Abstract: A system and method for monitoring and/or detecting the flow of one or more fluids in a fluid system including leak detection system integral to the fluid system (e.g., at any point along a conduit, at a connection between conduits such as at a fitting assembly, etc.) configured to detect incipient, early stage levels of the leak. Based on one or more factors related to the fluid and/or the leak, the methods, devices, and systems disclosed herein can provide an indication of a suitable action or process in response to the fluid or the leak including performing preventative maintenance or providing an indication of the need of maintenance in response to the leak.

Abstract: A drip tray alarm and container caddy system comprising a receptacle having an inner volume, a top side with a center and a perimeter lip, a bottom side and a plurality of side walls. The receptacle comprises an inner volume for containing leaked fluid. The top side of the drip tray alarm and container caddy system comprises a plurality of evenly-spaced downwardly-sloping drainage channels for receiving and directing at least one leaked fluid, a center-opening connecting the plurality of evenly-spaced downwardly-sloping drainage channels, and a detection and indicator device for detecting and indicating the presence of leaked fluid when the leaked fluid in the inner volume reaches a predetermined level. The top side further provides a storage surface for resting at least one container.

Abstract: A protective circuitry (20) is connected between a power input port (11) and an electronic component (12) of an electronic device. The protective circuitry includes a field effect transistor (21) and a detection unit (25). The field effect transistor has a gate and a drain both electrically connected to an anode of the power input port, and a source electrically connected to a cathode of the power input port via the electronic component. The detection unit has two conductive pads spaced to each other. One pad is electrically connected to the gate and the other pad is electrically connected to the cathode of the power input port.

Abstract: The present invention relates to a wetness detector system that rapidly detects the presence of wetness due to a liquid leak in a system. The wetness detector system contains a reusable wetness sensor that is able to accurately detect the presence of wetness and, in the case of an extracorporeal blood treatment, the presence of blood. The wetness detector system can quickly alert both a user and medical personnel that a liquid leak has been detected in a treatment system and, if necessary, halt the removal of liquids and/or blood from the patient. If a liquid leak is not detected for a period of time, the wetness sensor can enter a low power state, extending the life of the device. The wetness detector system can monitor a number of wetness sensors simultaneously, which would, for example, eliminate the need for medical personnel to continuously inspect numerous patients visually for potentially fatal blood leaks due to needle dislodgement during an extracorporeal blood treatment.

Abstract: A water leakage monitoring and response system for residential and commercial use. A flexible, elongated moisture sensor strip for placement on a floor or adjacent a baseboard or plumbing fixture comprises flexible upper and lower wires separated by a water permeable, nonconductive layer, and nonconductive upper and lower layers that extend away from the wires to form margins for attaching the strip to a surface and for wicking moisture toward the wires. Alternatively, the wires are laterally spaced-apart within the strip and/or the strip assumes the form of a pad to cover a surface area. In use, a plurality of strips/pads are wired to input jacks of a battery-powered electronic interface unit that provides audible and visual signals when moisture shorts the wires in the strips/pads. The unit also provides audible warning of low-battery power and can signal a home security system when a leak is detected.

Abstract: A remote sensing device includes a plurality of components arranged to form a resonant electrical circuit. The plurality of components includes at least one sensing component having sensing elements distributed among regions of an area of interest. The sensing elements are arranged so that a resonant characteristic of the resonant circuit is modifiable by an external event affecting an element associated with a region. The sensing component may be a capacitor having spatially distributed capacitive elements or an inductor having spatially distributed inductive elements.

Abstract: A leak detector apparatus and system for use with a drop ceiling having a grid-work of ceiling tiles. The leak detector apparatus includes an electrically non-conducting tile body that is shaped and dimensioned to rest on top of a ceiling tile. The tile body comprises multiple layers of non-conducting closed cell-foam and has a plurality of water collector cups formed or positioned therein. Spaced-apart sensor wires are provided and form an electrical grid that extends between the multiple layers of the tile body and the sensor wires generally extend through the water collector cups. The sensor wires are operative to sense the presence of water in the cups. An electronics module is provided at each tile body and is associated with the sensor wires and electrically coupled to the sensor wires for triggering an alert in response to the presence of water in one or more of the cups. A master controller is in communication with the local processors for monitoring the function and operation of each local processor.

