CMS/User Guide - Filterteknik

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17 Cycle Time and Flow RateConsiderationsThe set Test Duration is the amount of time for which particle countsare accumulated, before the test result is updated. The default of 120seconds is likely to be suitable for most applications. However it ispossible to set other values.A shorter time enables the unit to respond more quickly to variationsin cleanliness. This may be desired in order to reduce the producttest time in a production line situation.A longer test time enables the unit to average out variations in cleanlinessand produce a more stable result. This is especially true forthe larger particle sizes. In clean systems there are very few of these,so a large amount of fluid needs to be sampled in order to count astatistically significant number.Another factor is the flow rate. This can be traded off with cycletime, since a higher flow allows the same amount of fluid to be sampledin a shorter time."Very Clean’’ Systems – Longer test times / higher flows needed."Normal’’ or "Dirty’’ Systems – Shorter test times or lower flowsare acceptable.This relationship is shown in Figure 17.1.18 This means >20 particles counted as per ISO 4406:199958 Cycle Time and Flow Rate Considerations
Test Time (seconds) for 20 counts1000100400ml/minute (max. flow)200ml/minute (ideal flow)20ml/minute (min. flow)100 1 2 3 4 5 6 7ISO CodeFigure 17.1Test Time needed for Reliable Indication 18 by ISO codeCycle Time and Flow Rate Considerations 59
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CMSContamination Monitoring System
Page 3 and 4:
Contents1 Introduction 7•Operatin
Page 5:
E Recommendations 69F Hydraulic Sys
Page 8 and 9: 2 How to OrderExample: CMS - W M K
Page 10 and 11: It comprises a USB:RS485 interface
Page 12 and 13: Moisture &TemperatureMeasurementDat
Page 14 and 15: 4 Status LEDAll CMS versions have a
Page 16 and 17: 5 Front Panel Operation5.1 Result D
Page 18 and 19: SimpleDetailedFigure 5.4 AS4059E Ta
Page 20 and 21: 6 Water SensorCMS-W models measure
Page 22 and 23: 7 Data LoggerThe CMS includes a bui
Page 24 and 25: 9 USBi Optional Computer USBInterfa
Page 26 and 27: is separately available as a pre-wi
Page 28 and 29: 11 PC Software OperationThe Remote
Page 30 and 31: 12 SettingsThe CMS can be reconfigu
Page 32 and 33: The factory set value of 2 minutes
Page 34 and 35: large particles in the system. When
Page 36 and 37: NAS1638 can be used by selecting th
Page 38 and 39: This allows the CMS to switch exter
Page 40 and 41: Turns on When Test Complete ≤Lowe
Page 42 and 43: • If there is no suitable differe
Page 44 and 45: 14.1 DC PowerDC power is connected
Page 46 and 47: supplies can be used to power each
Page 48 and 49: Other ways to start a test are:•
Page 50 and 51: 15.1 Flow Rate15.1.1 SummaryFor the
Page 52 and 53: • See the figures at the start of
Page 54 and 55: 15.3 Active Flow ControlThis is onl
Page 56 and 57: allows a system to remotely monitor
Page 60 and 61: 18 Modbus ProgrammingThe CMS can be
Page 62 and 63: Appendix ATypical Water Saturation
Page 64 and 65: Appendix BMicroscope counting exami
Page 66 and 67: Appendix DSAE AS4059 REV.E Cleanlin
Page 68 and 69: Appendix DSize μm(c) >4 >6 >14 >21
Page 70 and 71: Appendix Efluids which are cleaner
Page 72 and 73: Appendix FContamination Correspondi
Page 74 and 75: Appendix GISO therefore defined the
Page 76 and 77: Appendix GTo clarify matters still
Page 78 and 79: Appendix Gbut often no direct compa
Page 80: Appendix G80 New ISO Medium Test Du
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CMS/User Guide - Filterteknik

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