Difference between volumetric feeder vs gravimetric feeder

Feeders are used to handle bulk solids. There are two types of feeders, which we call gravity feeders and volumetric feeders. A gravity feeder consists of a volumetric feeder associated with a weighing system. Gravity feeders measure and control the discharge of substances at a constant weight per unit of time. Another form of feeder, a positive displacement feeder is a screw conveyor that operates at a constant speed and discharges a constant volume of material per unit of time.

What is a gravimetric feeder?

Gravity feeder is an important instrument for controlling and measuring material velocity in instrument system. This equipment can handle bulk solids. It allows solids to be discharged with a constant weight per unit of time.

The measurement unit is kg/min, and the weight signal is used as a feedback control system. It controls and monitors the feed rate into a specific instrument. Weighing systems include several examples such as bench scales, load cells, weighing hoppers, etc. Depending on the overall process, a gravity feeder can be a weight loss system or a weight gain system.

What is a volumetric feeder?

The dosing machine is an important instrument for controlling and measuring the speed of material entering the system. It measures the discharge rate of a solid at a constant volume per unit time. The unit of measurement is L/min. Volumetric feeders are usually screw conveyors running at a constant speed.

The equipment includes several components such as vibrating system, stirring, massaging, etc. to ensure feeding uniformity and constant feed flow. This system is important when we cannot build a gravity feeder.

Volumetric feeders are important instruments for controlling and measuring the rate of material entering the system. They contain a screw conveyor that runs at a constant speed. However, the gravity feeder is an important instrument for controlling and measuring the velocity of the material in the instrumentation system. They include volumetric feeders associated with weighing systems such as bench scales, load cells, weigh hoppers, etc. Additionally, volumetric feeders measure solids discharge with a constant weight per unit of time, while gravimetric feeders measure solids discharge rate with a constant volume per unit of time. This is the main difference between a gravity feeder and a volumetric feeder.