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Teledyne MX300 Operating/Service Instructions Manual Download Page 43

Portable Oxygen Monitor  

Appendix 

 

 

 Teledyne 

Analytical 

Instruments 

43

 

Appendix 

A.1 Specifications 

 Range:

   0-100% oxygen 

 Accuracy:

  +2% of full scale (at constant temperature 

and pressure) 

 Response 

Time:

   90% in less than 8 seconds at 25 °C 

 Battery 

Life:

  Approximately 2000 hr. continuous use in 

a non-alarm condition 

 System 

Power: 

3 AA alkaline batteries. 

 Sensor 

Type: 

Class R17MED 

 

Expected Life:

  36 months in air. (10 months when 

continuously exposed to 100% oxygen)

 

 Dimensions:

  2.5" W × 1.25" D × 4.5" H  (66 mm x 33-

mm × 111.5 mm) 

 Sensor 

Cable:

   Retracted: 2 ft / Extended: 10 ft.  

                    Storage Temp.

  10-30 °C (continuous), 5-50 °C  

(Intermittent)   

 

Operating Temp:

   0-40 °C 

  

 Alarm 

ranges:

  HI alarm: 19 to 100 Percent 

                  

   LO alarm: 18 to 99 % 

                 Alarm accuracy:

   Alarm thresholds are digitally stored and 

alarm affectivity is 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. 

 

 

 

Summary of Contents for MX300

Page 1: ...TRUCTIONS FOR MX300 I PORTABLE OXYGEN MONITOR 0086 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 P N M75707 REV 1 ECO 04 0088 ...

Page 2: ...ection 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 ...

Page 3: ...ntroduction 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 y...

Page 4: ... 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 S...

Page 5: ...ns 11 1 4 Applications 12 1 5 Theory of Operation 12 1 5 1 Sensor 13 1 5 2 Signal Processing 13 Operation 15 2 1 Setup 15 2 1 1 Sensor Installation or Replacement 16 2 1 2 Mounting 18 2 1 2 1 V Mount Adapter Installation 18 2 1 2 2 Universal Mounting Clamp Installation 18 2 1 3 Battery Installation 19 2 1 3 Calibration 20 2 1 4 Alarms 22 2 1 5 Output 0 1 VDC or RS232 23 2 2 Use 25 2 2 1 Procedure ...

Page 6: ...vice Manual 33 3 1 General Service Information 33 3 2 Overall Maintenance 33 3 3 Battery Maintenance 33 3 4 Sensor Maintenance 34 3 5 Calibration 34 3 6 Alarms 35 3 7 Gas Sampling 35 3 7 1 Humidity 35 3 7 2 Temperature 35 3 7 3 Pressure 36 3 7 4 Discrepancy in Readings 36 3 8 Troubleshooting 37 3 9 Watchdog 40 3 10 Other Problems with the Instrument 41 3 11 Return Authorization for Service 42 Appe...

Page 7: ... 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 ...

Page 8: ...MX300 I Teledyne Analytical Instruments viii List of Tables Table 2 1 Oxygen Reading Error in a Mixture of Anesthetic Gas 29 Table 3 1 Troubleshooting 37 Table 3 2 Error Codes 40 ...

Page 9: ...ned to monitor up to 100 oxygen concentration in medical gas mixtures Because they are microprocessor based the MX300 I 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 I front face interface is shown in Figure 1 1 Figure 1 1 MX300 I...

Page 10: ...et 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 I units are built to meet or exceed regulatory and industry standards for use as a medical device The instruments are d...

Page 11: ...ence 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 conc...

Page 12: ...eonatal populations The instruments may be used in verifying oxygen concentrations in gas mixtures used in Anesthesia Respiratory Therapy Neonatal Care 1 5 Theory of Operation The MX300 I 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 ...

Page 13: ...tely 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 ...

Page 14: ... 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 pre...

Page 15: ...plications 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 I 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...

Page 16: ...ITH SKIN IF IT DOES FLUSH AFFECTED AREA WITH WATER DO NOT ATTEMPT TO OPEN OR REPAIR THE SENSOR WARNING THE SENSOR ALSO CONTAINS LEAD LEAKING OR EXHAUSTED SENSORS SHOULD BE HANDLED AND DISPOSED OF IN ACCORDANCE WITH LOCAL REGULATIONS CONTACT TELEDYNE FOR THE MATERIAL SAFETY DATA SHEET 2 Plug one end of the coiled cable into the jack receptacle on the back end of the R17MED sensor and secure in plac...

Page 17: ...Monitor Note When the MX300 I instrument is used for diffusion sampling i e incubators tents etc the plastic flow diverter must be removed from the R17MED sensor If the sensor is used in breathing circuits etc the diverter must be used as shown in Figure 2 3 Figure 2 3 Mounting the Sensor in the Tee Adapter ...

Page 18: ...the hinged latch at the bottom of the cover then slide the adapter plate into grooves provided in rear case Replace the battery compartment door and secure door latch See Figure 2 4 Note The door latch is a tight fit onto the battery cover Use a coin to gently pry up the latch Figure 2 4 V Mount Adapter Installation 2 1 2 2 UNIVERSAL MOUNTING CLAMP INSTALLATION The Universal Mounting Clamp is supp...

