LPA²/User Guide
Contents
1. ig i NAS CODE SAMPLE VOLUME 15ml 100ml XXXXXXXXX XXXXXXXXX XXXXXXXXX XXXXXXXXX XXXXXXXXX XXXXXXXXX XXXXXXXXX XXXXXXXXX 3 5 Further Tests 3 5 1 Same Sampling Point The Analyser upper operating limit is set at 24 22 20 Tests that result in particle counts exceeding any scale number in the three part ISO code upper limit has the scale number re placed by an asterisk Also the associated particle counts on the printout are replaced by X s Refer to the example on the left To repeat a test on the same sample point press START button 1 Note that the test number will automatically increment Online Operation 17 3 5 2 3 5 3 3 6 Different Sampling Point Same System To carry out this new test repeat steps 8 to 13 on page 14 To change test reference test mode data repeat steps 1 to 13 on page 11 New System To carry out this test repeat steps 1 to 13 on page 11 Shutting Down Disconnect the Fluid Sampling Hose from the system by means of the Minimess connector This isolates the fluid supply Operate the Flush Valve to release the pressure Switch off the Analyser by Pressing the Red Button Remove the Fluid Sampling Hose from the Analyser Remove the Waste Fluid Hose from the Analyser Replace the Hose End Caps on sampling hose wipe clean and store Connect the Waste Fluid Hose quick coupling end fittings together wipe clean and store 18 Online Operation 4 Con2. Data storage Computer interface Hose connections Dimensions SPECIFICATION APPENDIX H 15 ml normal 30 ml dynamic 24 ml bottle sampler 15 ml continuous 8ml short Max system working pressure 400 bar Min working pressure 2 bar to 400 centistokes 5 to 80 C Mineral oil amp petroleum based fluids consult MP Filtri UK for other fluids Result in lt 2 5 mins normal test Internal rechargeable battery mains charger or External 12 24 volt DC power supply 600 tests RS 232 communication port Minimess fittings Microbore hose 1 5 metres long Waste fluid hose Height 210mm Depth 260mm Width 430mm Weight 7 6kg 61 APPENDIX I Spare Product Part Numbers For spares and part numbers please see the website www mpfiltri co uk 62 SPARE PRODUCT PART NUMBERS APPENDIX J COM Ports The LPA uses the RS232 connection standard to interface with a computer If the computer does not have a built in RS232 COM port a USB RS232 adaptor can be used Connection Using a USB Port This is used when a built in RS232 port is not available When using a USB Adaptor provided with the LPA Install the Prolific driver from the file PL2303_Prolific_DriverInstaller_v110 exe on the provided CD You will need to accept any warnings about making changes to your com puter Follow the installer Wizard accepting the defaults When the installer has completed plug in the USB to
3. 5 Button 5 is used from the Settings Screen to cycle between the available test types These are Normal Dynamic Triple Bot tle Continuous and Short Sample The selection will be dis played on the Main test progression screen Normal Single Test 15ml sample volume Dynamic A comprehensive triple test with results average 30 ml sample volume comprised of three 10ml sampling and emptying cycles Allows the effect of system fluctuations to be measured over un Results will be displayed upon completion of three tests including emptying cycle Online Operation 13 3 2 6 3 3 a longer period of time Unit is flushed in between tests to ensure each sample is representative of its point in time Triple Bottle Sampling A triple test with results average and quicker than the Dynamic Test 24ml sample volume comprised of three individual 8 ml samples tested consecutively For Bottle Sam pling refer to separate User Guide Continuous for detailed instructions refer to Continuous Sampling page 19 Short Single Test 8 ml sample volume This provides results in less time than the Normal Test It is not recommended for oil samples cleaner than ISO 17 15 12 NAS 6 as the accuracy of the result might be compromised by the small sample volume Press 5 repeatedly to select desired test type Test Options Press 6 The Test Options Screen will be displayed The RH
4. Bourton on the Water GL54 2HQ U K Tel 44 1451 822522 Fax 44 1451 822282 Email sales mpfiltri co uk Website www mpfiltri co uk ITALY HEADQUARTERS MP FILTRI S p A Tel 39 02 95703 1 Fax 39 02 95741497 95740188 Email sales mpfiltri com Website www mpfiltri com CANADA MP FILTRI CANADA INC Tel 1 905 303 1369 Fax 1 905 303 7256 Email mail mpfiltricanada com Website www mpfiltricanada com CHINA MP FILTRI Shanghai Co Ltd Tel 86 21 58919916 Fax 86 21 58919667 Email sales mpfiltrishanghai com Website www mpfiltrichina com GERMANY MP FILTRI D GmbH Tel 49 6806 85022 0 Fax 49 6806 85022 18 Email service mpfiltri de Website www mpfiltri com FRANCE MP FILTRI FRANCE Tel 33 1 40 86 47 00 Fax 33 1 40 86 47 09 Email contact mpfiltrifrance com Website www mpfiltri com INDIA MP FILTRI INDIA Tel 91 9945599899 Email s mishra mpfiltri com Website www mpfiltri com RUSSIAN FEDERATION MP FILTRI RUSSIA INC Phone mobile 7 095 502 5411 Fax 7 095 205 9410 Email mpfiltrirussia yahoo com Website www mpfiltri ru USA MP FILTRI USA Inc Tel 1 215 529 1300 Fax 1 215 529 1902 Email sales mpfiltriusa com Website www mpfiltriusa com UAE MP FILTRI UEA Tel 91 9945599899 Email s mishra mpfiltri com Website www mpfiltri com
5. LPA User Guide RAPFICT Ie O www mpfiltri co uk Covers Model Numbers LPA SAFETY WARNING Hydraulic systems contain dangerous fluids at high pressures and temperatures Installation servicing and adjustment is only to be performed by qualified personnel Do not tamper with this device DocuMENT REVISION 15 Contents 1 9 Precautions Battery Internal Cleaning LCD Visibility Introduction Online Operation Main Test Progress Screen Analyser Settings For Test Interpreting Results Further Tests Continuous Sampling Continuous Sampling Basic Operation Moisture Sensor Alarms Wiring Bottle Sampling Data Logging 10 Battery Charging 11 Printer Paper 12 Computer Analysis Software Installation eResults Download 6 8 Preparing Analyser Shutting Down 19 26 28 31 33 34 35 37 39 13 Warranty 40 eRecalibration A Measuring Water in Hydraulic and Lubricating Fluids al B 1504406 1999 Cleanliness Code System 43 C NAS1638 Cleanliness Code System 45 D SAE AS4059 REV E Cleanliness Classification For Hydraulic Fluids 46 E Recommendations 49 F Hydraulic System Target Cleanliness Levels 51 G New ISO Medium Test Dust and its effect on ISO Contamination Control Standards 53 Calibration New Test Dust Benefits Effect on Industry Corre lation Other Standards H Specification 60 Spare Product Part Numbers 62 J COM Ports 63
