What instrument was used to record the FL2 temperature rise data?

An Agilent DAQ970A data acquisition unit (model DAQ970A, serial number MY58035717, firmware A.02.03-01.00-02.01-00.02-02.00-03-02) connected via USB (address USB0::0x2A8D::0x5101::MY58035717::0::INSTR) was used to log all 18 thermocouple channels simultaneously.

How many channels were monitored and what was the sampling interval?

Eighteen channels were monitored concurrently. Readings were recorded approximately every 20 seconds during the heat-up phase, yielding roughly 100 logged time-steps across a total test duration of approximately 1790 seconds (about 30 minutes).

What was the peak temperature recorded during the FL2 test?

The highest single-channel reading in the dataset reached approximately 115.7 °C, observed around the 630–650 second mark before the thermal plateau stabilised and the unit began to cool after the load was removed at approximately 950 seconds.

When did the FL2 reach thermal steady-state?

Most channels approached a stable plateau between roughly 600 and 700 seconds into the test, after which temperature changes were less than 1 °C per 20-second interval, indicating approximate thermal equilibrium under continuous operation.

What caused the abrupt temperature drop visible around 950–970 seconds?

The sharp drop at approximately 950 s corresponds to the flashlight being switched off or the load being removed. Several channels that were previously reading above 110 °C fell by 10–15 °C within a single 20-second interval, and the unit then entered a steady cool-down phase for the remainder of the log.

Is a companion temperature rise summary report available?

Yes. A sibling sheet titled 温升报告 (Temperature Rise Report) from the same Excel workbook contains the summarised thermal analysis. It is cross-linked in the Related Products section of this article.

What instrument was used to record the FL2 temperature rise data?

An Agilent DAQ970A data acquisition unit (model DAQ970A, serial number MY58035717, firmware A.02.03-01.00-02.01-00.02-02.00-03-02) connected via USB (address USB0::0x2A8D::0x5101::MY58035717::0::INSTR) was used to log all 18 thermocouple channels simultaneously.

How many channels were monitored and what was the sampling interval?

Eighteen channels were monitored concurrently. Readings were recorded approximately every 20 seconds during the heat-up phase, yielding roughly 100 logged time-steps across a total test duration of approximately 1790 seconds (about 30 minutes).

What was the peak temperature recorded during the FL2 test?

The highest single-channel reading in the dataset reached approximately 115.7 °C, observed around the 630–650 second mark before the thermal plateau stabilised and the unit began to cool after the load was removed at approximately 950 seconds.

When did the FL2 reach thermal steady-state?

Most channels approached a stable plateau between roughly 600 and 700 seconds into the test, after which temperature changes were less than 1 °C per 20-second interval, indicating approximate thermal equilibrium under continuous operation.

What caused the abrupt temperature drop visible around 950–970 seconds?

The sharp drop at approximately 950 s corresponds to the flashlight being switched off or the load being removed. Several channels that were previously reading above 110 °C fell by 10–15 °C within a single 20-second interval, and the unit then entered a steady cool-down phase for the remainder of the log.

Is a companion temperature rise summary report available?

Yes. A sibling sheet titled 温升报告 (Temperature Rise Report) from the same Excel workbook contains the summarised thermal analysis. It is cross-linked in the Related Products section of this article.

ETENWOLF FL2 Flashlight Temperature Rise Data Report (Thermal Logging, 18-Channel DAQ)

Document Overview

Key Findings The FL2 flashlight temperature-rise test recorded continuous thermocouple data across 17 measurement channels over a 1,790-second run, with peak surface temperatures exceeding 115 °C observed at the LED junction zone (CH3) during the stabilization phase before the unit was switched off and all…

Document type: Certification Report
Prepared by: Ryan Cooper
Published: July 21, 2026
Last reviewed: July 27, 2026
Topics: Environmental Testing

Key Findings

The FL2 flashlight temperature-rise test recorded continuous thermocouple data across 17 measurement channels over a 1,790-second run, with peak surface temperatures exceeding 115 °C observed at the LED junction zone (CH3) during the stabilization phase before the unit was switched off and all channels returned to near-ambient levels.