Page 19: ... coin to pry up the latch that secures the battery compartment door Remove the battery compartment door CAUTION IMPROPER INSTALLATION OF THE BATTERIES MAY RESULT IN DAMAGE TO THE UNIT AND BATTERIES Note Use alkaline batteries only Other battery types will produce erroneous battery test readings 3 Install 3 AA alkaline batteries into the holder as shown in Figure 2 6 Each battery has its own slot T...

Page 20: ...a bar graph of the remaining life to the batteries In the case of fresh batteries it should illuminate all 5 segments from the left to the right end of the bar 2 1 3 Calibration The MX300 I should be calibrated before each use and every 8 hours to maintain accuracy Whenever new batteries are installed or removed for any reason the oxygen monitor defaults to the calibration mode with the LCD displa...

Page 21: ...ration is complete the LCD will display the gas value Press the LOCK UNLOCK key to save the calibration data Note The MX300 I can only be calibrated using 100 oxygen or room air 20 9 Improper calibration or use of other gas concentrations will activate the SENSOR indicator To repeat the calibration press the LOCK UNLOCK key and press the CAL key 6 Remove the sensor from the oxygen supply and confi...

Page 22: ...ttings The unit is now ready for use 2 1 4 Alarms Note Before attempting to change the alarms it is necessary to unlock the control keys by pressing the LOCK UNLOCK key When pressed the display will start flashing To set the alarms on the MX300 I monitor see Figure 2 8 1 To set the HI alarm Press the HI ALARM SET key once Press the UP and DOWN arrow key until the desired value is displayed in the ...

Page 23: ...blinks slowly on the LCD below the oxygen readout 2 1 5 Output 0 1 VDC or RS232 The MX300 I provides signal outputs for use with recorders and computers The instruments are supplied standard with a 0 1 VDC output An optional 0 1 VDC Interface Cable P N B 75554 is available from Teledyne for this purpose To connect the analyzer to an analog recording device 1 Insert one end of the interface cable i...

Page 24: ...se together 2 Remove the rear case section leaving the PCB in the front half of the case 3 Remove jumper at position JP3 and reinstall it at position JP7 4 Replace the rear cover and secure in place with five screws Install the batteries and recalibrate per Section 2 1 3 CAUTION RECORDER RS232 OUTPUT SIGNAL SHOULD ONLY BE CONNECTED TO AN EN60601 1 IEC60606 1 APPROVED DEVICE To reconfigure the anal...

Page 25: ...R17MED sensor A tee adapter 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 See Figure 2 1 CAUTION CHECK THE BREATHING CIRCUIT FOR LEAKS BE CERTAIN THAT THE CIRCUIT DOWNSTREAM OF THE SENSOR DOES NOT PRODUCE ANY BACKPRESSURE OR RESTRICTION TO FLOW ERRORS IN READINGS WILL RESULT IF THIS IS NOT FOLLOWED THE OXYGEN SENSOR ...

Page 26: ...nders inactive all keys except the ALARM SILENCE and BATT TEST keys Pressing LOCK UNLOCK a second time unlocks the keypad 2 3 Gas Sampling 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 o...

Page 27: ...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 accurately read percentages is when the total pressure does not vary over time between calibrations and use This is way it is important to calibrate the MX300 I oxygen sensor at regular intervals It is recommended that the unit be calibrated prior to each...

Page 28: ...made until the discrepancy in readings is resolved The troubleshooting section of this manual may provide additional assistance in locating the problem Note The MSDS on this material is available upon request through the Teledyne Environmental Health and Safety Coordinator Contact at 626 934 1592 2 3 5 Anesthetic Gases 2 3 5 1 GASES THAT INDUCE READING ERROR When using the R17MED sensor in the pre...

Page 29: ...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 CAUTION THE MX300 I SHOULD NOT BE USED IN THE PRESENCE OF FLAMMABLE ANESTHETICS SUCH AS DIETHYL ETHER OR CYCLOPROPANE CAUTION THE MX300 I OXYGEN SENSOR AND ASSOCIATED HARDWARE ARE NON STERILE DEVICES DO NOT AUTOCLAVE THE ...

Page 30: ...evices The oxygen analyzer oxygen sensor and sensor interconnection cable may be cleaned by wiping the surfaces with isopropyl alcohol or a mild cleaning solution Before placing instrument in operation make sure all surfaces are dry and unit is properly calibrated When cleaning do not allow liquids or moisture to enter the instrument or sensor internal cavities Do not allow the cleaning solution t...

Page 31: ...e tee adapter Remove and save the plastic flow diverter when using the sensor in non flowing applications incubators tents etc Perform an alarm test before each use press the ALARM TEST key Clean the case with isopropyl alcohol or mild detergent only DON T Use this monitor if you suspect any malfunction Use the instrument in the presence of flammable gases Use anything but alkaline batteries Autoc...

Page 32: ...se cleaning agents or liquids in the cable receptacles or around the battery compartment Place the unit itself in a water vapor saturated environment Expose the LCD to excessive sunlight Expose the unit to a condensing water environment such as a mist tent ...

Page 33: ...instrument If a problem arises with either of these models that cannot be corrected by recalibration changing the batteries or replacing the sensor as described in the users manuals contact your locale Representative or Teledyne for assistance When returning the unit to the factory for repair or replacement See Section 3 11 for instructions on obtaining a Return Merchandise Authorization RMA numbe...

Page 34: ...r 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 In the event that the sensor has been damaged Contact your locale Representative or Teledyne to receive a c...

Page 35: ...ffects of moisture added to gas mixtures As with all oxygen sensors excessive condensation on the sensing surface of the R17MED 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 3 7 2 Temperature The R17MED oxygen sensor adjusts for ambient temperature changes in the range of 0 40 C 32 ...

Page 36: ...of oxygen A hundred centimeter of water pressure pulse will produce a 0 11 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 un pressurized reading of 50 oxygen will increase to 55 3 if the sensor is subjected to a pressure cycle of 100cm H2O The reading will rise proportionally less for smalle...

Page 37: ...lty connection between the sensor and the unit or an expired or faulty sensor To determine where the difficulty lies refer to the following guidelines in Table 3 1 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...

Page 38: ...ng SENSOR The unit has detected a fault in the signal from the sensor Sensor has expired The sensor has been exposed to a gas containing little or no oxygen A Check sensor cable connections and make sure they are completely inserted into the mating connector and the capture nut is firmly in place B Expose the sensor in 100 O2 and check calibration C The sensor output has fallen to a level where it...

Page 39: ...rmation A Disconnect the batteries and inspect the contacts for corrosion Reconnect the batteries If the unit functions properly calibrate the unit and reset the alarm values B Try a new set of batteries C Increase the distance between the unit and any source of radio frequency interference The sensor cable is a prime source of pickup as it can act like an antenna Relocate the sensor cable and if ...

Page 40: ...eration or if the unit is subjected to extreme shock In some cases an additional digit is used in the error code to supply additional information For example the error code 6 and 7 are followed by another digit listed as N in Table 3 2 The error code 65 would indicate that a key is stuck and this key is the Silence key In addition to supplying visual error codes the audio device will beep a number...

Page 41: ... the type of digital to analog failure 0 Measurement 1 High Test 2 Low Test 3 Offset Cal 4 Gain Cal 3 10 Other Problems with the Instrument Most other problems arise from either mechanical damage from the instrument falling from a bench or table or electronic component failure In these units repair or troubleshooting the PCB or individual component on the board is not feasible It requires speciali...

Page 42: ...strument to Teledyne Customer Service If an error code is indicated on your monitor record the number and report it to the Customer Service Department at the address below 3 11 Return Authorization for Service For any service beyond sensor and battery replacement the instrument must be returned to the factory A return merchandise authorization RMA number must be obtained from Teledyne Analytical I...

Page 43: ... R17MED Expected Life 36 months in air 10 months when continuously exposed to 100 oxygen Dimensions 2 5 W 1 25 D 4 5 H 66 mm x 33 mm 111 5 mm Sensor Cable Retracted 2 ft Extended 10 ft Storage Temp 10 30 C continuous 5 50 C Intermittent Operating Temp 0 40 C Alarm ranges HI alarm 19 to 100 Percent LO alarm 18 to 99 Alarm accuracy Alarm thresholds are digitally stored and alarm affectivity is digit...

Page 44: ...1 B 74466 Base assembly A 3 Optional Accessories 1 A50057 R17MED flow diverter 1 CP2345 Universal Pole Mounting Clamp 1 CP2344 V mount Pole Clamp 1 B647 V mount Wall Adapter 1 A51589 Sensor adapter cap female 22 mm 1 A51588 Sensor adapter cap male 22 mm 1 C53790 Calibration assembly 1 A284 Universal adapter set for pediatric circuits 15mm 1 A274 Tee adapter autoclavable 1 A283 Tee adapter metal 1 ...

Page 45: ...ude the part number if available and the model and serial number of the instrument for which the parts are intended 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 ...

Page 46: ...Appendix MX300 I Teledyne Analytical Instruments 46 BLANK ...

Page 47: ...fusion sampling 17 digital output 24 dilution effects 26 35 display 9 diverter 13 17 25 30 drift 27 35 electrolyte 13 error 28 29 error code 40 FCC ii features 11 front panel 9 front panel MX300 I 9 galvanic cell 13 HI alarm 43 defeating 22 humidity 26 35 intended use warning iv interface 9 jumper 24 linear 10 23 LO alarm 43 LOCK UNLOCK button 15 maintenance 33 moisture 26 35 mounting bracket 15 n...

Page 48: ...are parts listing 44 specifications 43 stand 15 standards 10 storage 34 tables listing viii tee adapter 25 Teledyne address 42 45 temperature 26 35 temperature tracking 27 35 thermal equilibrium 27 36 thermal tracking error 27 35 thermistor 26 35 troubleshooting 37 type B equipment i ventilator 27 36 warranty ii watchdog circuit 40 water vapor 22 website address 42 45 ...

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