An electronic scale includes a display unit for digitally displaying the weight of a load on a weighing dish, a tare subtraction key, a display control unit for controlling the display on the display unit and a memory for memorizing a zero adjustment range. The display control unit displays on the display unit a tare subtraction prompt display for prompting to push the tare subtraction key when the measurement value of the load increases over the upper limit of the zero adjustment range.

A magnetic suspension thermobalance based on quick photothermal heating comprises a sealed container, a reaction tank, a magnetic suspension device, a laser displacement monitoring component, a photothermal heating component and a photothermal heating component displacement device. A method comprises following steps: weighing a testing sample and adding same into the reaction tank; putting the reaction tank into the sealed container together with a magnetic suspension float; causing the magnetic suspension float to float in the sealed container; introducing gas into the sealed container; measuring the real-time position of the magnetic suspension float, and causing same to a measurement zero point; heating the reaction tank; maintaining a heating beam on the reaction tank; measuring the temperature of the testing sample in the reaction tank; and recording the displacement of the magnetic suspension float, and converting said displacement into mass.

Systems and methods for controlling a scale. One system includes a first touchless button, a first visual indicator associated with the first touchless button, a second touchless button, coupled to an electronic processor. The electronic processor is configured to receive, from the first touchless button, a first signal indicative of a first gesture. The electronic processor is configured to, in response to receiving the first signal, switch second touchless button from a dormant mode to an active mode and activate the first visual indicator. The electronic processor is configured to receive, from the second touchless button, a second signal indicative of a second gesture. The electronic processor is configured to, in response to receiving the second signal, execute a function of the scale associated with the second touchless button. The electronic processor is configured to switch the second touchless button from the active mode to the dormant mode.

Systems and methods for controlling a scale. One system includes a first touchless button, a first visual indicator associated with the first touchless button, a second touchless button, coupled to an electronic processor. The electronic processor is configured to receive, from the first touchless button, a first signal indicative of a first gesture. The electronic processor is configured to, in response to receiving the first signal, switch second touchless button from a dormant mode to an active mode and activate the first visual indicator. The electronic processor is configured to receive, from the second touchless button, a second signal indicative of a second gesture. The electronic processor is configured to, in response to receiving the second signal, execute a function of the scale associated with the second touchless button. The electronic processor is configured to switch the second touchless button from the active mode to the dormant mode.

A weighing machine includes a weighing unit that measures the weight of a product placed on a weighing table, a calculation unit that calculates the price of the product based on the weight of the product measured by the weighing unit, and a control unit that sets the price calculated by the calculation unit when the product is removed from the weighing table.

A weighing machine includes a weighing unit that measures the weight of a product placed on a weighing table, a calculation unit that calculates the price of the product based on the weight of the product measured by the weighing unit, and a control unit that sets the price calculated by the calculation unit when the product is removed from the weighing table.

The present invention relates to a sensing and control device (40) and method for a weight measurement device (30) comprising a load unit for loading material to be weighted. To enable precise measurement with less expensive components, said sensing and control device comprises analog circuitry (50) configured to receive a weight measurement signal, convert the received weight measurement signal into a first voltage signal, subtract a second voltage signal representing the weight of at least the load unit without being loaded with material to be weighted from the first voltage signal when the load unit is loaded with material to be weighted to generate a third voltage signal representing the weight of the material to be weighted, and control circuitry (60) configured to receive the first voltage signal while the load unit is not loaded with material to be weighted, convert the first voltage signal into a first digital signal, and generate a pulse width modulated, PWM, signal having a pulse width representing the weight measured by the load unit while not being loaded with material to be weighted, and further configured to convert the third voltage signal into a second digital signal representing the weight measurement of the material to be weighted. The analog circuitry (50) is configured to generate the second voltage signal from the PWM signal generated by the control circuitry, wherein the voltage level of the second voltage signal is proportional to the pulse width of the PWM signal.

An optical code scanner is presented that includes a weigh scale and a least one image capture device. The image capture device captures images that are used to read optical codes presented to the optical code scanner for reading. The image capture device further captures images of the top surface of a weigh plate on the weigh scale. The optical code scanner analyzes the images of the weigh plate before performing a zero function on the weigh scale to determine if an object has been placed on or is touching the weigh plate. The zero function is only performed when no object is placed on or is touching the weigh plate.

A weight scale system for measuring the weight of an object includes a bed section, a vertical separator actuator and a controller. The bed section includes a lower-platform, an upper-platform and weight sensor assemblies located on the lower-platform, each includes at least one weight sensor. The bed section further includes at least one vertical-separator. The vertical-separator actuator is coupled with the vertical-separator and with the controller. The controller is further coupled with the weight sensors. The controller directs the vertical-separator actuator to operate the bed section in at least two modes, a referencing mode in which the vertical-separator detaches the upper-platform from the weight sensor assemblies, thereby enabling referencing the weight sensors, and a weighing mode, in which the vertical separator re-attaches the upper-platform with the weight sensor assemblies, such the that the weight associated with the upper-platform is fully applied on the weight sensors.

The electronic balance is configured to be capable of performing the following series of operations (I) to (VII) automatically: (I) The opening and closing mechanism opens the door. (II) The moving up/down mechanism applies the load of the built-in weight to the weighing mechanism. (III) The opening and closing mechanism closes the door. (IV) After a predetermined period of time elapses, the opening and closing mechanism opens the door. (V) The moving up/down mechanism removes the load of the built-in weight from the weighing mechanism. (VI) The opening and closing mechanism closes the door. (VII) The control unit performs zero-point adjustment of the weighed value. Accordingly, operation of preliminary loading is automatically performed, and thus the stability of the weighing accuracy is improved.