A flow rate assembly can include a fluid flow interface portion having a front facing wall and a back facing wall. The flow interface portion can include an inlet passage within the fluid flow interface portion, an outlet passage within the fluid flow interface portion, at least one inlet aperture extending through the front facing wall of the fluid flow interface portion into the inlet passage, and at least one outlet aperture extending through the back facing wall of the fluid flow interface portion into the outlet passage. In some cases, the fluid flow interface portion includes a plug forming at least a portion of the inlet passage.

The present disclosure includes a method of producing a protective tube for insertion into a pipe or vessel containing a medium, the protective tube including a tubular member having a bore extending between an upper and lower of the tubular member, wherein the method includes the steps of providing a preformed element comprising a coiled wire with at least one turn, arranging the preformed element around an outer surface of the tubular member, and welding the preformed element on an outer surface of the tubular member.

An intelligent self-balancing downstream device (e.g., air fixture or diffuser) that can obtain accurate flow measurements that can be used to perform the self-balancing in situ and during operation to satisfy a set point and without k factors or the use of TAB balancers. The downstream device may be controllable by a single software system or network accessible locally on site or remotely off site. The downstream device can operate in a single zone or be coupled with multiple like apparatuses for multi-zone operation. It is a high turndown ratio and self-balances, which can allow for continuous commissioning with built-in fault diagnostic systems and that may be used as a supply, return, or exhaust system, or a combination thereof. The downstream device can include multi-stage airflow control systems that operate progressively based on unique actuation mechanisms and/or algorithms that allow for precise flow control and feedback to self-balance and commission the system.

A testing device for backflow prevention devices, the testing device comprising a first connection portion adapted for connection to one of a high pressure side or a low pressure side of a backflow prevention device, a second connection portion adapted for connection to the other of the high pressure side or the low pressure side of the backflow pressure device, and an electronic differential pressure gauge positioned in fluid communication with the first connection portion and the second connection portion and adapted to measure the differential pressure between the high pressure side and the low pressure side of the backflow prevention device.

A system for controlling a flow rate of a fluid through a valve is provided. The system includes a valve and an actuator. An actuator drive device is driven by an actuator motor and is coupled to the valve for driving the valve between multiple positions. The system further includes a differential pressure sensor configured to measure a differential pressure across the valve and a controller that is communicably coupled with the differential pressure sensor and the motor. The controller is configured to receive a flow rate setpoint and the differential pressure measurement, determine an estimated flow rate based on the differential pressure measurement, determine an actuator position setpoint using the flow rate setpoint and the estimated flow rate, and operate the motor to drive the drive device to the actuator position setpoint.

An air data probe includes a faceplate, a body connected to the faceplate, and a heating system comprising a coil, the coil being connected to the faceplate. The coil generates an electromagnetic field that couples with the body to heat the body.

A protective tube for insertion into a pipe or vessel containing a medium, a measuring apparatus having such protective tube and a method for manufacturing the protective tube are disclosed, the protective tube including a tubular member having a bore extending between an upper and lower end of the tubular member and having at least one helical fin on at least a section of an outer surface of the tubular member, winding around the outer surface of the tubular member and defining a flow channel along at least a part of the tubular member. At least one geometric parameter of the at least one helical fin is configured based on at least one process condition of the medium in the vessel or pipe.

A self-balancing system that can obtain accurate flow measurements that can be used to perform the self-balancing in situ and during operation to satisfy a set point and without k factors or the use of TAB balancers. The building automation system may be controllable by a single software system or network accessible locally on site or remotely off site. The air distribution apparatus can operate in a single zone or coupled with multiple like apparatuses for multi-zone operation. It is a high turndown, self-balancing system which allows for continuous commissioning with built-in fault diagnostic systems and that may be used as a supply, return, or exhaust system, or a combination thereof. The air distribution apparatus can include multi-stage airflow control systems that operate progressively based on unique actuation mechanisms and/or algorithms that allow for precise flow control and feedback to self-balance and commission the system.

An air data probe includes an air data probe body and an additively manufactured heater on the air data probe body, the heater including a first heater layer and a first dielectric layer on the first heater layer. The first dielectric layer makes up an exterior surface of the heater.

A probe head for an air data probe includes a ceramic body and a heater embedded within the ceramic body.