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A practical buying guide

Loss in weight feeder: RFQ Checklist and Quotation Review

The key decision

A comparable loss in weight feeder quotation starts with loss in weight feeder application and required finished result, material flow, weighing and refill. Record the required result, site interfaces and acceptance evidence in one revision-controlled RFQ. IndustryApex engineers use these inputs to define the equipment, integration and OEM/ODM scope for your project.

Coperion K-Tron manufacturer functional design schematic for a loss-in-weight feeder, including load cells and controlled screw feed
Coperion K-Tron Manufacturer functional design schematic · Manufacturer reference image.
Shown as a configuration reference. Availability and the equipment offered for your project are confirmed separately.

This loss in weight feeder RFQ checklist is a working procurement document. Use it to turn the requirements in the Loss in weight feeder equipment guide into a written project brief and a comparable equipment offer.

What should a quotation for loss in weight feeder include?

Complete the product-specific requirements below. Keep buyer requirements, the proposed equipment response and unresolved points in separate columns. Attach the relevant drawings, samples or site records to the same RFQ revision.

Loss in weight feeder RFQ requirements and quotation evidence
Requirement to define How to make the response comparable
Loss in weight feeder application and required finished result Supply a representative example and its difficult variation. Identify the drawing, sample, photograph or production record used for the proposal.
Material flow
Specify powder or granule properties, flow range, cohesion and aeration. Screw or other feed tools must address bridging, flooding and changing bulk behavior.
Supply a representative example and its difficult variation. Identify the drawing, sample, photograph or production record used for the proposal.
Weighing and refill
Compare load measurement, isolation from vibration and refill strategy. The period when the hopper is refilled must be included in performance review.
State the required result and the operating case behind it. Request confirmation for that case and record any exclusions or assumptions.
Representative input variation and difficult operating conditions Record the actual requirement, its supporting document and any unresolved point. Request a written response against the same requirement revision.
Application risks and exclusions
Stable average flow can hide short disturbances during refill or bridging; define the measurement interval and allowed variation for the process.
Record the actual requirement, its supporting document and any unresolved point. Request a written response against the same requirement revision.
Site and supporting services
Plan flexible connections, stable support, dust control, refill supply and calibration access without imposing forces on the weighing system. The manufacturer functional design schematic shows the control architecture, not a dimensioned installation layout; require confirmed delivery dimensions, scale mounting and connection drawings for the selected configuration.
Attach the current revision and mark requested changes. Ask for the approved scope, engineering responsibility and change-control record.
Acceptance method and retained evidence
Measure actual delivered flow across rates and refill events with production material; inspect variability, residual material and recovery from interruptions.
Agree the sample or case, measurement method, record and decision owner. Ask which evidence is included in the quotation.
Maintenance and support scope
Inspect feed tools, load cells, flexible connections and seals; preserve calibration and product-specific flow settings.
Specify the required handover and support. Request the deliverables, responsible party and separately priced exclusions.
OEM/ODM changes requested
Hoppers, screws, refill interfaces and controls may be engineered; new powders require flow trials and dust review.
Agree the sample or case, measurement method, record and decision owner. Ask which evidence is included in the quotation.
Destination, local installation conditions and documentation language Record the actual requirement, its supporting document and any unresolved point. Request a written response against the same requirement revision.
Drawings, samples, tooling ownership and revision control Attach the current revision and mark requested changes. Ask for the approved scope, engineering responsibility and change-control record.
Operating sequence, changeovers, training and commissioning responsibilities Specify the required handover and support. Request the deliverables, responsible party and separately priced exclusions.

How to compare loss in weight feeder quotations

Return the same completed checklist to our engineering team when reviewing a revised offer. For each requirement, record the proposed configuration, included evidence, price boundary and open question. A blank response is an unresolved item; request clarification before treating two offers as equivalent.

  • Loss in weight feeder application and required finished result: identify the requirement revision, the proposed response and the document that supports it.
  • Material flow: identify the requirement revision, the proposed response and the document that supports it.
  • Weighing and refill: identify the requirement revision, the proposed response and the document that supports it.

