Document Overview
Key Findings The ETENWOLF T500 tire pressure gauge successfully passed high/low temperature environmental storage testing, with display, button function, and pressure accuracy all performing within specification after thermal cycling. Test Type: Reliability Test — High/Low Temperature Environmental Storage Standard: Internal Standard Report No.: 20240903001 Test…
- Document type
- Test Report
- Prepared by
- Kevin Marshall
- Published
- Last reviewed
- Topics
- Environmental Testing
Key Findings
The ETENWOLF T500 tire pressure gauge successfully passed high/low temperature environmental storage testing, with display, button function, and pressure accuracy all performing within specification after thermal cycling.
- Test Type: Reliability Test — High/Low Temperature Environmental Storage
- Standard: Internal Standard
- Report No.: 20240903001
- Test Date: 2024-09-03
- Sample: 1 PCS (Unit #1)
- High Temp Condition: 65 °C, 80% RH for 2 hours
- Low Temp Condition: −20 °C for 2 hours
- Verdict: PASS — No appearance anomalies; display, buttons, and accuracy all normal post-test
Test Overview
| Field | Details |
|---|---|
| Product No. / Name | Tire Pressure Gauge (胎压计) |
| Model / Type Specification | ETENWOLF T500 |
| Report No. | 20240903001 |
| Test Date | 2024-09-03 |
| Sample Quantity / No. | 1 PCS |
| Test Type | Reliability Test (可靠性测试) |
| Test Standard | Internal Standard (内部标准) |
| Test Purpose | Evaluate the sample’s storage tolerance under extreme temperature environments |
| Acceptance Criteria | After testing, the sample’s appearance and function show no anomalies |
| Test Equipment | Constant Temperature and Humidity Test Chamber; Functional Test Fixture |
| Ambient Conditions | Room Temperature 23 °C, Relative Humidity 60% |
Test Equipment & Setup
| Item | Details |
|---|---|
| Primary Equipment | Constant Temperature and Humidity Test Chamber (恒温恒湿试验箱) |
| Secondary Equipment | Functional Test Fixture (功能测试架) |
| High Temperature Setting | 65 °C |
| High Temperature Humidity Setting | 80% RH |
| High Temperature Duration | 2 hours |
| Low Temperature Setting | −20 °C |
| Low Temperature Duration | 2 hours |
| Total Thermal Cycle Duration | 4 hours (4H) |
| Ambient Room Temperature | 23 °C |
| Ambient Room Humidity | 60% RH |
| Accuracy Reference — Low Pressure Target | 40 ± 1 psi |
| Accuracy Reference — High Pressure Target | 90 ± 1 psi |
| Accuracy Reference — Hold Pressure Target | 120 ± 1 psi |
Test Procedure
- Pre-Test Inspection: Record the sample number and verify the unit’s initial appearance, display function, and button response under ambient conditions (23 °C, 60% RH).
- High Temperature Phase: Place the sample inside the constant temperature and humidity test chamber. Set the chamber to 65 °C with 80% relative humidity. Hold for 2 hours continuously.
- Low Temperature Phase: Immediately following the high temperature phase, adjust the chamber to −20 °C (no humidity control required). Hold for 2 hours continuously.
- Total Cycle: The combined high/low temperature cycle totals 4 hours (4H).
- Post-Test Functional Check: Remove the sample and inspect the display screen for normal line display, verify all button functions operate correctly, and conduct accuracy measurements at three reference pressure points.
- Accuracy Measurement: Record gauge readings against the calibrated reference pressures at low (40 ± 1 psi), high (90 ± 1 psi), and hold (120 ± 1 psi) test points.
- Acceptance Criteria: The sample passes if post-test appearance shows no anomalies and all functional and accuracy results are within the specified tolerance (deviation <1 psi from reference).
Test Data & Results
Observation Summary
| Sample No. | Thermal Cycle Duration | Issue Description / Observations |
|---|---|---|
| 1# | 4H | After testing, the sample display showed normal line display, button functions were normal, and accuracy deviation was less than 1 psi. |
Accuracy Measurement Data
| Item | Low Pressure Accuracy (40 ± 1 psi) | High Pressure Accuracy (90 ± 1 psi) | Hold Pressure Accuracy (120 ± 1 psi) |
|---|---|---|---|
| Reference Gauge Reading (psi) | 39.8 | 89.6 | 119.7 |
| 1# Measured Value (psi) | 40.0 | 89.9 | 119.9 |
Observations: All three measured values fall within the ± 1 psi tolerance band of the reference gauge readings. Display and button functionality were confirmed normal immediately after the 4-hour thermal cycle. No physical deformation, discoloration, cracking, or screen abnormality was observed on the sample.
Conclusion
| Field | Details |
|---|---|
| Test Assessment | After high/low temperature testing, the sample showed no appearance anomalies; function and accuracy tests passed (OK). |
| Standard Applied | Internal Standard — Appearance and function normal after test; accuracy deviation <1 psi |
| Test Conditions | High Temp: 65 °C / 80% RH for 2H → Low Temp: −20 °C for 2H; Ambient: 23 °C / 60% RH |
| Samples Tested | 1 PCS (1#) |
| Verdict | PASS (合格) |
Document Information
| Role | Name (Pinyin) | Date |
|---|---|---|
| Tested By (测试/日期) | Li Guanghua | 2024-09-03 |
| Checked By (审核/日期) | Zhang Ronggui | 2024-09-03 |
| Approved By (核准/日期) | Mai Shaoqiang | 2024-09-03 |
| Field | Details |
|---|---|
| Source File | T500胎压计高低温环境测试-20240903.xlsx |
| Sheet Name | 高低温测试 (High/Low Temperature Test) |
| Report No. | 20240903001 |
| Product Line | Pressure & Measurement |
Frequently Asked Questions
What temperature range was the ETENWOLF T500 tested at in this environmental test?
The T500 was subjected to a two-phase thermal cycle: a high temperature phase at 65 °C with 80% relative humidity for 2 hours, followed immediately by a low temperature phase at −20 °C for 2 hours, totaling 4 hours of environmental exposure.
Did the T500 tire pressure gauge maintain its accuracy after the high/low temperature test?
Yes. After the full 4-hour thermal cycle, the T500’s pressure readings remained within 1 psi of the calibrated reference values at all three test points (low: 40 psi, high: 90 psi, hold: 120 psi), meeting the internal accuracy acceptance criterion.
What standard was used for the T500 high/low temperature environmental test?
This test was conducted against ETENWOLF’s internal reliability standard, which requires that after exposure to extreme temperatures the sample exhibits no appearance anomalies and all display, button, and pressure accuracy functions operate normally.
What was the overall verdict for the T500 after environmental storage testing?
The ETENWOLF T500 received a PASS (合格) verdict. No physical damage or functional degradation was observed following the high and low temperature storage test, confirming the unit’s reliability under extreme storage conditions.
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