| 摘要 |
There is described a gas meter sensor for detecting movement of a rotating element of a gas meter, the gas meter sensor comprising first and second sensors, wherein the first sensor is an optical sensor and the second sensor is a magnetic sensor. Also described, is a mounting bracket suitable for mounting a gas meter sensor, comprising a gas meter sensor receiving portion for attaching at least a part of the gas meter sensor to the bracket; a first aperture adjacent the gas meter sensor receiving portion; and a fixing element for fixing the mounting bracket to a gas meter such that aperture is located adjacent a rotating element in the gas meter. A kit of parts is also described, comprising a gas meter sensor and a mounting bracket. Also disclosed is a means for calibrating an optical means for detecting reflected radiation from the rotating element, in which binary 1 value is given when a threshold is reached. During the calibration routine, the intensity emitted radiation is varied to obtain reference intensity. A method of calibrating a three-dimensional magnetic sensor to allow for magnetic saturation in one or directions is also described. |
