A well test burner system includes a plurality of burner nozzles. At least one of the burner nozzles includes a well product inlet, an air inlet, an air/well product mixture outlet, and an automatic valve. The automatic valve is responsive to a remote signal to cease flow of well product to the air/well product outlet.

A well test burner system includes a plurality of burner nozzles. At least one of the burner nozzles includes a well product inlet, an air inlet, an air/well product mixture outlet, and an automatic valve. The automatic valve is responsive to a remote signal to cease flow of well product to the air/well product outlet.

A method for turning an atomizing burner from an ON state to an OFF state is provided. The burner has independently controllable flows of atomizing air, combustion air, and fuel flow, the burner in the ON state having flow values of burner parameters including flow of atomizing air, flow of combustion air, and fuel flow. The method includes: changing, in response to an OFF instruction, flow of at least one of the flow of atomizing air, combustion air and/or fuel to a lower non-zero value; first discontinuing, after a first period of time since the changing, flow of fuel and flow of atomizing air; maintaining, for a second period of time since the first period of time, flow of combustion air; second discontinuing, after the maintaining, flow of combustion air; wherein the maintaining prevents buildup of excess heat inside the burner during the transition to the OFF state.

A burner (20) includes a combustion unit (21), a fuel supply unit (22), a vaporizer (30), an air supply unit (45), and a control unit (50). The fuel supply unit (22) supplies fuel to the combustion unit (21). The vaporizer (30) uses an electric heater (32) to heat and vaporize fuel supplied from the fuel supply unit (22) to the combustion unit (21). The air supply unit (45) supplies air to the vaporizer (30). The control unit (50) controls the supply of fuel from the fuel supply unit (22), the supply of electrical power to the electric heater (32), and the supply of air from the air supply unit (45). The control unit (50) causes the air supply unit (45) to supply air while the supply of fuel from the fuel supply unit (22) is stopped. The control unit (50) supplies electrical power to the electric heater (32) and controls the temperature of the electric heater (32) so as to reach a combustible temperature at which fuel can combust.