Icon Scientific CF Online Cold Filter Plugging Point Analyzer

CFPP is the lowest temperature at which diesel fuel can still flow through an engine filter. The CF analyzer repeats the ASTM D6371 method in line: the sample is cooled and drawn through a standard wire mesh filter into a pipette under controlled vacuum, and the temperature is lowered by 1 °C at each repeat. The test ends when filling the pipette takes more than 60 seconds; the CFPP is the temperature at which the last filtration began.

Cold Filter Plugging Point (CF) features

• Automatic flush before each test: the sample is heated and paraffin left from the previous test is melted.
• Here, cryo-cooling changes the bath temperature precisely and quickly; 3D-printed insulation prevents ice buildup.
• Optional cloud point input (manual or from an Icon Cp analyzer) shortens the cycle.
• Analog, Modbus (RS-485 or TCP/IP) and OPC outputs.
• Helps reduce additive consumption in diesel and biodiesel streams at refineries.

Choosing Cold Filter Plugging Point (CF)

The pipette taking longer than 60 seconds to fill is the stopping criterion, the same logic as in the standard method. In biodiesel and other green fuel blends, a continuous value is used to reduce additive cost and adjust diesel stream operating conditions.

Tetra handles service of the vacuum pump, pipette and filter group and integration of the analyzer with the DCS through OPC/Modbus. Preparation of the sample line and comparison of results with laboratory measurement are within the project scope.