember the unit must be calibrated after the batteries are replaced 3 3 Sensor Maintenance DO check the sensor for damage or leaks before use DO recalibrate after replacing the sensor DON T immerse the T 7 sensor in liquid DON T autoclave the T 7 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 In the event that the sensor has been damaged consult the Material Safety Data Sheet in the Appendix for handling guidelines To replace the sensor see chapter 2 section 2 1 2 3 4 Troubleshooting The TED 200 T provides a variety of built in safety features which prevent instrumen
14. eft in a breathing circuit that has been flushed with pure oxygen If this is not practical the plastic flow diverter should be removed and the sensor left in room air If the oxygen reading continues to drop after each use in nitrous oxide the sensor should be removed from service If the sensor can no longer be calibrated or if there is any sign of electrolyte leakage the sensor should be disposed of in accordance with local regulations and the Material Safety Data Sheet MSDS located in Chapter 4 0 Appendices 2 2 3 Sterilization The T 7 sensor and interconnecting cable may be gas sterilized using low tempera ture ethylene oxide A vacuum must not be drawn on the sensor during the sterilization process The TED 200 T itself cannot be liquid sterilized or autoclaved The surface of the case may be wiped with isopropyl alcohol and allowed to air dry In extreme cases a mild detergent may be used 2 8 g Teledyne Analytical Instruments Operations 2 2 3 Do s and Don ts DO e Read all of the directions before using for the first time e Calibrate every 8 hours or before every use e Visually inspect the sensor for leakage before each use e Use 2 point calibration every time 21 then 100 e Check the HI and LO alarm settings prior to each use e Test batteries regularly replace immediately when indicated e Keep the unit sensor and connections dry or on the dry side of the breathing circuit e Recalibrate
15. ese procedures produce desired results remove the batteries and return the unit to Teledyne for repair NT Teledyne Analytical Instruments 3 5 3 Maintenance and Troubleshooting 3 6 AT Teledyne Analytical Instruments Appendices Appendices A 1 Specifications Range 0 100 oxygen Accuracy 2 of full scale at constant temperature Response Time 90 in less than 8 seconds typically 6 8 seconds at 25 C Display Digital LCD with battery life indication Battery Life Approximately 1 000 hr continuous use in a non alarm condition System Power 4 AA alkaline batteries Sensor Type Class T 7 System Enclosure 7 W x5 Dx 2 1 2 H 178 mm x 127 mm x 63 5 mm Weight Less than 2 lb Less than 1 kg Cable Length Retracted 2 ft Extended 10 ft Storage Temp 10 30 C continuous 0 50 intermittent C Operating Temp 0 40 C Stability Less than 1 O over an 8 hour period at constant pressure and temperature O level alarm ranges Hi alarm 18 to 100 Percent Low alarm 17 to 100 percent O level alarm accuracy Alarm thresholds digitally stored and alarm effectivity is QTY digitally compared against the value calculated by the microprocessor Hence the accuracy of the alarms is the same as the accuracy of the unit as specified above Warm up time Typically 20 minutes or less A 2 Spare Parts List PART NO DESCRIPTION A51327 Micro Fuel Cell T 7 with flow diverter P N A50057 B99 AA s
16. esflurane were vaporized into a stream of 30 oxygen 70 nitrous oxide and the resulting drops in oxygen level after an exposure of approxi mately two hours were noted Exposures in excess of two hours will produce slightly greater error The errors listed are typical for all oxygen sensors such as the T 7 Exposing the sensor to air or gases that do not contain anesthetic agents for a period of time equal to or greater than the exposure interval will eliminate the reading error in most cases 47 Teledyne Analytical Instruments 2 7 2 Operations Gas or Vapor Level Balance Mixture of 30 O 70 N 0 except where noted Oxygen Gas or Vapor Test Level Reading Error Helium 50 balance O 0 Nitrous Oxide 80 balance O 0 Carbon Dioxide 10 balance O 0 Halothane 4 lt 1 5 O Enflurane 5 lt 1 5 O Isoflurane 5 lt 1 5 O Sevoflurane 5 lt 1 5 O Desflurane 15 lt 1 5 O Errors are approximate and may vary based on exposure times and concentrations These performances meet or exceed the requirements of ISO 7767 1997 E CAUTION The TED 200 T should not be used in the presence of flam mable anesthetics such as diethyl ether or cyclopropane 2 2 2 2 Care after use in nitrous oxide CAUTION The T 7 sensor should not be left in nitrous oxide mixtures any longer than absolutely necessary After exposure to nitrous oxide mixtures the sensor should be left in 100 oxygen overnight e g l
