AutoSwitch Model PEC-112
Automatically selects CNG or gasoline for electronic fuel-injected vehicles and displays fuel level on vehicle's own gauge
What It Does
This is a simple, economical and fail-safe device that improves CNG utilization and eliminates manual switching between fuels. It senses pressure in the Compressed Natural Gas tank, and when pressure (equated to volume of fuel remaining in the tank) reaches a near "empty" point, it automatically switches to gasoline. As long as sufficient CNG is aboard, the Auto/Switch Model PEC-112 will ensure that CNG is the fuel used. If ever there is a failure in a system component, the Auto/Select® controller instantly switches to gasoline.
A special feature of the PEC-112 controller is its ability to convert CNG fuel-level data to read on the vehicle's own fuel gauge, and the indicating lamp shows when gasoline is being used.
How It Works
Installation: the PEC-112 pressure sensor mounts to any standard CNG conversion kit. The control center and indicating lamp are compact so they can be mounted under the dashboard and connected to the sensor by weatherproof cabling.
Operation: Auto/Switch devices are designed to work with 2400-3000-3600 psi CNG systems. When pressure inside the CNG tank drops to 150 psi, the PEC-112 control switches to gasoline. It automatically returns to CNG wheh re-fueling raises the pressure to level over 575 psi. The limit points prevent oscillating between fuels. The dash-mounted indicating lamp tells the driver which fuel his vehicle is using at all times, while the control center provides linearized output compatible with the vehicle's own dashboard display unit.
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