Loss-in-weight vibratory feeders

Loss-in-weight vibratory feeders DVC

Q: Why choose a vibratory feeder over a screw feeder?

A vibratory feeder has no rotating mechanical parts — the material is not exposed to shearing or abrasion by a screw. That is the decisive advantage with brittle products (flakes, fibres, pellets) and highly abrasive ones. The wide turndown ratio (up to 1:100) allows work at very low flow rates, and with no wearing parts the unit runs virtually maintenance-free.

Q: How do I choose between the DVC45, DVC60 and DVC200?

The DVC45 (up to 450 l/h, hopper 15–30 l) suits micro-ingredients and low flow rates. The DVC60 (up to 1000 l/h, hopper 45–90 l) is the all-round model for most production lines. The DVC200 (up to 5000 l/h, hopper 100–300 l, weighing on two OIML C3 IP68 load cells) handles main recipe ingredients and high capacities.

Q: What materials can be fed with the DVC?

DVC feeders work best with free-flowing materials and granulates — brittle products (breakfast cereals, soluble coffee), abrasive ones (glass-fibre-filled granulates, sand) and delicate ones (pellets, seeds, tablets). Strongly cohesive materials and fine powders are better fed with the DSL G screw feeder and its agitator.

Q: Can the DVC operate in both continuous and batch modes?

Yes — in continuous mode it holds a constant mass flow under PID control, with accuracy better than ±0.5% of set value. In batch mode it weighs out the target mass and stops automatically — the instant cut-off once the vibration stops eliminates after-flow. Accuracy in batch mode is typically ±0.1–0.5% for batches above 1 kg.

Q: How is cleaning and product changeover carried out?

The modular construction makes the parts in contact with the material easy to strip down; a version that dismantles without tools is available to order. With no screw and no agitator there is less surface to clean — product changeover is faster and the risk of cross-contamination lower.

Q: How does automatic hopper refilling work?

When the material level in the hopper falls below the minimum, the system starts refilling automatically without interrupting the feed. During refilling the feeder runs volumetrically at the last stored amplitude, then returns to full gravimetric mode once the hopper is full.

Q: Can the DVC feeder be integrated into a larger system?

Yes — the DVC runs on its own or as part of an installation: in multi-ingredient blending lines, in packing systems, and as a feeder into mixers, extruders or pneumatic conveying. Communications over EtherNet/IP, Modbus TCP/IP, PROFIBUS or PROFINET allow integration with the plant control system.

Precise loss-in-weight feeding of brittle and abrasive materials and granulates — with no rotating parts whatsoever in the product zone. Three models: DVC45, DVC60 and DVC200, with feed rates up to 5000 l/h.

Compare the models Datasheets

feeding accuracy ±0.5% turndown ratio up to 1:100 no moving parts in the product zone builds compliant with ATEX, HACCP and GMP

What vibratory feeders are

Gentle feeding with no moving parts

DVC gravimetric vibratory feeders operate on the loss-in-weight principle and deliver free-flowing bulk materials — granulates, flakes and pellets — quickly and accurately. The material travels along an electromagnetically driven vibrating tray, with no screw and no agitator. Brittle material is neither crushed nor abraded, and stopping the vibration cuts the flow off instantly, with no after-flow into the equipment below. The DVC family comes in three sizes — DVC45, DVC60 and DVC200 — covering feed rates from 0.1 to around 5000 kg/h.

DVC45

Compact precision

The smallest model in the family, for low flow rates — laboratories, additives and micro-ingredients. A 15 or 30 l hopper and a light structure that fits into existing lines.

up to 450 l/h hopper 15–30 l

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DVC60

The versatile standard

The most frequently chosen model, for continuous and batch feeding on production lines. A 45 or 90 l hopper and a rigid stainless steel frame.

up to 1000 l/h hopper 45–90 l

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DVC200

Industrial capacity

The largest model in the family — weighing on two OIML C3 IP68 load cells, hoppers of 100–300 l and feed rates up to 5000 l/h, with feeding just as gentle.

up to 5000 l/h hopper 100–300 l

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DVC45 vibratory feeder

Compact precision

DVC45 gravimetric vibratory feeder with a conical hopper — DVC45 — conical hopper 15/30 l, weighing on a C3 load cell

The DVC45 is the smallest model in the family — intended for low flow rates and micro-ingredient feeding. A conical hopper serves as the container, guaranteeing even emptying, while the electromagnetic drive with feedback control allows operation close to the resonant frequency. The modular construction makes it easy to strip down for cleaning; the cover has ports for filling and venting.

Key DVC45 specifications

Accuracy±0.5% of set value
Volumetric feed rateup to 450 l/h
Hopper (conical)15 or 30 l
Weighing system1 load cell, class C3, IP66 (IP68 optional)
Driveelectromagnetic, 230 V AC, 50 Hz
Total weight28 kg (15 l) / 32 kg (30 l)
Operating temperature0–50°C
Materialssteel 1.4301 (AISI 304) or 1.4404 (AISI 316L)

Downloads

Datasheet DVC45 (PDF)

DVC60 vibratory feeder

The versatile standard

The DVC60 is the all-round model for continuous and batch feeding on production lines. A larger hopper (45 or 90 l) and a more powerful electromagnetic drive give feed rates of up to 1000 l/h while holding the same ±0.5% accuracy. Every part in contact with the product is made of stainless steel, and the optional hygienic build (continuous welds, surfaces ground to Ra<0.8 µm) meets the requirements of the food and pharmaceutical industries.

