The low-mass measuring cell traps a small amount of the sample that is then cooled at a controlled rate by the peltier cooler. At pre-set temperature intervals, the sample is pressure pulsed by a stepper motor driven piston cylinder. Sample movement is then detected by a differential pressure sensor connected across the cell. The cooling is continued until the applied differential pressure pulse has been attenuated sufficiently to indicate that the sample is no longer moving. This temperature is taken as the no-flow point, and the corresponding pour point is also reported. The old sample is then warmed and flushed away, and the cycle is repeated. If the sample enters the unit at too low a temperature, the peltier control can be reversed to warm the sample before continuing with the analysis.

Excellent repeatability: with advanced detection algorithms and pulse width modulated variable-rate peltier cooler control, the analyser achieves better repeatability than the standard test methods. Best in class cooling performance: with reduced thermal losses thanks to the low-mass measuring cell, patented vacuum insulation system, and thermally insulated measuring cell, the analyser provides the highest differential between cooling water temperature and the lowest measurable pour and no flow points. Long-life and low maintenance: as well as giving improved cooling performance, the vacuum insulation effectively eliminates premature failure of the measuring cell caused by condensation, and overcomes cooling errors due to ice formation. This results in a low-maintenance or even maintenance-free analyser for years at a time. Cell service exchange plan: to aid planned maintenance and reduce downtime in the unlikely event of a problem, Icon operates a Pour Point cell service exchange plan. The complete vacuum chamber is sent to Icon or their local representative, and a fully refurbished chamber is delivered by return. This process enables considerable savings on the individual cost of parts, and can also save you time and money by reducing the risks associated with carrying out your own cell repairs.