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75 °C Thermal Stability / Self-Heating Substance Tester

HWP01-20SE

This instrument integrates 75 °C thermal stability testing and self-heating substance testing. The 75 °C thermal stability test monitors the temperature difference between the test sample and an inert reference at a constant 75 °C for 48 consecutive hours to determine whether the substance is classified as “too dangerous to transport.” The self-heating substance test places the sample in standard 25 mm or 100 mm cubic wire-mesh baskets and continuously monitors for hazardous self-heating at 100 °C, 120 °C, or 140 °C to determine the packaging group.

Test Parameters

Sample-Reference Temperature Difference, Self-Heating Determination, Temperature Rise, Oxidative Self-Heating Tendency

Application

Chemicals, Civil Explosives, Inspection & Testing, Environmental Protection

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Features

Specifications

Standards

Applications

Videos

Features

Integrated dual-function design: self-heating substance test and 75 °C thermal stability test in one instrument.

Embedded processor, Windows CE operating system.

8-inch LCD touchscreen displaying real-time test status.

Built-in hot air circulation heating system ensuring temperature uniformity and stability.

Digital PID control algorithm for precise heating temperature control with high accuracy.

Test reports include packaging type assessment.

Built-in fault detection with audible and visual alarms for enhanced safety.

Versatile test options allowing users to configure test parameters based on sample characteristics and adjust test sequence arbitrarily.

Custom wire-mesh baskets available in special specifications.

Three-point temperature measurement system ensuring data accuracy and reliability.

Specially designed tube cover pressure relief device for effective internal pressure release.

Fully unattended automated operation.

Real-time display of runtime and temperature with automatic test curve plotting; raw data review available.

Blast-resistant glass observation window on the front; rear pressure relief door designed to open when internal force exceeds 2.5 kgf, ensuring safety.

Fully automated test process requiring no manual intervention; supports parameter setting, data storage, and report viewing.

Specifications

Operating Environment	-5–45 °C, < 95% RH
Temperature Control Range	RT–200 °C
Temperature Control Accuracy	±1 °C
Temperature Fluctuation	≤±0.5 °C
Temperature Uniformity in Test Zone	Below 140 °C: ±1.0 °C, 140–180 °C: ±1.5 °C, 180–200 °C: ±2.0 °C
Thermocouple Measurement Range	-40–1000 °C
Temperature Measurement Resolution	0.1 °C
Temperature Measurement Precision	±1.5 °C or ≤±0.004\|t\|
Response Time	0.5 s
Temperature Measurement Accuracy	Below 300 °C: ±2.5 °C, Above 300 °C: ±0.75% of reading
Standard Timing Range	0–240 h
User-defined Timing Range	0–480 h
Timing Accuracy	±0.01 s
Timing Display Resolution	1 s
Oven Capacity	≥27 L
Self-Heating Test Wire-Mesh Baskets	25 mm and 100 mm side-length cubes
75 °C Test Container Dimensions (Φ × H)	(50.5 ± 0.5) mm × 150 mm
Internal Chamber Dimensions	350 mm × 350 mm × 400 mm
Safety Valve Opening Pressure	60 kPa

Applications

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Videos

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Download

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Q&A

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UN Recommendations on the Transport of Dangerous Goods — Manual of Tests and Criteria, Section 33.3.1.6, Test N.4: Test method for self-heating substances

UN Recommendations on the Transport of Dangerous Goods — Manual of Tests and Criteria, Section 13.6.1, Test 3(c): Thermal stability test at 75°C

EN 13631-2:2002: Explosives for civil uses — High explosives — Part 2: Determination of thermal stability of explosives

Complies with the above standards and their equivalent national or industry standards.

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