A method for monitoring the functioning of a compressor, which is switchable into a delivery mode and, when in the delivery mode, delivers compressed air via a dryer line of a compressed-air preparation unit into at least one main supply line, from which multiple supply lines of compressed-air consumer circuits branch off, wherein a pressure sensor is connected at each of at least some of the supply lines, is disclosed. The method results in outputting a warning message if a weighted pressure gradient grd_p.sub.V _W has not exceeded a gradient limiting value grd_p.sub.G_W within a predefined monitoring time period T.sub.M.

A pressure regulating device cooperates with a semiconductor production system to regulate a pressure in a pipe of a semiconductor production apparatus in the semiconductor production system. The pressure regulating device reduces the pressure in the pipe of the semiconductor apparatus by a suction pump to prevent from liquid leakage when the pipe is broken. In addition, the pressure regulating device can periodically record the pressure change in the pipe to facilitate an operator to judge whether the pipe is damaged and analyze the cause of decrease in production yield.

A flow system includes a pump, a motor connected to the pump that drives the pump and draws electrical energy and a sensor that measures the electrical energy drawn by the motor. The system also includes a control module for the flow system. The control module configured to perform a control module method that includes: receiving electrical data from the sensor; receiving operating characteristic data of the pump from one or more pump sensors; comparing the changes in the electrical data over time to the operating characteristic data; and determining a health of the pump on the comparison of changes in the electrical data over time to operating characteristic data.

The oil quality in an oil reservoir of a pump is monitored using the disclosed oil-monitoring sensor. The oil-monitoring sensor includes a first capacitive portion for measuring oil level and a second capacitive portion for measuring dielectric constant of the oil. Changes in dielectric constant of the oil are indicative of degradation of the quality of the oil (e.g., due to contaminants, oxidation, etc.) So oil-monitoring sensor is used to indicate various parameters about the oil quality to an operator. Using the disclosed sensors, the quality of the lubricant and/or cooling oil used by the pump may be monitored without needing to be present at the pump, or without needing to access the interior of the pump (or oil reservoir).

A dynamic compressor control is provided. The dynamic compressor control includes sensors to sense operating parameters of a compressor and a compressor analytic software package. The compressor analytic software package uses the sensed operating parameters of the compressor to generate key performance indicators. The key performance indicators are used to calculate process variables for the compressor. The dynamic compressor control uses the sensed operating parameters and the process variables calculated from the key performance indicators to provide operating alarms and/or shutdowns.

A pump monitoring system includes a pump with a pump body and a releasable head. An RFID transponder is secured to the pump head and an RFID reader in communication with a processor is provided in the pump body. The transponder receives and stores information relating to operation of the pump head. The reader reads information from the transponder and transmits further information to the transponder. The processor interprets the information from the transponder and controls operation of the pump in response.

An enteral feeding pump is provided for mounting a tubing set. The enteral feeding pump comprises a base having an outer side. A rotor is supported on the outer side of the base for engaging a tube section of a tubing set. A tubing set platform is provided on the outer side of the base and defines a pair of tube retainer locks. At least one tube retainer lock comprises an elongated channel for receiving a tube retainer defined by a retainer body and a pair of laterally opposing retainer tabs, tab rest surfaces located on laterally opposing sides of the channel, and tab retention surfaces spaced from the tab rest surfaces and defining elongated slots extending in a longitudinal direction parallel to the elongated channel. The elongated slots each include an entrance end for receiving a retainer tab and a longitudinally opposing inner end.

An air compressor includes: a motor; a compression mechanism that is driven by the motor and that is configured to generate compressed air; a tank that is configured to store the generated compressed air; a load acquisition part that is configured to acquire a load applied to the compression mechanism; and a control part that is configured to control a rotation of the motor. The control part is configured to perform control for changing a TN characteristic of the motor in response to the load of the compression mechanism acquired by the load acquisition part.

An exemplary apparatus includes a switch, an arm, and a rod. The switch is housed by a housing and includes an actuating tab. The arm is housed by the housing and carries an arm magnet. The arm magnet includes first and second opposed surfaces and an edge surface. The rod carries a float and a rod magnet. The rod is movable between a first rod position and a second rod position at which the rod magnet is in the housing. As the rod moves from the first position to the second position, the edge surface of the arm magnet is configured to move across a facing surface of the rod magnet, thereby moving the arm from a first arm position in which the arm does not actuate the actuating tab to a second arm position in which the arm actuates the actuating tab.

A liquid leak detector for a pump is described. The liquid leak detector is mountable on a pump to detect leaked fluid coming from the pump. The leak detector includes a buffer tube positioned on the pump to collect a leaked fluid from the pump and a sensor positioned on the buffer tube to detect the level of leaked fluid in the buffer tube and to generate a signal when the leaked fluid reaches a maximum fluid level. A purge line on the buffer tube removes leaked drive fluid from the buffer tube once the leaked drive fluid reaches a maximum level. Logic connected to the sensor receives the signal from the detector and generates an alarm.