CALIBRATION / COMPARE PROTOTYPES
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FSR Calibration and Prototype Testing Conditions
Test under conditions close to the final assembly, with results that can be reviewed.
Start FSR prototype inspection with the drawing revision, appearance, dimensions and connections. Keep mounting, readout and loading conditions consistent, then record loading, holding, unloading and recovery. Assess repeatability, hysteresis and constant-load drift separately. Agree acceptance criteria for the film and complete product separately as well.
Editable worksheets · v1.0 · 2026-11-03
Download blank test records
Keep the sample revision, mounting conditions and readings together. Fill in known conditions and leave unresolved items open for review. Keep the raw readings; these blank worksheets are not a test report.
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Sample and revision
- Project / sample ID
- Drawing ID and revision
- Test date and recorder
- Purpose and changes in this round
- Photo / original-file references
Mounting and contact
- Mounting location and method
- Cover and rear support
- Loading-head shape, material and area
- Preload and unit
Readout and acquisition
- Circuit revision and supply
- Readout quantity and unit
- Acquisition equipment and settings
- Sampling interval and unit
- Environmental conditions
Test plan and review
- Load points, units and reference equipment
- Loading / unloading sequence and speed
- Hold and recovery duration
- Repetition count
- Previously agreed acceptance criteria
- Results, anomalies and untested conditions
- Reviewer, date and record revision
Raw readings: one observation per row
Sample ID · Drawing revision · Test run · Sequence · Phase (loading / holding / unloading / recovery) · Time · Time unit · Applied load · Load unit · Raw reading · Reading unit · Anomaly or mounting change
Edit CSV files in a spreadsheet or TXT in a text editor. Add rows for the actual test and keep units in their own columns. Send completed CSV/TXT files by email or WeChat; the online form accepts only the PDF and image formats listed there. Confirm permission to share drawings, photos and records for the discussion.
Discuss the test requirements →Check sample identity and structure against the drawing
- Revision and identity
- Match sample IDs, drawing revisions, quantity and changes for this round; do not mix revisions.
- Appearance and dimensions
- Review the outline, sensing area, tail, contacts and mounting positions against the drawing, with an agreed method and acceptance scope.
- Connection and electronics
- Define the termination, readout circuit, supply and sampling conditions before recording electrical output under agreed loads.
Fix the conditions needed for a valid comparison
When comparing alternatives, record each change so an assembly difference is not mistaken for a sensing-film difference.
- Sample ID, drawing revision and mounting method.
- Loading-head material, contact area, rear support and preload.
- Load units, loading method, hold time and repetition count.
- Readout circuit, supply, sampling method and environment.
How do calibration and prototype inspection differ?
FSR calibration relates known loads to acquired readings with fixed mounting, readout and environmental conditions. Prototype inspection checks whether the structure, electrical output and use behavior meet this round’s agreed requirements. Record their methods and acceptance criteria separately.
A calibration relationship applies to its agreed conditions. Changes to contact area, cover, support, preload or circuit require review. Calibration alone does not establish a stated accuracy or complete-product acceptance.
Record loading, holding, unloading and recovery separately
- Loading
- Apply the agreed load points and loading speed, recording input, output and time.
- Holding
- Keep load and contact conditions fixed and record changes for the agreed duration.
- Unloading
- Reduce the load in the agreed sequence and compare with loading at the same load points.
- Recovery
- Continue recording after unloading to establish recovery and the starting condition for the next test.
Assess three effects separately
- Repeatability
- How consistently readings recur across repeated loads under the same conditions.
- Hysteresis
- The output difference between loading and unloading paths.
- Constant-load drift
- How a reading changes over time while the load remains constant.
Agree which records to retain before prototyping
Write the load points, test sequence, hold and recovery times and acceptance method into the test plan. Agree the record scope and delivery format during review.
- Sample IDs, drawing revisions, inspection items and assembly photographs.
- Contact, support, preload, circuit, sampling and environmental conditions.
- Raw readings, time, abnormal conditions and changes in this round.
- Use consistent definitions for film and complete-product results so issues can be traced.
Agree what counts as meeting the requirement
Evaluate the film and complete product separately, as well as sensing input and software results. Long-term and environmental tests are agreed by project. This page is a method and record checklist, not a test report for a specific sample.
Testing and prototype review questions
Can we assess prototypes without a complete parameter sheet?
Yes. Start with the application, assembly and state to detect. Then agree which loading, electronic and test conditions need to be added.
Can results from different mounting methods be compared directly?
First record and control contact, support and preload. Mounting changes affect load transfer, so separate mechanical effects from differences between samples.
Which inspection records can you provide?
List the inspection items, conditions, raw data and report format you need before prototyping. The scope is confirmed for the project.