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Morehouse has a collection of tools, videos & documentation to assist customers in optimizing their calibration & testing products. Use the filter on the left to assist in finding the specific support item needed.
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Force Calibration for Technicians and Quality Managers eBook

This eBook, available on Amazon, contains guidance on factors that ensure repeatable results through the entire measurement chain. For force-measuring devices, there are various mechanical and electrical interfaces that matter. At the time of calibration, these consist of:

  • Selecting the right calibration method
  • The loading conditions
  • Adapters
  • Verification of the adjustments
  • Meters
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Why a 4:1 TUR is not enough: The importance of analyzing the probability of false accept risk

Several organizations and publications reference or insist on maintaining a 4:1 Test Uncertainty Ratio (TUR) without understanding the level of risk that they may be subjecting themselves to. The general thought is if the lab performing the calibrations has standards at least four times better then what they are calibrating that everything is good. This paper discusses TUR, PFA Risk, and why the location of the measurement matters. We will discuss two managed risk guard banding methods (5 & 6) found in the ANSI/NCSL Z540.3 Handbook. We will show that a 4:1 TUR is not enough and can result in a 50 % risk.

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An Introduction to the Differences Between the Two Most Recognized Force Standards

Morehouse has been performing both ASTM E74 and ISO 376 calibrations for more than fifteen years. We have been calibrating in accordance with the ASTM E74 standard since its introduction in 1974, and performing ISO 376 calibrations since sometime in early 2000. Until recently, we assumed that the rest of the world and force community knew that the standards were completely different and that either standard could not be substituted for another. This paper explains those differences in more detail.

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What is measurement risk?

Measurement decision risk as probability that an incorrect decision will result from a measurement. Are you telling your customers instrument passes without considering measurement uncertainty? If taken to court, are your measurement defensible? This paper examines the proper way to make statements of compliance.

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Uncertainty Propagation for Force Calibration Systems

Having troubles understanding measurement uncertainty and how to put together a budget? This paper examines all of the components required to put together a full calibration and measurement capability (CMC) reviewed by Accreditation Bodies for your scope. This is a guide to calculating force measurement uncertainties and was published in Cal Lab magazine.

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Load cell dual-range calibration - force potential measurement error

What you need to know about molecule excitement decline and dual range calibrations. Article from Test Magazine May 2016 issue.

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Force Calibration Guidance for Beginners

If you are new to force calibration or metrology, the information can be overwhelming. Since force calibration is mechanical in nature, there are many factors to consider. This guidance document provides a basic understanding of force calibration, the methods and instruments used, industry standards, and best practices.

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Conditions Methods and Systems that Impact Force Calibration

This force calibration guidance for Technicians and Quality Managers covers more advanced force calibration topics including loading conditions, adapters, verification of the adjustments, indicators, measurement uncertainty, selecting the right calibration method.

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ISO 376 Guidance and Uncertainty Measurements Relating to Force Equipment

There is a common misconception about equipment “being compliant” with ISO 376.  Many struggle with how to use an ISO 376 calibration and put together an uncertainty budget.  This document provides guidance for the evaluation of measurement uncertainty in the calibration of force-measuring instruments to support CMC in the scope of accreditation and calibration and/or measurement certificates/reports.

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Potential Measurement Errors in Force Calibration

Article in test magazine from Oct-Nov 2015 issue.

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Load Cell Troubleshooting Guidance

Morehouse technicians have seen many different load cell issues and have lots of experience identifying and fixing the problems. With this experience, we developed a 7 Step Process for Troubleshooting a Load Cell, which will reduce the hours wasted troubleshooting a nonworking load cell to diagnose the problem.

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Force Calibration Adapters Guidance

Force-measuring instruments are susceptible to errors from improper adapters, misalignment, and not exercising the instrument to full capacity. This document provides guidance for replicating how the force-measuring instrument is used, keeping the line of force free from eccentric error, and overcoming safety concerns with old adapters.

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Guidance on Uncertainty Budgets for Force Measuring Devices - A2LA

This document provides guidelines for identifying all significant contributions to measurement uncertainty in the calibration of force-measuring instruments. It serves as a means for laboratories to be compliant with A2LA R205 – Specific Requirements: Calibration Laboratory Accreditation Program.

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How to Develop an Uncertainty Budget for a Morehouse Calibrating Machine

This document identifies all significant contributions to measurement uncertainty when using a Morehouse calibrating machine. It describes what is needed to achieve a measurement uncertainty of better than 0.02 % of the applied force.

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