A wave guide assembly for a control and diagnostic system for a machine includes a housing defining an exterior surface and an internal cavity extending between distal ends. At least one wave guide within the internal cavity defines a wave propagation passage for at least one wave form signal. At least one conductor within the internal cavity is separate from the wave guide. A control and diagnostic system for a machine and a gas turbine engine are also disclosed.

An extension device for remotely opening and closing a valve from a user knob is described. The device includes a flexible connector that allows the user knob to be positioned in various places relative the valve. One use for the disclosed device is with a gas grill, wherein the gas tank is placed in a position that is not easily accessible or is difficult for some persons to access. The extension device may be mounted in various positions on or near the grill allowing the user to open and close the gas tank's valve before and after use of the grill.

Method for operating a gas burner appliance (10), the gas burner appliance (10) comprising: a combustion chamber (11), a mixing device (23), a fan (14), a gas safety valve unit (19) assigned to the gas duct (16) having a first gas safety valve (19a) and a second gas safety valve (19b) positioned downstream of the first gas safety valve (19a), a gas flow modulator (18) assigned to the gas duct (16), and an electrical or electronic absolute pressure sensor (21) assigned to the gas duct (16) positioned downstream of the first gas safety valve (19a). The gas burner appliance (10) is operated to compensate for a fluctuating gas inlet pressure of the gas burner appliance by executing the following steps: Measure a first absolute pressure by the absolute pressure sensor (21) when at least the first gas safety valve (19a) of the gas safety valve unit (19) is closed. Measure a second absolute pressure by the absolute pressure sensor (21) when the gas safety valve unit (19) is opened. Determine a pressure difference between the first absolute pressure or a pressure depending on the first absolute pressure and the second absolute pressure or a pressure depending on the second absolute pressure. Operate the gas flow modulator (18) dependent from said pressure difference.

Embodiments of the invention relate to a gas fire pit delivery and pay-station system for providing a gas service on a pay-per-use basis. The system provides a multi pay-station or a single pay-station configuration connected to a main gas supply of pressurized gas whereby a control signal is provided by the pay-station to a plurality of electronically controlled gas valves for disabling or enabling the pressurized gas to flow to one or more fire pit stations.

A gas meter includes a flow rate measuring part configured to measure a flow rate of gas flowing through a flow passage, a shutoff valve configured to shut off the flow passage, a wireless communicator configured to periodically perform wireless communication externally, and a communication interval setting part configured to set a communication interval in the wireless communication. The communication interval setting part is configured to set the communication interval according to the flow rate of gas measured by flow rate measuring part.

One or more techniques and/or systems are disclosed for controlling and managing one or more flame-producing devices, such as fire features, heating devices and/or cooking devices. Control of respective devices may be provided by a first communication component and a first controller component disposed locally on respective devices, in combination with one or more wireless remote control devices. Respective flame-producing devices may be communicatively coupled with a remote control device, allowing for commands to be sent wirelessly to the flame-producing device, and status information to be sent to the remote control device.

An extension device for remotely opening and closing a valve from a user knob is described. The device includes a flexible connector that allows the user knob to be positioned in various places relative the valve. One use for the disclosed device is with a gas grill, wherein the gas tank is placed in a position that is not easily accessible or is difficult for some persons to access. The extension device may be mounted in various positions on or near the grill allowing the user to open and close the gas tank's valve before and after use of the grill.

Techniques for controlling a solid fuel combustion appliance, e.g., a wood burning stove, are disclosed. A control system measures an exhaust gas temperature of airflow through an outlet of the solid fuel combustion appliance. The control system determines a derivative of the exhaust gas temperature with respect to time. The derivative of the exhaust gas temperature with respect to time is compared to a predetermined threshold. The control system modulates the inlet damper in response to determining that the derivative of the exhaust gas temperature with respect to time reaches the predetermined threshold.

A high efficiency laminar flow burner system for proving a stream of heat energy including a supply input module for providing fuel and laminar streams of air to a combustion manifold. The laminar air delivery system includes a damper, a blower, and an air delivery controller. The air delivery controller receives an efficiency signal to control the flow of a laminar air intake stream by adjusting the damper. The combustion manifold includes an air-fuel mixing system, a stoichiometric unit, and a refractory unit each coupled to one another. The laminar air intake stream traveling from the supply input module passes through a stoichiometric unit body to meet with a first combustion stream from an air-fuel mixing chamber within the stoichiometric unit body to define a second combustion stream. The second combustion stream then travels across the refractory passageway to define a third combustion stream.

For the automated adjustment of a heating system (2), there is produced between an exhaust-gas measuring device (1) and a control unit (26) a data connection (6) via which data, measurement values or control or setting signals for the adjustment of the heating system (2) are transmitted at least from the exhaust-gas measuring device (1) to the control unit (26). During the adjustment of the heating system (2), at least one exhaust-gas parameter is measured in automated fashion by way of at least one exhaust-gas sensor (4) of the exhaust-gas measuring device (1), and determined measurement values are automatically detected by the exhaust-gas measuring device (1). Then, a deviation of the determined measurement value from an exhaust-gas-parameter-specific and/or installation-specific setpoint value is determined, and in a manner dependent on the determined deviation, an automated adjustment of the heating system (2) is performed, said adjustment being initiated by the control unit (26) (cf. FIG. 1).