New Cosmos Electric SDM-72 Instruction Manual Download Page 3

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1. Introduction

We thank you for purchasing the Portable Grease Steel Dust Meter Model SDM-72 for

the measuring of steel dust in the lubricating grease.

The Portable Grease Steel Dust Meter employs a magnetic balance type electromagnet

induction method as the measuring principle, and is a useful simplified diagnosis tool for

the inspecting the abrasion status of the bearings and gears.

The steel dust can be measured simply by collecting from the waste (expelled) grease

sample in a sampling container when fresh grease is applied to the machinery.

This Manual describes the specifications, functions and operating instructions, carefully

read and thoroughly understand this manual before operating the Portable Grease Steel

Dust Meter SDM-72

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Summary of Contents for SDM-72

Page 1: ... Keep this instruction manual available for quick reference when needed Read this instruction manual carefully before use Instruction Manual No SDM 72CEET ...

Page 2: ... 1 Installing Batteries 4 5 2 Battery Check 4 5 3 Measurement 5 5 4 Collection of Grease Sample 7 5 5 How to Fill the Sampling Container 7 6 Error Message 9 7 Handling and Storage 10 8 Troubleshooting 11 9 Warranty 12 10 Specifications 13 Appendix 14 1 Measuring Principle 14 2 Metal Materials Measurable 15 3 Practical Use 16 ...

Page 3: ... principle and is a useful simplified diagnosis tool for the inspecting the abrasion status of the bearings and gears The steel dust can be measured simply by collecting from the waste expelled grease sample in a sampling container when fresh grease is applied to the machinery This Manual describes the specifications functions and operating instructions carefully read and thoroughly understand thi...

Page 4: ... grease sample and inserted for instant measurement Compact portable instrument and useful for field measurement 3 Safe Operation Explanation of symbols The following symbols are used for safety purposes DANGER Indicates a hazardous situation that may result in serious injury or death if not avoided WARNING Indicates a potentially hazardous situation that may result in serious injury or death if n...

Page 5: ...e low battery status below 3 6V with lighting or blinking 5 Calibration buttons Calibration buttons of the indicated value The instrument is calibrated at factory prior to shipment Do not attempt to make any calibrations 6 DC jack The exclusive jack to accept the plug of AC adapter Japan use only 7 Battery compartment Accommodates 4 AA size dry cell batteries 8 Sampling container A quantitative sa...

Page 6: ...y voltage display Battery voltage is 5 6 BATTERY alarm lamp If the voltage is higher than 3 6V it is ready to start measurement BATTERY alarm lamp will be lights up when the voltage is lower than 3 6V Replace batteries When the voltage drops below 3 2V BATTERY alarm lamp will blink and buzzer sounds It needs to replace batteries for reliable measurement Press the batteries with battery lid and sli...

Page 7: ...se facing upward same direction as the front surface of the instrument 3 An audible beep will sound for 2 3 seconds after the sampling container has been inserted indicating the measurement has been completed and the reading is held read and record the reading 4 When the sampling container with the holder is removed from the sample port the display will return to zero by the automatic zero adjustm...

Page 8: ...may effect the measurement Hold the ejected portion of the sampling container when handling and for insertion If the collected sample grease is of high temperature allow it to cool to normal room temperature before measurement CAUTION This instrument employs the electromagnetic induction method as the measuring principle and should not be operated in the vicinity where a strong electromagnetic wav...

Page 9: ...er of the freshly supplied grease Therefore the collect and use the discolored waste grease for the measuring purpose 5 5 How to Fill the Sampling Container The sample container has a quantitative groove to accommodate the waste grease sample use the spatula and fill this groove with a sufficient amount of waste grease Use the edge of the spatula and scrape off the excessive waste grease to obtain...

Page 10: ...adings may vary according to the sampling position as the steel dust in waste grease is not distributed evenly Measure the value at least 3 to 4 times and take an average or maximum value Refer to Appendix for correlation between the abrasion of the bearing and steel dust concentration in the grease 8 ...

Page 11: ...removed before the measurement is completed Remove the syringe holder again and restart measurement P OFF The power supply was forced to shut down due to the power supply voltage drops Turn the selector switch to OFF and then turn to BATT or MEAS again Err E Malfunction Writing error of non volatile memory Turn the selector switch to OFF and then turn to BATT or MEAS again If the indication is sti...

