Lost-in-Weight Feeder

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Lost-in-Weight Feeder

Real-time monitoring of material weight keeps the feeding error within an extremely low range

Automatically adjusts the feeding speed to prevent fluctuations in material volume from affecting production line operations.

Solution

Product Matrix

Pneumatic Conveying & Metering

Lost-in-Weight Feeder

Product Characteristics

Stable Metering Accuracy

Based on the principle of weight loss, the equipment is less affected by the state of materials and has low long-term operating errors, ensuring that material feeding meets the process requirements.

Excellent Compatibility with Automated System

It can be integrated into control systems to automatically adjust feeding speed and correct deviations, while also providing data feedback to reduce manual intervention.

Adapting to Various Materials

Capable of handling common materials such as granules and powders. For materials with slight adhesiveness or specific moisture levels, adaptation can be achieved by adjusting the equipment structure.

Technical Parameters

Name	Parameters
Equipment Name	Weight-in-Loss Feeder
Production Capacity	0.5~1300kg/h
Precision	±1g
Drive Unit	Servo motor/ AC motor
Equipment Material	304/316 stainless steel

Maintenance and Services

of Loss-in-Weight Feeder

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Q Working Principles of the Weight-in-Loss Feeder

The key steps involve "dynamic weighing + closed-loop speed control." The silo and feeding unit are entirely mounted on the load cells. After initial weighing, materials are continuously discharged by the feeder while the sensors monitor the rate of weight change in real time. The controller compares the actual flow rate with the set value and automatically adjusts the feeding speed (e.g., by varying the frequency to regulate screw/belt rotation). When the material level becomes too low, the refilling valve is activated, temporarily switching to volumetric feeding during replenishment to ensure continuous and precise material supply.

Q Can the weight -in-loss feeder be customized?

The equipment offers strong adaptability and can be customized to meet specific requirements. Material characteristics (e.g., powders/granules/adhesive materials) determine the feeding unit (screw/belt/vibratory) and the anti-adhesion design of the silo (polished inner walls/pneumatic hammer). The flow rate range (1–1000 kg/h) is matched with the load cell’s capacity and accuracy (±0.1%–±1%). Vertical or horizontal structures can be customized according to installation space constraints. For special needs, options such as explosion-proof design, metal detection, and dust covers are available to suit high-temperature or dusty operating conditions.

Q Maintenance of Weight-in-Loss Feeder

Daily Maintenance: Before each shift, inspect the weighing sensors for abnormal sounds and the feeding unit for lubrication, and clean any residual material from the silo. After each shift, turn off the power and wipe down the equipment surfaces. Periodic Maintenance: Calibrate the weighing sensors weekly (using standard weights) and inspect the feeder for wear. Replace sealing components and clean dust from the sensor junction box monthly. Test control system parameters quarterly to ensure accurate flow rate feedback.

Q Precautions

Before starting up, ensure that the weighing system is free from obstructions and parameters are accurately set. Conduct a no-load test run for 30 seconds before feeding. During operation, avoid impacting the weighing module to prevent sensor damage from overload; monitor flow fluctuations during refilling and make timely adjustments if abnormalities occur. For adhesive materials, shorten the cleaning cycle to prevent agglomeration from affecting weighing accuracy. Power must be switched off before maintenance, and sensors should be handled gently during disassembly to avoid severe shocks.

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