Baso K19AT-60 Thermocouple 60 Inch

The BASO Gas Products K19AT-60 is a 60-inch long thermocouple, a crucial safety component in your gas furnace or boiler, weighing around 0.19 pounds. Thermocouples, unlike electrical components, don't require a specific voltage to function. Instead, they generate a small millivolt (mV) signal based on temperature variations. Installed in the flame path of your furnace, the K19AT-60 uses two dissimilar metals that react to heat, producing a voltage typically ranging from 25-35 mV. This millivolt signal acts as a safety switch. It's sent to the gas control valve, regulating gas flow. If the flame extinguishes, the thermocouple cools rapidly, causing the voltage to drop (around 8mV in this case). This voltage drop signals the gas control valve to shut off the gas supply, preventing leaks and potential hazards.