The three layers of a usable handover
| Layer | What the host team needs | What it enables |
|---|---|---|
| 1 · Identity and configuration | Manufacturer, model, revision, materials, interfaces, variants, drawing status and change-control contact. | Correctly identify what is being integrated and keep the product file consistent. |
| 2 · Engineering inputs | Power, communication, gas path, pressure, temperature, flow, installation, Ui / Ii / Pi / Ci / Li where applicable. | Check mechanical, electrical, optical and intrinsic-safety compatibility. |
| 3 · Evidence and boundaries | Test conditions, calibration traceability, drawings, reports, limitations, status of changes and certification route. | Plan association, testing, explanation and change control without treating a target as a result. |
What the module supplier cannot take over
- The host instrument’s complete enclosure, controller, display or interlock logic
- System-level EMC, performance and environmental testing
- The target jurisdiction’s final certification or approval decision
- Missing gas, pressure, installation and operating conditions
- Maintenance and calibration decisions for the complete instrument
A module document does not replace the host instrument’s system-level work. It makes that work possible to plan and review.
Ask for the handover before the prototype
Before a prototype is committed, ask for the controlled drawing, interface definition, power and intrinsic-safety inputs where applicable, test conditions, change-control status and available reports. If a field is not yet available, record it as an open project input rather than silently treating it as confirmed.
A supplier who can state the boundary clearly is more useful than a supplier who sends a longer but unqualified datasheet.
FAQ
Questions engineers ask next
Can a module certificate replace the host instrument assessment?
No. The applicable route depends on product form, host instrument, system association and jurisdiction. Confirm it with the relevant body.
What should be requested before a prototype?
Request the controlled drawing, interface definition, power and intrinsic-safety inputs where applicable, test conditions, change-control status and any available reports.
Why are conditions part of the handover?
A target or test result has meaning only with gas, pressure, temperature, flow, configuration and other conditions. Without them the host team cannot reproduce or review the claim.
Does the supplier need to provide the complete mine monitoring system?
No. The public product role is a measurement module. The host instrument and system owner remain responsible for the complete system boundary and applicable approval work.