PEEK plastic pitot probes offer excellent chemical resistance and surprising toughness at low temperatures (-100°C), making them versatile for specialized flow measurement scenarios.Sensor Calibrationwelcome to click on the website to learn more!
PEEK’s chemical resistance spans a wide range of fluids, including dilute acids, bases, and hydrocarbons, with a corrosion rate <0.01mm/year in most industrial chemicals. In a pharmaceutical manufacturing test, PEEK probes remained unharmed after 6 months in 10% sulfuric acid, while 316 stainless steel showed pitting corrosion.
At low temperatures, PEEK retains impressive toughness. Its notched impact strength remains >20 kJ/m?? at -100°C, avoiding the brittle fracture that plagues many plastics. A cryogenic wind tunnel test found PEEK probes survived 200 thermal cycles (20°C to -100°C) without cracking, whereas nylon probes shattered after 50 cycles.
However, PEEK’s temperature 上限 is 260°C—above this, it softens, altering hole dimensions. A polymer processing plant learned this after PEEK probes in a 300°C extruder test showed 4% measurement drift, requiring replacement with ceramic probes.
PEEK’s smooth surface (Ra <0.8μm) reduces airflow disturbance, making it suitable for low-turbulence flow tests. In a cleanroom airflow study, PEEK probes caused 30% less pressure drop than stainless steel probes of the same size.
For chemical processing, cryogenic environments, or cleanrooms—where metal corrosion or particle generation is a concern—PEEK probes offer a unique combination of properties.