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My ASTM E74 Change From Previous is Too High: What Could Have Caused This?

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ASTM E74 Change From Previous ASTM E74 Change From Previous to meet a two-year calibration interval is found in the ASTM E74 standard in section 11.2.1. The standard specifically states, “Force-measuring instruments shall demonstrate changes in the calibration values over the range of use during the recalibration interval of less than 0.032 % of reading […]
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Treatment of Zero in Determining Deflections – ASTM Method B Interpolated Zero Reduction Methods

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Treatment of Zero in Determining Deflections – ASTM Method B Interpolated Zero Reduction Methods In calibration, many disciplines take multiple calibration points between the initial zero and the ending zero. What is the standard method for reducing the zero readings from the raw data recorded? When we started asking some contacts at National Metrology Institutes […]
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Load Cell Simulator Calibration Requirements to Calibrate my Digital Indicator: Is it Worth it? (ISO 376 and ASTM E74)

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Load Cell Simulator Calibration Requirements to Calibrate my Digital Indicator: Is it Worth it? We have been asked more frequently lately about the benefits of calibrating everything as a system versus calibrating the load cells and indicators separately and intermixing them using a calibrated load cell simulator. Being able to intermix any load cell 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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Understanding the Calibration Coefficients for Load Cells and Other Force-Measuring Devices

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What Calibration 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

ASTM E74 and Accuracy Statements: Why an Accuracy Statement Does Not Belong on Every Calibration Certificate - Intro   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 […]
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New ASTM E74-18 Changes

New ASTM E74-18 Changes - Intro   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 has been released and this blog is going to detail some of the major changes between […]
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ASTM E74 is Not the Same as ISO 376

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ASTM E74 is Not the Same as ISO 376 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, […]
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Recommendations for Specifying ASTM E74 Calibration Services

Recommendations for Specifying ASTM E74 Calibration Services Recommendations for Specifying ASTM E74 Calibration Services.  This document is intended to help properly specify what you may need for ISO/IEC 17025 accredited ASTM E74 calibrations to ensure you are getting exactly what you need: Verification of the Calibration Supplier Can meet the Requirement. Reviewing many accredited laboratory […]
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