A fuel level sender is a device that measures the amount of fuel in a tank. It is typically located inside the fuel tank and is connected to a fuel gauge on the dashboard. The fuel level sender uses a float that rises and falls with the level of fuel in the tank.
Robust fuel sys senders are fuel level senders that are designed to be resistant to damage from fuel vapors and other harsh conditions. They are typically used in vehicles that are exposed to extreme weather conditions or that are used for off-road purposes.
Wo senders are fuel level senders that do not have a float. Instead, they use a sensor that measures the capacitance of the fuel tank. Capacitance is the ability of a material to store electrical energy. The capacitance of a fuel tank changes as the level of fuel in the tank changes.
Wo senders are typically less expensive than Robust Fuel sys senders, but they are also less accurate. They can be affected by changes in temperature and humidity, and they can also be damaged by fuel vapors and other harsh conditions.
