Abstract: A cover slides to protrude outward from a mounted position. At the same time, the cover may rotate to be opened, and thus a gap between the cover and an inlet portion on which the cover is mounted is minimized. The cover may be opened or closed easily and conveniently without degrading a sense of beauty and aesthetics at the portion on which the cover is mounted. The cover is caught and locked by a push latch. The cover may slide and rotate by being easily unlocked when being pressed by a hand. A user may easily and conveniently use the cover by a simple operation of pressing the cover. A sudden rotation of the cover is prevented using an elastic support member and a damper, and thus the cover can be conveniently used even while an occurrence of noise or collision between the cover and surroundings is prevented.

Abstract: Non-contact type measuring apparatus able to detect a difference in signal intensity by transmitting a radio frequency (RF) signal having a predetermined frequency through one of two coil antennas and receiving an induced RF current signal transmitted via a medium through the other coil antennas and detect conductivity and a variation in characteristic of a non-conductor by comparing the signal intensity with a signal intensity comparison table for each frequency, which is stored in a controller by measuring a signal intensity for each frequency in advance, on the basis of the signal intensity for each frequency. The non-contact type measuring apparatus can accurately measure not only various elements using a characteristic in which conductivity is varied according to total dissolved solid, temperature, and an amount of a conductive medium and permittivity change characteristic of a non-conductor, but also conductivity and variation in characteristic of the non-conductor.

Abstract: Non-contact type measuring apparatus able to detect a difference in signal intensity by transmitting a radio frequency (RF) signal having a predetermined frequency through one of two coil antennas and receiving an induced RF current signal transmitted via a medium through the other coil antennas and detect conductivity and a variation in characteristic of a non-conductor by comparing the signal intensity with a signal intensity comparison table for each frequency, which is stored in a controller by measuring a signal intensity for each frequency in advance, on the basis of the signal intensity for each frequency. The non-contact type measuring apparatus can accurately measure not only various elements using a characteristic in which conductivity is varied according to total dissolved solid, temperature, and an amount of a conductive medium and permittivity change characteristic of a non-conductor, but also conductivity and variation in characteristic of the non-conductor.