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Challenge

Build an open62541 Flowmeter Calibration Drift and Rework Queue

Cross-check open62541 OPC UA volumetric flowmeter telemetry against benchmark master meter measurements. Queue drifting instruments into recalibration workflows with discrepancy reports.

EngineeringHosted by Vera
Challenge brief

What you are building

The core problem, expected build, and operating context for this challenge.

Cross-check open62541 OPC UA volumetric flowmeter telemetry against benchmark master meter measurements. Queue drifting instruments into recalibration workflows with discrepancy reports.

Calibration Technician

Extract flow rate telemetry from open62541 OPC UA client sessions and compare with reference meter logs.

Calculate percentage measurement deviation across multiple flow velocity setpoints.

Flag flowmeters showing systematic gain error or zero-point offset drift.

Generate a standardized calibration bench test ticket with recommended span adjustments.

Calibration test bench interface displaying error curves and bench work orders.

Synthesize JSON records of open62541 OPC UA flow transmitter nodes and calibration lab master meter values. Starter examples below are synthetic. They are not downloaded records.

open62541 OPC UA Utilizes open62541 OPC UA client and server information models and data types from Source 0.

pydantic-ai, matplotlib. Pydantic AI ensures type-safe validation of metrology curves and generates structured technician instructions. Local or hosted LLM to compose calibration deviation narratives and technician recommendations.

Submit runnable source, pinned dependencies, setup commands, a working interface, example outputs, and a recorded end-to-end demo. Include tests and an action log.

Identifies meter drift exceeding ±0.5% of reading.

Calculates required zero and span calibration adjustment coefficients.

Emits compliant calibration bench dispatch records.

```json [ { "input": { "meter_node": "ns=1;s=ChemicalLine.MagMeter.FlowRate", "flow_rates_lpm": [ 100, 200, 300 ], "reference_rates_lpm": [ 98.8, 197.6, 296.4 ], "max_allowed_error_pct": 0.5 }, "expected_output": { "meter_node": "ns=1;s=ChemicalLine.MagMeter.FlowRate", "observed_error_pct": 1.2, "status": "CALIBRATION_FAIL", "action": "QUEUE_FOR_BENCH_RECALIBRATION", "span_correction_factor": 0.988 } }, { "input": { "meter_node": "ns=1;s=WaterLine.VortexMeter.FlowRate", "flow_rates_lpm": [ 50, 100, 150 ], "reference_rates_lpm": [ 49.9, 99.8, 149.7 ], "max_allowed_error_pct": 0.5 }, "expected_output": { "meter_node": "ns=1;s=WaterLine.VortexMeter.FlowRate", "observed_error_pct": 0.2, "status": "CALIBRATION_PASS", "action": "RELEASE_TO_SERVICE", "span_correction_factor": 0.998 } } ] ```

Read-only calibration evaluation; calibration coefficients require physical technician verification on the test bench. Use mock external writes. Require human review before any real deployment.

Rules

Participation guide

Read-only calibration evaluation; calibration coefficients require physical technician verification on the test bench. Use mock external writes and human review.

Delivery guide

How work is evaluated

Evaluation

Identifies meter drift exceeding ±0.5% of reading. Calculates required zero and span calibration adjustment coefficients. Emits compliant calibration bench dispatch records.

Submission format

Runnable source, pinned dependencies, setup commands, working interface, example outputs, recorded demo, tests, and action logs.

Datasets

Challenge datasets

Public datasets, plus the private datasets you have access to.

Evaluation rubric

How submissions are scored

These dimensions define what the evaluator checks and which criteria separate a passable run from a strong one.

Dimensions
4 scoring checks
Binary
1 pass or fail dimensions
Ordinal
3 scaled dimensions
Dimension 1

Complete workflow

Extract flow rate telemetry from open62541 OPC UA client sessions and compare with reference meter logs. Calculate percentage measurement deviation across multiple flow velocity setpoints. Flag flowmeters showing systematic gain error or zero-point offset drift. Generate a standardized calibration bench test ticket with recommended span adjustments.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 2

Correctness and evidence

Identifies meter drift exceeding ±0.5% of reading. Calculates required zero and span calibration adjustment coefficients. Emits compliant calibration bench dispatch records.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 3

Review interface

Calibration test bench interface displaying error curves and bench work orders.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 4

Safe execution

Read-only calibration evaluation; calibration coefficients require physical technician verification on the test bench.

Binary check

This dimension contributes its full weight only when the submission satisfies the requirement. Partial credit is not awarded.

Learning goals

What you should walk away with

  • Extract flow rate telemetry from open62541 OPC UA client sessions and compare with reference meter logs.

  • Calculate percentage measurement deviation across multiple flow velocity setpoints.

  • Flag flowmeters showing systematic gain error or zero-point offset drift.

  • Generate a standardized calibration bench test ticket with recommended span adjustments.

Resources and assets

Reference links and supporting material

Dataset notes

Synthesize JSON records of open62541 OPC UA flow transmitter nodes and calibration lab master meter values. Supplied starter examples are synthetic, not source extracts.

Challenge setup

Configuration summary for this challenge.

Challenge input

Input details are not configured.

Pydantic AI

Typed Python agent framework.

Evaluated output

No output checks are configured.

Evaluation checks
  • Extract flow rate telemetry from open62541 OPC UA client sessions and compare with reference meter logs. Ca...
  • Identifies meter drift exceeding ±0.5% of reading. Calculates required zero and span calibration adjustment...
  • Calibration test bench interface displaying error curves and bench work orders.
Configured evaluation evidence
  • 2 public reference cases
Configured runtime
  • 2 configured tools

Summary shows the first task, up to three tools, and up to three evidence items. Open the technical recipe to view all configured items.

View technical recipe

Configured tools

Action Space
  • Pydantic AI · Optional
Orchestration
  • Pydantic AI · Optional

Evaluation contract

  • Complete workflow · Weight 40
  • Correctness and evidence · Weight 30
  • Review interface · Weight 20
  • Safe execution · Weight 10

Reference cases

  • 2 public reference cases

Workflow tasks

No workflow tasks are configured.

Recipe freeze marker

No recipe freeze time is recorded.

Frequently Asked Questions about Build an open62541 Flowmeter Calibration Drift and Rework Queue