Guidance on Uncertainty Budgets for Force Measuring Devices Part 4. Calculating Uncertainty for Force Proving Instruments Calibrated to ISO 376

March 14, 2018 12:00:00

Morehouse CMC sheet will allow CMC calculation in accordance with ISO 376. The purpose of this blog is to provide guidance for determining the proper contributors of parameters for force measuring devices that should be taken into consideration when developing uncertainty calculations that support Calibration and Measurement Capability (CMC) uncertainty claim made on a scope of accreditation.

Understanding ISO 376

March 09, 2018 12:00:00

ISO 376:2011 Metallic materials — Calibration of force-proving instruments used for the verification of uniaxial testing machines standard explained. The ISO 376 standard is used worldwide, and it is a requirement for anyone calibrating in accordance with ISO 7500. If ISO 7500 is the requirement, then calibration needs to be performed in accordance with ISO 376 on the force-proving instruments used to certify the tensile machine. It is also the generally accepted force standard for most of the countries outside of North America for calibration of force-proving instruments such as load cells, proving rings, dynamometers, and other instruments used to calibrate similar types of instruments.

ASTM E74 IS NOT THE SAME AS ISO 376

February 26, 2018 12:00:00

The article discusses the differences between ISO 376 and ASTM E74 in hopes to prevent intermixing of the standard as we had heard of companies using an ASTM E74 calibration to certify a tensile machine to ISO 7500.

Morehouse has New ISO 376 Calibration Certificates

February 20, 2018 12:00:00

Morehouse has been performing ISO 376 calibrations for over the last fifteen years. In this time frame, we have changed our ISO 376 certificate format three times. The latest change offers additional information such as calibration graph per run and is laid out in a way that is much more cohesive making it easier to read and understand

Calibrating Multi-Axis Load cells in a Morehouse Calibrating Machine

February 06, 2018 12:00:00

This blog details the calibration multi-axis load cells in a Morehouse Universal Calibrating Machine. Similar adapters and the same method could be used to calibrate multi-axis load cells in a Morehouse Deadweight frame. Please contact us for more information.

Tensile Calibration Adapter Breakthrough! Morehouse Force Calibration Adapters for Calibration of Lifting Devices such as Crane Scales, Tension Links, and Dynamometers.

January 16, 2018 12:00:00

Finally, a way to reduce excessive clutter and simplify tensile calibrations for Load Cells, Crane Scales, Tension Links, and Dynamometers.

Choosing the Right Indicator for your Load Cell System

December 19, 2017 12:00:00

If you get everything else correct and choose the wrong indicator, the overall system performance can suffer. This blog is going to better detail three specific indicator types. These are: 1- An A/D indicator that requires a computer to read the display 2- A battery powered portable indicator with minimal span points 3- A versatile indicator that can be used with several span points or accurately display mV/V through calibration.

Guidance on Uncertainty Budgets for Force Measuring Devices Part 3a. Calculating Uncertainty for Force Measuring Devices for Measurement or Verification of Force Using Non-Linearity

November 21, 2017 12:00:00

What is acceptable for a force calibration uncertainty budget when the device is not calibrated to a known standard and just to a couple manufacturer's specifications. This document aims at helping laboratories calculate force measurement uncertainties for Force Measuring Devices for Measurement or Verification of Force.

Guidance on Uncertainty Budgets for Force Measuring Devices Part 2. Calculating Uncertainty in Accordance with the ASTM E74 Standard

October 27, 2017 12:00:00

The ASTM E74 uncertainty appendix does not align with ILAC Policy for Uncertainty in Calibration ILAC P-14 which can be a problem for any accredited calibration laboratory. The purpose of this post is to combine the ASTM E74 calibration method, ILAC P-14, and JCGM 100:2008 together to help labs calculate measurement uncertainty per point throughout the loading range with the appropriate coverage factor k to meet their accreditation requirements.

Guidance on Uncertainty Budgets for Force Measuring Devices Part 1. Why Do We Need a Guidance Document?

October 13, 2017 12:00:00

This is part 1 of 4 total blog posts. This post deals with why Force Calibration needs a guidance document. The hope is to expand each of these posts and let them stand on there own to a specific force application.