便携式瓦检器的许多检定项目(如基本误差、回程误差、报警误差、响应时间和电源电压影响误差等)都要求被检仪器在停止送甲烷标准气体后,等待仪器示值回零。快速检定的方法是,以两台仪器为一组,当检定其中一台时,等待另一台仪器示值回零。根据我们的经验,两台一组检定仅比检定单 Many test items (such as basic error, return error, alarm error, response time and power supply voltage error, etc.) of the portable watt-hour meter require that the instrument under test stop waiting for the instrument to return to zero after stopping sending the methane standard gas. Quick test method is to two instruments as a group, when the test one of them, waiting for another instrument shows the value back to zero. According to our experience, a group of two test only checklist