| 摘要 |
A sensor for detecting a flow rate and a gas valve having the same are provided to sense a very small amount of gas flow, thereby preventing the damage due to the leakage of gas. A sensor(20) for detecting a flow rate comprises the followings: the first sensor(22) which detects the pressure inside gas supply pipe(10) in accordance with the flow rate of gas; and the second sensor(24) sensing a reference pressure. According to the difference between the reference pressure of the second sensor and the pressure in the first sensor, the voltage corresponding to the flow rate of the gas is outputted. The first sensor is inserted into a hole formed in the gas supply pipe. |
