The objective of the present invention is to provide a combustion device capable of informing an amount of used gas, in which an air of gas temperature is reflected, to a user and a method of measuring the amount of used gas. To this end, the combustion device includes: a burner configured to burn gas; a blower configured to supply air for combustion to the burner;

gas valves configured to supply gas for combustion to the burner; a gas temperature sensor configured to measure a temperature of gas supplied to the burner or the blower; and a control unit configured to control the number of revolutions of the blower, calculate a first amount of used gas for a present operating heat quantity burned according to a signal input by a user, and compensate the calculated first amount of used gas with a measured gas temperature measured by the gas temperature sensor to calculate a second amount of used gas.

Electrical heater systems including one or multiple electrical heaters and a stack for combusting materials leaked into and vented from the electrical heaters. Configurations may include fluid conduits, pressure doors and other equipment for controlling a flow of leaked process fluid between the heater enclosure and the stack. Configurations may also include a purge gas distribution system for purging heater enclosures and preventing thermal shock of electrical heating elements.

Electrical heater systems including one or multiple electrical heaters and a stack for combusting materials leaked into and vented from the electrical heaters. Configurations may include fluid conduits, pressure doors and other equipment for controlling a flow of leaked process fluid between the heater enclosure and the stack. Configurations may also include a purge gas distribution system for purging heater enclosures and preventing thermal shock of electrical heating elements.

A damper regulator for controlling the opening/closing characteristics of an HVAC damper has a swing arm coupled to the shaft on which the damper pivots. The swing arm has an arm carriage mounted to translate on the swing arm as the swing arm pivots, and a biasing spring connects the arm carriage to the damper regulator's housing, or to another suitable anchor. The translation of the arm carriage effectively adapts the characteristics of the biasing spring so that the damper need not be subjected to ever-increasing pressure to achieve greater airflow, or so that other damper opening characteristics can be achieved.

A damper regulator for controlling the opening/closing characteristics of an HVAC damper has a swing arm coupled to the shaft on which the damper pivots. The swing arm has an arm carriage mounted to translate on the swing arm as the swing arm pivots, and a biasing spring connects the arm carriage to the damper regulator's housing, or to another suitable anchor. The translation of the arm carriage effectively adapts the characteristics of the biasing spring so that the damper need not be subjected to ever-increasing pressure to achieve greater airflow, or so that other damper opening characteristics can be achieved.

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.