17. evable by the monitor is only as good as the procedure used to calibrate it Note Never calibrate the unit in humidified gas as water vapor makes the oxygen concentration appear lower than it really is See Appendix Humidity 2 1 4 Alarms 1 To set the HI alarm Press the SET HI ALARM key once Within 5 seconds press the yellow UP or DOWN arrow keys until the screen displays the desired value 47 Teledyne Analytical Instruments 2 5 2 Operations NOTE The HI alarm may be defeated by setting the limit one step above 100 The display will show HI ALARM OFF and flash ALARM DEFEATED 2 To set the LO alarm Press the SET LO ALARM key once Within 5 seconds use the yellow UP and DOWN arrow keys to select a value A safety feature will not allow you to select a LO alarm value less than 17 NOTE The TED 200 T is designed to prevent crossing of HI LO alarm settings If you try to make the LO alarm higher than the HI alarm it will push the HI alarm setting up as you continue to raise the LO alarm setpoint This also applies when attempting to set the HI alarm lower than the LO alarm 3 To test the alarms press the ALARM TEST key twice The display will show ALARM TEST The oxygen reading on the display will sequence to the HI alarm value and activate the audible visible alarm for 1 2 seconds It will then sequence down to the LO alarm value and activate the audible visible alarm for 1 2 seconds 4 To override the audible al
18. ize alkaline battery Teledyne Analytical Instruments A 1 Appendices 1 B384 1 C885 1 A268 Battery holder Cable assembly Tee adapter 22 mm A 3 Optional Accessories B34102 A51589 A51588 C53790 A284 A274 A283 Ro pb al A Di lo pi Mounting clamp T 7 adapter cap female 22 mm T 7 adapter cap male 22 mm Calibration assembly Universal adapter set for pediatric circuits 15mm Tee adapter autoclavable Tee adapter metal Schematics are available on request A minimum charge is applicable to spare parts orders Note Orders for replacement parts should include the model number serial number and range of the analyzer for which the parts are intended ORDERS SHOULD BE SENT TO TELEDYNE ELECTRONIC TECHNOLOGIES Sensor Technologies 16830 Chestnut Street City of Industry CA 91749 1580 TELEPHONE FAX TECHNICAL SUPPORT 888 789 8168 626 934 1500 626 961 9221 626 961 2538 626 934 1651 626 934 1673 TWX 910 584 1887 TDYANLY COID or your local representative A Teledyne Analytical Instruments Appendices A 4 Repair Service PLEASE READ CAREFULLY In the event that your TED 200 T Portable Oxygen Monitor needs servicing the following steps will help to ensure that the repair request is processed promptly Contact your authorized TET Sensor Technologies distributor or factory for return instructions Do not ship your monitor without first obtaining auth
19. ledyne Analytical Instruments Operations 2 Operations 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 Electronic Technolo gies Sensor Technologies Note This equipment is internally powered 2 1 Setup The TED 200 T is suitable for use in many medical applications The unit can be used on a table top or mounted on a pole using a mounting bracket P N B34102 To set up and use your TED 200 T 1 Install the batteries 2 Install the sensor 3 Calibrate the unit 4 Set the alarms The front display touch panel is designed to insure that accidental touching or bumping of the panel will not reset any calibrations or settings Each button used in a sequence must be pressed within five seconds of each other and the CAL ALARM TEST and OFF keys must be pressed twice in order to activate them The ON OFF key needs to be pressed once in order to turn on the TED 200 T but must be pressed twice to turn it off 47 Teledyne Analytical Instruments 2 1 2 Operations Sensor cable receptacle Battery compartment Figure 2 TED 200 T rear view 2 1 1 Battery Installation or Replacement Note Four AA alkaline batteries must be installed in the unit before the TED 200 T will operate Each time new batteries are installed the display will flash AIR CAL The HI alarm will