6. 5 Moisture Sensor The LPA version fitted with the optional moisture sensor module allows both measurement of saturation of water in oil Relative Humidity and temperature These are displayed as RH and C on the main test progress screen and on the printed results Temperature measurement provides a reference temperature for the RH reading Due to the temperature gradient existing between the system tapping point and the RH temperature module the tempera ture reading can be 5 C to 10 C less than the actual system temperature depending on operating conditions XV d The LPA can be configured to do a test with or without the moisture sensor selected If the moisture sensor has been selected the flush valve will open automatically for a period of 3 minutes before the particle count test commences This is to allow the moisture sensor to stabilise and give an accurate reading To switch the moisture sensor ON or OFF select the Test Option Screen as described on page 14 The Test Options Screen will be displayed 26 Moisture Sensor Minutes Between Tests 0 Log Every Test On 3 Confirm Cleanliness Level Off Clean Alarm Level ISO 0 Clean Alarm Level NAS1638 AS4059E 1 0 Clean Alarm Level AS4059E 2 1A 2B 3C 4D 5E 6F 7 RH Test On Press a Key to Choose or 0 to Exit 4 Press 7 to change RH Test status to ON or OFF Moisture Sensor 27 6 Alarms Acces
7. For example 6B 6C 7D is translated as A 6B 6C 7D E F In this case testing will continue until the B C and D Classes are less than or equal to 6 6 7 respectively The A E and F Classes are effectively ignored since they cannot ever be worse than a Class Note AS4059E 2 denotes Table 2 of the AS4059E standard 11 Press flush valve push button to open flush valve push button illu minates to indicate valve is open Leave valve open for at least one 24 Continuous Sampling 12 13 14 15 16 minute or 200ml of fluid to remove any entrapped air and fluid from the previous test ensuring no cross contamination between samples Press flush valve push button to close flush valve push button illu mination is cancelled Alternatively proceed to step 13 the action of pressing Start button automatically closes the Flush valve before sampling commences Press START button The Analyser will now commence the sampling cycles The completion progress bar indicates the status of the test e Results will be automatically displayed on the screen after each test e Results will be automatically printed at the end of the emptying cycle if the Auto Print mode has been turned ON The status is shown as Waiting between the ending of one test and the stating of the next test Press Stop button key 2 at any time in the cycle to end continuous sampling The test status will show Idle Continuous Sampling 25
8. f 8 3 5 4 Z 2 5 2 lt E 119 21 4 6 14 NewISO 4406 standard um c 5 15 Old standard 44 1S04406 1999 CLEANLINESS CODE SYSTEM APPENDIX C NAS1638 Cleanliness Code System The NAS system was originally developed in 1964 to define contamination classes for the contamination contained within aircraft components The ap plication of this standard was extended to industrial hydraulic systems simply because nothing else existed at the time The coding system defines the max imum numbers permitted of 100ml volume at various size intervals differ ential counts rather than using cumulative counts as in ISO 4406 1999 Al though there is no guidance given in the standard on how to quote the levels most industrial users quote a single code which is the highest recorded in all sizes and this convention is used on the LPA software 00 0 1 2 3 4 5 6 7 8 9 10 11 12 5 15 125 250 500 1000 2000 4000 8000 16000 32000 64000 128000 256000 512000 1024000 15 25 22 4 89 178 356 712 1425 2850 5700 11400 22800 45600 91200 182400 25 50 4 8 16 32 63 126 253 506 1012 2025 4050 8100 16200 32400 50 100 1 2 3 6 11 22 45 90 180 360 720 1440 2880 5760 Over 100 O 0 sl 1 2 4 8 16 32 64 128 256 512 1024 Figure C I CONTAMINATION LEVEL CLASSES according to NAS1638 January 1964 The contamination classes are defined by a number from 00 to 12 which indicates the maximum number of particles per 100 ml counted on a differ entia
9. then 5 Print A hard copy of the result will then be printed The result printed will be viewed in the Result Presentation Options format from the Set function 34 Data Logging 10 Battery Charging The LPA is equipped with an internal rechargeable battery capa ble of sustaining 8 hours continuous operation following a 24 hour charging period approximately 100 tests To conserve battery power the LCD screen is illuminated at a re duced level when the LPA is operated without an external power supply connected When the Low battery level indicator is displayed the LPA re quires recharging as soon as possible BEFORE COMMENCING RECHARGING always press RED button to switch off the Analyser To recharge connect lead from power adaptor to the DC power in put socket on the LPA Observe that the battery charging indicator illuminates on the LPA Battery power may be conserved by e Operating LPA whilst connected to power adaptor e Switching LPA OFF between samples e Turning Auto Print Mode OFF Should the battery become completely discharged it is advisable to allow a minimum of 15 minutes charge time prior to commencing a test The LPA must remain connected to the power adaptor during subsequent tests until the battery has had time to recharge Battery Charging 35 Total discharge will shorten the battery lifetime so should be avoided where possible 36 Battery Charging 11 Printer Paper To acce
10. Clean Alarm Level NAS1638 AS4059E 1 Press 5 then input desired Clean Alarm Level as a single Class number in the range 2 to 12 inclusive example 6 RETURN For continuous testing until the NAS1638 AS4059E 1 Class is achieved select NAS Format or AS4059E Table 1 as de scribed in Analyser Settings page 11 instruction 4 1 Test ing will automatically continue until the Class number has been achieved at each of the five micron size ranges covered by NAS 1638 amp AS4059E Table 1 Note AS4059E 1 denotes Table 1 of the AS4059E standard 6 Clean Alarm Level AS4059E 2 Continuous Sampling 23 Press 6 then input desired Clean Alarm Level in the format 1A 2B 3C 4D 5E 6F in the following range Size Code A 000to 12 Size Code B 00 to 12 Size Code C 00 to 12 Size Code D 2 to 12 Size Code E 4 to 12 Size Code F 7 to 12 Example 4A 4B 5C 6D 6E 7F For continuous testing until the AS4059E Table 2 size codes are achieved select AS4059E TABLE 2 FORMAT as described in Analyser Settings page 11 instruction 4 1 Testing will auto matically continue until the Class number has been achieved at each of the six Size Codes Also the LPA will handle deviations from the above format intelligently The size code can be out of order 7F 4A 5C 4B 6E 6D If any sizes are missing they will be assigned the value The effect of this is a don t care value when used as the cleanliness target
