The picture shows a simple gross valve scale, which works on the gravitational principle. Here it is necessary that the bagged material is sufficiently free-flowing.
The balance works in a semi-automatic mode, when the operator puts the bag on the valve, starts the filling and removes the bags. The dosing is then automatic.
The scale is intended for business use.
Technical typical parameters of the device:
Upper weighing limit 30 kg,
Weight division d = 0.02 kg
Static accuracy + - d,
Dynamic accuracy - + 0.2 kg
Optimal granulometry 0.5-4mm
The capacity of the device at a dose of 25 kg is about 150 bags / hour.