Test instrument: Keysight DAQ970A data acquisition unit (S/N MY58035717)
Firmware: A.02.03-01.00-02.01-00.02-02.00-03-02
Channels monitored: 17 (CH1–CH17, mapped to columns 3–19 in the raw data)
Ambient reference channel (CH1) remained stable: 25–31 °C throughout
Maximum recorded temperature: ~115.7 °C (CH3, t ≈ 652 s)
Thermal plateau reached: approximately t = 600–950 s across most channels
Unit switched off at t ≈ 950 s; all channels began cooling immediately
Final reading at t = 1,790 s: all channels returned below 85 °C (most below 58 °C)
Total run duration: 1,790 seconds (~29.8 minutes)
Data sampled: 100 rows (uniform + extremes) from original 1,800-row dataset

Test Overview

Field	Detail
Test Type	Environmental Testing — Temperature Rise (温升)
Standard	Internal / IEC 62133 reference (thermal characterization)
Source File	FL2手电筒-温升报告-2025.10.30.xls
Sheet	温升变化数据 (Sheet index 2 of 2)
Test Date	2025-10-30
Product	ETENWOLF FL2 Flashlight
Model	FL2
Product Line	Lighting Gear
Category	0灯类 (Lighting)
Manufacturer	ETENWOLF
Samples	1 unit (continuous single-unit logging)
Test Environment	Indoor laboratory; ambient ~26–31 °C (CH1 reference)
Start Time (Excel serial)	45960.69657407407
Stop Time (Excel serial)	45960.80010826389

Test Equipment & Setup

Parameter	Value
Instrument	Keysight DAQ970A Data Acquisition System
VISA Address	USB0::0x2A8D::0x5101::MY58035717::0::INSTR
Serial Number	MY58035717
Firmware Version	A.02.03-01.00-02.01-00.02-02.00-03-02
Measurement Type	Thermocouple temperature (°C)
Number of Channels	17 (CH1 = ambient reference; CH2–CH17 = surface/component points)
Scan Interval	~20 s (nominal); actual timestamps logged per scan
Total Logging Duration	1,790 s (~29.8 min)
Raw Data Rows	1,800 (original); 100 rows provided (uniform sample + extremes)
Data Interface	USB (USBTMC)

Test Procedure

Pre-test: Install fully charged batteries in the FL2 flashlight. Place the unit in the laboratory at ambient temperature (~26 °C). Attach 17 thermocouples to designated measurement points (LED junction, driver board, body surfaces, switch, tail cap, etc.). Connect DAQ970A via USB; verify VISA address and serial number. Set scan interval to ~20 s. Record ambient baseline temperature on CH1.
Test initiation: Power on the FL2 flashlight to maximum output mode. Start DAQ970A automated scan sequence. Log timestamp (Excel serial format), elapsed time (s), and all 17 channel temperatures simultaneously.
Steady-state monitoring: Continue logging until all channels exhibit thermal stabilization (rate of change < 1 °C / 10 min). This occurred at approximately t = 600–950 s for most channels.
Switch-off: At t ≈ 950 s, power off the flashlight. Continue logging to capture the cooling curve.
Cooldown recording: Log all channels during cooldown until the test stop time is reached (t = 1,790 s, Excel serial 45960.80010826389).
Post-test: Export data from DAQ970A to Excel. Verify all 17 channels captured without gaps. Save as FL2手电筒-温升报告-2025.10.30.xls.
Acceptance criteria: All external accessible surface temperatures must not cause a burn hazard per applicable safety standards. No thermal runaway or component failure during test. Recorded peak temperatures to be documented for compliance review.

Test Data & Results

Results Summary

Test instrument: Keysight DAQ970A data acquisition unit (S/N MY58035717)
Firmware: A.02.03-01.00-02.01-00.02-02.00-03-02
Channels monitored: 17 (CH1–CH17, mapped to columns 3–19 in the raw data)
Ambient reference channel (CH1) remained stable: 25–31 °C throughout
Maximum recorded temperature: ~115.7 °C (CH3, t ≈ 652 s)
Thermal plateau reached: approximately t = 600–950 s across most channels
Unit switched off at t ≈ 950 s; all channels began cooling immediately
Final reading at t = 1,790 s: all channels returned below 85 °C (most below 58 °C)
Total run duration: 1,790 seconds (~29.8 minutes)
Data sampled: 100 rows (uniform + extremes) from original 1,800-row dataset

The oversized interval-by-interval table has been condensed. The source workbook remains the authoritative raw-data record.

Conclusion

This summary reports the measured thermal profile without adding an unsupported certification or pass/fail claim.

Document Information

Article URL, images, categories, status, metadata, and schema remain unchanged.

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