Reaction time for the sensor is typically a few seconds for light or middle weight fuels such as gasoline, jet fuel, and diesel. It is also responsive to crude oil and some heavier weight fuels and heating oils but becomes progressively slower as the fuel RAYCHEM TraceTek Fast Fuel Sensors (FFS) are fast acting sensors designed to detect hydrocarbon fuel. The sensor ignores water, but detects a thin film of fuel floating on the surface. volatility decreases.

In many cases the FFS sensor will reset after the sensor is removed from contact with the spill and the fuel is allowed to evaporate. Some heavier fuels require that the sensor be soaked in isopropyl alcohol or naphtha in order to clear the heavier fuel residuals. The sensor may be used repeatedly without replacement until it will no longer reset. The sensor fails in the “alarm” state so there is no ambiguity when it is necessary to replace the sensor. TT-FFS sensors are designed to work only with RAYCHEM TraceTek leak detection instruments, and are not suitable for use with other non- RAYCHEM TraceTek circuits. Speak with your local nVent representative to find out more about options for controllers and alarm panels. The sensor may be periodically tested using a small amount naphtha (lighter fluid). The sensor resets when the naphtha evaporates.

产品资料链接：TTFFS产品资料