Weighing is done on a weighing filling machine with a scale installed at each filling station. When the predetermined mass is reached, the scale action cuts off the flow. Each scale is adjusted to a mass equivalent to the contents of the liquid and the container. If the quality of the contents and the container are changed, a specific mass can be added to each filling station.
The mass is measured by the gauge weight sensor, and after the predetermined mass is reached, the control element and the actuator are actuated to cut the filling.
There is also a net-weight filling machine that uses a force-measuring sensor to measure the quality of the container and then start filling until the product in the container reaches the predetermined net quality.
Timing filling controls the amount of filling by controlling the time it takes for the liquid to flow out, as shown. First, the external pressure pump causes the liquid to flow into the disc with the groove, and the opening time of the injection hole on the rotating metering disc is used to measure the outflow amount of the liquid material (ie, the constant volume flow rate), and the rotation speed determines the filling port in the groove. The time to stay under the trough. If several metering grooves are used, several different liquid materials can be filled in the same container. This method is more accurate for medium viscosity liquid materials. For low viscosity liquid materials, the leakage between the two discs is difficult to control, and the accuracy is slightly poor.