Abstract: Invention provides for a fluid level sensor with a guide body (10) having a float cavity (62) with a covering (63), which is mounted onto a flange (40). The flange is provided with a rib (51) to increase holding strength. A float (70) which slides along the float cavity (62) when there is a variation of the fluid level. The float cavity (62) makes point contacts with the float (70). A PCB assembly (90) placed along the guide body (10) for fluid level indication, and magnet (71) mounted onto the float (70) activates reed switch (93) of the PCB assembly (90) to indicate the fluid level.

Abstract: The present invention relates to a fluid level sensor comprising, housing having a snap fit onto which a thick film resistor card is fixed, a shaft with one side of the shaft passing through a wiper arm, at least one washer and a spring to mate with the housing, a housing cover to cover the housing wherein other side of the shaft mates with the cover, and a float arm fixed to the shaft which moves the wiper arm when the fluid level varies, wherein the wiper arm makes contact with the thick film resistor card to indicate the fluid level. The invention further provides a method to detect fluid level. In addition, the invention also provides a method of assembling a fluid level sensor to increase the stability, uniformity, accuracy and repeatability of the sensor over its life.