Abstract: Described is a method for manufacturing a diaphragm assembly through the use of injection molding. The method can avoid the use of PTFE as a chemically resistant coating. Further, the method can increase overall adherence of a polymer diaphragm to an insert through the use of an interference surface on at least the surface of a head of the insert.

Abstract: 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.

Abstract: Described is a method for manufacturing a diaphragm assembly through the use of injection molding. The method can avoid the use of PTFE as a chemically resistant coating. Further, the method can increase overall adherence of a polymer diaphragm to an insert through the use of an interference surface on at least the surface of a head of the insert.

Abstract: 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.

Abstract: A rotor assembly for a peristaltic pump is provided. The rotor assembly includes a hub configured to couple with a drive shaft of a pump. The hub includes at least one receiving slot that extends longitudinally along an outer surface of the hub. The rotor assembly further includes a roller assembly configured to slide longitudinally along the receiving slot to seat the roller assembly onto the hub.

Abstract: A peristaltic pump can include a chassis and a chassis retaining portion forming a cavity. The pump can also include a rotor, a cover, and a linkage. The rotor can be disposed within the cavity such that tubing can be held between the rotor and the chassis and/or the chassis retaining portion. The linkage can couple the cover to the chassis. The linkage can include an arm. When opening the cover, the arm can pivot such that the chassis moves away from the chassis retaining portion to widen the cavity. When closing the cover, the arm can pivot such that the chassis moves toward the chassis retaining portion. When closed, a stop can restrict further movement of a corresponding member toward the chassis retaining portion.

Abstract: This application provides methods and systems for rapid load support for grid frequency transient events. Example systems may include a turbine having a first controller, a generator coupled to the turbine, where the generator is configured to provide power to an electrical grid, and an exciter configured to provide a magnetic field in the generator. The exciter may include a second controller configured to monitor a first set of electrical properties associated with the electrical grid, determine that a transient event is present on the electrical grid based on the first set of electrical properties, and send a notification of the transient event to the first controller.

Abstract: This application provides methods and systems for rapid load support for grid frequency transient events. Example systems may include a turbine having a first controller, a generator coupled to the turbine, where the generator is configured to provide power to an electrical grid, and an exciter configured to provide a magnetic field in the generator. The exciter may include a second controller configured to monitor a first set of electrical properties associated with the electrical grid, determine that a transient event is present on the electrical grid based on the first set of electrical properties, and send a notification of the transient event to the first controller.

Abstract: 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.

Abstract: A lockout system for a metering pump is provided. The lockout system can include a user interface that is used to switch the pump between a locked configuration and an unlocked configuration. In the locked configuration, the operation of the pump cannot be adjusted through the user interface. In the unlocked configuration, the operation of the pump can be adjusted through the user interface. The lockout system can include a passkey notice that provides information regarding how to use the user interface to switch the pump between the locked and unlocked configurations.

Abstract: A quick mounting bracket for a pump is provided. The bracket includes a flexible handle that moves relative to stabilizer tabs. The bracket has ramped surfaces that guide a portion of the pump housing into a receiving slot of the bracket. A hinge of the handle biases the handle away from the pump such that the handle is driven to overlap the portion of the pump housing that seats into the receiving slot, thereby locking the pump onto the bracket until the handle is move to clear receiving slot and allow the pump to be removed from the bracket.

Abstract: Described is a method for treating water with sodium hydroxide. The method can increase the accuracy of the volume of a stock sodium hydroxide solution that is delivered to the water being treated. The method can include pumping a concentrated aqueous sodium hydroxide stock solution with a diaphragm pumping system that has a two-part diaphragm assembly with a polymeric diaphragm overmolded onto a rigid insert. The polymeric diaphragm can be made of a fully-vulcanized ethylene propylene diene monomer rubber that is injection molded over the rigid insert.

Abstract: A flow rate assembly can include a housing having a measurement channel extending along the housing axis and through a portion of the housing between the first and second ends of the housing, an outer cup portion positioned at least partly within the housing, and a transducer positioned within the outer cup portion and sealed from fluid flow past the outer cup portion, the transducer having a width perpendicular to the housing axis and greater than the width of the measurement channel, the transducer configured to generate an ultrasonic signal and to direct the ultrasonic signal through the measurement channel.

Abstract: Described is a method for manufacturing a diaphragm assembly through the use of injection molding. The method can avoid the use of PTFE as a chemically resistant coating. Further, the method can increase overall adherence of a polymer diaphragm to an insert through the use of an interference surface on at least the surface of a head of the insert.

Abstract: Described is a method for manufacturing a diaphragm assembly through the use of injection molding. The method can avoid the use of PTFE as a chemically resistant coating. Further, the method can increase overall adherence of a polymer diaphragm to an insert through the use of an interference surface on at least the surface of a head of the insert.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Transducer assemblies and associated methods are provided for facilitating alignment of ultrasonic transducers with respect to pipes onto which the transducers are installed. The transducer assembly can include a transducer housing having a track on along which the transducers can be slidingly engaged. The transducer assembly can include attachment structures having alignment features used to align the transducers parallel to the axial centerline of the pipe while ensuring that the reception/emission sides of the transducers are oriented normal to the outer surface of the pipe. In some embodiments a transducer assembly alignment system can be used to align two transducer assemblies on circumferentially opposite sides of a pipe.