CMS/User Guide - Filterteknik

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• See the figures at the start of this section for examples of wherethe CMS could be connected.• If there is a pair of connections in the hydraulic circuit that operateswith a differential pressure near to that calculated, then theCMS can be connected there.• Alternatively, create the pressure drop by modifying the hydraulicsystem. For example, insert a check-valve in the circuit with a 4bar spring. 12 The "component’’ could also be a filter, a restrictoror even a piece of piping if it has a suitable pressure drop acrossit.• If none of these options is feasible, then an active flow controllerwill likely be needed, see 15.3.• Otherwise connect the CMS across the points identified, takingcare to maintain an upward flow of oil through the unit (this reducestrapped air).Of course in a real system the pressure and viscosity will varywith temperature and operating conditions. But since the workingflow range of the CMS is very wide, this should not be aproblem provided it remains within range. On the graph thearea between upper and lower lines represents the usable operatingregion for the CMS, with the middle line being ideal.The differential pressure and the viscosity can vary from theideal, provided the system stays within the upper and lower lines.This ensures the flow stays within the working range of 20 - 400ml/min. It can be seen that the unit will accommodate a 20:112 In fact the CMS will work perfectly well at a lower flow, for example 100ml/minute,in which case a 2 Bar check-valve could be used.52 Hydraulic Connection
variation in either viscosity or differential pressure during operation.Differential Pressure (Bar) Across Ports1001010.10.01400ml/minute (max. flow)200ml/minute (ideal flow)20ml/minute (min. flow)0.0011 10 100 1000Viscosity (cSt)Figure 15.4ratesDifferential Pressure vs Fluid Viscosity, for various flow15.2 Manual Flow ControlAnother possibility is to fit a simple manual flow control (flow restrictor)to the outlet of the CMS.• This should only be done where the available pressure is lessthan twice the maximum value calculated. This is because thesmall orifice size needed to control the flow from a pressurelarger than this has a risk of blockage.• The flow controller must be fitted to the outlet only. If fitted tothe inlet it will have a filtering effect.• The flow controller must be fitted directly to the CMS outlet port.Hydraulic Connection 53
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 50 and 51: 15.1 Flow Rate15.1.1 SummaryFor the
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

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