CMS/User Guide - Filterteknik
CMS/User Guide - Filterteknik CMS/User Guide - Filterteknik
15.1 Flow Rate15.1.1 SummaryFor the majority of systems, a differential pressure of a few Bar willgenerate an in-range flow for an CMS connected using two 1.5 meterlengths of Mini-mess hose. The required differential pressure canbe obtained by taking advantage of an existing pressure drop withinthe system. Alternatively one can be created by e.g. inserting acheck valve. The CMS can then be connected across this differentialpressure source.15.1.2 Detailed CalculationsIn general the flow rate of fluid through the CMS needs to be keptwithin the range of the unit (see hydraulic specification 3.2). TheCMS measures the flow during operation, so this can be used tocheck that the flow is correct.A flow that is out of range will be indicated by a fault code (see16.1).Results taken with out-of-range flows are not logged.The flow is entirely generated by the differential pressure betweenthe ends of the pipes used to connect the CMS. The pressure neededto generate an in-range flow can be estimated by assuming a targetflow, and determining the resulting pressure drop across the CMSand connection piping. Use the graph 15.4 to lookup the CMS pressuredrop, and manufacturers data to lookup the piping pressure dropat the desired flow. The sum of these two pressures is the pressureneeded.50 Hydraulic Connection
The user connects the CMS between two points in the hydraulic circuit,that have this pressure difference.In order to use the graph:• Determine the working viscosity of the fluid, e.g. 30 cSt.• Decide on a desired flow rate. 200ml/minute is normally usedsince this is in the middle of the CMS flow range. But 100ml/minuteis also suitable and uses less oil.• Use the graph 15.4 to look up the pressure drop, across the CMSports, at this flow rate and viscosity. E.g. at 30cSt and 200ml/minute,this is 0.4 Bar. The maximum and minimum allowed differentialpressures can also be determined using the 400ml/min and20ml/min lines, respectively.• Determine the additional pressure drop caused by the pipingused to connect the CMS. This may be negligible for 1/4 inchpiping and over, but is very important for "Mini-mess’’ hoses.This information can be found in the manufacturers catalogues.In the case of Mini-mess hoses, at 30 cSt these have a pressuredrop of around 10 Bar per meter per lpm of flow. So a 2m totalhose length would add a pressure drop of 2 × 10 × 0.2 = 4 Bar.(So in this case the pressure-flow relationship is mainly dependenton hose resistance.)• Add the CMS pressure drop to that of the hoses, e.g. 4 + 0.4 =4.4 Bar.When the required pressure drop has been found:Hydraulic Connection 51
- Page 1 and 2: 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 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 58 and 59: 17 Cycle Time and Flow RateConsider
- 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
15.1 Flow Rate15.1.1 SummaryFor the majority of systems, a differential pressure of a few Bar willgenerate an in-range flow for an <strong>CMS</strong> connected using two 1.5 meterlengths of Mini-mess hose. The required differential pressure canbe obtained by taking advantage of an existing pressure drop withinthe system. Alternatively one can be created by e.g. inserting acheck valve. The <strong>CMS</strong> can then be connected across this differentialpressure source.15.1.2 Detailed CalculationsIn general the flow rate of fluid through the <strong>CMS</strong> needs to be keptwithin the range of the unit (see hydraulic specification 3.2). The<strong>CMS</strong> measures the flow during operation, so this can be used tocheck that the flow is correct.A flow that is out of range will be indicated by a fault code (see16.1).Results taken with out-of-range flows are not logged.The flow is entirely generated by the differential pressure betweenthe ends of the pipes used to connect the <strong>CMS</strong>. The pressure neededto generate an in-range flow can be estimated by assuming a targetflow, and determining the resulting pressure drop across the <strong>CMS</strong>and connection piping. Use the graph 15.4 to lookup the <strong>CMS</strong> pressuredrop, and manufacturers data to lookup the piping pressure dropat the desired flow. The sum of these two pressures is the pressureneeded.50 Hydraulic Connection
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