Ingersoll-Rand 4575759 user manual Statistics, Mean Standard Deviation Process Capability Index

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Sensor I® Expert User Manual

Statistics

The following statistical information is available for each custom and primary tightening mode:

Mean			x
Standard Deviation			σ
Process Capability Index			Cp
Process Capability Index			CpK

NOTE

Cp and CpK are not available for angle in Dynamic Torque Audit mode as the control limits for low angle (LA) and high angle (HA) are not used.

The statistical calculations are based on all stored final tightening data points for that tightening mode. Lower and upper control limits used for the calculation of the Process Capability Indices, Cp and CpK, use the values of low torque (LT), high torque (HT), low angle (LA) and high angle (HA) entered for each custom and primary tightening mode.

The statistics can be viewed as follows:

1.Select desired custom or primary tightening mode and confirm that the cycle count is a number above zero.

2.While holding in the Reset button, press the x key. The display will show the x symbol on the top of the display and the Pk symbol on the bottom of the display. The main display will show the mean value of the torque which is shown for approximately 1.5 seconds, after which the process capability, Cp, is shown until the Reset button is released.

3.Repeat the above process to display the mean, x, and process capability, Cp, for angle (An).

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Contents Sensor I Expert Electronic Wrenches Page Form 7266 Version 005, 08/04 Sensor I ExpertPage Page Page Wrench Reset To Dynamically Audit Residual Torque Dynamic Audit≤ 2d To Tighten to a Torque To Tighten to an AngleTo Tighten to Yield Page Page Table of Contents Page Table of Contents Battery Charging Introduction ChapterPage Introduction Page Tool Description Page Tool Description Technical Data 125 250 400Page Expert 125, 250 and 400 Models Functions of ComponentsExpert Control System Status Lights Mode Selector Switch Digital Display Page Membrane Keys Audible Alarm Item no Longer in USE Page Operation Instructions Page General Information Wrench Operation InstructionsSetting Torque Units Torque Control Tightening Procedure Page Dynamic Audit Page Yield Control Page Angle Control Page Cycle Counter Resetting the Cycle CounterQuality Control Limits and Statistics Setup and Viewing Quality Control LimitsDeleting Quality Control Limits Use of Quality Control Limits Mean Standard Deviation Process Capability Index StatisticsCustom Tightening Modes Setup and Storage of Custom Tightening ModesIdentifying Custom Tightening Modes Retrieving Custom Tightening ModesClearing Custom Tightening Modes Data Storage and Retrieval Setup of Wrench for Data UploadLast two numerals are not shown on the wrench display Data Out During TighteningData Out at End of Tightening Parameter Dump End of Tightening Data Dump Tightening Curve Storage Tightening Curve Data Dump Torque Multiplier Function Setup of a Torque MultiplierPage Use of a Torque Multiplier Left Hand FastenersReset Adjustment EVS-models only Page Reset Adjustment Value Models 125, 250 Page Battery Charging Page Battery Charging Page Diagnostics Troubleshooting Page Introduction Diagnostics and TroubleshootingTorque Channel A/D Display Custom Mode #200 Angle Reference Arm Test Mode EA Models, Custom ModeBuzzer and LED Test Mode Custom Mode #209 Battery Level Test Mode Custom Mode #204EZ Angle Test Mode Custom Mode #207 Membrane Keypad Test Mode Custom Mode #208Time-out Adjustment Custom Mode #212 Software Version Number Test Custom Mode #211Page Calibration Page General Information CalibrationTorque Calibration Page EZ Angle Calibration EVS models Angle Reference Arm Calibration EA modelsPage Page Sample Data Reports Appendix aPage Sample Reports Parameter Dump Appendix aEnd of Tightening Data Dump Torque Torque Units Nm Tightening Curve Data DumpData Out During Tightening Data Out at End of TighteningPage Appendix B List Setup ModesPage Custom Modes Appendix BCustom Mode Appendix C Spare Parts ListPage Appendix C Spare Parts Listing ModelE40-STRP Spare Parts Listing Model 40E40-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 Appendix D Service CentersPage Appendix D Service CentersSensor I Expert Electronic Wrenches Save These INSTRUCTIONS. do not Destory Ingersoll-Rand Company