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Morehouse Newsletter Issue 9 (2017)

March 23, 2017

This may be the last version of our Newsletter in this format. This newsletter discusses our Portable Calibrator, LAC and has an article on measurement risk.

Morehouse Newsletter Issue 8 (Q4 2016)

October 01, 2016

Features: New Calibration Certificates and QR Codes; Top 3 ASTM E74 Calibration Mistakes; Upcoming Events – Announcements and Dates

Morehouse Newsletter Issue 7 (Q3 2016)

July 01, 2016

Features: Designing Force Adapters for Calibration; Quick Change Tension Adapters for Calibrating Machines; Upcoming Events – Announcements and Dates; Meet Our Staff - James Wagner, Chief Engineer

Morehouse Newsletter Issue 6 (Q2 2016)

April 01, 2016

Features: 2-Bar Versus 3-Bar Universal Calibrating Machines; ASTM E74 Calibration – Simplified step-by-step instructions; Upcoming Events – Announcements and Dates

Morehouse Newsletter Issue 5 (Q1 2016)

January 01, 2016

Features: Tips from the Cal Lab - SPC – Statistical Process Control in the lab; Good Measurement Practice – Keep your system in control with a 5 in 1 solution; Calibration Intervals – by Phil Smith; Upcoming Events – Announcements and Dates

Morehouse Newsletter Issue 4 (Q4 2015)

October 01, 2015

Features: Load Cell Troubleshooting – Morehouse 7 Step Load Cell Troubleshooting Guide; Potential Measurement Error – Tension Links; Meet the Morehouse Staff – Barry Cook (Lab); Training Workshop – Announcements and Dates

Morehouse Newsletter Issue 3 (Q3 2015)

July 01, 2015

Features: Lean Tips – Setup Reduction; Potential Measurement Error – Unbolting Load Cells May Not Product Repeatable Results; Meet the Morehouse Staff – William Lane (Design Engineer); “Specifying Accredited Services” – Column by Phil Smith

Morehouse Newsletter Issue 2 (Q2 2015)

April 01, 2015

Features: Lean Tips - 5S or 6S; Potential Measurement Error - 4 wire versus 6 wire; Meet the Morehouse Staff - Brian Ruppert (Machine Shop Supervisor); "Single Measurement Bliss" - Column by Dilip Shah discussing the problems with a single measurement

Morehouse Newsletter Issue 1 (Q1 2015)

January 01, 2015

Features: Tips from the calibration lab - Point of Use to Save Time; Potential Measurement Error - Loading Through Bottom Threads in Compression; History of Morehouse - A detailed history from the 1920's through 2015; Oops! I severed my Cable Again - An article about switching cables

Recommended Compression and Tension Adapters for Force Calibration

May 14, 2018

Want to learn more about force measurement errors and the impact the wrong adapters can have? The wrong adapters can produce measurement errors up to 20 times that of when the instrument was calibrated. This technical paper provides greater detail on adapters for compression and tension calibration of load cells, mini load cells, washer load cells, s-beam, tension links, multi-axis, hand-held for gauges and other force measuring instrumentation. It goes into detail about to improve your force calibrations with the proper adapters.

An Introduction to the Differences Between the Two Most Recognized Force Standards

April 26, 2018

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. Until recently, we assumed that the rest of the world and force community knew that the standards were completely different and that either standard could not be substituted for another. This paper explains those differences in more detail.

What is measurement risk?

April 12, 2017

Measurement decision risk as probability that an incorrect decision will result from a measurement. Are you telling your customers instrument passes without considering measurement uncertainty? If taken to court, are your measurement defensible? This paper examines the proper way to make statements of compliance.

Uncertainty propagation for force calibration systems, or how to put together a force CMC.

February 07, 2017

Having troubles understanding measurement uncertainty and how to put together a budget? This paper examines all of the components required to put together a full calibration and measurement capability (CMC) reviewed by Accreditation Bodies for your scope. This is a guide to calculating force measurement uncertainties and was published in Cal Lab magazine.