Key DVC60 specifications

Accuracy±0.5% of set value
Volumetric feed rateup to 1000 l/h
Hopper (conical)45 or 90 l
Weighing system1 load cell, class C3, IP66 (IP68 optional)
Driveelectromagnetic, 230 V AC, 50 Hz
Total weight87 kg (45 l) / 97 kg (90 l)
Operating temperature0–50°C
Materialssteel 1.4301 (AISI 304) or 1.4404 (AISI 316L)

Downloads

Datasheet DVC60 (PDF)

DVC60 gravimetric vibratory feeder in a stainless steel frame — DVC60 — stainless steel frame, hopper 45/90 l

DVC200 vibratory feeder

Industrial capacity

DVC200 gravimetric vibratory feeder with a control panel — DVC200 — hopper 100–300 l, weighing on two OIML C3 IP68 load cells

The DVC200 extends the DVC family into industrial feed rates — up to 5000 l/h. The conical hopper enforces mass flow and even emptying, and feeding runs in a loss-in-weight loop with measurement on two OIML class C3 load cells (stainless steel, IP68). The weighing signal trims the vibration amplitude continuously, compensating for changes in bulk density and flowability — the feed characteristic stays linear and repeatable across the whole 1:50 turndown range, with minimal pulsation in the discharge.

Key DVC200 specifications

Accuracy<0.5% of set value
Volumetric feed rateup to 5000 l/h
Turndown ratio1:50
Hopper (conical)100, 200 or 300 l
Weighing system2 OIML C3 load cells, stainless steel, IP68
Driveelectromagnetic with amplitude feedback
Operating / material temperature0–45°C / 0–60°C
Materialssteel 1.4301 (AISI 304) or 1.4404 (AISI 316L)

Downloads

Datasheet DVC200 (PDF)

DVC45 vs DVC60 vs DVC200

Which model should you choose?

In short: DVC45 up to 450 l/h, DVC60 up to 1000 l/h, DVC200 up to 5000 l/h. We match the size of the feeder to the flow required, the batch size and the space available for installation. All three models share the same operating principle and the same control system.

Parameter	DVC45 compact	DVC60 all-rounder	DVC200 high capacity
Volumetric feed rate	up to 450 l/h	up to 1000 l/h	up to 5000 l/h
Hopper capacity	15 / 30 l	45 / 90 l	100 / 200 / 300 l
Accuracy (continuous)	±0.5%	±0.5%	<0.5%
Weighing system	1 C3 load cell, IP66	1 C3 load cell, IP66	2 OIML C3 load cells, IP68
Total weight	28–32 kg	87–97 kg	depending on hopper configuration
Operating temperature	0–50°C	0–50°C	0–45°C (material up to 60°C)
Typical application	Micro-ingredients, laboratories, additives	Production lines, continuous and batch feeding	High flow rates, main recipe ingredients
Shared features	Electromagnetic drive with feedback control · AISI 304/316L steel · modular construction · options: hygienic build, Ex (ATEX), cartridge filter, grate and feed hopper · communications over EtherNet/IP, Modbus TCP/IP, PROFIBUS, PROFINET

Loss-in-weight

Operating principle — feeding in a loss-in-weight loop

The entire feeding assembly — the conical hopper holding the material and the vibrating tray with its drive — rests on load cells and is flexibly connected to the infeed and the discharge pipe, which keeps external forces out of the measurement. The system measures the loss of weight over time and derives the actual mass flow from it. A PID controller compares that against the set value and trims the vibration amplitude of the electromagnetic drive — the feed characteristic stays linear across the whole capacity range.

When the material level in the hopper falls below the minimum, refilling starts automatically without interrupting the feed — the feeder switches briefly to volumetric mode at the last stored amplitude, then returns to full gravimetric mode once refilled. Switching the vibration off stops the material flow instantly, giving a fast, clean cut-off when batch feeding.

Choosing the technology

When to choose a vibratory feeder over a screw feeder?

We choose a vibratory feeder wherever the material has to be moved without contact with rotating parts — for brittle products (flakes, fibres, pellets) and highly abrasive ones (glass-fibre-filled granulates). The DSL G screw feeder handles fine, cohesive powders better and offers a wider feed rate range. The decision rests above all on the physical properties of the material — and where there is any doubt, we run feeding trials on a sample of your product.