20. nit to Teledyne for repair Replace batteries Increase the distance be tween the unit and any sources of radio frequency interference Relocate the sensor cable as conve niently as possible Try dif ferent positions Maintenance and Troubleshooting 3 Symptom Alarm sounds flashes con tinually but keys are func tioning normally No display Unit reads 00 and alarms sound flash continually Reading drifts over 2 3 over a period of 3 4 hours No response when pushing a front touch panel button All other functions appear normal Why A B ow gt B Reading outside alarm lim its Sensor output low activat ing internal safety system Batteries expired Bad battery connection Unit not calibrated after the batteries were reconnected Sensor not plugged in Sensor cable not plugged in or bad connection Intermittent cable connec tion Intermittent sensor connec tion Some TED 200 T keypads require two successive strokes within a 5 second period for activation See Chapter 1 0 Introduction or Chapter 2 0 Set Up What to Do A B ow gt Reset alarm levels Remove excess conden sate recalibrate or replace sensor Check replace batteries Check battery connections Calibrate Check and reconnect then calibrate Replace cable or sensor depending upon location of bad connection Replace cable Replace sensor NOTE In the event that none of th
21. o 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 1 2 6 Teledyne Analytical Instruments Introduction 1 CAUTION Remove and save the diverter when the sensor is used in confined volume applications 1 2 2 Signal Processing The electrical current developed in the sensor is sent to the microprocessor for processing Processing includes amplification conversion to digits and comparison to alarm standards Using a microprocessor allows for easier setting of alarms auto matic calibration and self diagnosis When the battery runs low or the unit needs recalibration the TED 200 T tells you so The oxygen level is calculated and then displayed on the liquid crystal display LCD on the front panel User programmed high and low alarm setpoints are stored in random access memory RAM which resides within the microprocessor The oxygen level calculated by the microprocessor is compared to these setpoints and an alarm activated if necessary The audio alarm itself can be manually bypassed for a set amount of time by the user Pressing the ALARM SILENCE key will stop the alarm in increments of 30 90 and 180 seconds The alarm can also be turned back on after silencing LE Teledyne Analyticalinstruments 1 3 1 Introduction 1 4 Te
22. orization Include a copy of the sales invoice or other proof of purchase date Warranty service may be denied if no proof of purchase is included It is your responsibility to pay shipping charges to Teledyne Electronic Technolo gies If the unit is under warranty the serviced or replaced monitor will be returned to you postage prepaid NOTE Either the TED 200T Oxygen Monitor and or the T 7 Oxygen Sensor can be shipped using normal air and ground transportation No special environmental conditions for transport and or storage are required Monitors and sensors damaged by accident or misuse are not covered by the warranty In these situations service charges will based on time and materials A 5 Environmnetal Effects A 5 1 Pressure Virtually all gas sensors and monitors measure the partial pressure not the percentage of the gas that they sense The only time that these instruments can accu rately read percentages is when the total pressure does not vary over time between calibration and use This is why it is important to calibrate the TED 200 T oxygen sensor at regular intervals It is recommended that the unit be calibrated prior to each use or every 8 hours When the sensor is connected to a ventilator circuit the alternating breathing pressure cycles generated by the ventilator will be sensed as an increase in the oxygen percentage especially if the sensor is fast enough to sense the changes as is the T 7 In reality the
23. ption of the following From 26MHz to 250MHz the display was unstable When interference was removed the equipment under test recovered From 250MHz to 1000MHz the display was stable 24 Teledyne Analytical Instruments iii Table of Contents Introduction A ci ses O chess wall cdg tats 1 1 A a Re Sen a Le eres Soueiieds 1 2 A ER nt nn tt 1 2 1 22 S1enal Processing see A ta 1 3 Operations ZA E AE 2 1 2 1 1 Battery Installation or Replacement ooonoccnnncnnnnnnnocinocnninnnnnnns 2 2 2 1 2 Sensor Installation or Replacement ooooonnccnnccnnncnnnccnconcnoncnannos 2 3 23 CARBONE Sn ci iii 2 4 A A M SR RE ce ns A Re te 2 5 22a MUSE ns see ne ales ota Ne RTA 2 6 2 21 A ST ea 2 6 22 2 Aesthete AS ASES ii dent ne o te ee 2 7 2 2 2 1 Gasses That Induce Reading Error ooooconcnocccnoncccnnonccinnnnnnns 2 7 2 2 2 2 Care After Use in Nitrous Oxide asian tu 2 8 A A R O ce 2 8 2 3 DOSK DO nn a E rs 2 9 Maintenance and Troubleshooting 3 1 TED 200 T Overall Maintenance oococccooccnonnnonnnnnnncnnncconcconnnrnnnnnnnnons 3 1 3 2 Battery Main enanc ieie a a a gid deities 3 1 BeBe SOUS OR Ma ty E E E E E E 3 2 54 lt Troubleshooune it id 3 2 Appendices AL SD IICANONS nn A LE rude REA A 1 A2 Spare Parts Lit cei Al al ores A 1 AS Optional Accessories 00 A A A eee A 2 Aa sRepait Servite vec A Ai A 3 Aldo Environmental Effects ia nan ane A 3 Adal Pressure a D nn nets A 4 A S 2 O A 4 AS Temperature it io
