Systems, methods, and computer program products for monitoring a level of product in a reservoir of a chemical dispensing system. A lid configured to engage an opening of a container includes a level sensor having a transceiver that transmits an output signal and receives a portion of the output signal reflected back to the transceiver. The level sensor determines an amount of the product in the container by comparing a characteristic of the reflected signal, such as time the reflected signal was received, to the characteristic of the output signal, such as the time the output signal was transmitted. The level sensor may also determine the size of the container based on the reflected signal, and take this size into account when determining the amount of product in the container. The level sensor transmits product level data to a mobile device in response to receiving an interrogation signal therefrom.

The measuring-device system comprises two measuring devices and an evaluating- and supply electronics. Each of the measuring devices has a measured variable transducer and a measurement transmitter. Each of the transducers is adapted to react to a measured variable and to provide a corresponding transducer signal. The first measurement transmitter includes an interface circuit both for wired energy supply and for wired signal transmission on a two-wire loop. The second measurement transmitter includes an interface circuit for wired energy supply and a radio unit. The evaluating- and supply electronics feeds electrical power into the two-wire loop during operation. Both measurement transmitters are adapted to draw electrical power from the electrical current loop. Additionally, the first measurement transmitter is adapted to transmit its measurement signal via the electrical current loop to the evaluating- and supply electronics.

A radar level gauge for determining a filling level of a product in a tank, comprising a volatile high-speed working memory, a first processing unit connected to the volatile high-speed working memory, the first processing unit having an active mode in which the first processing unit is turned on and accesses the working memory, and an inactive mode where the first processing unit is turned off, memory loading circuitry, separate from the processor, configured to transfer software code from a non-volatile memory into the volatile high-speed working memory while the processor is in inactive mode, and an auxiliary power connection configured to provide power only to the volatile high-speed working memory and the memory loading circuitry.

With this design, the memory loading circuitry and working memory can be powered separately, thereby allowing loading of software code from the non-volatile memory into the volatile high-speed working memory without activating the relatively power-hungry processor.

A radar level gauge for determining a filling level of a product in a tank, comprising a volatile high-speed working memory, a first processing unit connected to the volatile high-speed working memory, the first processing unit having an active mode in which the first processing unit is turned on and accesses the working memory, and an inactive mode where the first processing unit is turned off, memory loading functionality, configured to transfer software code from a non-volatile memory into the volatile high-speed working memory, wherein the memory loading functionality is further configured to divide the software code into a plurality of smaller portions, and transfer one such smaller portion at a time.

By dividing the software code which is to be transferred into a plurality of smaller portions, the energy required to complete transfer of one such smaller portion can be sufficiently small to allow energy storage capacity of feasible size and cost.

To determine an echo curve using a fill level measurement device operating according to the FMCW principle, the echo curve is calculated from corresponding sampling values at a first resolution. After this, a particular portion of the echo curve is calculated at a second, higher resolution using the DTFT algorithm. This can reduce the complexity required for calculating the echo curve.

Systems, methods, and computer program products for monitoring a level of product in a reservoir of a chemical dispensing system. A lid configured to engage an opening of a container includes a level sensor having a transceiver that transmits an output signal and receives a portion of the output signal reflected back to the transceiver. The level sensor determines an amount of the product in the container by comparing a characteristic of the reflected signal, such as time the reflected signal was received, to the characteristic of the output signal, such as the time the output signal was transmitted. The level sensor may also determine the size of the container based on the reflected signal, and take this size into account when determining the amount of product in the container. The level sensor transmits product level data to a mobile device in response to receiving an interrogation signal therefrom.

A pulse running time filling level sensor includes a sampling device for sampling an IF signal at discrete instants and for converting the sampling values into digital sampling values, and a digital signal processing device for subsequent processing of the digital sampling values by calculating at least one new value characterizing the IF curve from respectively exactly two digital sampling values.

A container content monitoring system includes at least one container content monitoring device including a housing, a weight sensor configured to detect a weight of an container, a temperature sensor configured to detect a temperature of the container, a lid sensor to determine presence or removal of the lid, a transceiver, and a controller operatively connected to the temperature sensor, the weight sensor, the lid sensor and the transceiver. The transceiver may be configured to communicate with a cloud server remote from the container content monitoring device. The container content monitoring system further includes a router device configured to communicate with the at least one container content monitoring device, a cloud server remote from the at least one container content monitoring device, and a first user device configured to communicate with the cloud server.

Systems, methods, and computer program products for monitoring a level of product in a reservoir of a chemical dispensing system. A lid configured to engage an opening of a container includes a level sensor having a transceiver that transmits an output signal and receives a portion of the output signal reflected back to the transceiver. The level sensor determines an amount of the product in the container by comparing a characteristic of the reflected signal, such as time the reflected signal was received, to the characteristic of the output signal, such as the time the output signal was transmitted. The level sensor may also determine the size of the container based on the reflected signal, and take this size into account when determining the amount of product in the container. The level sensor transmits product level data to a mobile device in response to receiving an interrogation signal therefrom.

Systems, methods, and computer program products for monitoring a level of product in a reservoir of a chemical dispensing system. A lid configured to engage an opening of a container includes a level sensor having a transceiver that transmits an output signal and receives a portion of the output signal reflected back to the transceiver. The level sensor determines an amount of the product in the container by comparing a characteristic of the reflected signal, such as time the reflected signal was received, to the characteristic of the output signal, such as the time the output signal was transmitted. The level sensor may also determine the size of the container based on the reflected signal, and take this size into account when determining the amount of product in the container. The level sensor transmits product level data to a mobile device in response to receiving an interrogation signal therefrom.