11. Connection Using a USB Port Determining the COM Port K Fault Finding 65 1 1 1 1 2 1 3 Precautions The default language setting for the LPA Laser Particle Analyser is English To change the language setting refer to page 12 Battery It is recommended that the LPA be charged for a minimum of 24 hours prior to first use to fully charge the internal battery Internal Cleaning Do NOT clean the LPA or Bottle Sampler with Acetone or similar solvents that are not compatible with the seals in the LPA The recommended cleaning fluid for internal flushing is Petroleum Ether see also Fault Finding page 65 The use of a 500m coarse screen filter screwed onto the HP con nector is recommended for heavily contaminated systems Refer to page 62 for the part number LCD Visibility If the LCD screen remains blank then refer to page 35 for recharging instruction To improve the LCD screen visibility the Analyser can be inclined by unlatching the two extension feet fitted to the bottom of the case Precautions 5 2 n Introduction The LPA is designed to measure and quantify the numbers of solid contaminants in Hydraulic Lubrication and Transmission applica tions The LPA is designed to be a laboratory accurate instrument suitable for on site applications utilising mineral oil as the oper ating fluid Please contact local sales office for other operating fluid options The instrument uses the light
12. Serial Adaptor A message should pop up indicating successful hardware installation Note any COM port number indicated in the message Connect the LPA to the computer using the Serial lead and the USB to Serial Converter If neccessary determine the COM port allocated by the computer for this device using the procedure following COM Ports 63 APPENDIX J Determining the COM Port To check the COM port number allocated by the computer for the Serial lead or the USB to Serial Connector Windows 2000 Windows XP Windows Vista Right click on My Computer icon and then left click on Properties Click on the Hardware tab and then click on the Device Manager But ton Click on the plus sign next to Ports COM amp LPT Windows 7 View the installed devices using Start Button Devices and Printers e You should see an icon representing the port Communications port if using the Serial lead ATEN USB to Serial Cable or Prolific USB to Serial Comm Port if using an adaptor cable Either of these will have a COM number after it This is the number you should use when selecting the Com Port 64 COM Ports FAULT LCD Screen remains blank after switching on Unexpected results obtained from sample FAULT FINDING APPENDIX K Fault Finding CHECK Check that Analyser had been put on charge pre viously Check that LED illuminates when power adaptor is connected to An
13. Test setting is not displayed if the option is not fitted This mainly applies to the continuous test mode Option 3 only ap plies to the Continuous Test alarm mode 1 For detailed instructions refer to Continuous Sampling page 19 Alarm Options refer to page 28 Preparing Analyser For Test Taking sample Normal Dynamic Triple Bottle Short 14 Online Operation 10 11 12 13 3 4 Press flush valve push button to open flush valve push button illu minates to indicate valve is open Leave valve open for at least one minute or 200ml of fluid to remove any entrapped air and fluid from the previous test ensuring no cross contamination between samples Press flush valve push button to close flush valve push button illu mination is cancelled Alternatively proceed to step 10 the action of pressing Start button automatically closes the Flush valve before sampling commences Press START button The analyser will now commence the sampling cycle The completion progress bar indicated the status of the sample e Results will be automatically displayed on the screen e Results will be automatically printed at the end of the sampling cycle if the Auto Print mode has been turned ON e If the Auto Print mode has been turned OFF then press Print key to obtain printed results Following the sampling results the Analyser automatically discharges the sample fluid to waste Test status is shown as Emptying
14. Won BR we Introduction 3 Online Operation 1 Insert WASTE FLUID HOSE in to the waste disposal bottle pro vided Important Do not connect Waste Fluid Hose to a pressurised system as this will cause the Analyser to malfunction and could cause internal leakage The Waste Fluid Hose must be discharged into the waste disposal bottle provided or into a tank vessel vented to atmosphere lt d 2 Connect WASTE FLUID HOSE to Analyser waste connector Push back quick coupling outer ring before connecting disconnecting hose end 3 Connect FLUID SAMPLING HOSE to Analyser HP connector 4 Connect FLUID SAMPLING HOSE to the system by means of the minimess connector The system to be monitored must not exceed 400 bar or be less than 2 bar 5 Press GREEN BUTTON to switch on Analyser the Main test pro gress screen will be displayed 8 Online Operation To prolong battery life it is advisable to switch off the Analyser when not in use 3 1 Main Test Progress Screen G N Next Test Reference Next Test Number Normal Test Ex ISO Code is Start Stop Print Paper Set Log Contrast LE Figure 3 1 Main Test Screen 1 START Starts sampling and emptying cycle 2 STOP Stops test at any point in the sampling emptying cycle Next test will start with an emptying cycle before the test commences 3 PRINT Prints test results If AUTO PRINT mode has been
15. a pressurised system as this will cause the LPA to malfunction and could cause internal leakage The Waste Fluid Hose must be discharged into a tank vessel vented to atmosphere To conserve battery life the LPA should be permanently connected to the power adaptor when it is operated in the continuous sampling mode Continuous Sampling Basic Operation See page 11 instructions 1 to 5 inclusive to select the appropriate LPA settings On the Settings Screen press 5 repeatedly until CONTINUOUS is selected Test Option Press 6 Then press the relevant key to switch between option selections Sets the MINUTES BETWEEN TESTS Press 1 then input the time in minutes that is required between the end of a test and the beginning of a new test Input a value between 1 and 30000 followed by lt RETURN selects between LOG EVERY TEST ON and LOG EVERY TEST OFF Selecting LOG EVERY TEST OFF will store none of the test results in the LPA s memory used to input the Clean Alarm Level ISO Enter a value of 0 zero if not used 20 Continuous Sampling used to input the Clean Alarm Level when using the NAS1638 AS4059E 1 format Enter 0 if not used 6 used to enter the Clean Alarm Level when using the AS4059E 2 format Enter 0 if not used This Alarm Level will now be displayed as A B C D E F Press the flush valve push button to open the flush valve The push button illuminates to indicate that the