24. r condensate on the exposed cable contacts at the rear of the sensor may affect the oxygen reading and should be removed by shaking out the condensed water and allowing the sensor to air dry A 5 3 Temperature The T 7 oxygen sensor adjusts for ambient temperature changes in the range of 0 40 C 32 106 F Since the thermistor that compensates for these changes is located in the rear of the sensor assembly it is important that gas mixtures flowing over the front of the sensor be at room temperature Reading errors may occur if hot gases from a heated humidifier are directed past a sensor teed into a breathing circuit A small thermal tracking error may be encountered in application areas where the entire sensor assembly is placed in the gas mixture to be analyzed e g incubators No adjustments should be made during this period about 1 to 2 hours since this error will be eliminated when both the thermistor and sensing electrode have had sufficient time to come to thermal equilibrium A 5 4 Discrepancy in Readings The TED 200 T should never be used as a primary monitoring device It is intended to be used as a secondary oxygen monitor meaning that it is intended to verify the accuracy of and check the oxygen concentration leaving another oxygen mixing device or primary life support system i e a blender or anesthesia machine Whenever there is a significant difference in the oxygen readings between the primary and second ary monito
25. rotate it until it slides in easily 3 Plug the other end of the coiled cable into the receptacle located on the right hand side panel of the TED 200 T This jack will only fit one way so do not force it Note If the TED 200 T is used for diffusion sampling i e incubators tents etc the plastic flow diverter must be removed from the T 7 sensor If the sensor is used in breathing circuits etc the diverter must be used as shown in Figure 3 2 1 3 Calibration After installation of the batteries the display will show HI ALARM 100 and LO ALARM 17 an AIR CAL message will flash and the oxygen reading will be blank An air calibration must be performed before an oxygen reading will display 1 For first time and routine maintenance calibrations make sure that the sensor and sensor cable have been installed correctly and that the sensor is in room air uncontaminated with excess oxygen or other gases For routine calibrations set the LO and HI alarm limits to 17 and OFF respectively 2 4 g Teledyne Analytical Instruments Operations 2 2 Ifcalibrating for the first time press the CAL key once After initial calibration press the CAL key twice CAUTION It is very important that air 21 oxygen calibration be performed every time the batteries are disconnected or replaced in the TED 200 T The microprocessor cannot perform its task properly without this data After 10 seconds a reading of 20 22 oxygen will be di
26. rs the discrepancy must be resolved immediately The information obtained from the TED 200 T should never be used to make adjustments to the primary life support system but should only be used as an indication that the primary device may require service and or calibration A 4 a Teledyne Analytical Instruments Appendices The BATT TEST control of the TED 200 T immediately determines if the batteries need replacing The TED 200 T should momentarily be removed from the application area and be checked for calibration and sensor integrity If the TED 200 T can be calibrated the unit can be assumed to be in good working order and capable of providing readings to specification If after reinstalling the TED 200 T the discrepancy in oxygen readings persists the problem is most likely elsewhere i e flow blockage primary device error etc Further investigation should be made until the discrepancy in readings is resolved If it is found that replacing the sensor and or batteries does not give proper calibration results the troubleshooting section of this manual should be consulted NOTE The MSDS on this material is available upon request through the Teledyne Environmental Health and Safety Coordinator Contact at 626 934 1592 Teledyne Analytical Instruments A 5 Appendices A 6 A Teledyne Analytical Instruments Appendices A 6 Material Safety Data Sheet Section Product Identification Produc
