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Category: Force Calibration Standards

Understanding ISO 376 Morehouse Calibration Certificates

Understanding ISO 376 Morehouse Calibration Certificates Morehouse takes exceptional pride in complying with several published standards. We hold ourselves accountable, raise the standard, and put a lot of effort into making the world safer. We are writing this article to help those who might not understand the ISO 376 standard. We have conducted webinars and […]
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Easy to Use ASTM E74 Load Cell Selection Guide

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ASTM E74 Load Cell Selection Guide Download the spreadsheet for ASTM E74 load cell selection spreadsheet @ https://mhforce.com/wp-content/uploads/2022/05/ASTM-Load-Cell-Selection-Guide.xlsx Many people get confused with load cell specifications and what they mean. When a company says the load cell is accurate to 0.01 % of full scale, what does that mean? If calibrated using the ASTM E74 […]
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Load Cell Loading: Thread Engagement Errors

Morehouse has covered this topic in previous videos and blogs. However, it is important enough to write another blog about thread engagement. Why is it important? In a typical design using female threads, the modeling is done with “assumptions” on the thread engagement. A standard rule is to assume the engagement will be at least […]
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How to Comply with ILAC P14 when Reporting Expanded Uncertainty

How to Comply with ILAC P14 when Reporting Expanded Uncertainty ILAC P14 is a mandatory policy document for calibration laboratories accredited to the ISO/IEC 17025 standard. How can a laboratory ensure that expanded uncertainty is reported in compliance with ILAC Policy Measurement Uncertainty in Calibration, ILAC P14? In ILAC P14, section 5 relates to calibration […]
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Understanding the Calibration Coefficients for Load Cells and Other Force-Measuring Devices

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What Coefficients Do ASTM E74, ISO 376, and other standards may use calibration coefficients to characterize the performance characteristics of continuous reading force-measuring equipment better. These standards may use higher-order fits such as a second or third-order fit (ISO 376) or ASTM E74 allows higher-order fits up to as high as a 5th order. Both […]
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ASTM E74 and Accuracy Statements: Why an Accuracy Statement does not Belong on Every Calibration Certificate

The current ASTM E74-18 standard is the title Standard Practice for Calibration and Verification for Force-Measuring Instruments. Here at Morehouse, we support the best practices that are outlined in the ASTM E74 standard as the representation of the expected performance of a load cell or other force-measuring instrument. What may be a bit of an […]
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ASTM E74-18 Changes

It’s been five years since ASTM E74 was last updated.  The last version of the standard was ASTM 13a, and I believe we may have an ASTM E74-18a.  However, the new standard is released and this blog is going to detail some of the major changes between ASTM E74-13a and ASTM E74-18. A list of […]
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Understanding ISO 376

Our last blog focused on the difference between ISO 376 and ASTM E74. That blog was a comparison between the major differences when comparing both standards and can be found here.  What we hope to do with this blog is go into a bit more detail and explain the ISO 376:2011 Metallic materials — Calibration […]
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ASTM E74 is not the same as ISO 376

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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. Prior to early 2000, ISO-376 was a DIN standard that later became EN-10002-3 […]
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 Morehouse Instrument Company, Inc.
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