16. adverse consequences Once the water content exceeds about 500ppm the oil starts to appear hazy Above this level there is a danger of free water accumulating in the system in areas of low flow This can lead to corrosion and accelerated wear Similarly fire resistant fluids have a natural water content which may be different to mineral oils Saturation Levels og Since the effects of free also emul Saturation point Els sified water is more harmful than Emulsified 100 those of dissolved water water lev els should remain well below the ae 75 saturation point However even water in solution can cause dam 50 age and therefore every reasonable effort should be made to keep sat 3 uration levels as low as possible eee There is no such thing as too little 2 water As a guideline we recom 0 ays mend maintaining saturation levels below 50 in all equipment MEASURING WATER CONTENT 41 APPENDIX A Typical Water Saturation Levels For New Oils 600 S 400 S N Oo Q Y 200 G a 0 20 30 40 50 60 70 Temperature C Figure Examples Hydraulic oil 30 C 200ppm 100 saturation Hydraulic oil 65 C 500ppm 100 saturation 42 MEASURING WATER CONTENT APPENDIX B 1S04406 1999 Cleanliness Code System The International Standards Orga Number of Particles per mL Scale No nization
17. extinction principle whereby 2 laser light systems shine through the fluid and lands on photodiodes When a particle passes through the beam it reduces the amount of light re ceived by the diode and from this change in condition the size of the particle can be deduced Hydraulic and Lubricating Systems consists of sets of continuously moving metal parts which use hydraulic fluid as the power medium Hydraulic fluid is also used to create a lubrication film to keep the precision parts separated and it is also used as a cooling medium The very nature of a hydraulic system is that it produces solid par ticulate contaminants and these are ever present in all hydraulic sys tems There is a revised standard ISO cleanliness code ISO 4406 1999 which classifies the numbers of particles that can be tolerated within the system and it is these levels of contaminants that the par ticle counter is designed to measure ISO Cleanliness Code The international standard for reporting solid contami nants is IS04406 1999 this standard has been revised to incorporate the change to ISO Medium Test Dust as the calibration standard 6 Introduction ous An ALY SER CCC WOW DEEE Battery charging indicator Printer Serrated Paper Cutter Screen Flush valve push button On Off Keyboard HP connector Minimess 10 Waste connector Quick coupling 11 RS232 connector 12 DC power input socket 13 Plug to external circuits
18. standard ISO 4406 1999 is the preferred method of quoting ie T e the number of solid contaminant particles in a sample Zu gues The code is constructed from the ESM ZM 29 ie 640k 1 3M 27 combination of three scale num ok BAK 36 bers selected from the following 160k 320k 25 table 80k 160k 24 The first scale number represents 20k Bok 2 the number of particles in a mil ial 2e en i 10k 20k 21 lilitre sample of the fluid that are 5000 10k 20 larger than 4 um c 2500 5000 19 The second number represents the 1300 2500 18 number of particles larger than 6 640 1300 17 320 640 16 um c 160 320 15 The third represents the number 30 160 14 of particles that are larger than 14 40 80 13 um c 20 40 12 10 20 11 5 10 10 2 5 5 0 9 1 3 2 5 8 0 64 1 3 7 0 32 0 64 6 0 16 0 32 5 0 08 0 16 4 0 04 0 08 3 0 02 0 04 2 0 01 0 02 1 0 0 0 01 o ISO4406 1999 CLEANLINESS CODE SYSTEM 43 APPENDIX B Microscope counting examines the 71 10 24 particles differently to APCs and 8 so 23 the code is given with two scale 4 22 numbers only These are at 5 um 2 Example and 15 um equivalent to the 6 6 code 21 10 22 19 14 um c and 14 um c of the APCs 20 19 2 5 18 513 10 17 6 4 16 3 2 15 1 6 104 14 8 13 4 12 2 11 102 10 g 5 g 5 O 3 2 5 E 8 21 3 5 10 7 6 4 B 6 z 3 2 E 5 1 6 2 10 44
19. valve is open Leave valve open for at least 1 minute or 200ml of fluid or more if the HP sam pling hose is greater than 1 5m long Press flush valve push button to close flush valve push button il luminates is cancelled Alternatively proceed to Step 5 below the action of pressing Start button automatically closes the flush valve before sampling commenced Press the START button The LPA will now commence the sampling procedure The completion progress bar indicates the status of the test e Results will be automatically displayed on the screen after each test e Results will be automatically printed at the end of the emptying cycle if the Auto Print mode has been turned ON The status is shown as Waiting between the ending of one test and the starting of the next Press Stop button 2 at any point in the cycle to end continuous sampling The test status will show Idle Continuous Sampling 21 4 1 1 10 Continuous Sampling with Clean Alarm Levels Alarm Mode 1 This operating mode is similar to the Basic Operation but in this mode the LPA will stop testing when the specified clean alarm level is achieved A status of COMPLETED is shown on the LCD when the specified clean alarm level is achieved For other Alarm Modes refer to page 30 Follow the section Analyser Settings page 11 instructions 1 to 5 inclusive to select the appropriate LPA settings On the Settings Screen press 5 repeatedl
20. will download all stored results from memory into the software package Upon completion of upload the Analyser memory can be automatically deleted if this option has been selected from the PC menu 4 When the transfer is complete switch OFF the Analyser 7 See Appendix on page 63 for more information on the RS232 connection options Computer Analysis 39 13 13 1 Warranty The LPA is guaranteed for 12 months upon receipt of the Analyser subject to it being used for the purpose intended and operated in accordance with this user guide Please fill in online Recalibration MP Filtri UK will only verify the accuracy of the LPA if the unit is recalibrated every 12 months Please ensure that the test results in the Log are downloaded to LPA View before the LPA is despatched in case action taken by MP Filtri UK during the service recalibration causes the Log to be cleared KL d It is requested that only the LPA not the support case or any other ancilliaries be returned for recalibration MP Filtri UK will not be held responsible for any items returned as such Ensure that the LPA is packed appropriately for transportation 40 Warranty APPENDIX A Measuring Water in Hydraulic and Lubricating Fluids From North Notts Fluid Power Centre In mineral oils and non aqueous fire resistant fluids water is undesirable Min eral oil usually has a water content of 50 300 ppm which it can support with out