Criterion	Vibratory (DVC)	Screw (DSL G)
Feeding principle	Electromagnetic drive — vibration	Rotating screw / spiral
Moving parts	None — gentle handling, no wear	Screw + agitator
Optimal materials	Brittle, abrasive, granulates, flakes, fibres	Powders (fine and coarse), cohesive materials
Feed rate range	0.1 – approx. 5000 kg/h	0.5 – 30000 kg/h
Turndown ratio	up to 1:100	1:10
Flow cut-off	Instant — vibration stops, material stops	Residual flow from the screw possible
Accuracy (LIW, continuous)	<±0.5% of set value	<±0.5% of set value
Cleaning	Modular construction, tool-free dismantling optional	Screw and agitator removal required

Industries and applications

Applications across key industries

🍞 Food Industry

Gentle feeding of breakfast cereals, nuts, dried fruit, soluble coffee and food additives. The absence of moving parts keeps the structure of brittle products intact, and the stainless steel construction meets HACCP requirements.

💊 Pharmaceutical Industry

Precise feeding of pharmaceutical granulates, pellets and damage-sensitive products — including uncoated tablets. The hygienic build (welds ground to Ra<0.8 µm) and the optional tool-free dismantling for cleaning allow GMP-compliant operation.

Vibratory feeding in the chemical and plastics industries

⚗️ Chemicals and Plastics

Feeding abrasive materials, glass fibres, chemical granulates, regrind and products with irregularly shaped particles — into extruders and continuous mixers among others. The absence of moving parts eliminates wear on the feeding components; Ex versions are available for potentially explosive atmospheres.

FAQ

Frequently asked questions

Why choose a vibratory feeder over a screw feeder?

A vibratory feeder has no rotating mechanical parts — the material is not exposed to shearing or abrasion by a screw. That is the decisive advantage with brittle products (flakes, fibres, pellets) and highly abrasive ones (glass-fibre-filled granulates, for example) that would wear a screw out. The wide turndown ratio (up to 1:100) also allows work at very low flow rates, and with no wearing parts the unit runs virtually maintenance-free.

How do I choose between the DVC45, DVC60 and DVC200?

The primary criteria are the flow required and the batch size. The DVC45 (up to 450 l/h, hopper 15–30 l) suits micro-ingredients and low flow rates. The DVC60 (up to 1000 l/h, hopper 45–90 l) is the all-round model for most production lines. The DVC200 (up to 5000 l/h, hopper 100–300 l, weighing on two OIML C3 IP68 load cells) handles main recipe ingredients and high capacities. We also take into account the bulk density of the material, how often the hopper is refilled and the space available — we help with the selection on the basis of a questionnaire or trials.

What materials can be fed with the DVC?

DVC feeders work best with free-flowing materials and granulates — including brittle products (breakfast cereals, soluble coffee), abrasive ones (glass-fibre-filled granulates, sand) and delicate ones (pellets, seeds, tablets). Strongly cohesive materials and fine, dusty powders are better fed with the DSL G screw feeder and its agitator. Where there is any doubt, we run feeding trials on a sample of the customer’s material.

Can the DVC operate in both continuous and batch modes?

Yes — DVC feeders support both. In continuous mode they hold a constant mass flow under PID control, with accuracy better than ±0.5% of set value (FLEX 2100, ALPHA and Siwarex WP361 systems). In batch mode they weigh out the target mass and stop automatically — the instant cut-off once the vibration stops eliminates after-flow (1020/SGM800, FLEX 2100, ALPHA and Siwarex WP351 systems). Accuracy in batch mode depends on the load cell range and the batch size — typically ±0.1–0.5% for batches above 1 kg. Switching between modes is done in software.

How is cleaning and product changeover carried out?

The modular construction makes the parts in contact with the material easy to strip down; a version that dismantles without tools is available to order. With no screw and no agitator there is less surface to clean than in a screw feeder — product changeover is faster and the risk of cross-contamination lower. The optional hygienic build includes continuous welds inside and out and surfaces ground to Ra<0.8 µm.

How does automatic hopper refilling work?

When the material level in the hopper falls below the set minimum, the system starts refilling automatically — without interrupting the feed. During refilling the feeder runs volumetrically at the last stored amplitude, then returns to full gravimetric mode once the hopper is full. The hopper cover has ports for filling and venting, so it can be connected to pneumatic conveying, a rotary valve or manual filling through a grate.

Can the DVC feeder be integrated into a larger system?

Yes — the DVC runs on its own or as part of an installation: in multi-ingredient blending lines (alongside DSL G screw feeders and belt weighfeeders), in packing systems, and as a feeder into mixers, extruders or pneumatic conveying. Communications over EtherNet/IP, Modbus TCP/IP, PROFIBUS or PROFINET allow the feeder to be integrated with the plant control system and with recipe automation.

Why InterProcess

Why choose our solutions?

In-house manufacturing

We design and build DVC feeders at our own works.

Feeding trials

We will test your material on a real feeder before you buy.

A complete feeder range

Vibratory, gravimetric and volumetric screw, and belt weighfeeders.

Multi-ingredient systems

We design turnkey recipe-based feeding lines.

Safety and hygiene

Systems compliant with ATEX, HACCP and GMP.

Technical support and service

With a fast response, including 24/7 cover.

Looking for a vibratory feeder?

Get in touch and our engineers will help you choose the right model — DVC45, DVC60 or DVC200 — matched to the properties of your material and the demands of your process. We also offer feeding trials on a sample of your product.

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