A monitoring assembly includes a diverter, a fluid delivery network, an analysis subsystem, and a pump. The diverter be configured to fluidly couple to a single port of a process pipe. The network can be configured to receive a process fluid including an incumbent additive from the diverter. The analysis subsystem can be configured to receive the process fluid from the network, to measure a predetermined property of the received process fluid within a sensing chamber, and to output a signal representing the measured property. The pump can be configured to urge the process fluid from the analysis subsystem to the diverter via the network. The assembly can also include a conditioning subsystem configured to treat the process fluid with a process additive prior to measurement. The assembly can further include a filtration subsystem configured to filter the process fluid prior to measurement.

A monitoring assembly includes a diverter, a fluid delivery network, an analysis subsystem, and a pump. The diverter be configured to fluidly couple to a single port of a process pipe. The network can be configured to receive a process fluid including an incumbent additive from the diverter. The analysis subsystem can be configured to receive the process fluid from the network, to measure a predetermined property of the received process fluid within a sensing chamber, and to output a signal representing the measured property. The pump can be configured to urge the process fluid from the analysis subsystem to the diverter via the network. The assembly can also include a conditioning subsystem configured to treat the process fluid with a process additive prior to measurement. The assembly can further include a filtration subsystem configured to filter the process fluid prior to measurement.

A device for holding a target gas comprises a compartment configured to hold the target gas. The device further comprises a gas generator configured and arranged to release the target gas in the compartment in response to a control signal. The device further comprises a reference sensor sensitive to the target gas and arranged to supply a sensor signal representing a concentration of the target gas in the compartment. A control unit is provided and configured to control the release of the target gas from the gas generator by way of the control signal, dependent on the sensor signal. The gas generator and the reference sensor are arranged in the compartment.

An inline buffer dilution system is provided that includes a first flow control valve fluidly connected to a supply of diluent liquid, second and third flow control valves fluidly connected to supplies of a first buffer and a second buffer, respectively, and a mixing pump fluidly connected to the first, second, and third flow control valves and configured to mix an amount of the diluent liquid, the first buffer, and the second buffer to produce a diluted buffer solution. The system further includes a backpressure control valve configured to generate a backpressure that promotes mixing within the mixing pump, and a controller configured to control the backpressure based on the amount of the diluent liquid, the first buffer, and the second buffer being mixed in the mixing pump, such that the mixing pump yields a minimum mixing threshold across a range of fluid flows.

The present invention relates to a system and a method for abating the presence of a selected chemical substance in wastewater flowing in a wastewater channel system from an upstream position to a downstream position. The method typically comprising dosing into the wastewater, at the upstream position, chemical agent(s) adapted to abate the presence of said selected chemical substance, wherein the dosing is in an amount set by a dosing set-point, and adjusting the dosing set-point based on determinations of the concentration of the selected chemical substance at the downstream position. The invention involves comparison between a determined concentration and a pre-selected fractile and adjusting a dosing set-point based thereon.

A chemical controller for an aquatic application comprising an output relay. The chemical controller further includes a current detection circuit configured to detect current on an output of the output relay and a current fault detection device configured to output a current fault signal when a current fault condition has occurred. A relay latch of the chemical controller receives the relay enable signal and the current fault signal and decouples the relay enable signal from a corresponding output when a current fault condition has occurred. A relay drive circuit receives a signal from the corresponding output to responsively activate and deactivate the output relay. A watchdog timer circuit causes the output relay to be deactivated in response to detecting a hung processor.

A chemical controller for an aquatic application comprising an output relay. The chemical controller further includes a current detection circuit configured to detect current on an output of the output relay and a current fault detection device configured to output a current fault signal when a current fault condition has occurred. A relay latch of the chemical controller receives the relay enable signal and the current fault signal and decouples the relay enable signal from a corresponding output when a current fault condition has occurred. A relay drive circuit receives a signal from the corresponding output to responsively activate and deactivate the output relay. A watchdog timer circuit causes the output relay to be deactivated in response to detecting a hung processor.

Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment are provided. “Internet-of-Things” (IoT) functionality is provided for pool and spa equipment in a flexible and cost-effective manner. Network connectivity and remote monitoring/control of pool and spa equipment is provided by various components such as a network communication and local control subsystem installed in pool/spa equipment, and other components. Also disclosed are various control processes (“pool logic”) which can be embodied as software code installed in any of the various embodiments of the present disclosure.

Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment are provided. “Internet-of-Things” (IoT) functionality is provided for pool and spa equipment in a flexible and cost-effective manner. Network connectivity and remote monitoring/control of pool and spa equipment is provided by various components such as a network communication and local control subsystem installed in pool/spa equipment, and other components. Also disclosed are various control processes (“pool logic”) which can be embodied as software code installed in any of the various embodiments of the present disclosure.

Methods, systems, and devices for freeze point suppression cycle control are provided in accordance with various embodiments. For example, some embodiments include a method of freeze point suppression cycle control. The method may include flowing a liquid to a first sensor; the liquid may include a mixture of a melted solid and a freeze point suppressant. The method may include determining an indicator value of a freeze point suppressant property of the liquid utilizing the first sensor. The method may include controlling a flow of the liquid to a separator utilizing a flow controller based on at least the determined indicator value of the freeze point suppressant property of the liquid; the separator may form a concentrated freeze point suppressant from the liquid. Freeze point suppression cycle control systems are also provided.