Abstract: An apparatus and method of sensing leakage of chemical liquid is provided. The apparatus for sensing leakage of chemical liquid, includes a sensing unit measuring a flow rate of chemical liquid being supplied to a process chamber, a process control unit judging whether leakage of the chemical liquid has occurred using the measured flow rate of the chemical liquid and generating a control signal, and an equipment control unit receiving an input of the control signal and controlling an operation of equipment.

Abstract: A system and method are described for detecting toxic gas releases in an urban environment. The system includes a series of repositionable remote sensor nodes that are located in an environment containing a toxic gas, the sensor nodes including a chemical sensor and/or a meteorological sensor. The sensor nodes gather data relating to the type of gas released and the surrounding atmospheric conditions and relay the information back to a data processing hub where the data is collated and analysed to produce an indication of the likely spread of the gas plume, the likely danger to the surrounding population and an indication of the release point of the gas.

Abstract: A leak detection system is described for detecting a leak through a closed valve disposed between an upstream pipe and a downstream pipe of an industrial process. An insertable plate is coupled to the valve in the pipe in-line with the fluid flow. A sensor couples to the flow and provides a signature output. A leak detector is coupled to the sensor and adapted to detect a leak through the valve based upon the signature output.

Abstract: A system for detecting a reduction in engine coolant flow rate is provided. The system includes a device configured to monitor at least one parameter associated with an engine, and a device configured to measure actual engine air intake manifold temperature. The system further includes a controller configured to determine a theoretical engine air intake manifold temperature based on the at least one monitored parameter, compare the theoretical engine air intake manifold temperature with the actual measured engine air intake manifold temperature, and generate a signal indicative of engine coolant flow rate.

Abstract: The present invention generally provides methods and systems for managing a medical gas system by using wireless sensors located at the point of use. In one embodiment, a wireless sensor is fixed to a gas outlet, and is configured to measure gas flow, and to detect whether the gas outlet is connected to a medical device. The gas flow and connection data is included in a wireless signal that is transmitted to a remote server. The data received by the server may be analyzed to determine if any local or system leaks are occurring. In addition, the data may be used to monitor patient therapies, to calculate costs, and to determine replenishment points.

Abstract: A valve assembly for use in detecting leaks is provided. The valve assembly includes a valve, a power source coupled to the valve, and a sensor coupled to the power source. The sensor is configured to close the valve when exposed to a predetermined amount of fluid.

Abstract: A computerized method for monitoring a water utility network, the water utility network comprising a network of pipes for delivering water to consumers and a plurality of meters positioned within the pipes across the water distribution network. The method includes receiving meter data representing parameters measured by the meters, such as flow, pressure, chlorine level, pH and turbidity of the water being distributed through the pipes. The method also includes receiving secondary data from sources external to the meters and representing conditions affecting consumption of water in a region serviced by the water utility network such as weather and holidays. The meter and secondary data is analyzed using statistical techniques to identify water network events including leakage events and other events regarding quantity and quality of water flowing through the pipes and operation of the water network. The events are reported to users via a user interface.

Abstract: The present invention generally provides methods and systems for managing a medical gas system by using wireless sensors located at the point of use. In one embodiment, a wireless sensor is fixed to a gas outlet, and is configured to measure gas flow, and to detect whether the gas outlet is connected to a medical device. The gas flow and connection data is included in a wireless signal that is transmitted to a remote server. The data received by the server may be analyzed to determine if any local or system leaks are occurring. In addition, the data may be used to monitor patient therapies, to calculate costs, and to determine replenishment points.

Abstract: A system and method are described for detecting toxic gas releases in an urban environment. The system includes a series of repositionable remote sensor nodes that are located in an environment containing a toxic gas, the sensor nodes including a chemical sensor and/or a meteorological sensor. The sensor nodes gather data relating to the type of gas released and the surrounding atmospheric conditions and relay the information back to a data processing hub where the data is collated and analysed to produce an indication of the likely spread of the gas plume, the likely danger to the surrounding population and an indication of the release point of the gas.

Abstract: A system and method for testing and replacing equipment are disclosed. The system may include a first memory module configured to store first characteristics of the first equipment; a second memory module configured to store second characteristics of the second equipment; and a portable reader configured to read the first and second memory modules and to compare the second characteristics with the first characteristics to determine if the second equipment is a suitable replacement for the first equipment. The method may include storing first characteristics of a first equipment on a first memory module; transmitting the first characteristics to a portable reader; measuring second characteristics of a second equipment using a measuring device associated with the portable reader; and comparing, with the portable reader, the second characteristics with the first characteristics to determine if one of the first and second equipment is a suitable replacement for the other equipment.

