Category: Force Calibration Standards

Understanding ISO 376

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 […]

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, […]

Morehouse ISO 376 Calibration Certificates

Morehouse ISO 376 Calibration Certificates Morehouse has been performing ISO 376 calibrations for over the last fifteen years. In this time frame, we have changed our ISO 376 calibration certificate format three times. The latest change offers additional information such as a calibration graph per run and is laid out in a way that is […]

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 […]

ASTM E74 Primary, Secondary and Working Standards Explained

Primary Force Standards (As Defined per ASTM E74) Morehouse Deadweight Machine ASTM E74 Standard Practice of Calibration of Force-Measuring Instruments for Verifying the Force Indication of Testing Machines (section 3.1.2) defines a primary force standard as a deadweight force applied directly without intervening mechanisms such as levers, hydraulic multipliers, or the like, whose mass has […]

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