21. 10 800F 17 15 12 6 3 18 16 10 800 18 16 11 1 300F 18 16 13 7 4 19 17 11 1 300 2000F 19 17 14 8 5 20 18 12 2 000 20 18 13 4 400F 20 18 15 9 6 21 19 13 4 400 6 300F 21 19 16 10 22 20 13 6 300 22 20 17 11 23 12 14 15 000 23 21 18 12 24 22 15 21 000 25 23 17 100 000 Table I New ISO Meprium TEST DUST AND ITS EFFECT ON ISO 59 APPENDIX H Specification As a policy of continual improvement MP Filtri UK reserve the right to alter the specification without prior notice Technology Optical Package Display Sensitivity Accuracy repeatability Calibration Analysis Range Report Print Format Printer 60 Automatic Optical Particle Analyser Twin Laser and Twin Optical Diode Detectors Backlight graphical LCD gt 4 6 14 21 25 38 50 70 um c sizes to revised ISO 4406 1999 Standard Better than 3 typical Each unit is individually calibrated with ISO Medium Test Dust MTD based on ISO 11171 1999 on equipment certified by LET S ISO 8 to ISO 24 to ISO 4406 1999 NAS 1638 2 to 12 AS4059E Table 1 2 to 12 AS4059E Table 2 Size Codes A 000 to 12 B 00 to 12 C 00 to 12 D 2 to 12 E 4 to 12 F 7 to 12 IS04406 1999 NAS1638 and AS4059E codes classes with individual particle counts as a built in option Fixed head thermal printer 384 dots per line SPECIFICATION LPA Sample volume Operation Viscosity range Operating temperature Fluid compatibility Typical test time Power
22. 2 3 3 2 4 A Time and Date Press 3 then use the keypad to set the time and date Cycle Count A cumulative cycle count is also displayed on the Time amp Date screen This count automatically increases by 1 each time a test is taken Itis not possible to adjust reset this value Result Presentation Options Press 4 to bring up the Presentation Options screen Then press the relevant key to switch between the option selections 1 cycles between the various available formats for the test result These are ISO NAS AS4059E 2 and AS4059E 1 turns on and off the printing of detailed counts with the test re sult E turns on and off the printing of the user Test Reference 4 turns on and off automatic result printing ur turns on and off the printing of an additional space for hand writ ten notes on the printout 6 selects the display language Note the Analyser has 5 language options AS4059E 1 and AS4059E 2 denotes Table 1 and Table 2 of the AS4059E standard respectively 12 Online Operation 0 English Default 1 Italian 2 French 3 German 4 Chinese For selection of language proceed as follows Press 6 Enter chosen value e g 1 lt for Italian Press key 0 zero Press key 0 zero Wait 5 seconds Switch OFF the unit RESTART the unit The main screen will then be displayed in the language se lected 3 2 5 Test Type
23. 38 gt 70 Size Code A B C D E F Classes 000 195 76 14 3 1 0 00 390 152 27 5 1 0 0 780 304 54 10 2 0 1 1 560 609 109 20 4 1 2 3 120 1 217 217 39 7 1 3 6 250 2 432 432 76 13 2 4 12 500 4 864 864 152 26 4 5 25 000 9 731 1 731 306 53 8 6 50 000 19 462 3 462 612 106 16 7 100 000 38 924 6 924 1 224 212 32 8 200 000 77 849 13 849 2 449 424 64 Ke 400 000 155 698 27 698 4 898 848 128 10 800 000 311 396 55 396 9 796 1 696 256 11 1 600 000 622 792 110 792 19 592 3 392 512 12 3 200 000 1 245 584 221 584 39 184 6 784 1 024 Table D II AS4059E Table 2 Cleanliness Classes for Cumulative Particle Counts 48 SAE AS4059 REV E CLEANLINESS CLASSIFICATION FOR APPENDIX E Recommendations Unit Type ISO 4406 1999 Code PUMP Piston slow speed in line 22 20 16 Piston high speed variable 17 15 13 Gear 19 17 15 Vane 18 16 14 MOTOR Axial piston 18 16 13 Radial piston 19 17 13 Gear 20 18 15 Vane 19 17 14 VALVE Directional solenoid 20 18 15 Pressure control modulating 19 17 14 Flow control 19 17 14 Check valve 20 18 15 Cartridge valve 20 18 15 Proportional 18 16 13 Servo valve 16 14 11 ACTUATOR 20 18 15 Table E I Typical Manufacturers Recommendations for Component Cleanliness ISO 4406 1999 Most component manufacturers know the proportionate effect that increased dirt level has on the performance of their components and issue maximum permissible contamination levels They state that operating compo
24. 4 6 and 14 um with 6 and 14 um corresponding very closely to the previous 5 and 15 um measurements This will ensure consistency in data reporting As the counts derived by microscope counting methods are not affected the particle sizes used for microscopy will remain unchanged i e at 5 and 15 um X The option of quoting just two counts of 6um and 14um for APCs remains New ISO Mepium TEST DUST AND ITS EFFECT ON ISO 55 APPENDIX G To clarify matters still further ISO standards written around the new test dust will utilize a new identifier c Hence um sizes according to the new ISO 11171 will be expresses as um c and Beta ratios according to ISO 16889 will be expressed as Bx c e g B5 c However it must be stressed that the only real effect users will experience will be the improved accuracy in particle counts there will be no change in the performance of filters nor in the ISO cleanliness levels that they will achieve The following charts shows the correlation between the old ACFTD and the new ISO MTD The LPA is calibrated with ISO Medium Test Dust to ISO 11171 The correlation between particle sizes and the ACFTD old standard to the ISO MTD new standard is as follows ACFTD lt 1 5 15 25 30 50 75 100 ISOMTD 4 6 14 21 25 38 50 70 XI Not verified by NIST XI acftd 56 New ISO Meprium Test Dust AND ITS EFFECT ON ISO APPENDIX G Correlation Particle Size Obta
25. When the Sampling and Emptying cycle has been completed the test status is shown as Idle Results are automatically stored to memory To download results follow instructions on page 34 Interpreting Results Refer to page 49 for hydraulic component manufacturers recommen dations on standard cleanliness requirements for various applica tions IS04406 1999 and NAS1638 cannot be directly compared Online Operation 15 TEST NUMBER 39 TEST NUMBER 39 TEST REF CALIBRATION TEST REF CALIBRATION TEST TYPE Normal TEST TYPE Dynamic ISO CODE ISO CODE NAS CODE 10 NAS CODE 6 SAMPLE VOLUME 15ml SAMPLE VOLUME 24ml um c 100ml 100m 100ml Average um c 100ml 4 29092 27370 34069 30177 pee 6 11675 12058 17417 13716 a oral 14 1132 1274 1062 1156 2064 21 283 389 424 365 JE adi 25 177 318 212 235 38 35 35 70 46 38 240 z0 A 50 0 0 0 0 70 70 0 0 0 0 ONLINE Normal ONLINE Dynamic Particle count ISO and NAS Code complete and ISO code to with average analysis 1S04406 1999 standard TEST NUMBER 39 TEST REF CALIBRATION TEST TYPE Normal NAS CODE um 5 15 15 25 25 50 50 100 100 NAS 6 5 T T 00 ISO CODE 16 15 12 SAMPLE VOLUME 15ml ym 100ml 5 15 15860 15 25 1239 25 50 952 50 100 132 100 0 ONLINE Normal Particle counts displayed NAS code 1638 standard Online Operation TEST NUMBER TEST REF TEST TYPE ISO CODE ym c 4 6 14 21 25 38 50 70 39 CALIBRATION Normal