27. s do not present a health hazard The following information is given as a guide in the event that a cell leaks Protective clothing Rubber gloves chemical splash goggles Clean up procedures Wipe down the area several times with a wet paper towel Use a fresh towel each time Protective measures during cell replacement Before opening the bag containing the sensor cell check the sensor cell for leakage If the sensor cell leaks do not open the bag If there is liquid around the cell while in the instru ment put on gloves and eye protection before removing the cell Disposal Should be in accordance with all applicable state local and federal regulations NOTE The above information is derived from the MSDS provided by the manu facturer The information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide Teledyne Elec tronic Technologies shall not be held liable for any damage resulting from handling or from contact with the above product Teledyne Analytical Instruments A 9
28. splayed CAL IN 100 will flash for a period of 5 seconds during which time the reading of 20 22 will con tinue This is a reminder that a 100 oxygen calibration should be performed to achieve maximum accuracy Note When calibrating in 100 oxygen it is recommended that the plastic flow diverter and tee adapter be installed into a flowing circuit with pure dry oxygen flowing past the sensor assembly An accessory calibration assembly P N C53790 is available from TET Sensor Technologies for use where breathing circuits are not normally used 3 Place the sensor in 100 oxygen place the sensor in a small plastic bag and flush with pure dry oxygen and allow the reading to stabilize Wait until the reading is stable for at least 10 seconds If the reading is other than 100 press the CAL key twice After 15 seconds a reading of 99 101 will display Note For the specified accuracy in monitoring any oxygen level above 30 40 a 100 calibration must be performed after the 21 air calibration DO NOT calibrate in air subsequent to the 100 calibration as calibrating in air again will cancel the previous 100 calibration The 100 calibration may be repeated as many times as desired without affecting the air calibration It is important to perform the calibration carefully and thoroughly making certain that uncontaminated calibration gases are used and that stable readings are achieved before the calibration is locked in The accuracy achi
29. st be allowed to stabilize in 100 oxygen before calibration is at tempted or the oxygen con centration at the sensor is less than 100 B Astable low reading had not been achieved during air calibration NT Teledyne Analytical Instruments good sensor if this fails see symptom Reading drifts over 2 3 Wait 1 2 minutes or until the oxygen concentration reading is stable push the CAL key twice wait for cali bration sequence to finish Make sure that at least 12 30 cm of tubing is at tached to the exhaust side of the tee adapter to pre vent backfilling O flow rate should not exceed 5 l min Prevent dilution of gas with H O vapor by removing hu midifiers nebulizers etc Check for leaks or open cir cuits Repeat air calibration be sure to allow enough time for all O to diffuse remove plastic flow diverter Repeat 100 calibration Replace sensor Remove T 7 sensor from tee adapter and unscrew the plastic flow diverter Us ing absorbent tissue or cot ton swab gently wipe off sensing surface inside threaded portion of sensor assembly Relocate unit away from sources of RFI 3 3 3 Maintenance and Troubleshooting Symptom The oxygen reading fluctu ates or appears to be incor rect The unit appears to have a momentary or intermittent condition which causes the alarms to activate unit cannot be silenced and all keys are not functioning Why Like all O sensors
30. t use when a fault or incorrect calibration procedure is detected When a unit repeatedly displays the messages REPLACE SENSOR or SEE TROUBLESHOOT sounds flashes the alarms continuously or refuses to turn on it may be an indication of an erroneous cali bration an intermittent or faulty connection an expired sensor or a low battery To deter mine where the difficulty lies refer to the following guidelines NOTE The TED 200T Service Manual P N SMC41901 02 is available from the factory and contains circuit diagrams test procedures and other informa tion which will assist qualified technical personnel in repairing the Monitor 3 2 AT Teledyne Analytical Instruments Maintenance and Troubleshooting 3 Symptom Why What to Do A new sensor must be allowed to stabilize prior to A new sensor will not calibrate HR i A Wait 1 2 minutes and try in air The TED 200 T display again flashes REPLACE SENSOR calibration B Oxygen concentration at the or SEE TROUBLESHOOT sensor is significantly higher after a second attempt to than 21 Take the instru calibrate ment to a well ventilated area and repeat the calibra tion C Try calibrating a known The unit successfully cali brates at 21 but will not calibrate at 100 The dis play is flashing REPLACE SENSOR or SEE TROUBLE SHOOT The TED 200 T does not react to changes in oxygen concen tration or the readings are unstable and drifting A The sensor mu
