An instrument reprocessor for cleaning, disinfecting, and/or sterilizing a medical instrument is disclosed. To reprocess instruments having one or more channels defined therein, the reprocessor can include one or more flow control systems configured to control a flow of fluid through each channel. In various embodiments, a flow control system can include a differential pressure sensor and a proportional valve for controlling the fluid flow in a channel. The reprocessor can also include, one, a fluid circulation pump which can be configured to supply the flow control systems with fluid and, two, a system for controlling the pressure of the fluid supplied to the flow control systems. The reprocessor can also include a system for supplying a metered amount of fluid to the fluid circulation system. The system can include a reservoir having a fluid height sensor to monitor the amount of fluid therein and a pump configured to supply the reservoir with fluid.

A vacuum unit with at least one vacuum generator, including a working unit with an ejector unit through which compressed air can flow for a vacuum generation and with an electrically actuable vacuum control valve which controls the application of compressed air to the ejector unit, further including a display and control module with a display module for visualizing status information and an operating device for manual input and/or interrogation of operating parameters. The display and control module is located on an upper side of the vacuum generator and is pivotably mounted on the working unit by means of a pivot bearing, so that it can be selectively positioned in a basic position covering the working unit or in at least one pivoted position pivoted upwardly away from the working unit by means of a module pivoting movement which can be executed with respect to a pivot center.

An estimator comprises: an acquisitor to acquire a plurality of data pairs each containing a valve body opening of the vacuum valve and the chamber pressure at the valve body opening; and an operator to operate the gas species characteristic value and the first chamber volume estimation value, based on an exhaust's expression representing a relationship among the second effective exhaust rate, a flow rate of a gas introduced into the vacuum chamber, a chamber volume, and a chamber pressure, the plurality of data pairs acquired in the acquisitor, and correlation data between the valve body opening and the second effective exhaust rate about the predetermined known gas.

A diagnostic device for diagnosing leakage of pressurized fluid from at least one pressure chamber to which a pressurized fluid can be applied. The diagnostic device is configured to diagnose the pressurized fluid leakage on the basis of at least one pressure control actuating signal for controlling a valve arrangement provided for closed-loop pressure control of the pressure chamber.

A controller includes an opening degree control section configured to control a valve element opening degree of the valve main body based on a pressure measurement value of the vacuum chamber measured by a vacuum meter, and an estimation section configured to estimate measurement lag information of pressure measurement value with respect to a pressure of the vacuum chamber based on (a) an exhaust expression including a second-order derivative term of the pressure measurement value and indicating a relationship between an effective exhaust speed of a vacuum pumping system for the vacuum chamber and the pressure measurement value and (b) a pressure measurement value measured during a pressure response when the valve element opening degree is step-changed, and the opening degree control section controls the valve element opening degree based on the measurement lag information estimated by the estimation section.

A computation unit of a residual pressure determination system obtains a corresponding usage limit threshold value corresponding to a measured temperature value of a tank temperature, from a usage limit threshold value line calculated using at least one of a required minimum residual pressure line and an isopycnic line. When having determined that a measured internal pressure value has decreased to the corresponding usage limit threshold value, a determination unit stops release of hydrogen gas from a high pressure tank. A tank internal pressure indicated by the usage limit threshold value line within an allowable temperature range becomes greater than or equal to the tank internal pressure indicated by the isopycnic line or that indicated by a tangent line, and at least a portion of the tank internal pressure indicated by the usage limit threshold value line within the allowable temperature range becomes lower as the tank temperature becomes lower.

The present disclosure describes an apparatus, method, and system of regulating a detector flow of a field flow fractionator. In an embodiment, the apparatus includes (1) a detector flow meter, where the detector flow meter is configured to measure a detector flow from the field flow fractionator, (2) a channel pressure meter, where the channel pressure meter is configured to measure a channel pressure of the field flow fractionator, (3) at least one control valve, where an inlet of the at least one control valve is connected to an outlet of the channel pressure meter, (4) where the detector flow meter is configured to set a channel pressure set point of the channel pressure meter, and (5) where the channel pressure meter is configured to actuate the at least one control valve to maintain a channel pressure of the field flow fractionator at the channel pressure set point.

A valve device including an outlet port, a first valve unit with a first valve element for setting a first throttle opening for influencing a first airflow of pressurised air which is to be output at the outlet port or is to be released via the outlet port, a first throttle control loop for the closed-loop control of the first throttle opening according to a first setpoint, a pressure control loop for the closed-loop pressure control of an outlet pressure present at the outlet port to a pressure setpoint amid the use of a first throttle control loop as a subordinate control loop, wherein on closed-loop pressure control the pressure control loop specifies a first throttle setpoint to the first throttle control loop as the first setpoint, wherein the valve device is further configured to provide a throttle setting function and, within the throttle setting function, to limit the first throttle opening to a first limitation value and/or within the throttle setting function to specify a first direct setpoint which does not come from the closed-loop pressure control, to the first throttle control loop as the first setpoint.

A safety device for hydrodynamic pressure regulating pipe network includes a gate valve, which comprises at least a valve body and a gate. A water inlet of the gate valve is used to be connected to a water inlet pipeline. A hydraulic driving device, which comprises a hydraulic cylinder, is also included. The hydraulic cylinder includes a cylinder body, a piston and a piston rod. The piston rod is connected to the gate. The lower part of the inner cavity of the cylinder body is connected to the water inlet pipeline through a gate opening power pipelines. The upper part of the inner cavity of the cylinder body is connected to a gate closing driving device, which is used to drive the gate and close the gate valve.

Certain embodiments provide a vacuum generation system with an override PID controller, a proportional valve, and a vacuum generator. The override PID controller allows the vacuum generation system to control the operating range of supply air pressure that is provided to the vacuum generator. By controlling the operating range of the supply air pressure, the vacuum generation system is able to avoid entering the decreasing or non-monotonic region of the vacuum generator.