26. agement systems There was also an absence of formal controls over the distribution of the test dust and batch to batch variability was much greater than is acceptable nowadays New ISO Meprium TEST DUST AND ITS EFFECT ON ISO 53 APPENDIX G ISO therefore defined the requirements for the replacement for ACFTD and asked the National Institute of Standards and Technology NIST in the USA to produce a standard traceable reference material The new dust s parti cle size distribution has been accurately determined with the aid of modern scanning electron microscope and image analysis techniques New Test Dust Benefits The new ISO Medium Test Dust ISO MTD consists of similar materials to the old ACFTD but to minimize particle counting errors it is of a slightly coarser grade because ACFTD included too many particles smaller than Sum which gave problems during testing ISO MTD is produced to a standard distribution and stringent quality control procedures thereby ensuring excellent batch to batch repeatability These procedures combined with a revised ISO APC calibration method give e A traceable and controlled reference test dust with greatly reduced vari ation in particle size distribution This gives the trace ability required by ISO 9000 QS9000 and similar quality management systems e A procedure for determining the performance of APCs so that minimum acceptable levels can be set by the user e Improved calibration techn
27. alyser DC Power Input Socket Check that the fluid sampling hose has been fully connected at both the system and Analyser ends Confirm that there is a free flow of fluid to the Analyser by depressing the Flush Valve and ob serving fluid passing into the waste disposal bot tle High water aeration levels If suspected contact MP Filtri UK for further advice 65 APPENDIX K fa If excessive system contamination is suspected flush out the Analyser using a Bottle Sampling Unit in conjunction with a suitable solvent The standard LPA and the standard Bottle Sampling units are both fitted with Nitrile seals so Petroleum Ether may be used for this purpose Petroleum Ether is not compatible with seals manufactured from EPDM which are used in the Phosphate Ester version of the 250 Bottle Sam pling unit Iso propyl alcohol should be used as the flushing fluid Please consult the website for other compatible fluids DO NOT USE ACETONE 66 FAULT FINDING Produced by MP Filtri UK Revision 15 As a policy of continual improvement MP Filtri UK reserve the right to alter specifi cations without prior notice Except as permitted by such licence no part of this publication may be reproduced stored in retrieval system or transmitted in any form or any means electronic me chanical recording or otherwise without prior written permission of MP Filtri UK MP FILTRI UK Limited Bourton Industrial Park
28. ds When General Motors gave advance warning to the International Standards Organization ISO that it was intending to stop the production of AC Fine Test Dust ACFTD work commenced immediately on finding an improved replacement dust ACFTD was used extensively within the fluid power and automotive industries for calibrating Automatic Particle Counters APCs and for the testing of components APCs are used for testing oil filters and also for contaminant sensitivity test ing of hydraulic components For 25 years APCs have been the main stay in the measurement of solid particles in hydraulic fluids The growth in demand for measuring fluid cleanliness in a variety of industrial processes including fluid power has resulted in APCs moving from the laboratory environment out into the factory In fact they are now a critical part of many production processes It is therefore essential that the data they provide is both accurate and consistent Calibration ACFTD has been used as an artificial contaminant since the 1960s and its original particle size distribution was determined using an optical micro scope This particle size distribution subsequently formed the basis of ISO 4402 the method for calibrating APCs Due to the limitations of that method of measurement the particle size distribution was questioned below about Sum It was also not traceable to any national standard of measurement a critical requirement for today s quality man
29. e 12 Both relays are initially off and remain off until an alarm level has been reached exceeded The following illustrates the switching logic of the Relays Relay 1 Dirty NAS AS4059E 1 single number result gt set limit On result lt set limit Off ISO AS4059E 2 multi part any result gt corresponding set limit On all results lt corresponding set limit Off Relay 2 Clean NAS AS4059E 1 single number result lt set limit On result gt set limit Off Alarms 29 ISO AS4059E 2 multi part all results lt corresponding setlimit On any result gt corresponding set limit Off Alarm Modes 3 and 4 These are reserved for future development 30 Alarms 7 Wiring The LPA contains two solid state relays which can be used to switch an external circuit when using the Continuous Test mode The func tion of these relays for Alarm Mode 1 is shown in the following sim ple wiring diagrams using a battery and bulb circuit for illustrative purposes Each relay is designed for a maximum current of 1 amp at 24 volt nominal AC or DC absolute maximum 60 volt peak Operation above these limits will cause irreparable damage to the relays If the User needs to switch voltages currents in excess of the above maximum limits then separate higher rated interposing relays will need to be incorporated into the final electrical scheme designed by the User Common Terminal 1 Plug to Terminal 3 ex
30. he acceptability or otherwise of those levels can be verified Thus if no failures have occurred the average level measured may well be one which could be made a bench mark However such a level may have to be modified if the conditions change or if specific contaminant sen sitive components are added to the system The demand for greater reliability may also necessitate an improved cleanliness level The level of acceptability depends on three features e the contamination sensitivity of the components e the operational conditions of the system e the required reliability and life expectancy HYDRAULIC SYSTEM TARGET CLEANLINESS LEVELS 51 APPENDIX F Contamination Corresponding Recommended Typical Codes Codes Filtration Applications ISO 4406 1999 NAS 1638 Degree 4 6 14 Bx200 mc mc pm c 14 12 9 3 3 High precision and laboratory servo sys tems 17 15 11 6 3 6 Robotic and servo systems 18 16 13 7 10 12 Very sensitive high reliability systems 20 18 14 9 12 15 Sensitive reliable systems 21 19 16 10 15 25 General equipment of limited reliability 23 21 18 12 25 40 Low pressure equip ment not in continu ous service The table above is a guide to the recommended filtration level for various hydraulic components together with typical target system cleanliness levels 52 HYDRAULIC SYSTEM TARGET CLEANLINESS LEVELS APPENDIX G New ISO Medium Test Dust and its effect on ISO Contamination Control Standar
