| 摘要 |
<p>Gas flame control device allows a gas flame to be ignited and detected has a screw-in electric terminal. This can be applied without any changes in construction of a burner and without secondary active or passive voltage supplies in combination with a visual or an electric indicator. The flame can be indicated by a colour sector of an indicator disc which is mounted near the operating fitting, or at a monitoring point, mounted at any distance from the burner; or it can be indicated by an optical or acoustic signal emitted by a battery, or mains-operated switching amplifier. Any other electrical switching process can also be triggered by a relay. The control voltage is transmitted to the switching amplifier via the screw-in terminal.</p> |
