Load Cell with Remote Display

To accurately read and process the load cell values, displays form an essential part of the weighing system. While display units are mostly integrated to the weighing scales, it is not always possible to read the values directly at the location of the weighing.

For example, in the case of vehicle scales, shipping and picking scales, concrete mixing plants, and industrial scales, the electronics used for the physical measurements are often located at a greater distance from the physical parameter under measurement.

This is where remote displays are useful. They serve as secondary displays to the already integrated displays used to read the weighing results. Remote display essentially consists of a large 7-segment display with approximately 100mm digit height to offer an impressive view even from a long distance. They are easy to set up and require simply plugging into the scale’s RS-232 port.

Remote displays can be easily mounted on desktop, wall, or panel. Additionally, these displays make it easy to connect your computer to the scale and capture the results for further assessment/analysis.

But, it is also important to note that remote displays can yield unsatisfactory results if the distance between the scale and the remote display is too large (approx. 10 feet away from the converter output terminals). This is because wires and connectors have their resistance. Longer the cable runs, the more uncertain the results are going to be. Additionally, signals are prone to disturbance due to the noise in an industrial setting. In such error-prone conditions, readings on a remote display might not remain accurate for a longer duration.

To avoid this, an instrumentation amplifier is usually employed to amplify the signals from a distant load cell via long cable runs. The amplifier provides clean differential voltage to display accurate measurement values on the remote display.

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