FEP Permeation Model (TP)
The TP model calibrated helium leak standard was developed to calibrate vacuum systems and helium leak detectors that test under vacuum. This model works well in an industrial environment and is the best choice for applications where the calibrated leak standard will be exposed contaminates, such as on a vacuum chamber application. Cincinnati Test Systems utilizes the finest grade of FEP available to manufacture their FEP leak elements. The leak elements have been tested at temperatures ranging from 10°C to 40°C yielding a temperature coefficient of approximately 2.5%/°C with no anomalous behavior.