Abstract: A sensor leak monitor device that consists of well known elements arranged in a novel manner such that it can detect an involuntary consumption and alert a person when such is occurring. A pressure gage coupled with a timing device measures in a constant manner the internal pressure of a pipe and establishes a reference pressure. Upon the opening of any outlet of the network, the measured pressure will fall below this reference pressure value. If the measured pressure does not return to the reference pressure value within a stipulated time, it would be safe to assume that involuntary consumption is happening. Temperature is monitored and reported whenever it reaches a very low or freezing level. The device provides for audio and visual alerts to bring about the correction of the involuntary situation.

Abstract: A multiple-link leak detector apparatus to be used on a floor or other substantially flat surface and in conjunction with an appliance, plumbing fixture or other potential water leak source. The leak detector apparatus includes a multiple-link sensor having two or more bodies linked together, each link body having at least two spaced apart sensor elements, and an electronics module associated with the sensor elements. The multiple-link sensor is shaped and dimensioned to rest atop the floor and can be positioned beside or around an appliance, plumbing fixture or other potential water leak source. The sensor elements extend longitudinally along the link body, wherein the sensor elements are operative to sense the presence of water on the floor. Finally, the electronics module is coupled to the sensor elements to trigger an alert in response to the presence of water on the floor.

Abstract: A system and method for analyzing smoke or other emissions are provided. An image is analyzed and processed to identify characteristics associated with the emission, such as color, densities, dispersion rates, fuel mixture characteristics, and other suitable analysis factors. If the analysis indicates that abnormal conditions exist or that any user-defined alerts are warranted, a message is sent to an operator terminal. The system and method may continue to capture subsequent images and thus provide real-time data. The data may be stored in memory and collected over time. The data may be associated with a digital signature and used to create reports for company quality control boards, regulatory control agencies, and the public. The system and method thus provide a cost effective, reliable, and repeatable mechanism for real-time analysis of smoke stacks and other environmental changes.

Abstract: A multi-stage process utilizing one or more radiation sensors on a distributed network for the detection and identification of radiation, explosives, and special materials within a shipping container. The sensors are configured as nodes on the network. The system collects radiation data from one or more nodes. The collected radiation data is dynamically adjusted according to at least one of a plurality of background radiation data based on a determined background environment about the container. The collected and adjusted radiation data is compared to one or more stored spectral images representing one or more isotopes to identify one or more isotopes present. The identified one or more isotopes present are corresponded to possible materials or goods that they represent.

Abstract: The present invention relates to detection and alarm systems for predicting and detecting the location of spills, leaks, emissions, and/or pollution sources, i.e., unwanted fluid (liquid/gas) flow/escape, at refineries, e.g., oil and gas refineries, and plants, e.g., petrochemical, chemical, pharmaceutical, and food processing plants, and avoiding said unwanted flow/escape. According to one embodiment, said system comprises at least one detector, at least one battery powered radio frequency transmitter, preferably, according to one embodiment, a 900 megahertz spread spectrum transmitter, and a central processing location which, according to one embodiment, is preferably capable of handling up to 3000 points in a single cell site.

Abstract: An automated lost load response system for work machines is disclosed. The response system has a container supported by the machine to retain material. It also has a sensor situated to detect material lost from the container. The sensor generates a signal corresponding to detection of material lost. Additionally, the response system has a controller that is in communication with the sensor. The controller is configured to provide a load loss warning based on the signal generated by the sensor.

Abstract: A domestic water leak and humidity detection and control apparatus to monitor and detect water leaks and to alert a user by an aural buzzer and by illuminated green, red, or yellow LEDs of an operative state of the apparatus incorporates one or more sensor sets, each sensor set having one or more leak detectors connected to a central controller; the central controller having for each sensor set a respective comparator set and a respective LED set, and the central controller connected to and controlling the aural buzzer and controlling a water valve to control water leaks originating from a domestic water supply by electrically controlling the water valve.

Abstract: A leak detector pad comprising a circuit board having a bottom surface and a top surface, spaced first and second electrically conductive traces located on the bottom surface, and an electronic circuit mounted on the top surface. The circuit includes a first segment adapted to create an alternating current (AC) voltage waveform, a second segment adapted to apply the AC voltage waveform between the traces on the bottom surface of the circuit board, a third segment adapted to create a measure of a capacitance between the traces based upon an AC current flowing between the traces as a result of the AC voltage waveform, and a fourth segment adapted to create a direct current (DC) voltage alarm signal if the measure of capacitance provided by the third segment indicates the presence of fluid.

