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Portable Oxygen Monitor

Teledyne Analytical Instruments

OPERATING & SERVICE INSTRUCTIONS FOR

AD300

ORTABLE

XYGEN

NALYZER

MD300

ORTABLE

XYGEN

ONITOR

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 M/AD/MD300

06-23-2010

Содержание AD300

Страница 1: ...FOR AD300 PORTABLE OXYGEN ANALYZER MD300 PORTABLE OXYGEN MONITOR 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 M AD MD300 06 23 2010 ...

Страница 2: ...which are designed to provide reasonable protection against such interference when installed in a commercial and residential environment Operation of this equipment in a residential area may cause interference in which case the user at his own expense will be required to take whatever measures may be required to correct the interference Note The above statement is required by the FCC for any devic...

Страница 3: ...um information you need to use the instrument immediately Chapter 1 An introduction to the monitor and its components features and applications Chapter 2 Step by step set up procedures and information Chapter 3 A guide for daily operational maintenance and troubleshooting Appendix Specifications and available spare part options for the monitor and detailed application considerations to aid in trou...

Страница 4: ...ns 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...

Страница 5: ...2 1 Setup 13 2 1 1 Sensor Installation or Replacement 13 2 1 2 Mounting 15 2 1 2 1 V Mount Adapter Installation 15 2 1 2 2 Universal Mounting Clamp Installation 16 2 1 3 Battery Installation 16 2 1 4 Calibration 18 2 1 5 Alarms MD300 only 20 2 1 6 Output 0 1 VDC or RS232 21 2 2 Use 22 2 2 1 Gas Sampling 22 2 3 Gas Sampling Sensor Issues 24 2 3 1 Temperature 24 2 3 2 Pressure 25 2 3 3 Humidity 25 2...

Страница 6: ...29 3 3 Battery Maintenance 29 3 4 Sensor Maintenance 30 3 5 Gas Sampling 30 3 5 1 Discrepancy in Readings 30 3 6 Troubleshooting 31 3 7 Watchdog 34 3 8 Other Problems with the Instrument 36 3 9 Return Authorization for Service 36 Appendix 37 A 1 Specifications 37 A 2 Spare Parts List 38 A 3 Optional Accessories 38 Index Error Bookmark not defined ...

Страница 7: ...n to Monitor 14 Figure 2 3 Mounting the Sensor in the Tee Adapter 15 Figure 2 4 V Mount Adapter Installation 16 Figure 2 5 Brass Insert for Universal Mounting Clamp 16 Figure 2 6 Installing Batteries 17 Figure 2 7 Calibration Sequence 178 Figure 2 8 Setting the Alarms MD300 20 Figure 2 9 0 1 VDC or RS 232 Digital Output Port 22 Figure 2 10 Low Pressure Gas Sampling 23 Figure 2 11 High Pressure Gas...

Страница 8: ...AD300 MD300 Teledyne Analytical Instruments viii List of Tables Table 3 1 Troubleshooting 31 Table 3 2 Error Codes 35 ...

Страница 9: ... audio visual alarm capability These instruments are designed to monitor up to 100 oxygen concentration in breathable gas mixtures Because they are microprocessor based the AD MD300 series 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 MD300 front f...

Страница 10: ...e single range of 0 100 using Teledyne s class R17S oxygen sensor A unique sensor failure alarm is incorporated which warns the user if the sensor signal is lost or low When this occurs the SENSOR display flashes The alarm buzzer can be silenced by pressing the ALARM SILENCE key If the alarm condition is not corrected within 115 seconds the alarm buzzer will reactivate The MD300 unit incorporates ...

Страница 11: ... back lighting upon key press Microprocessor controlled Up Down front panel controls Sensor fail disconnect alarm indicator audible and visual Alarm silence button 2000 operating hours from 3 AA alkaline batteries Battery status indicator Rugged high impact ABS construction Splash resistant case Long life 36 months in air class R17S sensor VDC digital output optional RS 232 The MD300 features incl...

