Abstract: An fluid flow rate measuring device preferably includes an airfoil, a differential pressure sensor and a programmable electronic controller. The airfoil includes a leading edge, a first pressure chamber, a second pressure chamber, and a trailing edge. At least one first hole is formed through the first pressure chamber. At least one second hole is formed through the second pressure chamber adjacent the trailing edge. The at least one first hole communicates with the first pressure chamber. The at least one second hole communicates with the second pressure chamber. The first and second pressure chambers are connected to first and second input ports of the differential pressure sensor. The differential pressure sensor outputs a voltage to the programmable electronic controller. The programmable electronic controller takes a square root of the differential pressure and multiplies it by a K factor to produce an fluid flow rate in CFM.

Abstract: Embodiments of the invention provide a venturi valve and control system for use in an indoor environment to regulate air flow. The venturi valve includes a substantially cylindrical pipe, a high pressure sensing assembly, a low pressure sensing assembly, a differential pressure transducer, and a damper assembly. The high pressure sensing assembly and the low pressure sensing assembly do not substantially impede air flow through the valve. A controller is connected to the differential pressure transducer and a damper actuator. The controller determines a current flow rate of air into the indoor environment and operates the damper actuator in order to provide a desired flow rate of air into the indoor environment.

Abstract: A room monitor having a second display includes a controller, a first display and a second display. The first display is preferably a touch screen monitor, which allows the entry of data into the controller without the need for a keyboard. However, the controller may be programmed through a keyboard. The controller includes a plurality of inputs and outputs for monitoring and/or controlling such room environmental factors as pressure, temperature, humidity and lighting. The inputs are used to read sensors. The outputs are used to actuate control devices. The first display includes a plurality of menus for controlling at least one environmental factor. The second display shows information the condition of a critical environment room. There is at least one message displayed on the second display. A second embodiment of the room monitor includes a controller and the first display. The first display must be a touch screen monitor.

Abstract: A room monitor having a second display includes a controller, a first display and a second display. The first display is preferably a touch screen monitor, which allows the entry of data into the controller without the need for a keyboard. However, the controller may be programmed through a keyboard. The controller includes a plurality of inputs and outputs for monitoring and/or controlling such room environmental factors as pressure, temperature, humidity and lighting. The inputs are used to read sensors. The outputs are used to actuate control devices. The first display includes a plurality of menus for controlling at least one environmental factor. The second display shows information the condition of a critical environment room. There is at least one message displayed on the second display. A second embodiment of the room monitor includes a controller and the first display. The first display must be a touch screen monitor.

Abstract: A specialized space control and monitoring system preferably includes a controller, a software program and a touch screen monitor. The software program is run on the controller. The controller may include a plurality of inputs and outputs for directly monitoring and/or controlling at least one parameter in a room. The plurality of inputs read various sensors. The plurality of outputs are used to actuate control devices for changing various functions. However, the controller could be connected to a facility controller. The touch screen monitor provides access to the software program. The software program preferably includes a selection screen, a parameter display screen, a setpoint screen and a room overview screen.

Abstract: Embodiments of the invention provide a venturi valve and control system for use in an indoor environment to regulate air flow. The venturi valve includes a substantially cylindrical pipe, a high pressure sensing assembly, a low pressure sensing assembly, a differential pressure transducer, and a damper assembly. The high pressure sensing assembly and the low pressure sensing assembly do not substantially impede air flow through the valve. A controller is connected to the differential pressure transducer and a damper actuator. The controller determines a current flow rate of air into the indoor environment and operates the damper actuator in order to provide a desired flow rate of air into the indoor environment.