31. ined Using ACFTD ISO NIST MTD SO 4402 1991 IS 11171 um pm c The table shows the correlation be i tween Particle Sizes Obtained using 3 51 ACFTD ISO 4402 1991 and NIST re ISO 11171 Calibration Methods aa 8 84 ee 9 91 This table is only a guideline The exact 10 98 relationship between ACFTD sizes and the a o NIST sizes may vary from instrument to in PA a strument depending on the characteristics ie F of the particle counter and original ACFTD 12 I calibration i 12 20 17 21 18 22 19 23 19 24 20 25 21 26 22 27 22 28 23 24 24 25 26 27 27 28 29 29 30 31 31 NQr ob uonpibobiaobunsobunobRavo twa Other Standards Although the ISO 4406 1999 standard is being used extensively within the hydraulics industry other standards are occasionally required and a compar ison may be requested The following table gives a very general comparison New ISO MEepruM TEST DUST AND ITS EFFECT ON ISO 57 APPENDIX G but often no direct comparison is possible due to the different classes and sizes involved XM AJI section headings indicated with are reproduced by kind permission of British Fluid Power Association from BFPA P5 1999 issue 3 Appendix 44 58 New ISO Meprium Test Dust AND ITS EFFECT ON ISO APPENDIX G ISO 4406 1999 DEF STD 05 42 XH NAS 1638 5 SAE 749 8 Table A Table B ISO 11218 6 13 11 08 2 14 12 09 3 0 15 13 10 4 1 16 14 09 400F 16 14 11 5 2 17 15 09 400 17 15
32. iques and procedures e More accurate calibration e Improved levels of particle count reproducibility with different equip ment e More accurate and consistent filter test results Effect on Industry The introduction of ISO MTD has necessitated changes to certain ISO stan dards 54 New ISO Meprium Test Dust AND ITS EFFECT ON ISO APPENDIX G The standards affected include ISO 4402 1991 Hydraulic fluid power Calibration of liquid automatic particle counters ISO 4406 1987 Hydraulic fluid power Code for defining the level of contamination by solid par ticles ISO 4572 1981 Hydraulic fluid power Filters Multi pass method for evaluating filtration performance of a filter element In order that users are not confused by the changes to these standards par ticularly by reference to them in technical literature ISO is updating 4402 to ISO 11171 and 4572 to ISO 16889 Two standards which concern our industry are the ISO 4406 coding system and the new ISO 16889 Multi pass test As APCs will henceforth count parti cles more accurately there will now be a change in the way sizes are labelled In the new ISO 4406 1999 new calibration sizes are used to give the same cleanliness codes as the old calibration sizes of 5 and 15 um In this way there will be no necessity to change any system cleanliness specifications It is proposed that the cleanliness codes for APCs will be formed from three particle counts at
33. l basis in a given size bracket NAS1638 CLEANLINESS CODE SYSTEM 45 APPENDIX D SAE AS4059 REV E Cleanliness Classification For Hydraulic Fluids Vill This SAE Aerospace Standard AS defines cleanliness levels for particulate contamination of hydraulic fluids and includes methods of reporting data re lating to the contamination levels Tables 1 and 2 below provide the Max imum Contamination Limits Particles 100ml of differential and cumula tive particle counts respectively for counts obtained by an automatic particle counter e g LPA VII The information reproduced on this and the previous page is a brief extract from SAE AS4059 Rev E revised in May 2005 For further details and explanations refer to the full Standard 46 SAE AS4059 REV E CLEANLINESS CLASSIFICATION FOR APPENDIX D Size range um c 6 14 14 21 21 38 38 70 gt 70 Class 00 125 22 4 1 0 0 250 44 8 2 0 1 500 89 16 3 1 2 1 000 178 32 6 1 3 2 000 356 63 11 2 4 4 000 712 126 22 4 5 8 000 1 425 253 45 8 6 16 000 2 850 506 90 16 7 32 000 5 700 1 012 180 32 8 64 000 11 400 2 025 360 64 9 128 000 22 800 4 050 720 128 10 256 000 45 600 8 100 1 440 256 11 512 000 91 200 16 200 2 880 512 12 1 024 000 182 400 32 400 5 760 1 024 Table D I AS4059E Table 1 Cleanliness Classes for Differential Particle Counts SAE AS4059 REV E CLEANLINESS CLASSIFICATION FOR 47 APPENDIX D Size LM C gt 4 gt 6 gt 14 gt 21 gt
34. nents on IX Tt should be noted that the recommendations made in this table should be viewed as starting levels and may have to be modified in light of operational experiences or user requirements RECOMMENDATIONS 49 APPENDIX E fluids which are cleaner than those stated will increase life However the di versity of hydraulic systems in terms of pressure duty cycles environments lubrication required contaminant types etc makes it almost impossible to predict the components service life over and above that which can be rea sonably expected Furthermore without the benefits of significant research material and the existence of standard contaminant sensitivity tests manufac turers who publish recommendations that are cleaner than competitors may be viewed as having a more sensitive product Hence there may be a possible source of conflicting information when com paring cleanliness levels recommended from different sources The table gives a selection of maximum contamination levels that are typ ically issued by component manufacturers These relate to the use of the correct viscosity mineral fluid An even cleaner level may be needed if the operation is severe such as high frequency fluctuations in loading high tem perature or high failure risk 50 RECOMMENDATIONS APPENDIX F Hydraulic System Target Cleanliness Levels Where a hydraulic system user has been able to check cleanliness levels over a considerable period t
35. s the Operations screen as described on page 11 and press ALARM OPTIONS The Alarm Options screen will be displayed 1 Alarm Mode 1 2 Dirty Alarm Level ISO 0 3 Dirty Alarm Level NAS1638 AS4059E 1 0 4 Dirty Alarm Level AS4059E 2 1A 2B 3C 4D 5E 6F Press a Key to Choose or 0 to Exit XN d The LPA includes two solid state relays for connections to an ex ternal circuit These can be arranged to function as follows 1 Alarm Mode 0 Selecting option 0 switches relays 1 and 2 always off 2 Alarm Mode 1 Selecting option 1 will configure relays 1 and 2 as described on page 31 refer to the examples given on the simple wiring diagrams 28 Alarms Clean alarm levels are set in accordance with the instructions start ing on page 22 Alarm mode 1 is used in conjunction with the Con tinuous Sampling test type enabling the Analyser to operate contin uously until the specified clean alarm level is achieved Alarm Mode 2 Selecting option 2 arranges the relays to operate when the Clean and Dirty alarm levels are reached exceeded Alarm mode 2 will normally be used in conjunction with the Continuous test type refer to page 20 but can be used with all other test types as well Set the Clean and Dirty alarm levels by inputting the desired levels in to both the Test options screen page 14 and the Alarm options screen also setting the appropriate result format to ISO NAS or AS4059 as described on pag
