Document Overview
Key Findings All three X5PRO inflator samples measured front-face sound pressure levels between 80.4 dB and 82.9 dB at 1 m distance, falling within the acceptable evaluation range of 35–100 dB under internal standard criteria — results are provided for reference only. Product: NPD Inflation…
- Document type
- Certification Report
- Prepared by
- Daniel Wright
- Published
- Last reviewed
- Topics
- Noise Testing
Key Findings
All three X5PRO inflator samples measured front-face sound pressure levels between 80.4 dB and 82.9 dB at 1 m distance, falling within the acceptable evaluation range of 35–100 dB under internal standard criteria — results are provided for reference only.
- Product: NPD Inflation Pump — Model X5PRO
- Report No.: 2025091801
- Test Date: 2025-09-18
- Samples: 3 units (5#, 6#, 7#)
- Measurement distance: 1 m (microphone horizontal to front face)
- Sound pressure range measured: 80.4 dB – 82.9 dB
- Acceptance band: Lmax 35–100 dB
- Verdict: For Reference Only
Test Overview
| Field | Detail |
|---|---|
| Report Title | Environmental Noise Test Report |
| Product No. / Name | NPD Inflation Pump |
| Model / Type Specification | X5 (X5PRO) |
| Report No. | 2025091801 |
| Test Date | 2025-09-18 |
| Sample Quantity / No. | 3 PCS |
| Test Type | Reliability Test |
| Test Standard | Internal Standard |
| Test Purpose | Evaluate motor noise and vibration under different operating scenarios |
| Test Procedure (summary) | With product powered on, measure noise level — microphone placed at 1 m horizontal distance from the front face of the product |
| Acceptance Criterion | Sound pressure level (Lmax) within 35–100 dB |
| Manufacturer / Brand | ETENWOLF |
Test Equipment & Setup
| Item | Detail |
|---|---|
| Test Equipment | Sound Level Meter (Noise Meter) |
| Microphone Distance | 1 m horizontal from front face of product |
| Room Temperature | 23 °C |
| Relative Humidity | 60 % |
| Product State During Test | Powered on (operating state) |
| Measurement Direction | Front face (正面) |
| Evaluation Metric | Sound pressure level Lmax (dB) |
Test Procedure
- Pre-test: Confirm ambient temperature (23 °C) and humidity (60 %) meet test conditions. Verify the sound level meter is calibrated and positioned at 1 m horizontal distance from the front face of the unit under test.
- Sample preparation: Label samples as 5#, 6#, and 7#. Place each sample in the standard test position on a stable surface.
- Power on: Switch the inflator to its normal operating state.
- Measurement: Record the peak sound pressure level (dB) displayed on the noise meter while the unit is running. Note the reading for each sample.
- Post-test: Power off the unit. Record results, observations, and any anomalies in the test log.
- Acceptance criteria: Sound pressure level must fall within Lmax 35–100 dB. Results outside this range are non-conforming. Results within range are recorded as conforming or for reference per the evaluation conclusion.
Test Data & Results
| Sample No. (编号) | Direction (方向) | Microphone Distance (距离麦克风距离) | Noise Level — dB (噪音) |
|---|---|---|---|
| 5# | Front (正面) | 1 M | 80.4 |
| 6# | Front (正面) | 1 M | 82.9 |
| 7# | Front (正面) | 1 M | 82.0 |
Observations: All three samples produced front-face sound pressure readings between 80.4 dB and 82.9 dB at 1 m distance. The maximum recorded value of 82.9 dB (sample 6#) remains well within the upper bound of the 35–100 dB acceptance band. No anomalies or irregular noise events were noted during testing. Results are designated for reference only per the evaluator’s assessment.
Conclusion
| Item | Detail |
|---|---|
| Verdict | For Reference Only (供参考) |
| Standard Applied | Internal Standard — Lmax 35–100 dB |
| Test Conditions | 23 °C, 60 % RH, microphone at 1 m horizontal from front face |
| Samples Tested | 3 PCS (5#, 6#, 7#) |
| Result Range | 80.4 dB – 82.9 dB |
| Within Acceptance Band? | Yes — all values within 35–100 dB |
| Pass / Fail | For Reference Only (neither Pass nor Fail formally declared) |
Document Information
| Role | Name (Pinyin) | Date |
|---|---|---|
| Tested By (测试/日期) | Li Guanghua | 2025-09-18 |
| Checked By (审核/日期) | Zhang Ronggui | 2025-09-18 |
| Approved By (核准/日期) | Mai Shaoqiang | 2025-09-18 |
| Source File | X5充气泵-噪音测试 2025.9.18.xlsx | — |
| Report No. | 2025091801 | — |
| Sheet Name | 噪音测试 (Noise Testing) | — |
Frequently Asked Questions
How loud is the ETENWOLF X5PRO tire inflator during operation?
In testing conducted at 1 m horizontal distance from the front face, the X5PRO measured between 80.4 dB and 82.9 dB across three production samples. This is comparable to a busy road or a kitchen blender at close range — audible, but within normal limits for a portable inflator.
What noise standard does the X5PRO comply with?
The X5PRO is evaluated against ETENWOLF’s internal noise standard, which sets an acceptance band of Lmax 35–100 dB for sound pressure level. All three tested samples fell within this range. The results are designated for reference rather than a formal pass/fail certification against a published external standard.
At what distance is the noise measurement taken?
Noise measurements are taken with the microphone positioned at exactly 1 m horizontal distance from the front face of the inflator while it is running in its normal powered-on state, at room temperature (23 °C) and 60 % relative humidity.
What does ‘For Reference Only’ mean in this test report?
‘For Reference Only’ (供参考) indicates that the test results are informational — they confirm the product’s noise output is within the defined evaluation range, but the report does not constitute a formal regulatory compliance declaration. It is used internally to benchmark motor noise and vibration across different operating scenarios.
Related Products
Explore other ETENWOLF inflation tools and their test documentation:
- ETENWOLF Official Site — full product range and specifications
- ETENWOLF X5PRO Tire Inflator — product overview (URL to be updated when listing is live)