What Data for This Category Looks Like
The data for this category comes from enterprise metrology management systems, external calibration institution certificates, standard instrument data, LIMS platforms, and environmental monitoring records. Daily documents include measuring tool ledgers, calibration plans, calibration certificates, interim verification records, original test records, reference material ledgers, deviation handling documents, and more. Some data comes from Yuque shared pages, Excel files and multi-dimensional documents in Feishu folders. Documents contain fixed fields such as instrument identification, calibration date, measurement results, uncertainty, traceability number, etc. Units vary with measurement parameters, such as length, mass, uncertainty units, etc. Data updates are triggered according to calibration cycles, each test, or abnormal situations, and the update rhythm is not fixed.
What Constraints Do These Characteristics Impose on the Document Parsing and Chunking Link
The document types for this category are diverse, including structured ledgers, semi-structured calibration certificates, unstructured test records, and multi-format external files. Chunking logic must be adapted to different content structures. Key information such as traceability numbers and calibration results in documents must retain contextual associations. Splitting content across key fields must be avoided, as this will damage data credibility. Document formats from external sources are inconsistent. For example, calibration certificates have header and footer information containing traceability details, so custom parsing rules are needed for extraction. Data update frequency varies with calibration cycles. The number of files parsed in a single batch is large, so parsing timeouts and file size limits must be considered.
Configuration Settings
This configuration is based on FastGPT v4.17.0, and adapts to the document characteristics of measuring instruments and laboratory management.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Adapts to the single-page content length of calibration certificates and test records, avoids splitting key traceability fields |
chunkSplitter | Split by paragraph + heading | Adapts to the hierarchical structure of structured ledgers and semi-structured certificates, retains contextual association of fields |
customPdfParse | Enabled | Most calibration certificates are standardized PDFs; enabling this allows extraction of key information such as traceability numbers from headers and footers |
PARSE_FILE_TIMEOUT_SECONDS | 300–600 seconds | Meets time consumption requirements for batch parsing of large annual calibration ledgers |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Supports importing multiple annual calibration plans and batches of calibration certificate files |
chunkSettingMode | Manual configuration | Customizes chunking rules to adapt to different types of metrological documents based on the category's unique document structure |
Three Common Mistakes
- Scenario: Importing a publicly shared Yuque link results in a parsing failure prompt returning "unsupported data source type". Cause: The Yuque link was not confirmed to be publicly accessible, and the parsing structure for Yuque web pages was not adapted.
- Scenario: When calling an HTTP tool, parameter parsing completes normally but the tool does not execute, returning an empty result. Cause: The calling permission for the corresponding tool was not configured, or the traceability number format unique to the category included in the parameters was not properly escaped.
- Scenario: After importing a Feishu multi-dimensional document, parsed result fields are empty or formatted incorrectly. Cause: The enterprise sharing permission for the Feishu document was not enabled, or the chunking configuration was not adapted to the column structure of the multi-dimensional table.
How to Verify Proper Configuration
- Upload a standard calibration certificate PDF, review the parsed chunked content, and confirm that key fields such as traceability number and calibration date are not split.
- Import a publicly shared Yuque link for a measuring instrument ledger, verify that the parsed result includes the table content and field information of the ledger.
- Upload a calibration plan Excel file under 500 MB, check whether the parsing time falls within the range configured for
PARSE_FILE_TIMEOUT_SECONDS. - After enabling custom PDF parsing rules, re-upload the calibration certificate, verify that traceability information from headers and footers is correctly extracted.
The values provided are common starting points and should be measured against the reader's own samples.