Analyzing the effects of ignoring the trailing zero in calibrations

February 07, 2017

Article written by Henry Zumbrun for Cal lab Magazine.

Molecule Excitement Decline

February 06, 2017

What you need to know about dual range calibrations. Article from Test Magazine May 2016 issue.

Potential Measurement Errors in Force Calibrations

February 06, 2017

Article in test magazine from Oct-Nov 2015 issue.

Measuring Torque

February 06, 2017

Article published in Quality Digest written by Henry Zumbrun (Morehouse Instrument Company).

May the Force Be With You

February 06, 2017

Recommended steps for calibrating instruments in accordance with ASTM E74-13a. Published in Quality Digest Online in July 2016

What Makes a Force Calibration Machine Fit for Use?

December 13, 2018 12:00:00

This blog discusses the most important attributes of great force calibration machines such as being plumb, level, rigid, and square and error sources associated with not having a machine that has these attributes.

Morehouse Versatile Cable Tensiometer and Force-Measuring Instrument Calibrator

December 04, 2018 12:00:00

Morehouse 2,000 lbf Tensiomenter calibrator to calibrate Cable Tensiometers Safely, Load Cells, Crane Scales, Hand-Held Force Gauges, Dynamometers, and More.

How to Calculate the Uncertainty of a Deadweight Primary Standard Machine

September 21, 2018 12:00:00

Any organization that is accredited must account for the uncertainty of their standards. The following are guidelines to assist in calculating the measurement uncertainty for dead weight primary standards.

Automatic Deadweight Load Cell Calibration Instrument for Improved Force Calibration Results

August 23, 2018 12:00:00

This post describes various force standards that are often used to calibrate force sensors and other devices. It discussed in detail the advantages of deadweight machines for the best calibration results. It then goes into detail about what it takes to calibrate a load cell properly.

Morehouse Training, Sessions, and Presentations at NCSLI 2018 in Portland August 26 - 30

August 16, 2018 12:00:00

Morehouse Training at NCSLI 2018 in Portland. We will be teaching two tutorials, one on force and one on torque as well as presenting at Session 5A and the Airline Committee meeting.

Load Cell Stability – How It Can Kill Your Uncertainty Budget

July 13, 2018 12:00:00

Load cell stability can potentially consume your uncertainty budget, cause the force measuring device to be out of tolerance, cause all measurements between the last calibration and the current calibration to be recalled, raise the accuracy specification of the system. This post covers what instability is and ways to potentially reduce instability.

ISO 17025 When Calculating Torque Measurement Error Cosine Error should be considered

June 21, 2018 12:00:00

Some ISO 17025 accredited labs performing torque calibrations may not entirely be considering the effect on the uncertainty from Torque Measurement Error from Applied Force Direction (cosine error)

Using Mass Weights to Calibrate Force Devices Can Result in a Large Measurement Error

May 29, 2018 12:00:00

This blog describes the expected errors from using mass weights to calibrate force measuring instruments such as load cells, crane scales, dynamometers, hand-held force gauges, and tension links. We examine the error in using LBS instead of LBF and vice versa. Gravity is not constant over the surface of the earth. The most extreme difference is 0.53 % and using mass weights for calibration and then using the instrument somewhere else can result in significant measurement errors.

Without the Right Adapters a Force Calibration Technician is Nothing Short of Being Called a Miracle Worker

May 07, 2018 12:00:00

Think about that for a minute. Would you want a surgeon to operate on you with kitchen utensils such as a serrated knife? Then why do some people (management cough) expect or ask the force calibration technician to calibrate load cells, truck & aircraft scales, tension links, dynamometers, and other force measuring devices with whatever they have in their laboratory.

ASTM E74-18 Changes

April 27, 2018 12:00:00

It’s been five years since ASTM E74 was last updated. The new standard ASTM E74-18 is released and this blog is going to detail some of the major changes between ASTM E74-13a and ASTM E74-18.