Request separate scope lines for the main equipment, application-specific tooling or accessories, site connections, integration work, commissioning, training and support, where applicable. Record delivery terms, quotation validity and exclusions beside the quoted price. Keep optional items separate from items required for the stated result.

Loss in weight feeder acceptance criteria: what must be agreed?

Use the following equipment requirements to frame the acceptance discussion:

  • Acceptance method and retained evidence: Measure actual delivered flow across rates and refill events with production material; inspect variability, residual material and recovery from interruptions.
  • OEM/ODM changes requested: Hoppers, screws, refill interfaces and controls may be engineered; new powders require flow trials and dust review.

Have the responsible engineering personnel agree the test case and method for the exact offered equipment. Record the input or sample identification, supplied configuration, observations or measurements, agreed decision criteria, open deviations and sign-off responsibility. Separate evidence available at the factory from checks that depend on the installed site. Retain the accepted records with the equipment and document later requirement changes.

OEM/ODM loss in weight feeder: define the change boundary

  • OEM/ODM changes requested: Hoppers, screws, refill interfaces and controls may be engineered; new powders require flow trials and dust review.
  • Drawings, samples, tooling ownership and revision control

Distinguish approved standard options, branding and documentation from mechanical, electrical, control or process development. Send the intended application, current drawings, target market, quantities and requested changes. IndustryApex engineers review feasibility and define the proposed supply and engineering scope. Agree design ownership where relevant, the validation responsibility and the evidence that will accept the changed configuration. A reference photograph does not define the offered configuration or grant rights to relabel the pictured brand.

Build your loss in weight feeder project brief

Use the worksheet to record your inputs and open questions. You can download the brief or carry it into the project request. It is sent to IndustryApex only when you complete and submit that request form.

Complete your product-specific RFQ worksheet

You can edit the final requirements on the request form. No inquiry is submitted from this worksheet.

Use this brief in my project request ↗

Discuss the equipment scope with our engineers

Send the completed brief with the required result, destination and purchase timing. Our engineers can review the equipment configuration, application interfaces and requested customization, then identify the information still needed for a confirmed quotation.

Request a loss in weight feeder quotation ↗ · Discuss OEM requirements · Discuss ODM engineering

Related equipment scope: Volumetric additive feeder · Resin storage silo · Gravimetric resin blender.

Define your equipment requirements

Review the Loss in weight feeder buying guide for the complete equipment scope.

Discuss this equipment project ↗ · OEM requirements · ODM requirements. Configuration and feasibility are reviewed for your application.

Frequently asked questions

What belongs in an RFQ for loss in weight feeder?

Start with loss in weight feeder application and required finished result, material flow, weighing and refill. Complete the remaining product-specific requirements in the worksheet, and attach the relevant drawings, sample information and site records. State the destination, required result and purchase timing so our engineers can review a defined project.

How do I compare loss in weight feeder quotations on the same basis?

Use the same requirement revision for each comparison. Record the proposed configuration, included evidence, required accessories or integration, commissioning responsibilities, delivery terms and exclusions. Request a written response to unresolved requirements rather than comparing the main equipment price alone.

What belongs in the loss in weight feeder acceptance record?

Identify the approved input or sample, exact configuration, agreed method, observations or measurements, decision criteria, deviations and responsible sign-off. Agree with the responsible engineering personnel what can be checked at the factory and what depends on the installed site.

Can IndustryApex review OEM/ODM loss in weight feeder requirements?

Yes. Send the application, requested changes, drawings, target market, quantities and acceptance requirements. IndustryApex engineers review the proposed equipment and engineering scope. Feasibility, validation work, commercial terms and delivery are confirmed for the agreed project; the reference photograph does not establish branding rights.

Reference information

  • External Influences on Feeding Accuracy and How These Can Affect Overall Ingredient Costs – Coperion
  • Quick Change Feeder QC – K-Tron

Reference data and images explain equipment configurations. IndustryApex engineers confirm the offered model, specification and commercial scope in your project quotation.

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