36. ss the thermal printer remove the four thumbscrews securing the cover and serrated paper cutter Thermal printer paper is sensi tised on one side only and must be fed into the printer mechanism as shown below SERRATED CUTTER THERMAL PRINT HEAD ROLLER Figure 11 1 Printer Mechanism Using a finger press down on the print head spring at position A and tilt the print head to the open position by pulling it back at point B B A Figure 11 2 Print Head Spring Feed the paper under the roller and pull the paper end out of the mechanism Return the print head back to its normal position by pressing on the green lever at point C Ensure that the print head spring has returned to the position shown above Printer Paper 37 IMPORTANT The thermal printer must not be operated with out paper as this will damage the printer Therefore replace the roll when the end of the roll indication appears on the paper 38 Printer Paper 12 12 1 12 2 Computer Analysis Software Installation Install software on to a suitable PC running Windows XP or later Follow instructions as detailed in the LPA View User Manual Results Download Connect RS232 cable to LPA and PC via an appropriate port Switch ON the LPA Switch ON the PC Launch LPA View software From File select Upload Data Transfer Screen will be displayed Select appropriate COM Port Select Transfer Data The Analyser
37. ternal circuits Wiring 31 32 3 pin plug mure W Relay 2 hs o jH Socket case wall supplied loose Example 1 Bulb illuminates when Clean alarm level is achieved completed status and is off during sampling 3 pin plug Relay 1 e in gt y o T7 w gt e Relay 2 nE i Socket case wal if supplied loose Example 2 Bulb illuminates during sampling and extinguishes when Clean alarm level is achieved completed status is shown on LPA Relay 1 is also closed during Normal Dynamic Triple amp Bottle and Short test types Relay will open when stop button is pressed Wiring 8 Bottle Sampling An alternative to operating on line is to use MP Filtri UK s Bottle Sampling Unit to test oil contained in bottles Refer to the separate User Guide for details Bottle Sampling 33 9 Data Logging Press the Log button 6 to access results stored within the LPA s memory the Log Screen will be displayed 1 Transfer Log 2 Clear Log 3 Clear Last 4 Recall 5 Print Press a Key to Choose or 0 to Exit sa d To view the contents of the LPA s memory progress through the following routine e Select 4 Recall and enter the number of the test to be retrieved e If the test number is not known enter the last test number and scroll through the memory using Next or Previous to se lect the required result e To print the result press 0 exit
38. tinuous Sampling The LPA can be selected for continuous testing at set time intervals Once continuous sampling has started the LPA s flush valve auto matically opens and closes before each test This allows representa tive fluid to reach the sensing arrangement before the 15ml sampling test commences The flush valve automatically opens at the end of the sampling cycle and remains open whilst the LPA is emptying to waste the sample fluid from the previous test Additionally depending on the time set for Minutes Between Tests the flush valve operates as follows e Time set to 0 At the end of the Analyser s emptying cycle the Flush valve au tomatically closes and the next sampling test immediately starts e Time set to between 1 and 5 After the Analyser s emptying cycle has finished the Flush valve remains open for the time set then automatically closes before the next sampling test e Time set to between 6 and 30000 Flush valve automatically closes after the emptying cycle has finished and remains closed until 5 minutes before the next sam ple test is programmed to start The Flush valve status is indicated by the push button illumination Not illuminated means valve closed illuminated means valve open The servo motor operating the Flush valve exhibits a slight ticking noise both when it is open and closed This is normal Continuous Sampling 19 4 1 Important Do not connect Waste Fluid Hose to
39. turned off a copy of the results is obtained by pressing PRINT button 4 PAPER Ejects printer paper by three blank lines 5 SET Selects settings screen see page 11 6 LOG Selects Data Logging screen see page 34 Online Operation 9 Transfer log downloads memory to software package Clear log Clears memory Clear last Clears last result Recall Recalls results from memory Print Prints recalled results CONTRAST Adjusts the screen contrast 7 Darker 8 Lighter m LOW BATTERY INDICATOR see page 35 2 This is not needed on new units 3 Provided unit has not been switched off 10 Online Operation 3 2 3 2 1 3 2 2 Analyser Settings Press the SET button 5 to program the Analyser to your require ments The main Settings Screen will be displayed To alter the Analyser settings progress through the following routine from this screen 1 Test Ref machine one 2 Test Number 123 3 Time and Date 4 Result Presentation Options 5 Test Type Normal 6 Test Options 7 Alarm Options Press a Key to Choose or 0 to Exit Figure 3 2 Main Settings Screen Test Ref Press 1 then input your reference details e g MACHINE 14 RETURN 15 characters maximum Test Number Press 2 then input the required test number e g 123 lt The Test Number will automatically increment for each successive test Online Operation 11 3
40. y until CONTINUOUS is selected Test Options 6 Press relevant key to switch between option selections Enter MINUTES BETWEEN TESTS Press 1 then input the time in minutes that is required between the end of a test and the beginning of a new test Input a value between 1 and 30000 followed by lt RETURN Selects between LOG EVERY TEST ON and LOG EVERY TEST OFF Selecting Log Every Test Off will only store the results of the test when the Clean alarm Level is achieved this saves memory space Confirm Cleanliness Level Press 3 to turn CONFIRM CLEANLINESS LEVEL On and Off 22 Continuous Sampling Selecting CONFIRM CLEANLINESS LEVEL ON instructs the Analy ser to repeat the sampling cycle until the Clean alarm level has been achieved in two consecutive samples before the Completed status is displayed Selecting CONFIRM CLEANLINESS LEVEL OFF permits the Clean alarm to be achieved only one time be fore the Completed status is displayed Clean Alarm Level ISO Press 4 then input desired Clean Alarm Level in the Code for mat Number Number Number any code number combination can be input from code 5 to 24 example 10 9 5 RETURN For continuous testing until the ISO Code is achieved selected ISO Format as described under the previous section on page 11 Analyser Settings instruction 4 1 Testing will automatically continue until each of the three num bers in the Code have been achieved or better
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