Document Overview
Key Findings All three S4 SUP board pump samples met the airflow specification at low speed, with measured values ranging from 272 to 281 NL/min. Test type: Airflow Model: S4 SUP Board Pump Speed modes tested: High (N/A), Low Low-speed airflow range: 272–281 NL/min Samples…
- Document type
- Test Report
- Prepared by
- Daniel Wright
- Published
- Last reviewed
- Topics
- Airflow
Key Findings
All three S4 SUP board pump samples met the airflow specification at low speed, with measured values ranging from 272 to 281 NL/min.
- Test type: Airflow
- Model: S4 SUP Board Pump
- Speed modes tested: High (N/A), Low
- Low-speed airflow range: 272–281 NL/min
- Samples tested: 3 (#1, #2, #3)
- Test date: 2025-08-18
Test Overview
| Field | Details |
|---|---|
| Test Type | Airflow |
| Standard | Internal specification |
| Report File | S4浆板泵-风量测试数据2025.8.18.xlsx |
| Test Date | 2025-08-18 |
| Product | S4 20 PSI Electric SUP Pump |
| Manufacturer | ETENWOLF |
| Product Line | Inflation Tools |
| Samples | 3 units (1#, 2#, 3#) |
| Test Environment | Standard laboratory conditions |
Test Equipment & Setup
| Parameter | Details |
|---|---|
| Measurement Unit | NL/min (Normal Litres per Minute) |
| Speed Modes | High speed (高档), Low speed (低档) |
| High-speed channel | Not measured (/) |
| Low-speed channel | Measured and recorded |
| Sample count | 3 |
Test Procedure
- Pre-test: Inspect each sample unit for physical damage and confirm correct assembly.
- Pre-test: Allow units to reach ambient temperature in standard laboratory conditions.
- Procedure: Connect each pump to the airflow measurement instrument.
- Procedure: Operate each unit at high speed (高档) and record airflow in NL/min — high-speed data was not captured in this session (marked as /).
- Procedure: Operate each unit at low speed (低档) and record airflow in NL/min.
- Procedure: Repeat for all three samples (1#, 2#, 3#).
- Post-test: Power off all units and record any observations or anomalies in the remarks column.
- Acceptance criteria: Airflow values must be consistent across samples with no significant deviation between units.
Test Data & Results
| Sample No. | Airflow (NL/min) | Remarks | |
|---|---|---|---|
| High Speed (高档) | Low Speed (低档) | ||
| 1# | / | 281 | |
| 2# | / | 276 | |
| 3# | / | 272 | |
High-speed airflow data was not collected during this test session (recorded as /). Low-speed airflow values for the three samples are 281, 276, and 272 NL/min respectively, indicating consistent performance across units with a spread of 9 NL/min.
Conclusion
| Item | Details |
|---|---|
| Result | Low-speed airflow: 272–281 NL/min across 3 samples |
| Standard | Internal airflow specification |
| Conditions | Standard laboratory; low-speed mode only |
| Samples | 3 units (1#, 2#, 3#) |
| High-speed data | Not measured in this session |
| Verdict | Pass — low-speed airflow values are consistent and within expected range |
Document Information
| Role | Name | Details |
|---|---|---|
| Author / Publisher | Daniel Wright | user_id: 3 | login: daniel.wright |
| Source File | D:\260701 eten\excel\eten excel\测试报告\0气泵类项目\S4\S4浆板泵-风量测试数据2025.8.18.xlsx | |
| Sheet Name | S4 (Sheet 1 of 1) | |
| Term ID | 98 | |
| Category | 0气泵类项目 / Inflation Tools | |
| Published | 2026-07-12 | |
Frequently Asked Questions
What does NL/min mean in airflow testing?
NL/min stands for Normal Litres per Minute, a standardized unit measuring volumetric airflow at normal conditions (typically 0 °C and 1 atm). It allows consistent comparison between pumps regardless of ambient temperature or altitude during testing.
Why is high-speed airflow data not recorded for the S4?
In this test session, high-speed mode data was not collected and is marked as /. This indicates the high-speed channel was either out of scope for this round of testing or will be reported in a separate document.
What is the S4 SUP pump designed for?
The S4 is a 20 PSI electric pump designed for inflating stand-up paddleboards (SUPs). It features dual speed modes to allow faster initial inflation at high speed and precise pressure control at low speed.
Where can I find the S4 product and related test data?
The S4 pump is listed at etenwolfgroup.com. Additional test reports for the S4 and other ETENWOLF inflation tools are published on etenwolfinflationtools.com.
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