Category: ASTM E74

Easy Guide on How to Calibrate Cable Tensiometers

How to Calibrate Cable Tensiometers. Does the Type of Cable GAC versus SSAC Make a Difference? What is a Cable Tensiometer? Cable tensiometers are devices used to measure the tension or force in cables, wires, and ropes. They are commonly employed in engineering, construction, and industrial applications to ensure the proper tension of cables to […]

Lower Limit Factor: Improve Calibration Accuracy for Load Cells and Other Force Measurement Equipment

Lower Limit Factor: Improve Calibration Accuracy for Load Cells and Other Force Measurement Equipment LLF, or Lower Limit Factor, is a statistical estimate of the error in forces computed from the calibration equation of a force-measuring instrument when the instrument is calibrated following ASTM E74 standard practice for calibration and verification for force-measuring instruments. The […]

Treatment of Zero in Determining Deflections – ASTM Method B Interpolated Zero Reduction Methods

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 […]

Load Cell Simulator Calibration Requirements to Calibrate my Digital Indicator: Is it Worth it? (ISO 376 and ASTM E74)

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 […]

Easy to Use ASTM E74 Load Cell Selection Guide

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 […]

Understanding the Calibration Coefficients for Load Cells and Other Force-Measuring Devices

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 […]

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 […]

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 […]

ASTM E74 is Not the Same as ISO 376

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, […]

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 […]

Top 3 ASTM E74 Load Cell Calibrations Mistakes

Top 3 ASTM E74 Load Cell Calibrations Mistakes We are writing this post to clear some common ASTM E74 misconceptions and discuss ASTM E74 Load Cell Calibrations Mistakes.   We have written two early blogs on the ASTM E74 standard ASTM E74 Simplified, Calculating CMC using ASTM E74 standard, and have a slide share presentation detailing the ASTM […]

ASTM E74 Calibration Procedure Simplified

ASTM E74 Calibration Procedure Simplified - Intro Steps Recommended for Performing Calibration in Accordance with ASTM E74 Stabilization Allow UUT to come to room temperature Warm-up Instrumentation Preparation Select 10-11 Test points IF UUT IS TO BE USED IN BOTH INCREASING AND DECREASING FORCES,  THE DEVICE MUST BE CALIBRATED IN BOTH MODES.  THE SELECTION OF […]

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