Abstract: An emergency display panel includes a housing having a first surface mountable to a building structure. The housing includes a cavity defined therein and the housing includes circuitry adapted to connect to a remote networking source. A display surface extends from the housing and displays indicia thereon. At least one emergency detector such as a smoke detector, a carbon monoxide detector and gas detector is disposed within the housing.

Abstract: Exemplary systems and methods for interaction with water usage information are provided. In various embodiments, a method comprises receiving water usage data from a meter device, receiving an identifier from a user associated with the meter device, providing an interactive interface to the user, the interactive interface conveying at least some water usage information based on the water usage data, receiving a first characterization of a first water activity from the user, generating a visualization based on the water usage information and the first characterization of the first water activity, and displaying the visualization.

Abstract: A device for detecting leaks of fluids includes means for metering flow of a fluid towards a premises, shut-off means for the fluid, operable between a delivery configuration of the fluid and a closed configuration to allow/prevent its transit towards the premises, and a management and control unit, able to act in conjunction with the metering means of the flow and to send a signal to the shut-off means to switch from the delivery to the closed configuration. The management and control unit comprises enabling means, able to allow or prevent the signal to be sent to the shut-off means. The device comprises, in addition, means for detecting the presence of a user in the premises, operatively connected to the enabling means in such a way that these allow the signal to be sent to the switch if the presence detector means detect the absence of the user in the premises.

Abstract: The present invention provides an apparatus and method for removably attaching one or more electronic components to an article of clothing. Opposing magnets and attachment members for the magnets are placed on opposite sides of clothing.

Abstract: Methods provide an alert to the release of mercury. A sealed container containing an odor-producing agent is provided proximate to a sealed breakable enclosure containing mercury, the container and/or the breakable enclosure physically separating the agent from the mercury. In response to a breaking of the breakable enclosure, the agent produces an odor as a function of the breaking, the odor providing an alert to a release of the mercury. Service methods are also provided, for example wherein a service provider provides the sealed breakable enclosure containing mercury and deploys the odor-producing agent. Articles of manufacture, systems, articles and programmable devices are also provided.

Abstract: A device for detecting a collision of a vehicle with an obstacle includes an enclosed space positioned behind a front bumper cover. Deformation or displacement of the bumper cover due to a collision is transmitted to the enclosed space. Air pressure in the enclosed space and its temperature are measured by sensors and electrical signals representing the pressure and the temperature are fed to an electronic control unit that determines whether the enclosed space is hermetically closed or not based on the pressure and the temperature of the air in the enclosed space. If the enclosed space becomes non-hermetical due to a collision impact, the air therein leaks and the pressure therein becomes atmospheric pressure irrespective of the temperature of the air in the enclosed space. Therefore, the hermetical condition of the enclosed space is surely detected.

Abstract: A magnetic fluid rotary feedthrough has a multi-stage magnetic fluid rotary seal adapted to provide a magnetic fluid seal about a shaft for extending between a first environment and a second environment, one or more sensors integrally mounted within the magnetic fluid rotary feedthrough to sense one or more physical parameters of the multi-stage magnetic fluid rotary seal, signal processing electronics mounted to or incorporated in the magnetic fluid rotary feedthrough to receive one or more sensor output signals from the one or more sensors, to process the one or more sensor output signals and to output one or more electronic processing signals, and one or more output devices operatively connected to receive the one or more electronic processing signals from the signal processing electronics to indicate the condition of the multi-stage magnetic fluid rotary seal.

Abstract: A leak detector sequentially emits pulse signals toward a human body at a position at which a needle is inserted, detects pulse signals reflected inside of the human body, and measures a time interval between the emission and the detection for each of the pulse signals. The leak detector then calculates the difference between the measured interval and a predetermined time interval, and generates a leak warning for notification when the difference exceeds an acceptable range. Since a swelling on the surface of the human body causes a path of the pulse signal to extend, the leak detector can detect, based on the extended signal path, that the needle has come off a blood vessel.

Abstract: A low cost, robust, wireless sensor system that provides an extended period of operability without maintenance is described. The system includes one or more intelligent sensor units and a base unit that can communicate with a large number of sensors. When one or more of the sensors detects an anomalous condition (e.g., smoke, fire, water, etc.) the sensor communicates with the base unit and provides data regarding the anomalous condition. The base unit can contact a supervisor or other responsible person by a plurality of techniques, such as, telephone, pager, cellular telephone, Internet, etc. In one embodiment, one or more wireless repeaters are used between the sensors and the base unit to extend the range of the system and to allow the base unit to communicate with a larger number of sensors.

