Abstract: A water meter of the present invention may accurately measure a flow rate and reduce power consumption. The water meter includes a body including an inlet unit and an outlet unit, an impeller unit provided to rotate due to a fluid flowing in the body, a cover member that covers one side of the impeller unit and includes a guide groove formed therein, and sensors that are provided on one side and the other side of the cover member and are spaced apart from each other to face each other. The impeller unit includes blades interfering with the fluid, a shaft forming a rotational center of the blades, and a cut-off unit that extends from one side of the plurality of blades to be inserted into the guide groove, and selectively cuts off signal transmission between the plurality of sensors.

Abstract: Disclosed are an apparatus and method for remotely transmitting gas usage in a gas meter. The apparatus includes: a main body having a gas inlet and a gas outlet; a diaphragm assembly for pumping gas; a rotary slider controlling the amount of gas introduced to the diaphragm assembly; a counter calculating cumulatively the amount of gas introduced into or discharged from a valve; a remote interface unit digitizing the value cumulatively calculated by the counter to transmit the digitized value to a remote control unit; and a controller controlling the remote interface unit to counter the number of revolutions of the counter so that the cumulatively calculated value of the gas is digitized to display the digitized value on a display unit. The digitized value of the gas is transmitted to the remote control unit. Therefore, the apparatus can exactly measure the flow rate, reduce power consumption, and remotely check gas usage.

Abstract: A water meter of the present invention may accurately measure a flow rate and reduce power consumption. The water meter includes a body including an inlet unit and an outlet unit, an impeller unit provided to rotate due to a fluid flowing in the body, a cover member that covers one side of the impeller unit and includes a guide groove formed therein, and sensors that are provided on one side and the other side of the cover member and are spaced apart from each other to face each other. The impeller unit includes blades interfering with the fluid, a shaft forming a rotational center of the blades, and a cut-off unit that extends from one side of the plurality of blades to be inserted into the guide groove, and selectively cuts off signal transmission between the plurality of sensors.