Automated Cleveland Open Cup Flash Point Tester

aco-8 / aco-8e / aco-8as / aco-8eas

Since 1966, Tanaka has been delivering automated flash point testers for higher productivity at petroleum laboratories. The theme of the 8th generation model series is “ Ergonomic, Versatile, Robust and Safe “

●Ergonomic: Color coordinated display and switches for high visibility / intuitive operation, and universal design
●Versatile: USB port for USB flash drive or keyboard, password protection and enhanced data storage
●Robust: Premium design and high quality finish suited for many years of reliable use
●Safe: Enhanced safety with fire containment system (Default for apm, atg & aco, optional for abl)

Further improved Swing Arm Assembly for easy setting and cleaning :
After inserting the test cup in the instrument, just lower the swing arm assembly onto the test cup to set all the necessary components for the test, including the ignition source, temperature sensor, flash detector and stirrer (in case of apm, atg and abl series). After the test, lift the arm to the complete upright positon for easy cleaning.

aco-8 / aco-8e / aco-8as / aco-8eas Automated Cleveland Open Cup Flash Point Tester

aco-8 is an automated Cleveland Open Cup (COC) flash & fire point tester.

Flash point as well as fire point can be determined automatically. The fire point is detected when the double ionization rings detect 5 sec of continuous burning.

In addition to the existing gas ignition models (aco-8/8as), 2 new electric ignition models (aco-8e/8eas) have been launched. An electric igniter coil replaces the gas flame which allows the user to remove combustible gas from the lab and operate in a safer environment.

Fire containment by a metallic lid covers the test cup automatically when a sustained fire is detected. Model aco-8as and aco-8eas are for testing bituminous materials.


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Model aco-8as for bitumen
applications (Equipped with
TFE surface skin remover)

Fire containment lid in open

Fire Containment lid closed

Model aco-8e & aco-8eas
(Electric ignition model)


aco-8 aco-8as aco-8e aco-8eas
Test Methods ASTM D92, ISO 2592, IP 36,
JIS K 2265-4, AASHTO T48
JIS K 2265-4
Related Test Methods ASTM D92, ISO 2592, IP 36, AASHTO T48
Measuring Range Ambient to 400°C
Temperature Sensor PT-100 in stainless steel sheath
Flash Detector Double ionization rings
Ignition Source Gas ignition with automatic lighting Electric ignition coil
I/O Port RC-232C and USB, 1 each
Size (W x D x H) 230 x 470 x 400 mm
Weight 17 kg
Power Consumption AC 100 to 120 V 1,500 VA (max) 50 / 60Hz
AC 220 to 240 V 1,300 VA (max) 50 / 60Hz