Abstract: A velocity sensor and housing therefore, the velocity sensor provides a measurement of the velocity in a sewer manhole or chamber. The velocity sensor includes an ultrasonic transducer that emits a signal to measure the liquid below and may use an additional transducer or it is used by itself to detect the signal reflected from the surface. A parabolic reflector is designed and arranged to direct the emitted ultrasonic signal from the transducer to the surface with a linear beam while minimizing the beam spread. The return echo may either be measured directly or with the same transducer that was used to transmit the ultrasonic signal.

Abstract: A velocity sensor and housing therefor, the velocity sensor provides a measurement of the velocity in a sewer manhole or chamber. The velocity sensor includes an ultrasonic transducer that emits a signal to measure the liquid below and may use an additional transducer or it is used by itself to detect the signal reflected from the surface. A parabolic reflector is designed and arranged to direct the emitted ultrasonic signal from the transducer to the surface with a linear beam while minimizing the beam spread. The return echo may either be measured directly or with the same transducer that was used to transmit the ultrasonic signal.

Abstract: A level sensor and housing therefor, the level sensor provides a measurement of the depth in a sewer manhole or chamber. The level sensor includes an ultrasonic transducer that emits a signal to measure the liquid below and may use an additional transducer or it is used by itself to detect the signal reflected from the surface. A parabolic reflector is designed and arranged to direct the emitted ultrasonic signal from the transducer to the surface with a linear beam while minimizing the beam spread. The return echo may either be measured directly or with the same transducer that was used to transmit the ultrasonic signal. The narrow ultrasonic beam with limited spread will allow measuring level in a sewer manhole or confined chamber or any sewer where the level is measured close to a vertical wall.

Abstract: A level sensor and housing therefor, the level sensor provides a measurement of the depth in a sewer manhole or chamber. The level sensor includes an ultrasonic transducer that emits a signal to measure the liquid below and may use an additional transducer or it is used by itself to detect the signal reflected from the surface. A parabolic reflector is designed and arranged to direct the emitted ultrasonic signal from the transducer to the surface with a linear beam while minimizing the beam spread. The return echo may either be measured directly or with the same transducer that was used to transmit the ultrasonic signal. The narrow ultrasonic beam with limited spread will allow measuring level in a sewer manhole or confined chamber or any sewer where the level is measured close to a vertical wall.

Abstract: A method and system for analyzing flow of a substance in a sewer system determines a first flow velocity at a first location and a second flow velocity at a second location. Using a processor, the travel time between the two locations is determined using only the flow velocities and a constant. The travel time may then be used to provide a substantially accurate determination of net flow between the two locations.

Abstract: A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation events may be predicted, in real time, by measuring intervals of the precipitation event and calculating the scaled response as a function of the modeled response and the precipitation quantity measured during the precipitation event.

Abstract: A method and system for monitoring and analyzing flow in a sewer system includes the steps of using a monitoring assembly to collect data representative of actual flow volume of a fluid substance in a first location such as a sewer pipe, storing the actual flow volume data in a memory, maintaining previously stored data in the memory, determining a predicted flow volume and comparing the actual flow volume with the predicted flow volume to yield a difference value. The predicted flow volume is dependent on the data selected from the previously stored data and a day and time that corresponds to both the actual flow volume data and the data selected from the previously stored data. The predicted flow volume may also be dependent upon additional data corresponding to a rain event.

Abstract: A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation events may be predicted, in real time, by measuring intervals of the precipitation event and calculating the scaled response as a function of the modeled response and the precipitation quantity measured during the precipitation event.

Abstract: A method and system for analyzing flow of a substance in a sewer system determines a first flow velocity at a first location and a second flow velocity at a second location. Using a processor, the travel time between the two locations is determined using only the flow velocities and a constant. The travel time may then be used to provide a substantially accurate determination of net flow between the two locations.

Abstract: A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation events may be predicted, in real time, by measuring intervals of the precipitation event and calculating the scaled response as a function of the modeled response and the precipitation quantity measured during the precipitation event.

Abstract: A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation events may be predicted, in real time, by measuring intervals of the precipitation event and calculating the scaled response as a function of the modeled response and the precipitation quantity measured during the precipitation event.

Abstract: A method and system for monitoring and analyzing flow in a sewer system includes the steps of using a monitoring assembly to collect data representative of actual flow volume of a fluid substance in a first location such as a sewer pipe, storing the actual flow volume data in a memory, maintaining previously stored data in the memory, determining a predicted flow volume and comparing the actual flow volume with the predicted flow volume to yield a difference value. The predicted flow volume is dependent on the data selected from the previously stored data and a day and time that corresponds to both the actual flow volume data and the data selected from the previously stored data. The predicted flow volume may also be dependent upon additional data corresponding to a rain event. When the difference value exceeds a predetermined variance value, the method may further include the step of issuing a flow loss notification.

Abstract: A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation events may be predicted, in real time, by measuring intervals of the precipitation event and calculating the scaled response as a function of the modeled response and the precipitation quantity measured during the precipitation event.

Abstract: A method and system for analyzing flow of a substance in a sewer system determines a first flow velocity at a first location and a second flow velocity at a second location. Using a processor, the travel time between the two locations is determined using only the flow velocities and a constant. The travel time may then be used to provide a substantially accurate determination of net flow between the two locations.