Do Load Cells Wear Out? What Ten Years of ASTM E74 Data Say About Load Cell Aging In short: no, not the good ones. Across 16 703 deadweight ASTM E74 results on shear web cells, the median lower limit factor is 0.0055 % of capacity in the first year we see a cell and 0.0048 % eight […]
The Transfer-Standard Penalty: The Same Instrument, Two Calibration Certificates, and What Changed Between Them (Deadweight Calibration vs Transfer Standard) In short: we found 17 customer instruments with a stated accuracy of 0.1 % of full scale or better that Morehouse has calibrated both ways since 2018, on a deadweight machine in some years and on a […]
Load Cell Temperature Compensation: Why a Load Cell Has to Earn Its Temperature Rating Check your tire pressure in a cold garage, then drive two hours on a hot highway and check it again. The number went up. Nothing leaked in and nothing leaked out. The tire is the same tire; only the temperature changed. […]
Load Cell Testing: How a Prototype Earns Its ASTM E74 Certificate How Morehouse approaches load cell testing on a new prototype, from the temperature chamber to the deadweight machine to an ASTM E74 calibration, and why one aluminum prototype has us excited. “Remember, kids, the only difference between screwing around and science is writing it […]
A Load Cell Is a Spring You Learn to Trust: A Guide to Strain Gauge Load Cells A load cell is a precision spring: a strain gauge load cell converts the elastic element's deformation under force into an electrical signal through bonded strain gauges and a Wheatstone bridge. Non-linearity, hysteresis, and creep all describe how […]
Custom High Temperature Load Cells for Downhole Applications Above 400 °F (204 °C) Donut-style (through-hole) high temperature load cells and compression fixtures on the bench at Morehouse. Put a cast-iron skillet with a plastic handle into a 450 °F (232 °C) oven. The pan will be fine. The handle will not. A strain gauge load […]
Bad Load Cell Setup: Specific Load Cell Examples, Common Errors, and What to Watch for by Load Cell Type A Bad Load Cell Setup almost never starts with the readout. It starts with the mechanical load path, meaning alignment, adapters, thread engagement, and contact surfaces. When those are not controlled, you introduce off-axis forces such […]
How to Choose Between a Proving Ring and a Load Cell for Force Calibration If you have spent any time in a force calibration lab, you have probably faced this question at least once: Should I use a proving ring or a load cell as my reference standard? It is a topic that frequently comes up when we do […]
How to Get the Most Out of Your Load Cell with an ASTM E74 Calibration: A Simplified Guide for Novice and Maybe Experienced Users (Yikes). First Things First: What Is a Load Cell? Think of a load cell like a really precise digital scale built into a machine. When you push or pull on […]
Dual-Range vs. Dedicated Load Cell Scope. This article summarizes what our calibration certificates show over many years when the same load cell is calibrated in a low range (LO) and a high range (HI). All findings below are derived from the calibration data provided (ASTM LLF history, standard deviation, stability between calibration, and deviations […]
Price, Quality, and Lead Time: Pick Two. At Morehouse We Have Fast ISO 17025 Calibration Services for Load Cells. There’s a saying that goes something like pick and two because there’s no one that can do all three. That makes a lot of sense when you think about it as cheap, fast, and quality is […]
How to Calibrate Cable Tensiometers: Addressing Error Sources and Promoting Standardization Figure 1: Henry Zumbrun uses a Morehouse Cable Tensiometer Machine (PCM-2MD-T1). How to Calibrate Cable Tensiometers: Introduction Cable tensiometers are precision instruments used to measure cable tension in aerospace, industrial, and structural applications. Accurate calibration of these devices is essential to ensure reliable force […]