Abstract: A water detection and alarm system to monitor household plumbing fixtures for leaks. A wick attached to a water activated battery cell connects to a charge accumulator, pulse timer, and audio transducer. The wick draws water from the leak and transports it into the battery cell. A sponge inside the cell absorbs the water and expands, chemically activating the cell, and subsequently providing the electrical energy for the charge accumulator and timer. The timer utilizes the energy stored in the charge accumulator to generate a pulse that drives an audio transducer. No conventional battery is used or required; thus periodic battery replacement is not necessary nor is there a need for a battery monitoring circuit to test for battery depletion.

Abstract: A multi-stage process utilizing one or more radiation sensors on a distributed network for the detection and identification of radiation, explosives, and special materials within a shipping container. The sensors are configured as nodes on the network. The system collects radiation data from one or more nodes and compares the collected data to one or more stored spectral images representing one or more isotopes to identify one or more isotopes present. The identified one or more isotopes present are corresponded to possible materials or goods that they represent. The possible materials or goods are compared with the manifest relating to the container to confirm the identity of materials or goods contained in the container or to detect and/or identify unauthorized materials or goods in the container. For shielded materials, explosives and other types of material detection, a neutron pulse device could be incorporated into the system.

Abstract: Here is disclosed a urine receiver. The urine receiver comprises a container member adapted to suck urine discharged from a wearer of the urine receiver and a urine sensor provided with a pair of electrodes interposed between the container member and the wearer's skin and serving to detect the urine. The paired electrodes covered with insulating coating. The coating is formed with through-holes adapted to expose a limited area of the electrodes.

Abstract: A leak detector pad comprising a circuit board having a bottom surface and a top surface, spaced first and second electrically conductive traces located on the bottom surface, and an electronic circuit mounted on the top surface. The circuit includes a first segment adapted to create an alternating current (AC) voltage waveform, a second segment adapted to apply the AC voltage waveform between the traces on the bottom surface of the circuit board, a third segment adapted to create a measure of a capacitance between the traces based upon an AC current flowing between the traces as a result of the AC voltage waveform, and a fourth segment adapted to create a direct current (DC) voltage alarm signal if the measure of capacitance provided by the third segment indicates the presence of fluid.

Abstract: A device and method for detecting the presence of one or more targeted liquids in volume of space where the targeted liquid is not normally present. The device includes a sensor that can differentiate between the target fluid and a non-target fluid.

Abstract: A system for verifying fuel cap engagement utilizes a transducer coupled to a purge line of a fuel vapor recovery system to generate an electrical signal corresponding to one of the vapor pressure and the vapor flow rate in the purge line. A monitor receives the electrical signal and estimates the vapor pressure when the electrical signal corresponds to the vapor flow rate. The monitor likewise estimates the vapor flow rate when the electrical signal corresponds to the vapor pressure. The monitor also correlates the electrical signal and the estimate to generate a dataset relating vapor pressures to corresponding vapor flow rates at predetermined time intervals, computes a linear approximation of pressure versus flow rate, and computes a curve approximation of pressure versus flow rate. An indicator is actuated by the monitor when the difference between the computed linear and curve approximations is less than a predetermined threshold value.

Abstract: A fluid-level sensing device that uses the interaction of a first magnet attached to the distal end of an external micro switch arm and a second magnet positioned within the distal end of a pivoting float body to close a circuit within the micro switch and create a shut-off signal to stop fluid production. A single housing holds the micro switch and float body, wherein magnetic forces acting through the housing wall between them and other magnet-positioning materials that separate the two magnets cause signal production. After float body deployment, manual reset of the float body is accomplished via its lever-like distal end. The main body of the micro switch, which it is snap-fit into a fixed position within the upper housing chamber for use, is entirely encapsulated in waterproof material to protect it from corrosion. Alternative ways for quick mounting of the housing to a fluid-collecting pan are contemplated.

Abstract: A fluid leak detection system includes a reservoir, a predetermined quantity of a disinfecting liquid contained within such a reservoir, and at least a pair of elongated conduits. A mechanism for automatically opening the distal end of the at least one conduit includes a leaking fluid absorbent member disposed along the distal end of each of the conduits. The fluid-dissolvable member is dissolved by the leaking fluid and absorbed by the member to permit the conduit to be unfolded and allow the disinfecting liquid to flow outwardly from the distal end of the at least one conduit. The system further includes a support frame attached to a support surface, an interface, a communications device electrically coupled to a switch, a monitoring station, and a communications link connecting the communications device to the monitoring station.

