Understanding Compression Load Cell Equations Compression load cells are critical for measuring pushing forces in various applications. Here at Morehouse, we calibrate many tension load cells from various capacities. One of the more essential aspects of these calibrations is ensuring the appropriate adapters are used. Our e-book and other documents speak to the importance of […]
Understanding Tension Load Cell Equations Tension load cells are critical for measuring pulling forces in various applications. Here at Morehouse, we calibrate many tension load cells from various capacities. One of the more essential aspects of these calibrations is ensuring the appropriate adapters are used. Our e-book and other documents speak to the importance of […]
Specific Force Measuring Instruments Introduction At Morehouse, we have covered various sections of the ASTM E74 standard over numerous articles, papers, and posts. We have not covered specific force-measuring instruments for all of those various pieces. Yet, we frequently perform many calibrations and have sold equipment designed specifically for this criteria. Even though many customers […]
ASTM E74 Change From Previous to Meet a Two-year Calibration Interval ASTM E74 Change From Previous to meet a two-year calibration interval is found in the ASTM E74 standard in section 11.2.1. The standard specifically states, “Force-measuring instruments shall demonstrate changes in the calibration values over the range of use during the recalibration interval of […]
Treatment of Zero in Determining Deflections – ASTM Method B Interpolated Zero Reduction Methods In calibration, many disciplines take multiple calibration points between the initial zero and the ending zero. What is the standard method for reducing the zero readings from the raw data recorded? When we started asking some contacts at National Metrology Institutes […]
The Pros and Cons of Load Cell Simulator Calibration: Is Interchangeability Worth It? We have been asked more frequently about the benefits of calibrating everything as a system versus calibrating the load cells and indicators separately and intermixing them using a calibrated load cell simulator. Being able to intermix any load cell and meter combination […]
ASTM E74 Load Cell Selection Guide Download the spreadsheet for ASTM E74 load cell selection spreadsheet here. Many people get confused with load cell specifications and what they mean. When a company says the load cell is accurate to 0.01 % of full scale, what does that mean? If calibrated using the ASTM E74 standard, […]
Guide for Understanding Uncertainties on a Morehouse ASTM E74 Calibration Certificate Reporting the Expanded Uncertainty on an ASTM E74 Calibration Certificate of the measurement is a requirement of ISO/IEC 17025 and likely always will be. However, if you look at several different certificates of calibration, their Expanded Uncertainty reported, contributors and reporting methods will vary […]
What Calibration Coefficients Do ASTM E74, ISO 376, and other standards may use calibration coefficients to characterize the performance characteristics of continuous reading force-measuring equipment better. These standards may use higher-order fits such as a second or third-order fit (ISO 376) or ASTM E74 allows higher-order fits up to as high as a 5th-order. Both […]
ASTM E74 and Accuracy Statements: Why an Accuracy Statement Does Not Belong on Every Calibration Certificate - Intro The current ASTM E74-18 standard is the title Standard Practice for Calibration and Verification for Force-Measuring Instruments. Here at Morehouse, we support the best practices that are outlined in the ASTM E74 standard as the representation […]
New ASTM E74-18 Changes - Intro It’s been five years since ASTM E74 was last updated. The last version of the standard was ASTM 13a, and I believe we may have an ASTM E74-18a. However, the new standard has been released and this blog is going to detail some of the major changes between […]
ASTM E74 is Not the Same as ISO 376 Morehouse has performed ASTM E74 and ISO 376 calibrations for over 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. Before early 2000, ISO-376 was a DIN […]
