A weighing sensor is actually a device that converts a mass signal into a measurable electrical output. The force sensor is a device that converts the force value into an electrical signal.
The weight sensor only measures the weight, and only the direction of the gravitational field. And the weight is always going to be greater than 0. If a container is placed under a weighing sensor, it does not produce a weight in the opposite direction. Force sensors, on the other hand, can measure the forward direction, the reverse direction as well as tension and pressure.
The weighing sensor is manufactured in the factory and then calibrated in the field. The force sensor should be calibrated in the factory immediately after production, and the measurement value should be the same after the sensor is removed and installed. As a result, the force sensor has a more robust construction than the weight sensor to ensure repeatability of the measured value under changing conditions.
The standards of the weight sensor and the force sensor are different. The weight sensor is generally the trade scale standard, while the force sensor needs to meet the VDI 2635 or ISO 376 standards. Among these criteria, repeatability is the most important factor.