This standard is issued under the fixed designation E74; the number immediately 3 For referenced ASTM standards, visit the ASTM website, , or. 17 Oct Did you know several major companies fail to follow the guidelines set fourth in ASTM E74? ASTM E74 is the standard for calibration of load. All the Controls products ASTM E74 standard. Enter now!.

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CMC Workbook for ASTM E74 Uncertainty

Criteria for Lower Load Limit. Link to Active This link will zstm route to the current Active version of the standard. Apply the second series of forces Run 2. Replace mechanical indicating applications in smallest AGD size specification class. Place the UUT in the test frame. There are d74 steps to the stabilization process: Method Ast, Deflection readings are calculated as the difference between the deflection at the applied force and the initial deflection at zero force.

Method B Deflection readings should be calculated as the difference between readings at the applied force and the average or interpolated zero force readings before and after the applied force readings. Morehouse designs and manufactures products in line with customer requirements, lean, Six Sigma, and best practices guidelines. Posted by Henry Zumbrun at 9: Procedures are included for the following types of instruments: My organization, Morehouse Instrument Co.


Contact Quality Digest for reprint information. They are the ultimate solution in force measurement versatility. Recalibration is required for a permanent zero shift exceeding 1. Assessing the Health of a Measurement System. Verification by deadweight loading is also an acceptable method of verifying the force indication of a testing machine.

Discuss 0 Hide Comments Comment. The procedures are useful to users of testing machines, manufacturers and providers of force-measuring instruments, calibration laboratories that provide the calibration of the instruments and the documents of traceability, service organizations that use the force-measuring instruments to verify testing machines, and testing laboratories performing general structural test measurements.

Exercise the UUT two to four times. Morehouse helps asttm lower asm force measurement uncertainties and torque, resultin in more accurate measurements, which lowers costs, aetm risk, and increases quality.

ASTM E74 Calibration Procedure Simplified

And we happen to make great force equipment and provide unparalleled calibration services. Morehouse makes our products simple to use and user friendly. Everything we do, we believe in changing how people think about force and torque calibration.

This is size-dependent and can take 24 to 48 hours. Create better products and designs while saving money and reducing scrap.

May the Force Be With You | Quality Digest

Morehouse believes in thinking differently about force and torque calibration and equipment. Wanna do business with a company who focuses on what matters most?


Any instrument that is either modified or repaired should be recalibrated. With slight modification, atm uncertainty sheet could be used for instruments calibrated in accordance with another test method or standard.

Practices E4 has been written to provide a practice for the force verification of these machines. Historical Version s – view previous versions of standard. Download the worksheet here. The major calibration steps include stabilization, preparation, the calibration procedure itself, and data analysis.

Using an ascending calibration curve to calibrate a device in decreasing mode can result in errors of 0. Parts can be checked for defects without being transferred to a measurement lab.

Apply the third series of forces Run 3. This low force must be greater than the resolution of the device multiplied by for Class Atm or for Class AA devices. Copyright on content held by Quality Digest or by individual authors.

There are three criteria for the lower load limit: