To obtain the weight of the payload (the net weight) the tare weight (the weight of the empty truck) must then be subtracted from the gross weight. The weight of the payload, including the weight of the truck, is measured by first driving the truck onto the weighbridge this weight is referred to as the gross weight. The controller digitizes the signal from the junction box using analog to digital converter (ADC) and weigh is registered on LED display.
Junction box combine the signals of multiple load cells and then transmit the summed signal to weighbridge controller.
The analog signal from each load cell is sent to the junction box.
The change in the wire results in a difference in the resistance to the current passing through it. A strain gauge consists of a wire (or wires) that transmits a mild electric current.Īs the cell is subjected to weight, the wire in the load cell strain gauge is altered or compressed slightly. Each load cell is comprised of a durable material such as steel or concrete with one or more strain gauges attached to or embedded in it. The entire steel platform is mounted on load cells. Cables – the signal from the load cells must be transmitted to the terminal. It displays the weight value to the operator, and often serves as the connection point for other scale peripherals.ĥ. Terminal – sometimes referred to as an indicator, the terminal is the control panel for the scale.