Страница 12: ... Teledyne Analytical Instruments Patented R17S disposable oxygen sensor The sensor is made up of a sensing cathode and anode fuel immersed in electrolyte and packaged in a small plastic container Oxygen entering the sensor reacts with the anode and a proportional current is collected at the sensing cathode This current is sent to the electronics where it is converted into a digital signal and disp...

Страница 13: ...n incorporated to prevent accidental changes to critical settings This eliminates unwanted changes in calibration or alarm settings from accidental touching or bumping of the keys To further reduce the possibly of incorrect adjustments at least two keys must be pressed in order to modify a critical calibration or alarm set point value Note The ALARM SILENCE and BATT TEST key continue to operate no...

Страница 14: ...Plug one end of the coiled cable into the jack receptacle on the back end of the R17S sensor and secure in place with the capture nut located at the base of the connector See Figure 2 1 Figure 2 1 Installing the R17S Sensor 3 Plug the other end of the coiled cable into the receptacle located on the right side of the unit and secure it in place using the capture nut See Figure 2 2 Figure 2 2 Sensor...

Страница 15: ...epending on the optional equipment ordered at the time of purchase See Section 1 2 2 1 2 1 V MOUNT ADAPTER INSTALLATION The V Mount Adapter consists of a matching plastic plate with integral V grooves that attach to the rear of the instrument To install V Mount Adapter remove the battery compartment door by prying up the hinged latch at the bottom of the cover then slide the adapter plate into gro...

Страница 16: ...e 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 monitor will operate The unit must be recalibrated whenever new batteries are installed For the MD300 the HI and LOW alarm set points must be reset to the desired values To install the batteries 1 Turn the unit off if it is on 2 Hold the in...

Страница 17: ...battery Figure 2 6 Installing Batteries 4 Re install the battery compartment door When the unit is first turned on the display will momentarily display all LCD segments During this period diagnostic tests are being conducted to insure 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...

Страница 18: ...s point On the MD300 monitor the alarm set points will also need to be reset after calibration is completed Note For first time and for routine maintenance calibrations make sure the sensor and sensor cable are installed correctly before attempting to calibrate the instrument To calibrate the instrument See Figure 2 7 1 Turn the unit on by pressing the ON OFF I O key 2 Check the batteries by press...

Страница 19: ...or from the oxygen supply and confirm the LCD reads less than 22 in room air It is not necessary for it to read exactly 20 9 7 It is important to perform the calibration carefully and thoroughly using calibration gases that are free from contaminates Wait for a stable reading before locking in calibration point The accuracy of the instrument is only as good as the procedure used to calibrate it No...

Страница 20: ...e defeated by setting the HI alarm limit one step above 100 The display will blink ALARM OFF continually in this mode 2 To set the LO alarm press the LO ALARM SET key once Press the UP and DOWN arrow key to select a value A built in safety feature will not allow you to select a LO alarm value less than 18 Press LOCL key to save settings Note The MD300 is designed to prevent crossing of HI LO alarm...

Страница 21: ... from Teledyne for this purpose To connect the analyzer to an analog recording device 1 Insert one end of the interface cable into the output port on the side of the instrument See Figure 2 9 2 Insert the other end into the analog recorder device Make sure the device is equipped to handle a 0 1 VDC signal When properly calibrated the output signal generated by the analyzer is linear and proportion...

Страница 22: ...B 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 4 CAUTION RECORDER RS232 OUTPUT SIGNAL SHOULD ONLY BE CONNECTED TO AN EN60601 1 IEC60606 1 APPROVED DEVICE To reconfigure the analyzer from a digital RS 232 output to analog 0 1 VDC outpu...

Страница 23: ... gas to flow for approximately 30 seconds When a stable reading is observed close the cylinder valve Allow reading to settle for a few seconds This is the oxygen value of the sample gas Figure 2 10 Low Pressure Gas Sampling HIGH PRESSURE SAMPLING To measure the oxygen concentration directly from the high pressure cylinder Install the optional DIN connector onto the tank and insert the blue tee ada...