Page 12: ...change the structure or electric circuits Do not leave the instrument in high temperature or highly humid places Keep the instrument away from radical temperature or humidity changes walkie talkie mobile phone or its performance may be adversely affected Do not drop hit or apply a strong mechanical shock to the instrument or its performance may be adversely affected The instrument is not drip proo...

Page 13: ...rt again page 4 Insert batteries correctly with respect to their polarity page 4 The battery alarm lamp is lit or blinking when selector switch is set to BATT or MEAS Battery life Replace batteries page 4 The reading of the display does not stabilize in the measurement The temperature of the grease sample is too high to measure The sampling port becomes warm Lower the temperature of the grease sam...

Page 14: ...s After examination of an allegedly defective product returned to New Cosmos with freight prepaid should the product fail to conform to this warranty the customer s only remedy and New Cosmos s only obligation shall be at New Cosmos s sole option replacement or repair of such non conforming product or refund of the original purchase price of the non conforming product In no event will New Cosmos b...

Page 15: ...omic absorption method rdg measured value Zero adjustment Automatic adjustment Sample volume 0 8 ml Power Source 4 AA size dry batteries Battery Life Approx 30 consecutive hours With alkaline batteries Operating Temperature 0 to 40 degrees C Dimensions 84 W x 40 D x 190 H mm Weight Approx 500g including batteries Standard Accessories Spatula for collecting grease sample Sampling container SMC 01 G...

Page 16: ...n the vicinity of the center detection coil Normally the center detection coil does not generate an induction voltage on the other hand when the sampled oil containing iron particles is inserted into the exciter coil the magnetic field is offset by the magnetic permeability variation and an induction voltage is generated in the detection coil The induction voltage can measure the concentration of ...

Page 17: ...netism NA 1 Iron oxide γ Fe2O3 Fe3O4 Ferromagnetism OK Sodium calcium lithium molybdenum Para magnetism NA 2 1 Iron oxide has several isomers as can be noted from the table above there are substance that can be measured with the Oil Steel Dust Checker and substance that can not be measured Specially in case the environment allows the oxidation of iron particles easily and where the collected sampl...

Page 18: ... improve the accuracy of diagnosis when jointly used with the vibration method for medium and high speed rotation machinery Preliminary diagnosis for SOAP method ferrography method etc Useful tool for preliminary diagnosis as a cost saving for maintenance Example of various use Mixer Kneader Rotary drier Paper marking machinery Mill Crusher Refiner Metal rolling machinery Conveyor Crane Hoist Lift...

Page 19: ...More than 100 More than 300 Countermeasure for improvement of lubrication precision diagnosis at short cycle management 17 17 2 Correlation between the Abrasion of the Bearing and Steel Dust Concentration in the Grease Table 2 shows the inspection results of correlation between the abrasion of the bearing and steel dust concentration by disassembling and inspecting the bearing of various rotating ...

Page 20: ...ble 4 Cycle of Measurement of the Steel Dust Kind of Rotary Machinery Cycle of Measurement Low speed rotary machinery at normal temperature 3 6 months Medium and high speed rotary machinery at normal temperature 3 6 months Low speed rotary machinery at high temperature 1 4 months Concentration in the Grease When an abnormal trend of the measured steel dust concentration in the grease is detected t...

Page 21: ...e progress of abrasion the steel dust concentration shows a conspicuous increase The management trend is possible by obtaining the increase trend of steel dust concentration in the early stage of abrasion by conducting an appropriate lubrication countermeasure at the early stage of abrasion for the life extension of the bearing The graph below shows the management trend of the steel dust concentra...

Page 22: ... 20 MEMO 20 ...

Page 23: ... 21 MEMO 21 ...

Page 24: ...Date Revision SDM 72 CEET June 2008 00 July 2012 01 August 2013 02 Manufacturer New Cosmos Electric Co Ltd 2 5 4 Mitsuya naka Yodogawa ku Osaka 532 0036 Japan TEL 81 6 6309 1505 FAX 81 6 6308 8129 http www new cosmos co jp en index html ...

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