31. t Name Micro Fuel Cells Mini Micro Fuel Cells all classes Super Cells all classes except T SF Oxygen Sensors all classes Manufacturer Teledyne Electronic Technologies Analytical Instruments Address 16830 Chestnut Street City of Industry CA 91748 Phone 626 934 1500 Technical Support 626 934 1673 Environment Health and Safety 626 934 1592 Date Prepared 08 26 98 Section Il Physical and Chemical Data Chemical and Common Names CAS Number Melting Point Range Boiling Point Range Specific Gravity pH Solubility in Water Percent Volatiles by Volume Appearance and Odor Lead Pb pure KOH 1310 58 3 Pb 7439 92 1 KOH 10 to 0 C 100 to 115 C 1 09 20 C gt 14 Completely soluble None Colorless odorless solution 4 Teledyne Analytical Instruments Potassium Hydroxide KOH 15 w v Pb 328 C 1744 C 11 34 N A Insoluble N A Grey metal odor less Appendices Section IIl Physical Hazards Potential for fire and explosion The electrolyte in the Micro Fuel Cells is not flam mable There are no fire or explosion hazards associated with Micro Fuel Cells Potential for reactivity The sensors are stable under normal conditions of use Avoid contact between the sensor electrolyte and strong acids Section IV Health Hazard Data Primary route of entry Exposure limits OSHA PEL ACGIH TLV Effects of overexposure Ingestion Eye
32. the T 7 detects the changes in the partial pressure of O See Appendix Pressure The TED 200 T is equipped with an elec tronic watch dog which monitors the circuitry within the unit for potential faults and may activate the alarm and disable key functions The watch dog can be reset only by disconnecting the batteries Several conditions can activate the watch dog Dropping the unit poor battery connections and radio frequency interfer ence are the most common causes 3 4 g Teledyne Analytical Instruments What to Do A During calibration make sure there are no restric tions on exhaust side of sensor If the reading changes with flow the sen sor is pressurized or there may be a leak in the sys tem If a high degree of accuracy is desired or the concentra tion of O is in excess of 40 calibration with 100 is recommended If humidified gas is used to ventilate the patient water vapor actually dilutes the gas See Appendix Humid ity Temperature If a blender is used check its calibration See Appen dix Discrepancy in Read ings Disconnect the batteries and inspect the contacts and wires for damage or corrosion Bend the battery pack and connector con tacts slightly if necessary Reconnect the batteries and calibrate the unit If the unit appears to function prop erly check the alarms and settings If the alarm contin ues or the unit does not function return the u
33. uce any back pressure or restriction to flow or errors in readings will result When monitoring for oxygen in confined volumes such as incubators hoods etc the flow diverter must be removed from the T 7 sensor so that it does not interfere with the rapid exchange of gases to and from the sensing surface of the T 7 CAUTION Failure to remove the diverter in these application areas will result in a marked lowering of the response time of the sen sor The T 7 sensor can be placed or hung inside incubators tents etc When it is necessary to thread the cable through a small hole in order to gain access to the inside of a chamber the cable should be disconnected at the sensor threaded through the hole and reconnected inside the chamber A calibration check may be conducted at any time to assure proper operation Remove the diverter and expose the sensor to room air and verify that the reading is 20 22 Expose the sensor to 100 oxygen preferably using the diverter and tee adapter in a flowing circuit and verify that the reading is 99 101 2 2 2 Anesthetic Gases 2 2 2 1 Gases that induce reading error When using the T 7 sensor in the presence of anesthetic gases such as Halothane the oxygen reading may fall see the table below The magnitude of this error will depend upon the level of oxygen and the duration of exposure The anesthetic agents listed in the following table Halothane Enflurane Isoflurane Sevoflurane and D
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