What is the maximum allowable dropout voltage for an electric safety valve using a thermopile?

The maximum allowable dropout voltage for an electric safety valve using a thermopile is 60 millivolts. This specification is critical because it defines the minimum voltage level that must be maintained for a thermopile to effectively keep the safety valve open. If the voltage falls below this threshold, it indicates that the thermopile may not be generating enough power to keep the valve energized, which could lead to a safety hazard if the gas flow is not controlled properly.

Thermopiles function as temperature sensors that generate a small DC voltage based on the temperature difference across them. A dropout voltage exceeding 60 millivolts could indicate a fault condition or malfunction, meaning that the valve may unintentionally close, cutting off gas supply and potentially leading to unsafe operating conditions. Understanding this threshold is essential for technicians to ensure the reliable operation of gas safety systems in commercial food equipment.