Abstract: An integrated leak detection system for a rotating union provides improved leak detection and user convenience. In an embodiment of the invention, the system provides a leak detection sensor located within the union, and in an embodiment of the invention the detection sensor is located beyond a back-up seal system. In an embodiment of the invention, the sensor and processing electronics are integral to the union housing. In yet another embodiment of the invention, the detection sensor is substantially symmetrically configured to detect leakage into a protected area regardless of orientation of the union. In an embodiment of the invention, the fluid being conveyed is electrically conductive and the detection sensor comprises an electrical conductivity sensor.

Abstract: A moisture detection sensor is used in a building structure to detect moisture penetration. The sensor is a flat adhesive tape of a substrate of dielectric, hydrophobic material. Three or four elongate, parallel, conductors are secured to the top surface and a protective layer of non-hygroscopic, water pervious material is secured over two of the conductors so that they are exposed to surface moisture. One or two of the conductors are covered by an insulating layer to prevent moisture access. Pairs of moisture probes along the length of the tape penetrate the insulating layer, the respective conductors and the substrate and to extend into a building component to which the substrate has been adhered. A diode guide arrangement allows a monitoring unit to monitor the exposed conductors for surface moisture and the penetrated conductors for moisture in the component by reversing polarity of the voltage across the conductors.

Abstract: The present disclosure includes systems, apparatus, and methods for monitoring a pipeline network having plural inspection sites. The system comprises a memory module associated with one or more inspection sites, with each memory module storing one or more performance parameters corresponding to the associated inspection site. The system also comprises a measuring device operable to collect performance data of each associated inspection site. The system further comprises a portable reader configured to read the memory module, and in association with the measuring device, to compare the one or more performance parameters with the performance data to validate the performance data while in proximity to the associated inspection site.

Abstract: Embodiments of the inventive technology may provide a leaked fluid detection and response system in one aspect, and in another aspect, an environmental enclosure for at least a component of such leaked fluid detection system. Various embodiments of the leaked fluid detection and response system may provide wireless communication of detected leaks and a PLC that automates response and provides information regarding the presence of a leak. Enclosures may, in various embodiments, comprehensively surround enclosed components, thermally insulate enclosed components, include a leaked fluid capture basin, be aerodynamically streamlined, and/or be vermin-tight.

Abstract: A sensor for detecting the presence of a liquid. The sensor includes a housing having a concave upper surface, a concave lower surface, and a peripheral wall connecting the upper surface and the lower surface, the wall extending above the upper surface and below the lower surface. A plurality of apertures are formed in the wall. A plurality of electrically conductive members extend above the upper surface and below the lower surface and are separated from one another by a gap in which a liquid can accumulate. The electrically conductive members are configured to generate an output signal when a conductive liquid comes into contact with the electrically conductive members and bridges the gap. An output connector is coupled to the plurality of electrically conductive members and is configured to carry the output signal.

Abstract: A system and method for detecting leaks using sensors to report the leak and communicate with a control unit to turn off the source of the leak once detected. A valve can be turned off in the event of a leak and embodiments employing battery power can function during loss of power such as a power blackout. Wireless sensors can be employed to detect leaks that wirelessly communicate with a control and operate solely with a designated control unit. The wireless sensors can operate using low power provided by batteries. The control panel can display alarm conditions from the sensors, including: low battery, poor signal, wet sensor, communication failure, sensor failure.

Abstract: Tracking vibrations on a pipeline network includes installing multiple vibration recorders on the pipeline network, with each recorder including a sensor, a processor, and a communication device. At each vibration recorder, vibration signals are received from the sensor at programmed times under the control of the processor of the vibration recorders and processed by the processor. The processed vibration signals are communicated from the vibration recorder to a reader device using the digital communication device. In addition, at a particular vibration recorder, meter readings from a flow meter associated with the particular vibration recorder are received. The meter readings are indicative of a level of flow in the pipeline network, and are communicated from the particular vibration recorder to a reader device using the communication device of the particular vibration recorder. Thereafter, the processed vibration signals from the one or more reader devices are collected at a central computer system.

Abstract: A leak detection apparatus has a transducer arranged for detection of sound, the transducer translating the sound into an analog signal and a display device. In addition, the leak detection apparatus has logic configured to detect the analog signal and display to the display device a gain range corresponding to the signal.