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Views: 0 Author: Site Editor Publish Time: 2025-07-01 Origin: Site
Introduction
Flash point is a key safety parameter for flammable liquids, indicating the lowest temperature at which vapors ignite in air. The Automatic Open Cup Flash Point Tester from Changsha Friend Experimental Analysis Instrument Co., Ltd. automates the open‑cup method (ASTM D92/ISO 2592), improving repeatability and operator safety.
Testing Principle
A measured volume of sample is placed in an open brass cup, heated at a controlled rate (1–6 °C/min). At preset intervals, an automatic ignition source traverses the cup’s rim. The tester’s optical sensor detects the flash event, and the corresponding temperature is recorded as the flash point.
Technical Design Features
PID‑Regulated Heating: Ensures uniform ramp rates and minimal overshoot.
Automated Ignition Assembly: Controls spark or flame application timing precisely.
Optical Detection: Eliminates subjective visual judgment by sensing light emission at ignition.
Safety Interlocks: Over‑temperature cut‑off and flame‑shield barriers protect operators.
Industry Applications
Fuel Refineries: Classify gasoline, kerosene, and diesel grades for regulatory compliance.
Chemical Plants: Test solvent mixtures and VOC‑containing formulations.
Lubricant Blenders: Verify flash points of base oils and additive packages.
Best Practices
Sample Clarification: Filter out particulates that could create localized hotspots.
Cup Cleaning: Remove residue films between tests to maintain consistent heat transfer.
Ignition Source Maintenance: Replace electrodes or igniter tips per service schedule.
Ambient Monitoring: Record laboratory temperature and barometric pressure for traceability.
