60000-0 SETA HiReTS TESTER

  (Click on picture to enlarge.)

A self-contained instrument that determines the thermal stability of aviation turbine and other fuels under turbulent flow conditions at different flow rates and temperatures.  A pump supplies a constant flow of fuel under pressure through a heated stainless steel capillary tube. The temperature of the tube is controlled to maintain a constant temperature of the fuel at the outlet.  Insoluble products in the fuel sample are deposited on the inner surface of the tube. The deposits act as thermal insulator between the hot wall of the tube and the cooler fuel flowing through the tube, resulting in localized hot-spots on the tube wall.  A precision contactless pyrometer scans the tube, measuring the external surface temperature of the tube along its length. The integral computer records the temperature variations caused by the deposits, and computes the HiReTS number.  Results are displayed on the instrument’s screen in real time, saved to the floppy disk drive, and printed out on the internal printer. An RS232 interface is provided to allow the data to be downloaded to a personal computer.  The test procedure is highly automated, with step by step instructions displayed on the screen and an on-line context sensitive help system.  Key test parameters are user configurable, and may be saved and recalled. Up to 8 previous test results are automatically stored.

SUPPLIED WITH: Instruction manuals and an integral tutorial.

Traditional test methods used to assess the thermal stability of jet turbine fuel were first developed 30 years ago and in many circumstances no longer provide a comprehensive evaluation of thermal stability. In particular the traditional measurement of a fuel sample in a laminar flow test does not simulate the normal turbulent flow conditions to which fuel is subjected within an engine/fuel system. In addition, the HiReTS allows real time analysis of oxidation over a range of user adjustable parameters, and produces a numerical result.  Seta-HiReTS Tester was first introduced by Shell Research and, with its associated test methods, provides the aviation and allied fuel industries with a test procedure that definitively and rapidly determines Thermal Oxidation Stability of modern fuels. Measurements accurately simulate real operating conditions and provide researchers with a means to assess and develop fuels, middle distillates and additives.