The 3 Important Changes to ISO 9001 Compliance and What This Means for Force and Torque Instrumentation The 3 Key Changes to ISO 9001 Compliance and What this Means for Force and Torque Instrumentation are discussed in detail in this article. What you need to know about documented procedures, preventative actions, and top management. Change […]
Avoid ASTM E74 Load Cell Calibration Mistakes We are writing this post to clarify some common ASTM E74 misconceptions and discuss ASTM E74 Load Cell Calibration Mistakes. We have written two early blogs on the ASTM E74 standard: ASTM E74 Simplified and Calculating CMC using the ASTM E74 standard. We also have a slide share presentation detailing the […]
Force Applications for Mass Reference Standards Our good friend, Mark Ruefenacht of Heusser Neweigh, and a Mass Metrology Instructor at NIST pointed out that most mass calibration laboratories will issue certificates of calibration only listing conventional mass (unless True Mass is requested). Force Applications for Mass may create some confusion for those trying to convert […]
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 […]
How to Make Load Cells Perform Better - 3 Benefits of Installing a Threaded Adapter on Load Cells In previous posts, we have been focusing on measurement errors. Good measurement practices such as keeping your force measurement system in control are equally important. We often forget about those practices we put in place to make sure […]
Calibration and Measurement Capability (CMC) Force Workbook- ASTM E74 Uncertainty Morehouse has developed a force workbook in Excel to help those trying to figure out measurement uncertainty and how to calculate their Calibration and Measurement Capability (CMC). Updated 10/30/2021! The new update contains coefficients for interpolating uncertainty. Most of this workbook is set up for […]
Morehouse 7-Step Process For Troubleshooting A Load Cell Visual Inspection Lets Us Know Which Cell Is Damaged Troubleshooting A Load Cell Simplified. Have you spent countless hours trying to figure out what is not working? Is it the load cell, is it the meter, the cable, or something else? We have wasted countless hours trying […]
What is Accuracy? Can We Trust the Manufacturer's Specifications? What is Accuracy? Accuracy is influenced by both precision and bias in the measurement process. To understand accuracy, one must understand bias, systematic measurement error, random measurement error, measurement error, and precision. Manufacturers' accuracy specifications may be misleading as they may not tell you how the […]
Why Force Measurements Matter - Force Transducer Testing and NASCAR Why Force Measurements Matter - Photo Courtesy of Associated Press Austin Dillon went cascading into the catch fence at Daytona Speedway on the early morning of July 6th, 2015. Was he thinking of all the testing his NASCAR Sprint Cup car goes through? Absolutely not! […]
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 […]
