Temperature measurement is essential in many industries, appliances, and technological systems. Whether you work with industrial equipment, heating systems, or electronic devices, understanding what
Tag: what is a thermocouple on a water heater
A thermocouple on a water heater is a safety device that helps ensure the gas supply remains shut off if the pilot light goes out. Found in many gas-powered water heaters, the thermocouple is a small metal sensor located near the pilot flame. When heated by the pilot light, it generates a tiny electrical current that signals the gas valve to stay open. If the pilot light goes out, the thermocouple cools down and stops producing this current, causing the gas valve to close and preventing potentially dangerous gas leaks.