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Buyer due-diligence tool
Compare level sensor, flow meter, pressure instrument, and OEM suppliers using records that can be checked by engineering and procurement teams.
Ask the supplier to identify the exact model, document revision, scope, open questions, exclusions, and commercial assumptions. Keep certificates, customer records, internal QC files, and other protected evidence private unless the owner approves a controlled release.
Confirm who is selling, where the relevant work is performed, and who owns the response.
Legal company name, registered address, manufacturing address, and registration document
Manufacturer, distributor, or both; stated manufacturing scope
Responsible sales and technical contacts
RFI inbox owner, backup owner, response target, escalation path, and inquiry record
Tie the proposed solution to one exact model and one documented application.
Product family, exact model, and measurement principle
Published operating range, process limits, environmental limits, and known exclusions
Materials, process connections, output, power, communication, and enclosure
Current datasheet revision and open questions requiring engineering confirmation
Record what was received and independently checked instead of treating a marketing claim as proof.
Certificate name, number, issuer, issuer verification path, exact model or factory scope
Issue date, expiry date, calibration method, and certificate format
Serial-number traceability, incoming, in-process, and final inspection records
Sample test or factory acceptance procedure, nonconformance, and corrective-action process
Warranty terms, service route, and technical support owner
Make commercial assumptions visible before comparing quotations or approving a sample.
Sample price and quantity, MOQ, volume tiers, standard lead time, and custom lead time
Production capacity evidence when required by the project
Packaging, export documents, Incoterm, payment terms, and destination restrictions
Spare-parts, replacement, warranty, change-notification, and revision-control plan
Capture the decision trail so an approved supplier record can be revisited later.
Documents received and documents independently verified
Open technical, compliance, commercial, and delivery questions
Approved claims and claims not approved for publication
Technical reviewer, procurement reviewer, review date, and evidence owner
Final decision: approved, conditional, rejected, or more evidence required
This worksheet helps buyers compare suppliers. It does not certify a company, guarantee performance, or replace an engineering, legal, compliance, or procurement review.