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.
Features: New Calibration Certificates and QR Codes; Top 3 ASTM E74 Calibration Mistakes; Upcoming Events – Announcements and Dates
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
Features: 2-Bar Versus 3-Bar Universal Calibrating Machines; ASTM E74 Calibration – Simplified step-by-step instructions; Upcoming Events – Announcements and Dates
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
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
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
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
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
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.
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.
Article written by Henry Zumbrun for Cal lab Magazine.
What you need to know about dual range calibrations. Article from Test Magazine May 2016 issue.
Article in test magazine from Oct-Nov 2015 issue.
There is not a difference in repeatability and reproducibility between a 2 bar and a 3 bar Universal Calibrating Machine
Written and published in Cal Lab magazine April 2016
Article published in Quality Digest written by Henry Zumbrun (Morehouse Instrument Company).
Recommended steps for calibrating instruments in accordance with ASTM E74-13a. Published in Quality Digest Online in July 2016
This paper will describe our calibration process, including the calculations of our Calibration and Measurement Capability(CMC), as it appears on our scope of accreditation.
This paper describes NPL’s 2 kN·m torque machine — Now at Morehouse Instrument Company — a lever deadweight machine with a vertical torque axis and an uncertainty of ±0.002 %. Despite the greater difficulty in applying torques to a vertically mounted transducer, this design was selected as it enables a symmetric “pure” torque to be applied. In addition, this design provides adaptability, enabling comparisons with the application of asymmetric torque and “on-thefly” torque calibrations to be studied.
How to make your load cells perform better - The advantages of Installing an integral threaded adapter
There are three distinct advantages to installing a threaded adapter on a shear web load cell. There are also three disadvantages of not installing a threaded adapter that will sacrifice performance, repeatability, and reproducibility of the load cell.
Morehouse Load Cell Amplifier for Controllers (LAC) Can Improve System Performance by a Factor of 10
You’ve got the most expensive equipment and very smart technicians working for you. What if your only problem is that the load cell amplifier you are using, is hindering your total system performance? Morehouse Load Cell Amplifier for Controllers (LAC) Can Improve System Performance by a Factor of 10. This is an article demonstrating actual testing done using a LAC amplifier.
Making a statement of compliance: The three main reasons calibration laboratories fail to get things right.
Metrological Traceability, Measurement Uncertainty, and Measurement Risk This blog discusses a clear metrological traceability chain, calculating measurement uncertainty correctly and evaluating measurement risk using the formulas.
With a weight of fewer than 36 lbs, the Morehouse Portable Calibrator allows on-site calibration of load cells, force gauges, hand held force gauge, button load cells, and other force measuring instrumentation.
What happens when torque is not applied properly. Do you even know if your wrenches are capable of applying the correct torque? This blog explains over and under torquing as well as something called back torquing. Back torquing is when you have no idea that a particular wrench is applying a torque in the opposite direction, resulting in inaccurate torque values being applied to the fastener.
Load Cell Creep is the change in load cell signal occurring with time while under load. This post discusses the three common load cell creep definitions with some humor. Morehouse sell good load cells that have very low creep.
The right requirements, equipment, and requirements are essential to lowering your measurement risk. This blog explains all three requirements in great detail.
Measurement Risk - What you need to know about your calibration provider. You may not be getting what you really need!
Have you ever heard the term measurement risk? It is a real term that may make the difference from a $ 500 loss to hundreds of thousands, or hundreds of millions in losses. When things work, no one really thinks about risk, when they do not, everyone is to blame. This article examines what measurement risk is and why you should care about it.
There’s a question I’ve heard asked more often than it should be: "How should I treat measurement uncertainty contributed by the resolution of a device?"