Tubular sender

Submersible tubular floats are used in association with an electrical gauge to measure the fuel level.How do they workThe fuel contains a float which rises or falls as the level increases or decreases. The contact springs connected to the float slide on two resistance conductors which run parallel to the movement of the float and establish a resistance value proportional to the liquid level. The value of the respective resistance is measured with an indicator and displayed with values ​​expressed in terms of fuel level.The liquid to be checked reaches the conduit through a hole. In this way, the input and output speed and the transmission of short-term changes in the liquid level with respect to the float contained in the conduit (for example in the event of a bend or braking) are dampened. Some pressure switches are earthed; others are devoid of it so the same happens on another connectionThe tubular floats can also be equipped with a signaling contact which, in addition to indicating the reaching of a level limit value (reserve), allows continuous measurement.The VDO tubular float range includes:Without alarm contact, common ground or insulated return (ø 54 mm)Without alarm contact, common ground or insulated return (ø 80 mm)With alarm contact, common ground or insulated return (ø 54 mm)Without alarm contact, common ground or isolated return (special)