Ingersoll-Rand 4575759 user manual Dynamic Audit, To Dynamically Audit Residual Torque

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Sensor I® Expert User Manual

Dynamic Audit:

The Dynamic Audit feature of the Expert wrench audits residual torque currently on the fastener after relaxation and other effects have taken place. On a very hard joint that is audited soon after tightening, this will consistently equate to installation torque. On a very soft joint or a joint audited long after the initial tightening, it may be considerably reduced.

Standard methods are open to variance from operator influence. Experienced auditors try to overcome these difficulties by watching the socket very closely and moving very cautiously. Other operators may have a tendency to pull the wrench until the expected value is reached. Although that specific bolt may end up with the correct torque, it does not tell Quality Control about any possible problems that are occurring with the fastening equipment on line.

The Expert wrench helps eliminate this operator influence by capturing the residual torque after a very small angle is turned regardless of how far or fast the wrench is pulled. In other words, all that is required is a quick pull and the processor takes a "snapshot" of the dynamic torque at the pre-set angle of turn.

To Dynamically Audit Residual Torque:

A table of audit angle values is provided for your convenience. The guiding principle is to set a sufficient angle of turn to ensure the bolt threads are moving when the torque snapshot occurs. The longer the fastener, the greater the required angle.

To ensure that an accurate reading is received, the following procedure should be followed:

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Contents Sensor I Expert Electronic Wrenches Page Sensor I Expert Form 7266 Version 005, 08/04Page Page Page Wrench Reset Dynamic Audit To Dynamically Audit Residual Torque≤ 2d To Tighten to Yield To Tighten to a TorqueTo Tighten to an Angle Page Page Table of Contents Page Table of Contents Battery Charging Chapter IntroductionPage Introduction Page Tool Description Page Technical Data 125 250 400 Tool DescriptionPage Functions of Components Expert 125, 250 and 400 ModelsExpert Control System Status Lights Mode Selector Switch Digital Display Page Membrane Keys Audible Alarm Item no Longer in USE Page Operation Instructions Page Wrench Operation Instructions General InformationSetting Torque Units Torque Control Tightening Procedure Page Dynamic Audit Page Yield Control Page Angle Control Page Resetting the Cycle Counter Cycle CounterSetup and Viewing Quality Control Limits Quality Control Limits and StatisticsDeleting Quality Control Limits Use of Quality Control Limits Statistics Mean Standard Deviation Process Capability IndexSetup and Storage of Custom Tightening Modes Custom Tightening ModesRetrieving Custom Tightening Modes Identifying Custom Tightening ModesClearing Custom Tightening Modes Setup of Wrench for Data Upload Data Storage and RetrievalData Out During Tightening Last two numerals are not shown on the wrench displayData Out at End of Tightening Parameter Dump End of Tightening Data Dump Tightening Curve Storage Tightening Curve Data Dump Setup of a Torque Multiplier Torque Multiplier FunctionPage Left Hand Fasteners Use of a Torque MultiplierReset Adjustment EVS-models only Page Reset Adjustment Value Models 125, 250 Page Battery Charging Page Battery Charging Page Diagnostics Troubleshooting Page Diagnostics and Troubleshooting Torque Channel A/D Display Custom Mode #200Angle Reference Arm Test Mode EA Models, Custom Mode IntroductionBattery Level Test Mode Custom Mode #204 EZ Angle Test Mode Custom Mode #207Membrane Keypad Test Mode Custom Mode #208 Buzzer and LED Test Mode Custom Mode #209Software Version Number Test Custom Mode #211 Time-out Adjustment Custom Mode #212Page Calibration Page Calibration General InformationTorque Calibration Page Angle Reference Arm Calibration EA models EZ Angle Calibration EVS modelsPage Page Appendix a Sample Data ReportsPage Appendix a Sample Reports Parameter DumpEnd of Tightening Data Dump Torque Tightening Curve Data Dump Torque Units NmData Out at End of Tightening Data Out During TighteningPage List Setup Modes Appendix BPage Appendix B Custom ModesCustom Mode Spare Parts List Appendix CPage Spare Parts Listing Model Appendix CSpare Parts Listing Model 40 E40-STRPE40-PR-LABEL Spare Parts Listing Model Spare Parts Listing Model 125 Spare Parts Listing Model Spare Parts Listing Model 250 Spare Parts Listing Model Spare Parts Listing Model 400 Page Service Centers Appendix DPage Service Centers Appendix DSensor I Expert Electronic Wrenches Save These INSTRUCTIONS. do not Destory Ingersoll-Rand Company