Pull Tester Accuracy Check: Indicated vs Reference Load
Load the tester against a reference load cell, type both readings at each point, and get the error and % error per point with PASS/FAIL against the tolerance your procedure sets. Print it for the calibration log.
Check details
The tolerance comes from your procedure or the standard it names; the tool does not set one. Nothing you type is uploaded or saved.
Readings
#
Reference load
Tester reading
Error
% error
Result
Summary
Points checked
–
PASS / FAIL
–
Largest |% error|
–
Overall result
–
Error = tester reading − reference load; % error = error / reference load × 100; PASS when |% error| ≤ tolerance. Checked with the free tool at calyx-ai.net/qa/tester-accuracy-check/ (Quality Tester Solutions LLC). Signature: ____________________
How it works
For each point: error = tester reading − reference load, and % error = error / reference load × 100. A positive error means the tester reads high. A point is PASS when the absolute % error is no more than the tolerance you enter; the overall result is PASS only when every point with both readings passes. A row without both readings gets no result. Check: reference 10.00 kN, tester 10.15 kN gives +0.15 kN and +1.50 %, which is FAIL at ±1 % and PASS at ±2 %.
This is an in-house check between calibrations, not a calibration. The tool does not choose the check loads, the number of points or the tolerance, and it takes the reference reading as correct. Record the formal calibration and its due date on the calibration due-date checker. On a hydraulic tester, the gauge pressure to load calculator turns gauge readings into load, and the ram effective area calculator gives the area it needs. Mixed units? Use the force unit converter.
Keep the calibration log in the full workbook
The Fastener & Anchor Pull-Test Report Templates pack has a 40-row proof-test report with automatic PASS/FAIL, ultimate-load statistics, a calibration log, a unit converter, a printable procedure checklist and a standards index. $49 one-time, from Quality Tester Solutions LLC, the company behind Force-Test pull testers.