Страница 24: ... LOCK UNLOCK key can be used to prevent accidental changes to the front panel key adjustments The LOCK UNLOCK key acts as a toggle pressing LOCK UNLOCK once renders inactive all keys except the ALARM SILENCE and BATT TEST MD300 only keys Pressing LOCK UNLOCK a second time unlocks the keypad 2 3 Gas Sampling Sensor Issues 2 3 1 Temperature The R17S oxygen sensor adjusts for ambient temperature chan...

Страница 25: ...rtial pressure 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 An un pressurized reading of 50 oxygen will increase to 55 3 if the sensor is subjected to a pressure of 100cm H2O The reading will rise proportionally less for smaller pressures 2 3 3 Humidity Humidity does not directly affect...

Страница 26: ...sing 100 oxygen If the monitor can be calibrated the unit can be assumed to be in good working order and capable of providing readings to specification If after checking the unit the discrepancy in oxygen readings persists the gas being analyzed should not be used Further investigation should be made until the discrepancy in readings is resolved The troubleshooting section of this manual may provi...

Страница 27: ... key feature Keep the unit sensor and connections dry Recalibrate after replacing the batteries Recalibrate after replacing the sensor Use properly installed alkaline batteries only Make sure the R17S sensor is properly attached Remove the plastic flow diverter when analyzing non flowing samples Remove and save the plastic flow diverter when using the sensor in non flowing applications MD300 only ...

Страница 28: ... or broken sensor Immerse the unit or sensor in any liquid Pass hot or cold gas mixtures over the sensor Adjust the reading in air after 100 calibration Use cleaning agents or liquids in the cable receptacles or around the battery compartment Store the unit in hot or humid environment Expose the LCD to excessive sunlight ...

Страница 29: ...nts to be made within this 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 elsewhere in this manual the unit must be sent back to the factory for repair or replacement See Section 3 9 for instructions on obtaining a Return Merchandise Authorization RMA number before sending a unit back ...

Страница 30: ...acing the sensor DON T immerse the R17S sensor in liquid DON T freeze the R17S 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 ...

Страница 31: ...the message SENSOR and sounds the audible and visual alarm continuously it is an indication of a faulty 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 s...

Страница 32: ...d 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 is no longer usable Replace sensor The oxygen reading fluctuates or appears to be incorrect Like all O2 sensors the R17S detects the changes in the partial pressure of O2 A During calibration...

Страница 33: ...atteries 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 possible change its coiled length to de tune its antenna effect Placing the cable in a di...

Страница 34: ...he watchdog detects a failure one of the following codes will appear on the LCD The error codes can appear on the LCD when batteries are first installed during normal operation 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...

Страница 35: ...erter circuit 50 5 The ADC circuit failed during POST 6 5 6 There is no indication of which key is stuck A stuck key has been detected The second digit in this example 5 on the display shows which key is stuck 0 Low Alarm 1 Batt 2 Cal 3 Up 4 Down 5 Silence 6 High Alarm 7 Alarm Test 8 Key Lock 7 2 7 There is no indication of the type of DAC failure A failure has occurred during the automatic calibr...

Страница 36: ... keypad The Error Code Table Table 3 2 includes a description of certain fault codes which are diagnostic of some common usually electronic problem with the instrument Some of these codes refer to specific components on the PCB that are problematic or have failed These codes are useful in reporting a problem with your instrument to Teledyne Customer Service If an error code is indicated on your mo...

Страница 37: ...atteries Sensor Type Class R17S Expected Life 36 months in air 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 ...

Страница 38: ...ample adapter assembly 3 B99 AA size alkaline battery 1 C74721 Sensor cable assembly A 3 Optional Accessories 1 A585 DIN 300 flow Restrictor 1 CP2345 Universal Mounting Clamp 1 CP2344 V mount Pole Clamp 1 B647 V mount Wall Adapter 1 B 75554 0 1 VDC Interface Cable 1 B 75555 RS 232 Interface Cable ____________________ Note Orders for replacement parts should include the part number if available and...

Страница 39: ... Teledyne Analytical Instruments 39 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 ...

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