Equipment for controlling differential pressure. The system enables control and monitoring of the filters of the supply units, as indicated in JIG Bulletin No. 58. The main component of the system is this control panel equipped with intrinsic safety for installation in the vehicle cabin.
It has two luminous indicators, one amber for indicating that the system is performing a test and one red indicating that the filter is saturated. When both pilots are flashing, this indicates a fault in the sensor or the installation. There is also a selector with extractable key in the central position leaving the equipment in normal (activated) mode, in the right position for the “test” mode and in the left position to perform the “reset” function when saturation has been detected (22 psi).